update 1.4.7

The recent changes in 19eea3a6154e73f7fc9d62ab20480134e95be3d5 prevent it to access a global/unfiltered list of invoices across all stores. This removes the fallback to the current store, which brings the global list back at `/invoices`.

.circleci/can-build.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -e
+
+echo "Checking if it is possible to build Bitcoin only..."
+cd ../BTCPayServer.Tests
+docker-compose -f "docker-compose.yml" build

.circleci/config.yml

@@ -2,15 +2,15 @@ version: 2
 jobs:
   fast_tests:
     machine:
-        docker_layer_caching: true
+        enabled: true
     steps:
       - checkout
       - run:
           command: |
-            cd .circleci && ./run-tests.sh "Fast=Fast"
+            cd .circleci && ./run-tests.sh "Fast=Fast|ThirdParty=ThirdParty" && ./can-build.sh
   selenium_tests:
     machine:
-        docker_layer_caching: true
+        enabled: true
     steps:
       - checkout
       - run:
@@ -18,69 +18,91 @@ jobs:
             cd .circleci && ./run-tests.sh "Selenium=Selenium"
   integration_tests:
     machine:
-        docker_layer_caching: true
+        enabled: true
     steps:
       - checkout
       - run:
           command: |
             cd .circleci && ./run-tests.sh "Integration=Integration"
-  external_tests:
+  trigger_docs_build:
     machine:
-        docker_layer_caching: true
+        enabled: true
+        image: ubuntu-2004:202201-02
     steps:
-      - checkout
       - run:
           command: |
-            cd .circleci && ./run-tests.sh "ExternalIntegration=ExternalIntegration"
-
+            curl -X POST -H "Authorization: token $GH_PAT" -H "Accept: application/vnd.github.everest-preview+json" -H "Content-Type: application/json" https://api.github.com/repos/btcpayserver/btcpayserver-doc/dispatches --data '{"event_type": "build_docs"}'
 
   # publish jobs require $DOCKERHUB_REPO, $DOCKERHUB_USER, $DOCKERHUB_PASS defined
   amd64:
     machine:
-      docker_layer_caching: true
+        enabled: true
     steps:
-      - checkout  
+      - checkout
       - run:
           command: |
             LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
             #
             sudo docker build --pull -t $DOCKERHUB_REPO:$LATEST_TAG-amd64 -f amd64.Dockerfile .
+            sudo docker build --pull --build-arg CONFIGURATION_NAME=Altcoins-Release -t $DOCKERHUB_REPO:$LATEST_TAG-altcoins-amd64 -f amd64.Dockerfile .
             sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
             sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-amd64
+            sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-altcoins-amd64
 
   arm32v7:
     machine:
-      docker_layer_caching: true
+        enabled: true
     steps:
-      - checkout  
+      - checkout
       - run:
           command: |
             sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
             LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
             #
             sudo docker build --pull -t $DOCKERHUB_REPO:$LATEST_TAG-arm32v7 -f arm32v7.Dockerfile .
+            sudo docker build --pull --build-arg CONFIGURATION_NAME=Altcoins-Release -t $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm32v7 -f arm32v7.Dockerfile .
             sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
             sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-arm32v7
+            sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm32v7
+
+  arm64v8:
+    machine:
+        enabled: true
+    steps:
+      - checkout
+      - run:
+          command: |
+            sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
+            LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
+            #
+            sudo docker build --pull -t $DOCKERHUB_REPO:$LATEST_TAG-arm64v8 -f arm64v8.Dockerfile .
+            sudo docker build --build-arg CONFIGURATION_NAME=Altcoins-Release --pull -t $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm64v8 -f arm64v8.Dockerfile .
+            sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
+            sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-arm64v8
+            sudo docker push $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm64v8
 
   multiarch:
     machine:
       enabled: true
-      image: circleci/classic:201808-01
+      image: ubuntu-2004:202201-02
     steps:
       - run:
           command: |
-            # Turn on Experimental features
-            sudo mkdir $HOME/.docker
-            sudo sh -c 'echo "{ \"experimental\": \"enabled\" }" >> $HOME/.docker/config.json'
-            #
             sudo docker login --username=$DOCKERHUB_USER --password=$DOCKERHUB_PASS
             #
             LATEST_TAG=${CIRCLE_TAG:1} #trim v from tag
-            sudo docker manifest create --amend $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-amd64 $DOCKERHUB_REPO:$LATEST_TAG-arm32v7
+            sudo docker manifest create --amend $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-amd64 $DOCKERHUB_REPO:$LATEST_TAG-arm32v7 $DOCKERHUB_REPO:$LATEST_TAG-arm64v8
             sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-amd64 --os linux --arch amd64
             sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-arm32v7 --os linux --arch arm --variant v7
+            sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG $DOCKERHUB_REPO:$LATEST_TAG-arm64v8 --os linux --arch arm64 --variant v8
             sudo docker manifest push $DOCKERHUB_REPO:$LATEST_TAG -p
 
+            sudo docker manifest create --amend $DOCKERHUB_REPO:$LATEST_TAG-altcoins $DOCKERHUB_REPO:$LATEST_TAG-altcoins-amd64 $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm32v7 $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm64v8
+            sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG-altcoins $DOCKERHUB_REPO:$LATEST_TAG-altcoins-amd64 --os linux --arch amd64
+            sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG-altcoins $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm32v7 --os linux --arch arm --variant v7
+            sudo docker manifest annotate $DOCKERHUB_REPO:$LATEST_TAG-altcoins $DOCKERHUB_REPO:$LATEST_TAG-altcoins-arm64v8 --os linux --arch arm64 --variant v8
+            sudo docker manifest push $DOCKERHUB_REPO:$LATEST_TAG-altcoins -p
+
 workflows:
   version: 2
   build_and_test:
@@ -88,33 +110,44 @@ workflows:
       - fast_tests
       - selenium_tests
       - integration_tests
-      - external_tests:
-          filters:
-            branches:
-                only: master
-
   publish:
     jobs:
+      - trigger_docs_build:
+          filters:
+            branches:
+              ignore: /.*/
+            # only act on version tags
+            tags:
+              only: /(v[1-9]+(\.[0-9]+)*(-[a-z0-9-]+)?)|(v[a-z0-9-]+)/
       - amd64:
           filters:
             # ignore any commit on any branch by default
             branches:
               ignore: /.*/
-            # only act on version tags
+            # only act on version tags v1.0.0.88 or v1.0.2-1
+            # OR feature tags like vlndseedbackup
+            # OR features on specific versions like v1.0.0.88-lndseedbackup-1
             tags:
-              only: /v[1-9]+(\.[0-9]+)*/
+              only: /(v[1-9]+(\.[0-9]+)*(-[a-z0-9-]+)?)|(v[a-z0-9-]+)/
       - arm32v7:
           filters:
             branches:
               ignore: /.*/
             tags:
-              only: /v[1-9]+(\.[0-9]+)*/
-      - multiarch:
-          requires:
-            - amd64
-            - arm32v7
+              only: /(v[1-9]+(\.[0-9]+)*(-[a-z0-9-]+)?)|(v[a-z0-9-]+)/
+      - arm64v8:
           filters:
             branches:
               ignore: /.*/
             tags:
-              only: /v[1-9]+(\.[0-9]+)*/
+              only: /(v[1-9]+(\.[0-9]+)*(-[a-z0-9-]+)?)|(v[a-z0-9-]+)/
+      - multiarch:
+          requires:
+            - amd64
+            - arm32v7
+            - arm64v8
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              only: /(v[1-9]+(\.[0-9]+)*(-[a-z0-9-]+)?)|(v[a-z0-9-]+)/

.circleci/run-tests.sh

@@ -3,6 +3,7 @@ set -e
 
 cd ../BTCPayServer.Tests
 docker-compose -v
-docker-compose down --v
-docker-compose build
-docker-compose run -e "TEST_FILTERS=$1" tests
+docker-compose -f "docker-compose.altcoins.yml" down --v
+docker-compose -f "docker-compose.altcoins.yml" pull
+docker-compose -f "docker-compose.altcoins.yml" build
+docker-compose -f "docker-compose.altcoins.yml" run -e "TEST_FILTERS=$1" tests

.editorconfig

@@ -10,8 +10,9 @@ root = true
 insert_final_newline = true
 indent_style = space
 indent_size = 4
+charset = utf-8
 
-[project.json]
+[launchSettings.json]
 indent_size = 2
 
 # C# files
@@ -120,8 +121,11 @@ csharp_space_between_method_declaration_name_and_open_parenthesis = false
 csharp_space_between_method_declaration_parameter_list_parentheses = false
 csharp_space_between_parentheses = false
 csharp_space_between_square_brackets = false
+csharp_style_prefer_null_check_over_type_check = true:warning
+csharp_prefer_simple_using_statement = true:warning
 
 # C++ Files
+
 [*.{cpp,h,in}]
 curly_bracket_next_line = true
 indent_brace_style = Allman
@@ -146,4 +150,4 @@ indent_size = 2
 [*.sh]
 end_of_line = lf
 [*.{cmd, bat}]
-end_of_line = crlf
+end_of_line = crlf

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+# These are supported funding model platforms
+custom: https://foundation.btcpayserver.org

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,63 @@
+---
+name: "\U0001F41B Bug report"
+about: Report a bug or a technical issue
+
+---
+
+<!--
+Thank you for reporting a technical issue.
+
+This issue tracker is only for bug reports and problems. 
+
+For general questions please read our documentation docs.btcpayserver.org. You can ask technical questions in discussions https://github.com/btcpayserver/btcpayserver/discussions and general support on our community chat chat.btcpayserver.org
+
+Please fill in as much of the template below as you're able. 
+-->
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce the bug**
+Steps to reproduce the reported bug:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+
+<!--
+A clear and concise description of what you expected to happen.
+-->
+
+**Screenshots**
+
+
+<!--
+If applicable, add screenshots to help explain your problem.
+-->
+
+**Your BTCPay Environment (please complete the following information):**
+- BTCPay Server Version:    <!--[available in the right bottom corner of footer] -->
+- Deployment Method:        <!--[e.g. Docker, Manual, Third-Party-host]-->
+- Browser:                  <!--[e.g. Chrome, Safari]-->
+
+**Logs (if applicable)**
+
+
+<!--
+Basic logs can be found in Server Settings > Logs. 
+More logs https://docs.btcpayserver.org/Troubleshooting/#2-looking-through-the-logs
+-->
+
+**Setup Parameters**
+
+<!--
+If you're reporting a deployment issue run `. btcpay-setup.sh -i` and paste the setup parameters here with your private information removed or obscured.
+-->
+
+**Additional context**
+
+<!--
+Add any other context about the problem here.
+-->

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,34 +0,0 @@
----
-name: Report a problem
-about: File a technical problem or report a bug
----
-
-**Describe the problem/bug**
-A clear and concise description of what the bug is.
-
-**Your environment**
-* Version of BTCPay Server:
-* Deployment method: 
-* Other relevant environment details:
-
-**Logs (if applicable)**
-Basic logs can be found in Server Settings > Logs.
-
-**To Reproduce**
-Steps to reproduce the behavior:
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**Actual behavior**
-Tell us what happens instead
-
-**Screenshots/Links**
-If applicable, add screenshots or links to help explain your problem.
-
-**Additional context**
-Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+blank_issues_enabled: false
+contact_links: 
+  - name: 🚀 Discussions  
+    url: https://github.com/btcpayserver/btcpayserver/discussions
+    about: Technical discussions, questions and feature requests    
+  - name: 📝 Official Documentation
+    url: https://docs.btcpayserver.org
+    about: Check our documentation for answers to common questions 
+  - name: 💬 Community Support Chat  
+    url: https://chat.btcpayserver.org/
+    about: Ask general questions and get community support in real-time

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,20 +0,0 @@
----
-name: Feature request
-about: Ideas and feature requests
-
----
-
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
-
-**Provide examples**
-If applicable provide examples, wireframes, sketches or images to better explain your idea.
-
-**Additional context**
-Add any other context or screenshots about the feature request here.

