docs: enable Microsoft Teams Notifications (#14781)

docs/admin/notifications/teams.md

@@ -0,0 +1,160 @@
+# Microsoft Teams Notifications
+
+[Microsoft Teams](https://www.microsoft.com/en-us/microsoft-teams) is a widely
+used collaboration platform, and with Coder's integration, you can enable
+automated notifications directly within Teams using workflows and
+[Adaptive Cards](https://adaptivecards.io/)
+
+Administrators can configure Coder to send notifications via an incoming webhook
+endpoint. These notifications appear as messages in Teams chats, either with the
+Flow Bot or a specified user/service account.
+
+## Requirements
+
+Before setting up Microsoft Teams notifications, ensure that you have the
+following:
+
+- Administrator access to the Teams platform
+- Coder platform with notifications enabled
+
+## Build Teams Workflow
+
+The process of setting up a Teams workflow consists of three key steps:
+
+1.  Configure the Webhook Trigger.
+
+    Begin by configuring the trigger: **"When a Teams webhook request is
+    received"**.
+
+    Ensure the trigger access level is set to **"Anyone"**.
+
+2.  Setup the JSON Parsing Action.
+
+    Next, add the **"Parse JSON"** action, linking the content to the **"Body"**
+    of the received webhook request. Use the following schema to parse the
+    notification payload:
+
+    ```json
+    {
+    	"type": "object",
+    	"properties": {
+    		"_version": {
+    			"type": "string"
+    		},
+    		"payload": {
+    			"type": "object",
+    			"properties": {
+    				"_version": {
+    					"type": "string"
+    				},
+    				"user_email": {
+    					"type": "string"
+    				},
+    				"actions": {
+    					"type": "array",
+    					"items": {
+    						"type": "object",
+    						"properties": {
+    							"label": {
+    								"type": "string"
+    							},
+    							"url": {
+    								"type": "string"
+    							}
+    						},
+    						"required": ["label", "url"]
+    					}
+    				}
+    			}
+    		},
+    		"title": {
+    			"type": "string"
+    		},
+    		"body": {
+    			"type": "string"
+    		}
+    	}
+    }
+    ```
+
+    This action parses the notification's title, body, and the recipient's email
+    address.
+
+3.  Configure the Adaptive Card Action.
+
+    Finally, set up the **"Post Adaptive Card in a chat or channel"** action
+    with the following recommended settings:
+
+    **Post as**: Flow Bot
+
+    **Post in**: Chat with Flow Bot
+
+    **Recipient**: `user_email`
+
+    Use the following _Adaptive Card_ template:
+
+    ```json
+    {
+    	"$schema": "https://adaptivecards.io/schemas/adaptive-card.json",
+    	"type": "AdaptiveCard",
+    	"version": "1.0",
+    	"body": [
+    		{
+    			"type": "Image",
+    			"url": "https://coder.com/coder-logo-horizontal.png",
+    			"height": "40px",
+    			"altText": "Coder",
+    			"horizontalAlignment": "center"
+    		},
+    		{
+    			"type": "TextBlock",
+    			"text": "**@{replace(body('Parse_JSON')?['title'], '"', '\"')}**"
+    		},
+    		{
+    			"type": "TextBlock",
+    			"text": "@{replace(body('Parse_JSON')?['body'], '"', '\"')}",
+    			"wrap": true
+    		},
+    		{
+    			"type": "ActionSet",
+    			"actions": [@{replace(replace(join(body('Parse_JSON')?['payload']?['actions'], ','), '{', '{"type": "Action.OpenUrl",'), '"label"', '"title"')}]
+    		}
+    	]
+    }
+    ```
+
+    _Notice_: The Coder `actions` format differs from the `ActionSet` schema, so
+    its properties need to be modified: include `Action.OpenUrl` type, rename
+    `label` to `title`. Unfortunately, there is no straightforward solution for
+    `for-each` pattern.
+
+    Feel free to customize the payload to modify the logo, notification title,
+    or body content to suit your needs.
+
+## Enable Webhook Integration
+
+To enable webhook integration in Coder, ensure the "notifications" experiment is
+activated by running the following command:
+
+```bash
+export CODER_EXPERIMENTS=notifications
+```
+
+Then, define the POST webhook endpoint created by your Teams workflow:
+
+```bash
+export CODER_NOTIFICATIONS_WEBHOOK_ENDPOINT=https://prod-16.eastus.logic.azure.com:443/workflows/f8fbe3e8211e4b638...`
+```
+
+Finally, go to the **Notification Settings** in Coder and switch the notifier to
+**Webhook**.
+
+## Limitations
+
+1. **Public Webhook Trigger**: The Teams webhook trigger must be open to the
+   public (**"Anyone"** can send the payload). It's recommended to keep the
+   endpoint secret and apply additional authorization layers to protect against
+   unauthorized access.
+
+2. **Markdown Support in Adaptive Cards**: Note that Adaptive Cards support a
+   [limited set of Markdown tags](https://learn.microsoft.com/en-us/microsoftteams/platform/task-modules-and-cards/cards/cards-format?tabs=adaptive-md%2Cdesktop%2Cconnector-html).

docs/manifest.json

@@ -516,7 +516,14 @@
 					"title": "Notifications",
 					"description": "Learn how to configure notifications",
 					"path": "./admin/notifications.md",
-					"icon_path": "./images/icons/info.svg"
+					"icon_path": "./images/icons/info.svg",
+					"children": [
+						{
+							"title": "Microsoft Teams Notifications",
+							"description": "Learn how to setup Microsoft Teams notifications",
+							"path": "./admin/notifications/teams.md"
+						}
+					]
 				}
 			]
 		},