.gitignore

@@ -292,4 +292,11 @@ __pycache__/
 BTCPayServer/wwwroot/bundles/*
 !BTCPayServer/wwwroot/bundles/.gitignore
 
-.vscode
+.vscode/*
+!.vscode/launch.json
+!.vscode/tasks.json
+!.vscode/extensions.json
+BTCPayServer/testpwd
+.DS_Store
+Packed Plugins
+Plugins/packed

.run/Pack Test Extension.run.xml

@@ -0,0 +1,21 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Pack Test Plugin" type="DotNetProject" factoryName=".NET Project" singleton="false">
+    <option name="EXE_PATH" value="$PROJECT_DIR$/BTCPayServer.PluginPacker/bin/Debug/netcoreapp3.1/BTCPayServer.PluginPacker.dll" />
+    <option name="PROGRAM_PARAMETERS" value="../../../../BTCPayServer.Plugins.Test\bin\Debug\netcoreapp3.1 BTCPayServer.Plugins.Test &quot;../../../../Packed Plugins&quot;" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/BTCPayServer.PluginPacker/bin/Debug/netcoreapp3.1" />
+    <option name="PASS_PARENT_ENVS" value="1" />
+    <option name="USE_EXTERNAL_CONSOLE" value="0" />
+    <option name="USE_MONO" value="0" />
+    <option name="RUNTIME_ARGUMENTS" value="" />
+    <option name="PROJECT_PATH" value="$PROJECT_DIR$/BTCPayServer.PluginPacker/BTCPayServer.PluginPacker.csproj" />
+    <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+    <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+    <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
+    <option name="PROJECT_KIND" value="DotNetCore" />
+    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <method v="2">
+      <option name="Build" default="false" projectName="BTCPayServer.Plugins.Test" projectPath="C:\Git\btcpayserver\BTCPayServer.Plugins.Test\BTCPayServer.Plugins.Test.csproj" />
+      <option name="Build" />
+    </method>
+  </configuration>
+</component>

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+    "recommendations": ["ms-dotnettools.csharp"]
+}

.vscode/launch.json

@@ -0,0 +1,33 @@
+{
+    // Use IntelliSense to find out which attributes exist for C# debugging
+    // Use hover for the description of the existing attributes
+    // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (web)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/BTCPayServer/bin/Debug/net6.0/BTCPayServer.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}/BTCPayServer",
+            "stopAtEntry": false,
+            // Enable launching a web browser when ASP.NET Core starts. For more information: https://aka.ms/VSCode-CS-LaunchJson-WebBrowser
+            "serverReadyAction": {
+                "action": "openExternally",
+                "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
+            },
+            "env": {
+                "ASPNETCORE_ENVIRONMENT": "Development"
+            },
+            "sourceFileMap": {
+                "/Views": "${workspaceFolder}/Views"
+            },
+            "logging": {
+                "moduleLoad": false
+            }
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,42 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/BTCPayServer/BTCPayServer.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/BTCPayServer/BTCPayServer.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "${workspaceFolder}/BTCPayServer/BTCPayServer.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

BTCPayServer.Abstractions/BTCPayServer.Abstractions.csproj

@@ -0,0 +1,42 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <Import Project="../Build/Version.csproj" Condition="Exists('../Build/Version.csproj')" />
+  <Import Project="../Build/Common.csproj" />
+
+  <PropertyGroup>
+    <Company>BTCPay Server</Company>
+    <Copyright>Copyright © BTCPay Server 2020</Copyright>
+    <Description>A library for BTCPay Server plugin development</Description>
+    <PackageIcon>icon.png</PackageIcon>
+    <PackageTags>btcpay,btcpayserver</PackageTags>
+    <PackageProjectUrl>https://github.com/btcpayserver/btcpayserver/tree/master/BTCPayServer.Abstractions</PackageProjectUrl>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <RepositoryUrl>https://github.com/btcpayserver/btcpayserver</RepositoryUrl>
+    <RepositoryType>git</RepositoryType>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
+    <DebugType>portable</DebugType>
+    <Optimize>true</Optimize>
+    <NoWarn>1591;1573;1572;1584;1570;3021</NoWarn>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+  </PropertyGroup>  
+  <ItemGroup Condition=" '$(Configuration)' == 'Release' ">
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
+  </ItemGroup>
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="icon.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="6.0.1" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.1" />
+    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="6.0.0" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\BTCPayServer.Client\BTCPayServer.Client.csproj" />
+  </ItemGroup>
+</Project>

BTCPayServer.Abstractions/Configuration/DataDirectories.cs

@@ -0,0 +1,12 @@
+namespace BTCPayServer.Configuration
+{
+    public class DataDirectories
+    {
+        public string DataDir { get; set; }
+        public string PluginDir { get; set; }
+        public string TempStorageDir { get; set; }
+        public string StorageDir { get; set; }
+    }
+
+
+}

BTCPayServer.Abstractions/Constants/AuthenticationSchemes.cs

@@ -0,0 +1,11 @@
+namespace BTCPayServer.Abstractions.Constants
+{
+    public class AuthenticationSchemes
+    {
+        public const string Cookie = "Identity.Application";
+        public const string Bitpay = "Bitpay";
+        public const string Greenfield = "Greenfield.APIKeys,Greenfield.Basic";
+        public const string GreenfieldAPIKeys = "Greenfield.APIKeys";
+        public const string GreenfieldBasic = "Greenfield.Basic";
+    }
+}

BTCPayServer.Abstractions/Constants/WellKnownTempData.cs

@@ -0,0 +1,7 @@
+namespace BTCPayServer.Abstractions.Constants;
+
+public class WellKnownTempData
+{
+    public const string SuccessMessage = nameof(SuccessMessage);
+    public const string ErrorMessage = nameof(ErrorMessage);
+}

BTCPayServer.Abstractions/Contracts/BaseDbContextFactory.cs

@@ -0,0 +1,111 @@
+using System;
+using BTCPayServer.Abstractions.Models;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.Extensions.Options;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Operations;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public abstract class BaseDbContextFactory<T> where T : DbContext
+    {
+        private readonly IOptions<DatabaseOptions> _options;
+        private readonly string _schemaPrefix;
+
+        public BaseDbContextFactory(IOptions<DatabaseOptions> options, string schemaPrefix)
+        {
+            _options = options;
+            _schemaPrefix = schemaPrefix;
+        }
+
+        public abstract T CreateContext();
+
+        class CustomNpgsqlMigrationsSqlGenerator : NpgsqlMigrationsSqlGenerator
+        {
+#pragma warning disable EF1001 // Internal EF Core API usage.
+            public CustomNpgsqlMigrationsSqlGenerator(MigrationsSqlGeneratorDependencies dependencies, Npgsql.EntityFrameworkCore.PostgreSQL.Infrastructure.Internal.INpgsqlOptions opts) : base(dependencies, opts)
+#pragma warning restore EF1001 // Internal EF Core API usage.
+            {
+            }
+
+            protected override void Generate(NpgsqlCreateDatabaseOperation operation, IModel model, MigrationCommandListBuilder builder)
+            {
+                builder
+                    .Append("CREATE DATABASE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Name));
+
+                // POSTGRES gotcha: Indexed Text column (even if PK) are not used if we are not using C locale
+                builder
+                    .Append(" TEMPLATE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("template0"));
+
+                builder
+                    .Append(" LC_CTYPE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("C"));
+
+                builder
+                    .Append(" LC_COLLATE ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("C"));
+
+                builder
+                    .Append(" ENCODING ")
+                    .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier("UTF8"));
+
+                if (operation.Tablespace != null)
+                {
+                    builder
+                        .Append(" TABLESPACE ")
+                        .Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(operation.Tablespace));
+                }
+
+                builder.AppendLine(Dependencies.SqlGenerationHelper.StatementTerminator);
+
+                EndStatement(builder, suppressTransaction: true);
+            }
+        }
+
+        public void ConfigureBuilder(DbContextOptionsBuilder builder)
+        {
+            switch (_options.Value.DatabaseType)
+            {
+                case DatabaseType.Sqlite:
+                    builder.UseSqlite(_options.Value.ConnectionString, o =>
+                    {
+                        if (!string.IsNullOrEmpty(_schemaPrefix))
+                        {
+                            o.MigrationsHistoryTable(_schemaPrefix);
+                        }
+                    });
+                    break;
+                case DatabaseType.Postgres:
+                    builder
+                        .UseNpgsql(_options.Value.ConnectionString, o =>
+                        {
+                            o.EnableRetryOnFailure(10);
+                            if (!string.IsNullOrEmpty(_schemaPrefix))
+                            {
+                                o.MigrationsHistoryTable(_schemaPrefix);
+                            }
+                        })
+                        .ReplaceService<IMigrationsSqlGenerator, CustomNpgsqlMigrationsSqlGenerator>();
+                    break;
+                case DatabaseType.MySQL:
+                    builder.UseMySql(_options.Value.ConnectionString, ServerVersion.AutoDetect(_options.Value.ConnectionString), o =>
+                    {
+                        o.EnableRetryOnFailure(10);
+
+                        if (!string.IsNullOrEmpty(_schemaPrefix))
+                        {
+                            o.MigrationsHistoryTable(_schemaPrefix);
+                        }
+                    });
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+
+    }
+}

BTCPayServer.Abstractions/Contracts/IBTCPayServerClientFactory.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+using BTCPayServer.Client;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IBTCPayServerClientFactory
+    {
+        Task<BTCPayServerClient> Create(string userId, params string[] storeIds);
+    }
+}

BTCPayServer.Abstractions/Contracts/IBTCPayServerPlugin.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Text.Json.Serialization;
+using BTCPayServer.Abstractions.Converters;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IBTCPayServerPlugin
+    {
+        public string Identifier { get; }
+        string Name { get; }
+        [JsonConverter(typeof(VersionConverter))]
+        Version Version { get; }
+        string Description { get; }
+        bool SystemPlugin { get; set; }
+        PluginDependency[] Dependencies { get; }
+        void Execute(IApplicationBuilder applicationBuilder, IServiceProvider applicationBuilderApplicationServices);
+        void Execute(IServiceCollection applicationBuilder);
+
+        public class PluginDependency
+        {
+            public string Identifier { get; set; }
+            public string Condition { get; set; }
+            public override string ToString()
+            {
+                return $"{Identifier}: {Condition}";
+            }
+        }
+    }
+
+}

BTCPayServer.Abstractions/Contracts/IFileService.cs

@@ -0,0 +1,17 @@
+#nullable enable
+using System;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+
+namespace BTCPayServer.Abstractions.Contracts;
+
+public interface IFileService
+{
+    Task<IStoredFile> AddFile(IFormFile file, string userId);
+    Task<string?> GetFileUrl(Uri baseUri, string fileId);
+
+    Task<string?> GetTemporaryFileUrl(Uri baseUri, string fileId, DateTimeOffset expiry,
+        bool isDownload);
+
+    Task RemoveFile(string fileId, string userId);
+}

BTCPayServer.Abstractions/Contracts/INotificationHandler.cs

@@ -0,0 +1,27 @@
+using System;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public abstract class BaseNotification
+    {
+        public abstract string Identifier { get; }
+        public abstract string NotificationType { get; }
+    }
+
+    public interface INotificationHandler
+    {
+        string NotificationType { get; }
+        Type NotificationBlobType { get; }
+        public (string identifier, string name)[] Meta { get; }
+        void FillViewModel(object notification, NotificationViewModel vm);
+    }
+
+    public class NotificationViewModel
+    {
+        public string Id { get; set; }
+        public DateTimeOffset Created { get; set; }
+        public string Body { get; set; }
+        public string ActionLink { get; set; }
+        public bool Seen { get; set; }
+    }
+}

BTCPayServer.Abstractions/Contracts/IPluginHookAction.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IPluginHookAction
+    {
+        public string Hook { get; }
+        Task Execute(object args);
+    }
+}

BTCPayServer.Abstractions/Contracts/IPluginHookFilter.cs

@@ -0,0 +1,11 @@
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IPluginHookFilter
+    {
+        public string Hook { get; }
+
+        Task<object> Execute(object args);
+    }
+}

BTCPayServer.Abstractions/Contracts/IPluginHookService.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IPluginHookService
+    {
+        Task ApplyAction(string hook, object args);
+        Task<object> ApplyFilter(string hook, object args);
+    }
+}

BTCPayServer.Abstractions/Contracts/ISettingsRepository.cs

@@ -0,0 +1,13 @@
+#nullable enable
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface ISettingsRepository
+    {
+        Task<T?> GetSettingAsync<T>(string? name = null) where T : class;
+        Task UpdateSetting<T>(T obj, string? name = null) where T : class;
+        Task<T> WaitSettingsChanged<T>(CancellationToken cancellationToken = default) where T : class;
+    }
+}

BTCPayServer.Abstractions/Contracts/IStartupTask.cs

@@ -0,0 +1,10 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IStartupTask
+    {
+        Task ExecuteAsync(CancellationToken cancellationToken = default);
+    }
+}

BTCPayServer.Abstractions/Contracts/IStoredFile.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace BTCPayServer.Abstractions.Contracts;
+
+public interface IStoredFile
+{
+    string Id { get; set; }
+    string FileName { get; set; }
+    string StorageFileName { get; set; }
+    DateTime Timestamp { get; set; }
+    string ApplicationUserId { get; set; }
+}

BTCPayServer.Abstractions/Contracts/ISyncSummaryProvider.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface ISyncSummaryProvider
+    {
+        bool AllAvailable();
+
+        string Partial { get; }
+        IEnumerable<ISyncStatus> GetStatuses();
+    }
+
+    public interface ISyncStatus
+    {
+        public string CryptoCode { get; set; }
+        public bool Available { get; }
+    }
+}

BTCPayServer.Abstractions/Contracts/IUIExtension.cs

@@ -0,0 +1,9 @@
+namespace BTCPayServer.Abstractions.Contracts
+{
+    public interface IUIExtension
+    {
+        string Partial { get; }
+
+        string Location { get; }
+    }
+}

BTCPayServer.Abstractions/Converters/VersionConverter.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace BTCPayServer.Abstractions.Converters
+{
+    public class VersionConverter : JsonConverter<Version>
+    {
+        public override Version Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            return Version.Parse(reader.GetString());
+        }
+
+        public override void Write(Utf8JsonWriter writer, Version value, JsonSerializerOptions options)
+        {
+            writer.WriteStringValue(value.ToString());
+        }
+    }
+}

BTCPayServer.Abstractions/Extensions/Extensions.cs

@@ -0,0 +1,20 @@
+using System.Text.Json;
+using BTCPayServer.Abstractions.Models;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+
+namespace BTCPayServer.Abstractions.Extensions
+{
+    public static class SetStatusMessageModelExtensions
+    {
+        public static void SetStatusMessageModel(this ITempDataDictionary tempData, StatusMessageModel statusMessage)
+        {
+            if (statusMessage == null)
+            {
+                tempData.Remove("StatusMessageModel");
+                return;
+            }
+
+            tempData["StatusMessageModel"] = JsonSerializer.Serialize(statusMessage, new JsonSerializerOptions());
+        }
+    }
+}

BTCPayServer.Abstractions/Extensions/GreenfieldExtensions.cs

@@ -0,0 +1,43 @@
+using System.Collections.Generic;
+using BTCPayServer.Client.Models;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+
+namespace BTCPayServer.Abstractions.Extensions;
+
+public static class GreenfieldExtensions
+{
+    public static IActionResult CreateValidationError(this ControllerBase controller, ModelStateDictionary modelState)
+    {
+        return controller.UnprocessableEntity(modelState.ToGreenfieldValidationError());
+    }
+
+    public static List<GreenfieldValidationError> ToGreenfieldValidationError(this ModelStateDictionary modelState)
+    {
+        List<GreenfieldValidationError> errors = new List<GreenfieldValidationError>();
+        foreach (var error in modelState)
+        {
+            foreach (var errorMessage in error.Value.Errors)
+            {
+                errors.Add(new GreenfieldValidationError(error.Key, errorMessage.ErrorMessage));
+            }
+        }
+
+        return errors;
+    }
+
+    public static IActionResult CreateAPIError(this ControllerBase controller, string errorCode, string errorMessage)
+    {
+        return controller.BadRequest(new GreenfieldAPIError(errorCode, errorMessage));
+    }
+        
+    public static IActionResult CreateAPIError(this ControllerBase controller, int httpCode, string errorCode, string errorMessage)
+    {
+        return controller.StatusCode(httpCode, new GreenfieldAPIError(errorCode, errorMessage));
+    }
+        
+    public static IActionResult CreateAPIPermissionError(this ControllerBase controller, string missingPermission, string message = null)
+    {
+        return controller.StatusCode(403, new GreenfieldPermissionAPIError(missingPermission, message));
+    }
+}

BTCPayServer.Abstractions/Extensions/ServiceCollectionExtensions.cs

@@ -0,0 +1,12 @@
+using BTCPayServer.Abstractions.Contracts;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace BTCPayServer.Abstractions.Extensions
+{
+    public static class ServiceCollectionExtensions
+    {
+        public static IServiceCollection AddStartupTask<T>(this IServiceCollection services)
+            where T : class, IStartupTask
+            => services.AddTransient<IStartupTask, T>();
+    }
+}

BTCPayServer.Abstractions/Extensions/ViewsRazor.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Globalization;
+using Microsoft.AspNetCore.Html;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+
+namespace BTCPayServer.Abstractions.Extensions
+{
+    public static class ViewsRazor
+    {
+        private const string ACTIVE_CATEGORY_KEY = "ActiveCategory";
+        private const string ACTIVE_PAGE_KEY = "ActivePage";
+        private const string ACTIVE_ID_KEY = "ActiveId";
+
+        public static void SetActivePage<T>(this ViewDataDictionary viewData, T activePage, string title = null, string activeId = null)
+            where T : IConvertible
+        {
+            SetActivePage(viewData, activePage.ToString(), activePage.GetType().ToString(), title, activeId);
+        }
+
+        public static void SetActivePage(this ViewDataDictionary viewData, string activePage, string category, string title = null, string activeId = null)
+        {
+            // Page Title
+            viewData["Title"] = title ?? activePage;
+            // Navigation
+            viewData[ACTIVE_PAGE_KEY] = activePage;
+            viewData[ACTIVE_ID_KEY] = activeId;
+            SetActiveCategory(viewData, category);
+        }
+
+        public static void SetActiveCategory<T>(this ViewDataDictionary viewData, T activeCategory)
+        {
+            SetActiveCategory(viewData, activeCategory.ToString());
+        }
+
+        public static void SetActiveCategory(this ViewDataDictionary viewData, string activeCategory)
+        {
+            viewData[ACTIVE_CATEGORY_KEY] = activeCategory;
+        }
+
+        public static string IsActiveCategory<T>(this ViewDataDictionary viewData, T category, object id = null)
+        {
+            return IsActiveCategory(viewData, category.ToString(), id);
+        }
+        
+        public static string IsActiveCategory(this ViewDataDictionary viewData, string category, object id = null)
+        {
+            if (!viewData.ContainsKey(ACTIVE_CATEGORY_KEY))
+            {
+                return null;
+            }
+            var activeId = viewData[ACTIVE_ID_KEY];
+            var activeCategory = viewData[ACTIVE_CATEGORY_KEY]?.ToString();
+            var categoryMatch = category.Equals(activeCategory, StringComparison.InvariantCultureIgnoreCase);
+            var idMatch = id == null || activeId == null || id.Equals(activeId);
+            return categoryMatch && idMatch ? "active" : null;
+        }
+
+        public static string IsActivePage<T>(this ViewDataDictionary viewData, T page, object id = null)
+            where T : IConvertible
+        {
+            return IsActivePage(viewData, page.ToString(), page.GetType().ToString(), id);
+        }
+        
+        public static string IsActivePage(this ViewDataDictionary viewData, string page, string category, object id = null)
+        {
+            if (!viewData.ContainsKey(ACTIVE_PAGE_KEY))
+            {
+                return null;
+            }
+            var activeId = viewData[ACTIVE_ID_KEY];
+            var activePage = viewData[ACTIVE_PAGE_KEY]?.ToString();
+            var activeCategory = viewData[ACTIVE_CATEGORY_KEY]?.ToString();
+            var categoryAndPageMatch = (category == null || activeCategory.Equals(category, StringComparison.InvariantCultureIgnoreCase)) && page.Equals(activePage, StringComparison.InvariantCultureIgnoreCase);
+            var idMatch = id == null || activeId == null || id.Equals(activeId);
+            return categoryAndPageMatch && idMatch ? "active" : null;
+        }
+
+        public static HtmlString ToBrowserDate(this DateTimeOffset date)
+        {
+            var displayDate = date.ToString("o", CultureInfo.InvariantCulture);
+            return new HtmlString($"<span class='localizeDate'>{displayDate}</span>");
+        }
+
+        public static HtmlString ToBrowserDate(this DateTime date)
+        {
+            var displayDate = date.ToString("o", CultureInfo.InvariantCulture);
+            return new HtmlString($"<span class='localizeDate'>{displayDate}</span>");
+        }
+
+        public static string ToTimeAgo(this DateTimeOffset date)
+        {
+            var diff = DateTimeOffset.UtcNow - date;
+            var formatted = diff.Seconds > 0
+                ? $"{diff.TimeString()} ago"
+                : $"in {diff.Negate().TimeString()}";
+            return formatted;
+        }
+
+        public static string TimeString(this TimeSpan timeSpan)
+        {
+            if (timeSpan.TotalMinutes < 1)
+            {
+                return $"{(int)timeSpan.TotalSeconds} second{Plural((int)timeSpan.TotalSeconds)}";
+            }
+            if (timeSpan.TotalHours < 1)
+            {
+                return $"{(int)timeSpan.TotalMinutes} minute{Plural((int)timeSpan.TotalMinutes)}";
+            }
+            if (timeSpan.Days < 1)
+            {
+                return $"{(int)timeSpan.TotalHours} hour{Plural((int)timeSpan.TotalHours)}";
+            }
+            return $"{(int)timeSpan.TotalDays} day{Plural((int)timeSpan.TotalDays)}";
+        }
+
+        private static string Plural(int totalDays)
+        {
+            return totalDays > 1 ? "s" : string.Empty;
+        }
+    }
+}

BTCPayServer.Abstractions/Models/BaseBTCPayServerPlugin.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Reflection;
+using BTCPayServer.Abstractions.Contracts;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace BTCPayServer.Abstractions.Models
+{
+    public abstract class BaseBTCPayServerPlugin : IBTCPayServerPlugin
+    {
+        public abstract string Identifier { get; }
+        public abstract string Name { get; }
+
+        public virtual Version Version
+        {
+            get
+            {
+                return Assembly.GetAssembly(GetType())?.GetName().Version ?? new Version(1, 0, 0, 0);
+            }
+        }
+
+        public abstract string Description { get; }
+        public bool SystemPlugin { get; set; }
+        public virtual IBTCPayServerPlugin.PluginDependency[] Dependencies { get; } = Array.Empty<IBTCPayServerPlugin.PluginDependency>();
+
+        public virtual void Execute(IApplicationBuilder applicationBuilder,
+            IServiceProvider applicationBuilderApplicationServices)
+        {
+        }
+
+        public virtual void Execute(IServiceCollection applicationBuilder)
+        {
+        }
+    }
+}

BTCPayServer.Abstractions/Models/DatabaseOptions.cs

@@ -0,0 +1,8 @@
+namespace BTCPayServer.Abstractions.Models
+{
+    public class DatabaseOptions
+    {
+        public DatabaseType DatabaseType { get; set; }
+        public string ConnectionString { get; set; }
+    }
+}

BTCPayServer.Abstractions/Models/DatabaseType.cs

@@ -0,0 +1,9 @@
+namespace BTCPayServer.Abstractions.Models
+{
+    public enum DatabaseType
+    {
+        Sqlite,
+        Postgres,
+        MySQL,
+    }
+}

BTCPayServer.Abstractions/Models/StatusMessageModel.cs

@@ -0,0 +1,50 @@
+using System;
+
+namespace BTCPayServer.Abstractions.Models
+{
+    public class StatusMessageModel
+    {
+        public StatusMessageModel()
+        {
+        }
+        public string Message { get; set; }
+        public string Html { get; set; }
+        public StatusSeverity Severity { get; set; }
+        public bool AllowDismiss { get; set; } = true;
+
+        public string SeverityCSS => ToString(Severity);
+
+        private void ParseNonJsonStatus(string s)
+        {
+            Message = s;
+            Severity = s.StartsWith("Error", StringComparison.InvariantCultureIgnoreCase)
+                ? StatusSeverity.Error
+                : StatusSeverity.Success;
+        }
+
+        public static string ToString(StatusSeverity severity)
+        {
+            switch (severity)
+            {
+                case StatusSeverity.Info:
+                    return "info";
+                case StatusSeverity.Error:
+                    return "danger";
+                case StatusSeverity.Success:
+                    return "success";
+                case StatusSeverity.Warning:
+                    return "warning";
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+
+        public enum StatusSeverity
+        {
+            Info,
+            Error,
+            Success,
+            Warning
+        }
+    }
+}

BTCPayServer.Abstractions/PushNuget.ps1

@@ -0,0 +1,7 @@
+rm "bin\release\" -Recurse -Force
+dotnet pack --configuration Release --include-symbols -p:SymbolPackageFormat=snupkg
+$package=(ls .\bin\Release\*.nupkg).FullName
+dotnet nuget push $package --source "https://api.nuget.org/v3/index.json"
+$ver = ((ls .\bin\release\*.nupkg)[0].Name -replace '.*(\d+\.\d+\.\d+)\.nupkg','$1')
+git tag -a "BTCPayServer.Abstractions/v$ver" -m "BTCPayServer.Abstractions/$ver"
+git push origin "BTCPayServer.Abstractions/v$ver"

BTCPayServer.Abstractions/Security/ContentSecurityPolicies.cs

@@ -1,8 +1,8 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using System.Threading.Tasks;
+using NBitcoin.Crypto;
 
 namespace BTCPayServer.Security
 {
@@ -10,6 +10,8 @@ namespace BTCPayServer.Security
     {
         public ConsentSecurityPolicy(string name, string value)
         {
+            if (value.Contains(';', StringComparison.OrdinalIgnoreCase))
+                throw new FormatException();
             _Value = value;
             _Name = name;
         }
@@ -66,11 +68,49 @@ namespace BTCPayServer.Security
         {
 
         }
-        HashSet<ConsentSecurityPolicy> _Policies = new HashSet<ConsentSecurityPolicy>();
+
+        readonly HashSet<ConsentSecurityPolicy> _Policies = new HashSet<ConsentSecurityPolicy>();
+
+        /// <summary>
+        /// Allow a specific script as event handler
+        /// </summary>
+        /// <param name="script"></param>
+        public void AllowUnsafeHashes(string script = null)
+        {
+            if (!allowUnsafeHashes)
+            {
+                Add("script-src", $"'unsafe-hashes'");
+                allowUnsafeHashes = true;
+            }
+            if (script != null)
+            {
+                var sha = GetSha256(script);
+                Add("script-src", $"'sha256-{sha}'");
+            }
+        }
+
+        bool allowUnsafeHashes = false;
+        /// <summary>
+        /// Allow the injection of script tag with the following script
+        /// </summary>
+        /// <param name="script"></param>
+        public void AllowInline(string script)
+        {
+            ArgumentNullException.ThrowIfNull(script);
+            var sha = GetSha256(script);
+            Add("script-src", $"'sha256-{sha}'");
+        }
+        static string GetSha256(string script)
+        {
+            return Convert.ToBase64String(Hashes.SHA256(Encoding.UTF8.GetBytes(script.Replace("\r\n", "\n", StringComparison.Ordinal))));
+        }
+
+        public void Add(string name, string value)
+        {
+            Add(new ConsentSecurityPolicy(name, value));
+        }
         public void Add(ConsentSecurityPolicy policy)
         {
-            if (_Policies.Any(p => p.Name == policy.Name && p.Value == policy.Name))
-                return;
             _Policies.Add(policy);
         }
 
@@ -81,40 +121,25 @@ namespace BTCPayServer.Security
         {
             StringBuilder value = new StringBuilder();
             bool firstGroup = true;
-            foreach(var group in Rules.GroupBy(r => r.Name))
+            foreach (var group in Rules.GroupBy(r => r.Name))
             {
                 if (!firstGroup)
                 {
                     value.Append(';');
                 }
-                List<string> values = new List<string>();
+                HashSet<string> values = new HashSet<string>();
+                List<string> valuesList = new List<string>();
                 values.Add(group.Key);
+                valuesList.Add(group.Key);
                 foreach (var v in group)
                 {
-                    values.Add(v.Value);
+                    if (values.Add(v.Value))
+                        valuesList.Add(v.Value);
                 }
-                foreach(var i in authorized)
-                {
-                    values.Add(i);
-                }
-                value.Append(String.Join(" ", values.OfType<object>().ToArray()));
+                value.Append(String.Join(" ", valuesList.OfType<object>().ToArray()));
                 firstGroup = false;
             }
             return value.ToString();
         }
-
-        internal void Clear()
-        {
-            authorized.Clear();
-            _Policies.Clear();
-        }
-
-        HashSet<string> authorized = new HashSet<string>();
-        internal void AddAllAuthorized(string v)
-        {
-            authorized.Add(v);
-        }
-
-        public IEnumerable<string> Authorized => authorized;
     }
 }

BTCPayServer.Abstractions/Services/PluginAction.cs

@@ -0,0 +1,16 @@
+using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Contracts;
+
+namespace BTCPayServer.Abstractions.Services
+{
+    public abstract class PluginAction<T> : IPluginHookAction
+    {
+        public abstract string Hook { get; }
+        public Task Execute(object args)
+        {
+            return Execute(args is T args1 ? args1 : default);
+        }
+
+        public abstract Task Execute(T arg);
+    }
+}

BTCPayServer.Abstractions/Services/PluginHookFilter.cs

@@ -0,0 +1,17 @@
+using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Contracts;
+
+namespace BTCPayServer.Abstractions.Services
+{
+    public abstract class PluginHookFilter<T> : IPluginHookFilter
+    {
+        public abstract string Hook { get; }
+
+        public Task<object> Execute(object args)
+        {
+            return Execute(args is T args1 ? args1 : default).ContinueWith(task => task.Result as object);
+        }
+
+        public abstract Task<T> Execute(T arg);
+    }
+}

BTCPayServer.Abstractions/Services/UIExtension.cs

@@ -0,0 +1,16 @@
+using BTCPayServer.Abstractions.Contracts;
+
+namespace BTCPayServer.Abstractions.Services
+{
+    public class UIExtension : IUIExtension
+    {
+        public UIExtension(string partial, string location)
+        {
+            Partial = partial;
+            Location = location;
+        }
+
+        public string Partial { get; }
+        public string Location { get; }
+    }
+}

BTCPayServer.Client/BTCPayServer.Client.csproj

@@ -0,0 +1,38 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netstandard2.1</TargetFramework>
+        <LangVersion>10.0</LangVersion>
+        <Company>BTCPay Server</Company>
+        <Copyright>Copyright © BTCPay Server 2020</Copyright>
+        <Description>A client library for BTCPay Server Greenfield API</Description>
+        <PackageIcon>icon.png</PackageIcon>
+        <PackageTags>btcpay,btcpayserver</PackageTags>
+        <PackageProjectUrl>https://github.com/btcpayserver/btcpayserver/tree/master/BTCPayServer.Client</PackageProjectUrl>
+        <PackageLicenseExpression>MIT</PackageLicenseExpression>
+        <RepositoryUrl>https://github.com/btcpayserver/btcpayserver</RepositoryUrl>
+        <RepositoryType>git</RepositoryType>
+    </PropertyGroup>
+  <PropertyGroup>
+    <Version Condition=" '$(Version)' == '' ">1.6.0</Version>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
+    <DebugType>portable</DebugType>
+    <Optimize>true</Optimize>
+    <NoWarn>1591;1573;1572;1584;1570;3021</NoWarn>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(Configuration)' == 'Release' ">
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
+  </ItemGroup>
+    <ItemGroup>
+      <PackageReference Include="NBitcoin" Version="7.0.1" />
+      <PackageReference Include="BTCPayServer.Lightning.Common" Version="1.3.1" />
+      <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+    </ItemGroup>
+  <ItemGroup>
+    <None Include="icon.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
+</Project>

BTCPayServer.Client/BTCPayServerClient.APIKeys.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<ApiKeyData> GetCurrentAPIKeyInfo(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/api-keys/current"), token);
+            return await HandleResponse<ApiKeyData>(response);
+        }
+
+        public virtual async Task<ApiKeyData> CreateAPIKey(CreateApiKeyRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/api-keys", bodyPayload: request, method: HttpMethod.Post), token);
+            return await HandleResponse<ApiKeyData>(response);
+        }
+
+        public virtual async Task RevokeCurrentAPIKeyInfo(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/api-keys/current", null, HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task RevokeAPIKey(string apikey, CancellationToken token = default)
+        {
+            if (apikey == null)
+                throw new ArgumentNullException(nameof(apikey));
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/api-keys/{apikey}", null, HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Authorization.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+
+        public static Uri GenerateAuthorizeUri(Uri btcpayHost, string[] permissions, bool strict = true,
+            bool selectiveStores = false, (string ApplicationIdentifier, Uri Redirect) applicationDetails = default)
+        {
+            var result = new UriBuilder(btcpayHost);
+            result.Path = "api-keys/authorize";
+
+            AppendPayloadToQuery(result,
+                new Dictionary<string, object>()
+                {
+                    {"strict", strict}, {"selectiveStores", selectiveStores}, {"permissions", permissions}
+                });
+
+            if (applicationDetails.Redirect != null)
+            {
+                AppendPayloadToQuery(result, new KeyValuePair<string, object>("redirect", applicationDetails.Redirect));
+                if (!string.IsNullOrEmpty(applicationDetails.ApplicationIdentifier))
+                {
+                    AppendPayloadToQuery(result, new KeyValuePair<string, object>("applicationIdentifier", applicationDetails.ApplicationIdentifier));
+                }
+            }
+
+            return result.Uri;
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Health.cs

@@ -0,0 +1,15 @@
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<ApiHealthData> GetHealth(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/health"), token);
+            return await HandleResponse<ApiHealthData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Invoices.cs

@@ -0,0 +1,132 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+using NBitcoin;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<InvoiceData>> GetInvoices(string storeId, string[] orderId = null,
+            InvoiceStatus[] status = null,
+            DateTimeOffset? startDate = null,
+            DateTimeOffset? endDate = null,
+            string textSearch = null,
+            bool includeArchived = false,
+            int? skip = null,
+            int? take = null,
+            CancellationToken token = default)
+        {
+            Dictionary<string, object> queryPayload = new Dictionary<string, object>();
+            queryPayload.Add(nameof(includeArchived), includeArchived);
+
+            if (startDate is DateTimeOffset s)
+                queryPayload.Add(nameof(startDate), Utils.DateTimeToUnixTime(s));
+
+            if (endDate is DateTimeOffset e)
+                queryPayload.Add(nameof(endDate), Utils.DateTimeToUnixTime(e));
+
+            if (orderId != null)
+                queryPayload.Add(nameof(orderId), orderId);
+            if (textSearch != null)
+                queryPayload.Add(nameof(textSearch), textSearch);
+            if (status != null)
+                queryPayload.Add(nameof(status), status.Select(s => s.ToString().ToLower()).ToArray());
+
+            if (skip != null)
+            {
+                queryPayload.Add(nameof(skip), skip);
+            }
+
+            if (take != null)
+            {
+                queryPayload.Add(nameof(take), take);
+            }
+
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/invoices",
+                        queryPayload), token);
+            return await HandleResponse<IEnumerable<InvoiceData>>(response);
+        }
+
+        public virtual async Task<InvoiceData> GetInvoice(string storeId, string invoiceId,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}"), token);
+            return await HandleResponse<InvoiceData>(response);
+        }
+        public virtual async Task<InvoicePaymentMethodDataModel[]> GetInvoicePaymentMethods(string storeId, string invoiceId,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}/payment-methods"), token);
+            return await HandleResponse<InvoicePaymentMethodDataModel[]>(response);
+        }
+
+        public virtual async Task ArchiveInvoice(string storeId, string invoiceId,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}",
+                    method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<InvoiceData> CreateInvoice(string storeId,
+            CreateInvoiceRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<InvoiceData>(response);
+        }
+
+        public virtual async Task<InvoiceData> UpdateInvoice(string storeId, string invoiceId,
+            UpdateInvoiceRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}", bodyPayload: request,
+                    method: HttpMethod.Put), token);
+            return await HandleResponse<InvoiceData>(response);
+        }
+
+        public virtual async Task<InvoiceData> MarkInvoiceStatus(string storeId, string invoiceId,
+            MarkInvoiceStatusRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            if (request.Status != InvoiceStatus.Settled && request.Status != InvoiceStatus.Invalid)
+                throw new ArgumentOutOfRangeException(nameof(request.Status), "Status can only be Invalid or Complete");
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}/status", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<InvoiceData>(response);
+        }
+
+        public virtual async Task<InvoiceData> UnarchiveInvoice(string storeId, string invoiceId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}/unarchive",
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<InvoiceData>(response);
+        }
+
+        public virtual async Task ActivateInvoicePaymentMethod(string storeId, string invoiceId, string paymentMethod, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/invoices/{invoiceId}/payment-methods/{paymentMethod}/activate",
+                    method: HttpMethod.Post), token);
+            await HandleResponse(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.LNURLPayPaymentMethods.cs

@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<LNURLPayPaymentMethodData>>
+            GetStoreLNURLPayPaymentMethods(string storeId, bool? enabled = null,
+                CancellationToken token = default)
+        {
+            var query = new Dictionary<string, object>();
+            if (enabled != null)
+            {
+                query.Add(nameof(enabled), enabled);
+            }
+
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LNURLPay",
+                        query), token);
+            return await HandleResponse<IEnumerable<LNURLPayPaymentMethodData>>(response);
+        }
+
+        public virtual async Task<LNURLPayPaymentMethodData> GetStoreLNURLPayPaymentMethod(
+            string storeId,
+            string cryptoCode, CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LNURLPay/{cryptoCode}"), token);
+            return await HandleResponse<LNURLPayPaymentMethodData>(response);
+        }
+
+        public virtual async Task RemoveStoreLNURLPayPaymentMethod(string storeId,
+            string cryptoCode, CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LNURLPay/{cryptoCode}",
+                        method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<LNURLPayPaymentMethodData> UpdateStoreLNURLPayPaymentMethod(
+            string storeId,
+            string cryptoCode, LNURLPayPaymentMethodData paymentMethod,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LNURLPay/{cryptoCode}",
+                    bodyPayload: paymentMethod, method: HttpMethod.Put), token);
+            return await HandleResponse<LNURLPayPaymentMethodData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Lightning.Internal.cs

@@ -0,0 +1,90 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<LightningNodeInformationData> GetLightningNodeInfo(string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/info",
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<LightningNodeInformationData>(response);
+        }
+
+        public virtual async Task ConnectToLightningNode(string cryptoCode, ConnectToNodeRequest request,
+            CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/connect", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<IEnumerable<LightningChannelData>> GetLightningNodeChannels(string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/channels",
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<IEnumerable<LightningChannelData>>(response);
+        }
+
+        public virtual async Task OpenLightningChannel(string cryptoCode, OpenLightningChannelRequest request,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/channels", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<string> GetLightningDepositAddress(string cryptoCode, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/address", method: HttpMethod.Post), token);
+            return await HandleResponse<string>(response);
+        }
+
+        public virtual async Task<LightningPaymentData> PayLightningInvoice(string cryptoCode, PayLightningInvoiceRequest request,
+            CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/invoices/pay", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<LightningPaymentData>(response);
+        }
+
+        public virtual async Task<LightningInvoiceData> GetLightningInvoice(string cryptoCode,
+            string invoiceId, CancellationToken token = default)
+        {
+            if (invoiceId == null)
+                throw new ArgumentNullException(nameof(invoiceId));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/invoices/{invoiceId}",
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<LightningInvoiceData>(response);
+        }
+
+        public virtual async Task<LightningInvoiceData> CreateLightningInvoice(string cryptoCode, CreateLightningInvoiceRequest request,
+            CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/server/lightning/{cryptoCode}/invoices", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<LightningInvoiceData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Lightning.Store.cs

@@ -0,0 +1,92 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<LightningNodeInformationData> GetLightningNodeInfo(string storeId, string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/info",
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<LightningNodeInformationData>(response);
+        }
+
+        public virtual async Task ConnectToLightningNode(string storeId, string cryptoCode, ConnectToNodeRequest request,
+            CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/connect", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<IEnumerable<LightningChannelData>> GetLightningNodeChannels(string storeId, string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/channels",
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<IEnumerable<LightningChannelData>>(response);
+        }
+
+        public virtual async Task OpenLightningChannel(string storeId, string cryptoCode, OpenLightningChannelRequest request,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/channels", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<string> GetLightningDepositAddress(string storeId, string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/address", method: HttpMethod.Post),
+                token);
+            return await HandleResponse<string>(response);
+        }
+
+        public virtual async Task PayLightningInvoice(string storeId, string cryptoCode, PayLightningInvoiceRequest request,
+            CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/invoices/pay", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<LightningInvoiceData> GetLightningInvoice(string storeId, string cryptoCode,
+            string invoiceId, CancellationToken token = default)
+        {
+            if (invoiceId == null)
+                throw new ArgumentNullException(nameof(invoiceId));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/invoices/{invoiceId}",
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<LightningInvoiceData>(response);
+        }
+
+        public virtual async Task<LightningInvoiceData> CreateLightningInvoice(string storeId, string cryptoCode,
+            CreateLightningInvoiceRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/lightning/{cryptoCode}/invoices", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<LightningInvoiceData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.LightningNetworkPaymentMethods.cs

@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<LightningNetworkPaymentMethodData>>
+            GetStoreLightningNetworkPaymentMethods(string storeId, bool? enabled = null,
+                CancellationToken token = default)
+        {
+            var query = new Dictionary<string, object>();
+            if (enabled != null)
+            {
+                query.Add(nameof(enabled), enabled);
+            }
+
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LightningNetwork",
+                        query), token);
+            return await HandleResponse<IEnumerable<LightningNetworkPaymentMethodData>>(response);
+        }
+
+        public virtual async Task<LightningNetworkPaymentMethodData> GetStoreLightningNetworkPaymentMethod(
+            string storeId,
+            string cryptoCode, CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LightningNetwork/{cryptoCode}"), token);
+            return await HandleResponse<LightningNetworkPaymentMethodData>(response);
+        }
+
+        public virtual async Task RemoveStoreLightningNetworkPaymentMethod(string storeId,
+            string cryptoCode, CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LightningNetwork/{cryptoCode}",
+                        method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<LightningNetworkPaymentMethodData> UpdateStoreLightningNetworkPaymentMethod(
+            string storeId,
+            string cryptoCode, UpdateLightningNetworkPaymentMethodRequest paymentMethod,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/LightningNetwork/{cryptoCode}",
+                    bodyPayload: paymentMethod, method: HttpMethod.Put), token);
+            return await HandleResponse<LightningNetworkPaymentMethodData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Misc.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<PermissionMetadata[]> GetPermissionMetadata(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("misc/permissions"), token);
+            return await HandleResponse<PermissionMetadata[]>(response);
+        }
+        public virtual async Task<Language[]> GetAvailableLanguages(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("misc/lang"), token);
+            return await HandleResponse<Language[]>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Notifications.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<NotificationData>> GetNotifications(bool? seen = null, int? skip = null,
+            int? take = null, CancellationToken token = default)
+        {
+            Dictionary<string, object> queryPayload = new Dictionary<string, object>();
+
+            if (seen != null)
+                queryPayload.Add(nameof(seen), seen);
+            if (skip != null)
+                queryPayload.Add(nameof(skip), skip);
+            if (take != null)
+                queryPayload.Add(nameof(take), take);
+
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/users/me/notifications",
+                    queryPayload), token);
+
+            return await HandleResponse<IEnumerable<NotificationData>>(response);
+        }
+
+        public virtual async Task<NotificationData> GetNotification(string notificationId,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/users/me/notifications/{notificationId}"), token);
+            return await HandleResponse<NotificationData>(response);
+        }
+
+        public virtual async Task<NotificationData> UpdateNotification(string notificationId, bool? seen,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/users/me/notifications/{notificationId}",
+                    method: HttpMethod.Put, bodyPayload: new UpdateNotification() { Seen = seen }), token);
+            return await HandleResponse<NotificationData>(response);
+        }
+
+        public virtual async Task RemoveNotification(string notificationId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/users/me/notifications/{notificationId}",
+                    method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.OnChainPaymentMethods.cs

@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<OnChainPaymentMethodData>> GetStoreOnChainPaymentMethods(string storeId,
+            bool? enabled = null,
+            CancellationToken token = default)
+        {
+            var query = new Dictionary<string, object>();
+            if (enabled != null)
+            {
+                query.Add(nameof(enabled), enabled);
+            }
+
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain",
+                        query), token);
+            return await HandleResponse<IEnumerable<OnChainPaymentMethodData>>(response);
+        }
+
+        public virtual async Task<OnChainPaymentMethodData> GetStoreOnChainPaymentMethod(string storeId,
+            string cryptoCode, CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}"), token);
+            return await HandleResponse<OnChainPaymentMethodData>(response);
+        }
+
+        public virtual async Task RemoveStoreOnChainPaymentMethod(string storeId,
+            string cryptoCode, CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}",
+                        method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<OnChainPaymentMethodData> UpdateStoreOnChainPaymentMethod(string storeId,
+            string cryptoCode, UpdateOnChainPaymentMethodRequest paymentMethod,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}",
+                    bodyPayload: paymentMethod, method: HttpMethod.Put), token);
+            return await HandleResponse<OnChainPaymentMethodData>(response);
+        }
+
+        public virtual async Task<OnChainPaymentMethodPreviewResultData>
+            PreviewProposedStoreOnChainPaymentMethodAddresses(
+                string storeId, string cryptoCode, UpdateOnChainPaymentMethodRequest paymentMethod, int offset = 0,
+                int amount = 10,
+                CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/preview",
+                    bodyPayload: paymentMethod,
+                    queryPayload: new Dictionary<string, object>() { { "offset", offset }, { "amount", amount } },
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<OnChainPaymentMethodPreviewResultData>(response);
+        }
+
+        public virtual async Task<OnChainPaymentMethodPreviewResultData> PreviewStoreOnChainPaymentMethodAddresses(
+            string storeId, string cryptoCode, int offset = 0, int amount = 10,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/preview",
+                    queryPayload: new Dictionary<string, object>() { { "offset", offset }, { "amount", amount } },
+                    method: HttpMethod.Get), token);
+            return await HandleResponse<OnChainPaymentMethodPreviewResultData>(response);
+        }
+
+        public virtual async Task<OnChainPaymentMethodDataWithSensitiveData> GenerateOnChainWallet(string storeId,
+            string cryptoCode, GenerateOnChainWalletRequest request,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/generate",
+                    bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<OnChainPaymentMethodDataWithSensitiveData>(response);
+        }
+
+    }
+}

BTCPayServer.Client/BTCPayServerClient.OnChainWallet.cs

@@ -0,0 +1,122 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+using NBitcoin;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<OnChainWalletOverviewData> ShowOnChainWalletOverview(string storeId, string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet"), token);
+            return await HandleResponse<OnChainWalletOverviewData>(response);
+        }
+        public virtual async Task<OnChainWalletFeeRateData> GetOnChainFeeRate(string storeId, string cryptoCode, int? blockTarget = null,
+            CancellationToken token = default)
+        {
+            Dictionary<string, object> queryParams = new Dictionary<string, object>();
+            if (blockTarget != null)
+            {
+                queryParams.Add("blockTarget", blockTarget);
+            }
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/feeRate", queryParams), token);
+            return await HandleResponse<OnChainWalletFeeRateData>(response);
+        }
+
+        public virtual async Task<OnChainWalletAddressData> GetOnChainWalletReceiveAddress(string storeId, string cryptoCode, bool forceGenerate = false,
+            CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/address", new Dictionary<string, object>()
+                    {
+                        {"forceGenerate", forceGenerate}
+                    }), token);
+            return await HandleResponse<OnChainWalletAddressData>(response);
+        }
+
+        public virtual async Task UnReserveOnChainWalletReceiveAddress(string storeId, string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/address", method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<IEnumerable<OnChainWalletTransactionData>> ShowOnChainWalletTransactions(
+            string storeId, string cryptoCode, TransactionStatus[] statusFilter = null,
+            CancellationToken token = default)
+        {
+            var query = new Dictionary<string, object>();
+            if (statusFilter?.Any() is true)
+            {
+                query.Add(nameof(statusFilter), statusFilter);
+            }
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/transactions", query), token);
+            return await HandleResponse<IEnumerable<OnChainWalletTransactionData>>(response);
+        }
+
+        public virtual async Task<OnChainWalletTransactionData> GetOnChainWalletTransaction(
+            string storeId, string cryptoCode, string transactionId,
+            CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/transactions/{transactionId}"), token);
+            return await HandleResponse<OnChainWalletTransactionData>(response);
+        }
+
+        public virtual async Task<IEnumerable<OnChainWalletUTXOData>> GetOnChainWalletUTXOs(string storeId,
+            string cryptoCode,
+            CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/utxos"), token);
+            return await HandleResponse<IEnumerable<OnChainWalletUTXOData>>(response);
+        }
+
+        public virtual async Task<OnChainWalletTransactionData> CreateOnChainTransaction(string storeId,
+            string cryptoCode, CreateOnChainTransactionRequest request,
+            CancellationToken token = default)
+        {
+            if (!request.ProceedWithBroadcast)
+            {
+                throw new ArgumentOutOfRangeException(nameof(request.ProceedWithBroadcast),
+                    "Please use CreateOnChainTransactionButDoNotBroadcast when wanting to only create the transaction");
+            }
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/transactions", null, request, HttpMethod.Post), token);
+            return await HandleResponse<OnChainWalletTransactionData>(response);
+        }
+
+        public virtual async Task<Transaction> CreateOnChainTransactionButDoNotBroadcast(string storeId,
+            string cryptoCode, CreateOnChainTransactionRequest request, Network network,
+            CancellationToken token = default)
+        {
+            if (request.ProceedWithBroadcast)
+            {
+                throw new ArgumentOutOfRangeException(nameof(request.ProceedWithBroadcast),
+                    "Please use CreateOnChainTransaction when wanting to also broadcast the transaction");
+            }
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods/Onchain/{cryptoCode}/wallet/transactions", null, request, HttpMethod.Post), token);
+            return Transaction.Parse(await HandleResponse<string>(response), network);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.PaymentRequests.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<PaymentRequestData>> GetPaymentRequests(string storeId,
+            bool includeArchived = false,
+            CancellationToken token = default)
+        {
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-requests",
+                        new Dictionary<string, object>() { { nameof(includeArchived), includeArchived } }), token);
+            return await HandleResponse<IEnumerable<PaymentRequestData>>(response);
+        }
+
+        public virtual async Task<PaymentRequestData> GetPaymentRequest(string storeId, string paymentRequestId,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-requests/{paymentRequestId}"), token);
+            return await HandleResponse<PaymentRequestData>(response);
+        }
+
+        public virtual async Task ArchivePaymentRequest(string storeId, string paymentRequestId,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-requests/{paymentRequestId}",
+                    method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<PaymentRequestData> CreatePaymentRequest(string storeId,
+            CreatePaymentRequestRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-requests", bodyPayload: request,
+                    method: HttpMethod.Post), token);
+            return await HandleResponse<PaymentRequestData>(response);
+        }
+
+        public virtual async Task<PaymentRequestData> UpdatePaymentRequest(string storeId, string paymentRequestId,
+            UpdatePaymentRequestRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/payment-requests/{paymentRequestId}", bodyPayload: request,
+                    method: HttpMethod.Put), token);
+            return await HandleResponse<PaymentRequestData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.PullPayments.cs

@@ -0,0 +1,71 @@
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Web;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<PullPaymentData> CreatePullPayment(string storeId, CreatePullPaymentRequest request, CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{HttpUtility.UrlEncode(storeId)}/pull-payments", bodyPayload: request, method: HttpMethod.Post), cancellationToken);
+            return await HandleResponse<PullPaymentData>(response);
+        }
+        public virtual async Task<PullPaymentData> GetPullPayment(string pullPaymentId, CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/pull-payments/{HttpUtility.UrlEncode(pullPaymentId)}", method: HttpMethod.Get), cancellationToken);
+            return await HandleResponse<PullPaymentData>(response);
+        }
+
+        public virtual async Task<PullPaymentData[]> GetPullPayments(string storeId, bool includeArchived = false, CancellationToken cancellationToken = default)
+        {
+            Dictionary<string, object> query = new Dictionary<string, object>();
+            query.Add("includeArchived", includeArchived);
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{HttpUtility.UrlEncode(storeId)}/pull-payments", queryPayload: query, method: HttpMethod.Get), cancellationToken);
+            return await HandleResponse<PullPaymentData[]>(response);
+        }
+
+        public virtual async Task ArchivePullPayment(string storeId, string pullPaymentId, CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{HttpUtility.UrlEncode(storeId)}/pull-payments/{HttpUtility.UrlEncode(pullPaymentId)}", method: HttpMethod.Delete), cancellationToken);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<PayoutData[]> GetPayouts(string pullPaymentId, bool includeCancelled = false, CancellationToken cancellationToken = default)
+        {
+            Dictionary<string, object> query = new Dictionary<string, object>();
+            query.Add("includeCancelled", includeCancelled);
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/pull-payments/{HttpUtility.UrlEncode(pullPaymentId)}/payouts", queryPayload: query, method: HttpMethod.Get), cancellationToken);
+            return await HandleResponse<PayoutData[]>(response);
+        }
+        public virtual async Task<PayoutData> CreatePayout(string pullPaymentId, CreatePayoutRequest payoutRequest, CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/pull-payments/{HttpUtility.UrlEncode(pullPaymentId)}/payouts", bodyPayload: payoutRequest, method: HttpMethod.Post), cancellationToken);
+            return await HandleResponse<PayoutData>(response);
+        }
+
+        public virtual async Task CancelPayout(string storeId, string payoutId, CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{HttpUtility.UrlEncode(storeId)}/payouts/{HttpUtility.UrlEncode(payoutId)}", method: HttpMethod.Delete), cancellationToken);
+            await HandleResponse(response);
+        }
+        public virtual async Task<PayoutData> ApprovePayout(string storeId, string payoutId, ApprovePayoutRequest request, CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{HttpUtility.UrlEncode(storeId)}/payouts/{HttpUtility.UrlEncode(payoutId)}", bodyPayload: request, method: HttpMethod.Post), cancellationToken);
+            return await HandleResponse<PayoutData>(response);
+        }
+
+        public async Task MarkPayoutPaid(string storeId, string payoutId,
+            CancellationToken cancellationToken = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest(
+                    $"api/v1/stores/{HttpUtility.UrlEncode(storeId)}/payouts/{HttpUtility.UrlEncode(payoutId)}/mark-paid",
+                    method: HttpMethod.Post), cancellationToken);
+            await HandleResponse(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.ServerInfo.cs

@@ -0,0 +1,15 @@
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<ServerInfoData> GetServerInfo(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/server/info"), token);
+            return await HandleResponse<ServerInfoData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.StorePaymentMethods.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<Dictionary<string, GenericPaymentMethodData>> GetStorePaymentMethods(string storeId,
+            bool? enabled = null,
+            CancellationToken token = default)
+        {
+            var query = new Dictionary<string, object>();
+            if (enabled != null)
+            {
+                query.Add(nameof(enabled), enabled);
+            }
+
+            var response =
+                await _httpClient.SendAsync(
+                    CreateHttpRequest($"api/v1/stores/{storeId}/payment-methods",
+                        query), token);
+            return await HandleResponse<Dictionary<string, GenericPaymentMethodData>>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.StoreUsers.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<StoreUserData>> GetStoreUsers(string storeId,
+            CancellationToken token = default)
+        {
+            using var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/users"), token);
+            return await HandleResponse<IEnumerable<StoreUserData>>(response);
+        }
+
+        public virtual async Task RemoveStoreUser(string storeId, string userId, CancellationToken token = default)
+        {
+            using var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/users/{userId}", method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<StoreData> AddStoreUser(string storeId, StoreUserData request,
+            CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            using var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}/users", bodyPayload: request, method: HttpMethod.Post),
+                token);
+            return await HandleResponse<StoreData>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Stores.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<IEnumerable<StoreData>> GetStores(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/stores"), token);
+            return await HandleResponse<IEnumerable<StoreData>>(response);
+        }
+
+        public virtual async Task<StoreData> GetStore(string storeId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}"), token);
+            return await HandleResponse<StoreData>(response);
+        }
+
+        public virtual async Task RemoveStore(string storeId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(
+                CreateHttpRequest($"api/v1/stores/{storeId}", method: HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<StoreData> CreateStore(CreateStoreRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/stores", bodyPayload: request, method: HttpMethod.Post), token);
+            return await HandleResponse<StoreData>(response);
+        }
+
+        public virtual async Task<StoreData> UpdateStore(string storeId, UpdateStoreRequest request, CancellationToken token = default)
+        {
+            if (request == null)
+                throw new ArgumentNullException(nameof(request));
+            if (storeId == null)
+                throw new ArgumentNullException(nameof(storeId));
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}", bodyPayload: request, method: HttpMethod.Put), token);
+            return await HandleResponse<StoreData>(response);
+        }
+
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Users.cs

@@ -0,0 +1,47 @@
+#nullable enable
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<ApplicationUserData> GetCurrentUser(CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/users/me"), token);
+            return await HandleResponse<ApplicationUserData>(response);
+        }
+
+        public virtual async Task<ApplicationUserData> CreateUser(CreateApplicationUserRequest request,
+            CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest("api/v1/users", null, request, HttpMethod.Post), token);
+            return await HandleResponse<ApplicationUserData>(response);
+        }
+
+        public virtual async Task DeleteUser(string userId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/users/{userId}", null, HttpMethod.Delete), token);
+            await HandleResponse(response);
+        }
+
+        public virtual async Task<ApplicationUserData> GetUserByIdOrEmail(string idOrEmail, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/users/{idOrEmail}", null, HttpMethod.Get), token);
+            return await HandleResponse<ApplicationUserData>(response);
+        }
+
+        public virtual async Task<ApplicationUserData[]> GetUsers( CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/users/", null, HttpMethod.Get), token);
+            return await HandleResponse<ApplicationUserData[]>(response);
+        }
+
+        public virtual async Task DeleteCurrentUser(CancellationToken token = default)
+        {
+            await DeleteUser("me", token);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.Webhooks.cs

@@ -0,0 +1,63 @@
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        public virtual async Task<StoreWebhookData> CreateWebhook(string storeId, Client.Models.CreateStoreWebhookRequest create, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks", bodyPayload: create, method: HttpMethod.Post), token);
+            return await HandleResponse<StoreWebhookData>(response);
+        }
+        public virtual async Task<StoreWebhookData> GetWebhook(string storeId, string webhookId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}"), token);
+            if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
+                return null;
+            return await HandleResponse<StoreWebhookData>(response);
+        }
+        public virtual async Task<StoreWebhookData> UpdateWebhook(string storeId, string webhookId, Models.UpdateStoreWebhookRequest update, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}", bodyPayload: update, method: HttpMethod.Put), token);
+            return await HandleResponse<StoreWebhookData>(response);
+        }
+        public virtual async Task<bool> DeleteWebhook(string storeId, string webhookId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}", method: HttpMethod.Delete), token);
+            return response.IsSuccessStatusCode;
+        }
+        public virtual async Task<StoreWebhookData[]> GetWebhooks(string storeId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks"), token);
+            return await HandleResponse<StoreWebhookData[]>(response);
+        }
+        public virtual async Task<WebhookDeliveryData[]> GetWebhookDeliveries(string storeId, string webhookId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}/deliveries"), token);
+            return await HandleResponse<WebhookDeliveryData[]>(response);
+        }
+        public virtual async Task<WebhookDeliveryData> GetWebhookDelivery(string storeId, string webhookId, string deliveryId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}/deliveries/{deliveryId}"), token);
+            if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
+                return null;
+            return await HandleResponse<WebhookDeliveryData>(response);
+        }
+        public virtual async Task<string> RedeliverWebhook(string storeId, string webhookId, string deliveryId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}/deliveries/{deliveryId}/redeliver", null, HttpMethod.Post), token);
+            return await HandleResponse<string>(response);
+        }
+
+        public virtual async Task<WebhookEvent> GetWebhookDeliveryRequest(string storeId, string webhookId, string deliveryId, CancellationToken token = default)
+        {
+            var response = await _httpClient.SendAsync(CreateHttpRequest($"api/v1/stores/{storeId}/webhooks/{webhookId}/deliveries/{deliveryId}/request"), token);
+            if (response.StatusCode == System.Net.HttpStatusCode.NotFound)
+                return null;
+            return await HandleResponse<WebhookEvent>(response);
+        }
+    }
+}

BTCPayServer.Client/BTCPayServerClient.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client
+{
+    public partial class BTCPayServerClient
+    {
+        private readonly string _apiKey;
+        private readonly Uri _btcpayHost;
+        private readonly string _username;
+        private readonly string _password;
+        private readonly HttpClient _httpClient;
+        public Uri Host => _btcpayHost;
+
+        public string APIKey => _apiKey;
+
+        public BTCPayServerClient(Uri btcpayHost, HttpClient httpClient = null)
+        {
+            if (btcpayHost == null)
+                throw new ArgumentNullException(nameof(btcpayHost));
+            _btcpayHost = btcpayHost;
+            _httpClient = httpClient ?? new HttpClient();
+        }
+        public BTCPayServerClient(Uri btcpayHost, string APIKey, HttpClient httpClient = null)
+        {
+            _apiKey = APIKey;
+            _btcpayHost = btcpayHost;
+            _httpClient = httpClient ?? new HttpClient();
+        }
+
+        public BTCPayServerClient(Uri btcpayHost, string username, string password, HttpClient httpClient = null)
+        {
+            _apiKey = APIKey;
+            _btcpayHost = btcpayHost;
+            _username = username;
+            _password = password;
+            _httpClient = httpClient ?? new HttpClient();
+        }
+
+        protected async Task HandleResponse(HttpResponseMessage message)
+        {
+            if (!message.IsSuccessStatusCode && message.Content?.Headers?.ContentType?.MediaType?.StartsWith("application/json", StringComparison.OrdinalIgnoreCase) is true)
+            {
+                if (message.StatusCode == System.Net.HttpStatusCode.UnprocessableEntity)
+                {
+                    var err = JsonConvert.DeserializeObject<Models.GreenfieldValidationError[]>(await message.Content.ReadAsStringAsync());
+                    throw new GreenfieldValidationException(err);
+                }
+                if (message.StatusCode == System.Net.HttpStatusCode.Forbidden)
+                {
+                    var err = JsonConvert.DeserializeObject<Models.GreenfieldPermissionAPIError>(await message.Content.ReadAsStringAsync());
+                    throw new GreenfieldAPIException((int)message.StatusCode, err);
+                }
+                else
+                {
+                    var err = JsonConvert.DeserializeObject<Models.GreenfieldAPIError>(await message.Content.ReadAsStringAsync());
+                    if (err.Code != null)
+                        throw new GreenfieldAPIException((int)message.StatusCode, err);
+                }
+            }
+            message.EnsureSuccessStatusCode();
+        }
+
+        protected async Task<T> HandleResponse<T>(HttpResponseMessage message)
+        {
+            await HandleResponse(message);
+            var str = await message.Content.ReadAsStringAsync();
+            return JsonConvert.DeserializeObject<T>(str);
+        }
+
+        public async Task<T> SendHttpRequest<T>(string path,
+            Dictionary<string, object> queryPayload = null,
+            HttpMethod method = null, CancellationToken cancellationToken = default)
+        {
+            using var resp = await _httpClient.SendAsync(CreateHttpRequest(path, queryPayload, method), cancellationToken);
+            return await HandleResponse<T>(resp);
+        }
+        public async Task<T> SendHttpRequest<T>(string path,
+        object bodyPayload = null,
+        HttpMethod method = null, CancellationToken cancellationToken = default)
+        {
+            using var resp = await _httpClient.SendAsync(CreateHttpRequest(path: path, bodyPayload: bodyPayload, method: method), cancellationToken);
+            return await HandleResponse<T>(resp);
+        }
+        protected virtual HttpRequestMessage CreateHttpRequest(string path,
+            Dictionary<string, object> queryPayload = null,
+            HttpMethod method = null)
+        {
+            UriBuilder uriBuilder = new UriBuilder(_btcpayHost) { Path = path };
+            if (queryPayload != null && queryPayload.Any())
+            {
+                AppendPayloadToQuery(uriBuilder, queryPayload);
+            }
+
+            var httpRequest = new HttpRequestMessage(method ?? HttpMethod.Get, uriBuilder.Uri);
+            if (_apiKey != null)
+                httpRequest.Headers.Authorization = new AuthenticationHeaderValue("token", _apiKey);
+            else if (!string.IsNullOrEmpty(_username))
+            {
+                httpRequest.Headers.Authorization = new AuthenticationHeaderValue("Basic", System.Convert.ToBase64String(Encoding.ASCII.GetBytes(_username + ":" + _password)));
+            }
+
+
+            return httpRequest;
+        }
+
+        protected virtual HttpRequestMessage CreateHttpRequest<T>(string path,
+            Dictionary<string, object> queryPayload = null,
+            T bodyPayload = default, HttpMethod method = null)
+        {
+            var request = CreateHttpRequest(path, queryPayload, method);
+            if (typeof(T).IsPrimitive || !EqualityComparer<T>.Default.Equals(bodyPayload, default(T)))
+            {
+                request.Content = new StringContent(JsonConvert.SerializeObject(bodyPayload), Encoding.UTF8, "application/json");
+            }
+
+            return request;
+        }
+
+        public static void AppendPayloadToQuery(UriBuilder uri, KeyValuePair<string, object> keyValuePair)
+        {
+            if (uri.Query.Length > 1)
+                uri.Query += "&";
+
+            UriBuilder uriBuilder = uri;
+            if (!(keyValuePair.Value is string) &&
+                keyValuePair.Value.GetType().GetInterfaces().Contains((typeof(IEnumerable))))
+            {
+                foreach (var item in (IEnumerable)keyValuePair.Value)
+                {
+                    uriBuilder.Query = uriBuilder.Query + Uri.EscapeDataString(keyValuePair.Key) + "=" +
+                                       Uri.EscapeDataString(item.ToString()) + "&";
+                }
+            }
+            else
+            {
+                uriBuilder.Query = uriBuilder.Query + Uri.EscapeDataString(keyValuePair.Key) + "=" +
+                                   Uri.EscapeDataString(keyValuePair.Value.ToString()) + "&";
+            }
+            uri.Query = uri.Query.Trim('&');
+        }
+
+        public static void AppendPayloadToQuery(UriBuilder uri, Dictionary<string, object> payload)
+        {
+            if (uri.Query.Length > 1)
+                uri.Query += "&";
+            foreach (KeyValuePair<string, object> keyValuePair in payload)
+            {
+                AppendPayloadToQuery(uri, keyValuePair);
+            }
+        }
+    }
+}

BTCPayServer.Client/GreenFieldAPIException.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace BTCPayServer.Client
+{
+    public class GreenfieldAPIException : Exception
+    {
+        public GreenfieldAPIException(int httpCode, Models.GreenfieldAPIError error) : base(error.Message)
+        {
+            if (error == null)
+                throw new ArgumentNullException(nameof(error));
+            HttpCode = httpCode;
+            APIError = error;
+        }
+        public Models.GreenfieldAPIError APIError { get; }
+        public int HttpCode { get; set; }
+    }
+}

BTCPayServer.Client/GreenFieldValidationException.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Text;
+using BTCPayServer.Client.Models;
+
+namespace BTCPayServer.Client
+{
+    public class GreenfieldValidationException : Exception
+    {
+        public GreenfieldValidationException(Models.GreenfieldValidationError[] errors) : base(BuildMessage(errors))
+        {
+            ValidationErrors = errors;
+        }
+
+        private static string BuildMessage(GreenfieldValidationError[] errors)
+        {
+            if (errors == null)
+                throw new ArgumentNullException(nameof(errors));
+            StringBuilder builder = new StringBuilder();
+            foreach (var error in errors)
+            {
+                builder.AppendLine($"{error.Path}: {error.Message}");
+            }
+            return builder.ToString();
+        }
+
+        public Models.GreenfieldValidationError[] ValidationErrors { get; }
+    }
+}

BTCPayServer.Client/JsonConverters/LightMoneyJsonConverter.cs

@@ -0,0 +1,15 @@
+using System.Globalization;
+using BTCPayServer.Lightning;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.JsonConverters
+{
+    public class LightMoneyJsonConverter : BTCPayServer.Lightning.JsonConverters.LightMoneyJsonConverter
+    {
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            if (value != null)
+                writer.WriteValue(((LightMoney)value).MilliSatoshi.ToString(CultureInfo.InvariantCulture));
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/MnemonicJsonConverter.cs

@@ -0,0 +1,31 @@
+using System;
+using NBitcoin;
+using NBitcoin.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.JsonConverters
+{
+    public class MnemonicJsonConverter : JsonConverter<Mnemonic>
+    {
+        public override Mnemonic ReadJson(JsonReader reader, Type objectType, Mnemonic existingValue, bool hasExistingValue,
+            JsonSerializer serializer)
+        {
+            return reader.TokenType switch
+            {
+                JsonToken.String => new Mnemonic((string)reader.Value),
+                JsonToken.Null => null,
+                _ => throw new JsonObjectException(reader.Path, "Mnemonic must be a json string")
+            };
+        }
+
+        public override void WriteJson(JsonWriter writer, Mnemonic value, JsonSerializer serializer)
+        {
+            if (value != null)
+                writer.WriteValue(value.ToString());
+            else
+            {
+                writer.WriteNull();
+            }
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/MoneyJsonConverter.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Globalization;
+using NBitcoin;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.JsonConverters
+{
+    public class MoneyJsonConverter : NBitcoin.JsonConverters.MoneyJsonConverter
+    {
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            if (reader.TokenType == JsonToken.String)
+            {
+                return new Money(long.Parse((string)reader.Value));
+            }
+            return base.ReadJson(reader, objectType, existingValue, serializer);
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            if (value != null)
+                writer.WriteValue(((Money)value).Satoshi.ToString(CultureInfo.InvariantCulture));
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/NodeUriJsonConverter.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using BTCPayServer.Lightning;
+using NBitcoin.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.JsonConverters
+{
+    public class NodeUriJsonConverter : JsonConverter<NodeInfo>
+    {
+        public override NodeInfo ReadJson(JsonReader reader, Type objectType, [AllowNull] NodeInfo existingValue, bool hasExistingValue, JsonSerializer serializer)
+        {
+            if (reader.TokenType != JsonToken.String)
+                throw new JsonObjectException(reader.Path, "Unexpected token type for NodeUri");
+            if (NodeInfo.TryParse((string)reader.Value, out var info))
+                return info;
+            throw new JsonObjectException(reader.Path, "Invalid NodeUri");
+        }
+
+        public override void WriteJson(JsonWriter writer, [AllowNull] NodeInfo value, JsonSerializer serializer)
+        {
+            if (value is not null)
+                writer.WriteValue(value.ToString());
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/NumericStringJsonConverter.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Globalization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace BTCPayServer.JsonConverters
+{
+    public class NumericStringJsonConverter : JsonConverter
+    {
+        public override bool CanConvert(Type objectType)
+        {
+            return (objectType == typeof(decimal) ||
+                    objectType == typeof(decimal?) ||
+                    objectType == typeof(double) ||
+                    objectType == typeof(double?));
+        }
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue,
+            JsonSerializer serializer)
+        {
+            JToken token = JToken.Load(reader);
+            switch (token.Type)
+            {
+                case JTokenType.Float:
+                    if (objectType == typeof(decimal) || objectType == typeof(decimal?))
+                        return token.Value<decimal>();
+                    if (objectType == typeof(double) || objectType == typeof(double?))
+                        return token.Value<double>();
+                    throw new JsonSerializationException("Unexpected object type: " + objectType);
+                case JTokenType.Integer:
+                case JTokenType.String:
+                    if (objectType == typeof(decimal) || objectType == typeof(decimal?))
+                        return decimal.Parse(token.ToString(), CultureInfo.InvariantCulture);
+                    if (objectType == typeof(double) || objectType == typeof(double?))
+                        return double.Parse(token.ToString(), CultureInfo.InvariantCulture);
+                    throw new JsonSerializationException("Unexpected object type: " + objectType);
+                case JTokenType.Null when objectType == typeof(decimal?) || objectType == typeof(double?):
+                    return null;
+                default:
+                    throw new JsonSerializationException("Unexpected token type: " +
+                                                         token.Type);
+            }
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            switch (value)
+            {
+                case null:
+                    break;
+                case decimal x:
+                    writer.WriteValue(x.ToString(CultureInfo.InvariantCulture));
+                    break;
+                case double x:
+                    writer.WriteValue(x.ToString(CultureInfo.InvariantCulture));
+                    break;
+            }
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/PermissionJsonConverter.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Reflection;
+using NBitcoin.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.JsonConverters
+{
+    public class PermissionJsonConverter : JsonConverter
+    {
+        public override bool CanConvert(Type objectType)
+        {
+            return typeof(Permission).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo());
+        }
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            if (reader.TokenType == JsonToken.Null)
+                return null;
+            if (reader.TokenType != JsonToken.String)
+                throw new JsonObjectException("Type 'Permission' is expected to be a 'String'", reader);
+            if (reader.Value is String s && Permission.TryParse(s, out var permission))
+                return permission;
+            throw new JsonObjectException("Invalid 'Permission' String", reader);
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            if (value is Permission v)
+                writer.WriteValue(v.ToString());
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/TimeSpanJsonConverter.cs

@@ -0,0 +1,79 @@
+using System;
+using NBitcoin.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.JsonConverters
+{
+    public abstract class TimeSpanJsonConverter : JsonConverter
+    {
+        public class Seconds : TimeSpanJsonConverter
+        {
+            protected override long ToLong(TimeSpan value)
+            {
+                return (long)value.TotalSeconds;
+            }
+
+            protected override TimeSpan ToTimespan(long value)
+            {
+                return TimeSpan.FromSeconds(value);
+            }
+        }
+        public class Minutes : TimeSpanJsonConverter
+        {
+            protected override long ToLong(TimeSpan value)
+            {
+                return (long)value.TotalMinutes;
+            }
+            protected override TimeSpan ToTimespan(long value)
+            {
+                return TimeSpan.FromMinutes(value);
+            }
+        }
+        public class Days : TimeSpanJsonConverter
+        {
+            protected override long ToLong(TimeSpan value)
+            {
+                return (long)value.TotalDays;
+            }
+            protected override TimeSpan ToTimespan(long value)
+            {
+                return TimeSpan.FromDays(value);
+            }
+        }
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType == typeof(TimeSpan) || objectType == typeof(TimeSpan?);
+        }
+
+        protected abstract TimeSpan ToTimespan(long value);
+        protected abstract long ToLong(TimeSpan value);
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            try
+            {
+                var nullable = objectType == typeof(TimeSpan?);
+                if (reader.TokenType == JsonToken.Null)
+                {
+                    if (nullable)
+                        return null;
+                    return TimeSpan.Zero;
+                }
+                if (reader.TokenType != JsonToken.Integer)
+                    throw new JsonObjectException("Invalid timespan, expected integer", reader);
+                return ToTimespan((long)reader.Value);
+            }
+            catch
+            {
+                throw new JsonObjectException("Invalid timespan", reader);
+            }
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            if (value is TimeSpan s)
+            {
+                writer.WriteValue(ToLong(s));
+            }
+        }
+    }
+}

BTCPayServer.Client/JsonConverters/WordcountJsonConverter.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using NBitcoin;
+using Newtonsoft.Json;
+
+public class WordcountJsonConverter : JsonConverter
+{
+    static WordcountJsonConverter()
+    {
+        _Wordcount = new Dictionary<long, WordCount>()
+        {
+            {18, WordCount.Eighteen},
+            {15, WordCount.Fifteen},
+            {12, WordCount.Twelve},
+            {24, WordCount.TwentyFour},
+            {21, WordCount.TwentyOne}
+        };
+        _WordcountReverse = _Wordcount.ToDictionary(kv => kv.Value, kv => kv.Key);
+    }
+
+    public override bool CanConvert(Type objectType)
+    {
+        return typeof(NBitcoin.WordCount).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo()) ||
+               typeof(NBitcoin.WordCount?).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo());
+    }
+
+    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+    {
+        if (reader.TokenType == JsonToken.Null)
+            return default;
+        if (reader.TokenType != JsonToken.Integer)
+            throw new NBitcoin.JsonConverters.JsonObjectException(
+                $"Unexpected json token type, expected Integer, actual {reader.TokenType}", reader);
+        if (!_Wordcount.TryGetValue((long)reader.Value, out var result))
+            throw new NBitcoin.JsonConverters.JsonObjectException(
+                $"Invalid WordCount, possible values {string.Join(", ", _Wordcount.Keys.ToArray())} (default: 12)",
+                reader);
+        return result;
+    }
+
+    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+    {
+        if (value is WordCount wc)
+            writer.WriteValue(_WordcountReverse[wc]);
+    }
+
+    readonly static Dictionary<long, WordCount> _Wordcount = new Dictionary<long, WordCount>()
+    {
+        {18, WordCount.Eighteen},
+        {15, WordCount.Fifteen},
+        {12, WordCount.Twelve},
+        {24, WordCount.TwentyFour},
+        {21, WordCount.TwentyOne}
+    };
+
+    readonly static Dictionary<WordCount, long> _WordcountReverse;
+}

BTCPayServer.Client/JsonConverters/WordlistJsonConverter.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using NBitcoin;
+using Newtonsoft.Json;
+
+public class WordlistJsonConverter : JsonConverter
+{
+    static WordlistJsonConverter()
+    {
+
+        _Wordlists = new Dictionary<string, Wordlist>(StringComparer.OrdinalIgnoreCase)
+        {
+            {"English", Wordlist.English},
+            {"Japanese", Wordlist.Japanese},
+            {"Spanish", Wordlist.Spanish},
+            {"ChineseSimplified", Wordlist.ChineseSimplified},
+            {"ChineseTraditional", Wordlist.ChineseTraditional},
+            {"French", Wordlist.French},
+            {"PortugueseBrazil", Wordlist.PortugueseBrazil},
+            {"Czech", Wordlist.Czech}
+        };
+
+        _WordlistsReverse = _Wordlists.ToDictionary(kv => kv.Value, kv => kv.Key);
+    }
+
+    public override bool CanConvert(Type objectType)
+    {
+        return typeof(Wordlist).GetTypeInfo().IsAssignableFrom(objectType.GetTypeInfo());
+    }
+
+    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+    {
+        if (reader.TokenType == JsonToken.Null)
+            return null;
+        if (reader.TokenType != JsonToken.String)
+            throw new NBitcoin.JsonConverters.JsonObjectException(
+                $"Unexpected json token type, expected String, actual {reader.TokenType}", reader);
+        if (!_Wordlists.TryGetValue((string)reader.Value, out var result))
+            throw new NBitcoin.JsonConverters.JsonObjectException(
+                $"Invalid wordlist, possible values {string.Join(", ", _Wordlists.Keys.ToArray())} (default: English)",
+                reader);
+        return result;
+    }
+
+    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+    {
+        if (value is Wordlist wl)
+            writer.WriteValue(_WordlistsReverse[wl]);
+    }
+
+    readonly static Dictionary<string, Wordlist> _Wordlists;
+    readonly static Dictionary<Wordlist, string> _WordlistsReverse;
+}

BTCPayServer.Client/Models/AddCustomerEmailRequest.cs

@@ -0,0 +1,7 @@
+namespace BTCPayServer.Client.Models
+{
+    public class AddCustomerEmailRequest
+    {
+        public string Email { get; set; }
+    }
+}

BTCPayServer.Client/Models/ApiHealthData.cs

@@ -0,0 +1,7 @@
+namespace BTCPayServer.Client.Models
+{
+    public class ApiHealthData
+    {
+        public bool Synchronized { get; set; }
+    }
+}

BTCPayServer.Client/Models/ApiKeyData.cs

@@ -0,0 +1,14 @@
+using BTCPayServer.Client.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class ApiKeyData
+    {
+        public string ApiKey { get; set; }
+        public string Label { get; set; }
+
+        [JsonProperty(ItemConverterType = typeof(PermissionJsonConverter))]
+        public Permission[] Permissions { get; set; }
+    }
+}

BTCPayServer.Client/Models/ApplicationUserData.cs

@@ -0,0 +1,39 @@
+using System;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class ApplicationUserData
+    {
+        /// <summary>
+        /// the id of the user
+        /// </summary>
+        public string Id { get; set; }
+
+        /// <summary>
+        /// the email AND username of the user
+        /// </summary>
+        public string Email { get; set; }
+
+        /// <summary>
+        /// Whether the user has verified their email
+        /// </summary>
+        public bool EmailConfirmed { get; set; }
+
+        /// <summary>
+        /// whether the user needed to verify their email on account creation
+        /// </summary>
+        public bool RequiresEmailConfirmation { get; set; }
+
+        /// <summary>
+        /// the roles of the user
+        /// </summary>
+        public string[] Roles { get; set; }
+
+        /// <summary>
+        /// the date the user was created. Null if created before v1.0.5.6.
+        /// </summary>
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset? Created { get; set; }
+    }
+}

BTCPayServer.Client/Models/ApprovePayoutRequest.cs

@@ -0,0 +1,8 @@
+namespace BTCPayServer.Client.Models
+{
+    public class ApprovePayoutRequest
+    {
+        public int Revision { get; set; }
+        public string RateRule { get; set; }
+    }
+}

BTCPayServer.Client/Models/ConnectToNodeRequest.cs

@@ -0,0 +1,21 @@
+using BTCPayServer.Client.JsonConverters;
+using BTCPayServer.Lightning;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class ConnectToNodeRequest
+    {
+        public ConnectToNodeRequest()
+        {
+
+        }
+        public ConnectToNodeRequest(NodeInfo nodeInfo)
+        {
+            NodeURI = nodeInfo;
+        }
+        [JsonConverter(typeof(NodeUriJsonConverter))]
+        [JsonProperty("nodeURI")]
+        public NodeInfo NodeURI { get; set; }
+    }
+}

BTCPayServer.Client/Models/CreateApiKeyRequest.cs

@@ -0,0 +1,13 @@
+using BTCPayServer.Client.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreateApiKeyRequest
+    {
+        public string Label { get; set; }
+
+        [JsonProperty(ItemConverterType = typeof(PermissionJsonConverter))]
+        public Permission[] Permissions { get; set; }
+    }
+}

BTCPayServer.Client/Models/CreateApplicationUserRequest.cs

@@ -0,0 +1,20 @@
+namespace BTCPayServer.Client.Models
+{
+    public class CreateApplicationUserRequest
+    {
+        /// <summary>
+        /// the email AND username of the new user
+        /// </summary>
+        public string Email { get; set; }
+
+        /// <summary>
+        /// password of the new user
+        /// </summary>
+        public string Password { get; set; }
+
+        /// <summary>
+        /// Whether this user is an administrator. If left null and there are no admins in the system, the user will be created as an admin.
+        /// </summary>
+        public bool? IsAdministrator { get; set; }
+    }
+}

BTCPayServer.Client/Models/CreateInvoiceRequest.cs

@@ -0,0 +1,12 @@
+using BTCPayServer.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreateInvoiceRequest : InvoiceDataBase
+    {
+        [JsonConverter(typeof(NumericStringJsonConverter))]
+        public decimal? Amount { get; set; }
+        public string[] AdditionalSearchTerms { get; set; }
+    }
+}

BTCPayServer.Client/Models/CreateLightningInvoiceRequest.cs

@@ -0,0 +1,28 @@
+using System;
+using BTCPayServer.Lightning;
+using BTCPayServer.Lightning.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreateLightningInvoiceRequest
+    {
+        public CreateLightningInvoiceRequest()
+        {
+
+        }
+        public CreateLightningInvoiceRequest(LightMoney amount, string description, TimeSpan expiry)
+        {
+            Amount = amount;
+            Description = description;
+            Expiry = expiry;
+        }
+        [JsonConverter(typeof(BTCPayServer.Client.JsonConverters.LightMoneyJsonConverter))]
+        public LightMoney Amount { get; set; }
+        public string Description { get; set; }
+        [JsonConverter(typeof(JsonConverters.TimeSpanJsonConverter.Seconds))]
+        public TimeSpan Expiry { get; set; }
+        public bool PrivateRouteHints { get; set; }
+
+    }
+}

BTCPayServer.Client/Models/CreateOnChainTransactionRequest.cs

@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+using BTCPayServer.JsonConverters;
+using NBitcoin;
+using NBitcoin.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreateOnChainTransactionRequest
+    {
+
+        public class CreateOnChainTransactionRequestDestination
+        {
+            public string Destination { get; set; }
+            [JsonConverter(typeof(NumericStringJsonConverter))]
+            public decimal? Amount { get; set; }
+            public bool SubtractFromAmount { get; set; }
+        }
+        [JsonConverter(typeof(FeeRateJsonConverter))]
+        public FeeRate FeeRate { get; set; }
+        public bool ProceedWithPayjoin { get; set; } = true;
+        public bool ProceedWithBroadcast { get; set; } = true;
+        public bool NoChange { get; set; } = false;
+        [JsonProperty(ItemConverterType = typeof(OutpointJsonConverter))]
+        public List<OutPoint> SelectedInputs { get; set; } = null;
+        public List<CreateOnChainTransactionRequestDestination> Destinations { get; set; }
+        [JsonProperty("rbf")]
+        public bool? RBF { get; set; } = null;
+    }
+}

BTCPayServer.Client/Models/CreatePaymentRequestRequest.cs

@@ -0,0 +1,6 @@
+namespace BTCPayServer.Client.Models
+{
+    public class CreatePaymentRequestRequest : PaymentRequestBaseData
+    {
+    }
+}

BTCPayServer.Client/Models/CreatePayoutRequest.cs

@@ -0,0 +1,13 @@
+using BTCPayServer.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreatePayoutRequest
+    {
+        public string Destination { get; set; }
+        [JsonConverter(typeof(NumericStringJsonConverter))]
+        public decimal? Amount { get; set; }
+        public string PaymentMethod { get; set; }
+    }
+}

BTCPayServer.Client/Models/CreatePullPaymentRequest.cs

@@ -0,0 +1,26 @@
+using System;
+using BTCPayServer.Client.JsonConverters;
+using BTCPayServer.JsonConverters;
+using Newtonsoft.Json;
+
+namespace BTCPayServer.Client.Models
+{
+    public class CreatePullPaymentRequest
+    {
+        public string Name { get; set; }
+        public string Description { get; set; }
+        [JsonProperty(ItemConverterType = typeof(NumericStringJsonConverter))]
+        public decimal Amount { get; set; }
+        public string Currency { get; set; }
+        [JsonConverter(typeof(TimeSpanJsonConverter.Seconds))]
+        public TimeSpan? Period { get; set; }
+        [JsonConverter(typeof(TimeSpanJsonConverter.Days))]
+        [JsonProperty("BOLT11Expiration")]
+        public TimeSpan? BOLT11Expiration { get; set; }
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset? ExpiresAt { get; set; }
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset? StartsAt { get; set; }
+        public string[] PaymentMethods { get; set; }
+    }
+}

BTCPayServer.Client/Models/CreateStoreRequest.cs

@@ -0,0 +1,6 @@
+namespace BTCPayServer.Client.Models
+{
+    public class CreateStoreRequest : StoreBaseData
+    {
+    }
+}

BTCPayServer.Client/Models/GenerateOnChainWalletRequest.cs

@@ -0,0 +1,25 @@
+using BTCPayServer.Client.JsonConverters;
+using NBitcoin;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+
+namespace BTCPayServer.Client
+{
+    public class GenerateOnChainWalletRequest
+    {
+        public int AccountNumber { get; set; } = 0;
+        [JsonConverter(typeof(MnemonicJsonConverter))]
+        public Mnemonic ExistingMnemonic { get; set; }
+        [JsonConverter(typeof(WordlistJsonConverter))]
+        public NBitcoin.Wordlist WordList { get; set; }
+
+        [JsonConverter(typeof(WordcountJsonConverter))]
+        public NBitcoin.WordCount? WordCount { get; set; } = NBitcoin.WordCount.Twelve;
+
+        [JsonConverter(typeof(StringEnumConverter))]
+        public NBitcoin.ScriptPubKeyType ScriptPubKeyType { get; set; } = ScriptPubKeyType.Segwit;
+        public string Passphrase { get; set; }
+        public bool ImportKeysToRPC { get; set; }
+        public bool SavePrivateKeys { get; set; }
+    }
+}

BTCPayServer.Client/Models/GenericPaymentMethodData.cs

@@ -0,0 +1,9 @@
+namespace BTCPayServer.Client.Models
+{
+    public class GenericPaymentMethodData
+    {
+        public bool Enabled { get; set; }
+        public object Data { get; set; }
+        public string CryptoCode { get; set; }
+    }
+}

BTCPayServer.Client/Models/GreenfieldAPIError.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace BTCPayServer.Client.Models
+{
+    public class GreenfieldAPIError
+    {
+        public GreenfieldAPIError()
+        {
+
+        }
+        public GreenfieldAPIError(string code, string message)
+        {
+            code = code ?? "generic-error";
+            if (message == null)
+                throw new ArgumentNullException(nameof(message));
+            Code = code;
+            Message = message;
+        }
+        public string Code { get; set; }
+        public string Message { get; set; }
+    }
+}

BTCPayServer.Client/Models/GreenfieldPermissionAPIError.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace BTCPayServer.Client.Models
+{
+    public class GreenfieldPermissionAPIError : GreenfieldAPIError
+    {
+        public GreenfieldPermissionAPIError(string missingPermission, string message = null) : base()
+        {
+            MissingPermission = missingPermission;
+            Code = "missing-permission";
+            Message = message ?? $"Insufficient API Permissions. Please use an API key with permission \"{MissingPermission}\". You can create an API key in your account's settings / Api Keys.";
+        }
+
+        public string MissingPermission { get; }
+
+    }
+}

BTCPayServer.Client/Models/GreenfieldValidationError.cs

@@ -0,0 +1,24 @@
+using System;
+
+namespace BTCPayServer.Client.Models
+{
+    public class GreenfieldValidationError
+    {
+        public GreenfieldValidationError()
+        {
+
+        }
+        public GreenfieldValidationError(string path, string message)
+        {
+            if (path == null)
+                throw new ArgumentNullException(nameof(path));
+            if (message == null)
+                throw new ArgumentNullException(nameof(message));
+            Path = path;
+            Message = message;
+        }
+
+        public string Path { get; set; }
+        public string Message { get; set; }
+    }
+}

BTCPayServer.Client/Models/InvoiceData.cs

@@ -0,0 +1,76 @@
+using System;
+using BTCPayServer.Client.JsonConverters;
+using BTCPayServer.JsonConverters;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Linq;
+
+namespace BTCPayServer.Client.Models
+{
+    public enum InvoiceType
+    {
+        Standard,
+        TopUp
+    }
+    public class InvoiceDataBase
+    {
+        [JsonConverter(typeof(StringEnumConverter))]
+        public InvoiceType Type { get; set; }
+        public string Currency { get; set; }
+        public JObject Metadata { get; set; }
+        public CheckoutOptions Checkout { get; set; } = new CheckoutOptions();
+        public class CheckoutOptions
+        {
+
+            [JsonConverter(typeof(StringEnumConverter))]
+            public SpeedPolicy? SpeedPolicy { get; set; }
+
+            public string[] PaymentMethods { get; set; }
+            public string DefaultPaymentMethod { get; set; }
+
+            [JsonConverter(typeof(TimeSpanJsonConverter.Minutes))]
+            [JsonProperty("expirationMinutes")]
+            public TimeSpan? Expiration { get; set; }
+            [JsonConverter(typeof(TimeSpanJsonConverter.Minutes))]
+            [JsonProperty("monitoringMinutes")]
+            public TimeSpan? Monitoring { get; set; }
+
+            public double? PaymentTolerance { get; set; }
+            [JsonProperty("redirectURL")]
+            public string RedirectURL { get; set; }
+
+            public bool? RedirectAutomatically { get; set; }
+            public bool? RequiresRefundEmail { get; set; } = null;
+            public string DefaultLanguage { get; set; }
+        }
+    }
+    public class InvoiceData : InvoiceDataBase
+    {
+        public string Id { get; set; }
+        public string StoreId { get; set; }
+        [JsonConverter(typeof(NumericStringJsonConverter))]
+        public decimal Amount { get; set; }
+        public string CheckoutLink { get; set; }
+        [JsonConverter(typeof(StringEnumConverter))]
+        public InvoiceStatus Status { get; set; }
+        [JsonConverter(typeof(StringEnumConverter))]
+        public InvoiceExceptionStatus AdditionalStatus { get; set; }
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset MonitoringExpiration { get; set; }
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset ExpirationTime { get; set; }
+        [JsonConverter(typeof(NBitcoin.JsonConverters.DateTimeToUnixTimeConverter))]
+        public DateTimeOffset CreatedTime { get; set; }
+        [JsonProperty(ItemConverterType = typeof(StringEnumConverter))]
+        public InvoiceStatus[] AvailableStatusesForManualMarking { get; set; }
+        public bool Archived { get; set; }
+    }
+    public enum InvoiceStatus
+    {
+        New,
+        Processing,
+        Expired,
+        Invalid,
+        Settled
+    }
+}