feat: add has-ai-task filters to the /workspaces and /templates endpoints (#18387)

This PR allows filtering templates and workspaces with the `has-ai-task`
filter as described in the [Coder Tasks
RFC](https://www.notion.so/coderhq/Coder-Tasks-207d579be5928053ab68c8d9a4b59eaa?source=copy_link#20ad579be59280e6a000eb0646d3c2df).

coderd/database/queries/templates.sql

@@ -10,34 +10,36 @@ LIMIT
 
 -- name: GetTemplatesWithFilter :many
 SELECT
-	*
+	t.*
 FROM
-	template_with_names AS templates
+	template_with_names AS t
+LEFT JOIN
+	template_versions tv ON t.active_version_id = tv.id
 WHERE
 	-- Optionally include deleted templates
-	templates.deleted = @deleted
+	t.deleted = @deleted
 	-- Filter by organization_id
 	AND CASE
 		WHEN @organization_id :: uuid != '00000000-0000-0000-0000-000000000000'::uuid THEN
-			organization_id = @organization_id
+			t.organization_id = @organization_id
 		ELSE true
 	END
 	-- Filter by exact name
 	AND CASE
 		WHEN @exact_name :: text != '' THEN
-			LOWER("name") = LOWER(@exact_name)
+			LOWER(t.name) = LOWER(@exact_name)
 		ELSE true
 	END
 	-- Filter by name, matching on substring
 	AND CASE
 		WHEN @fuzzy_name :: text != '' THEN
-			lower(name) ILIKE '%' || lower(@fuzzy_name) || '%'
+			lower(t.name) ILIKE '%' || lower(@fuzzy_name) || '%'
 		ELSE true
 	END
 	-- Filter by ids
 	AND CASE
 		WHEN array_length(@ids :: uuid[], 1) > 0 THEN
-			id = ANY(@ids)
+			t.id = ANY(@ids)
 		ELSE true
 	END
 	-- Filter by deprecated
@@ -45,15 +47,21 @@ WHERE
 		WHEN sqlc.narg('deprecated') :: boolean IS NOT NULL THEN
 			CASE
 				WHEN sqlc.narg('deprecated') :: boolean THEN
-					deprecated != ''
+					t.deprecated != ''
 				ELSE
-					deprecated = ''
+					t.deprecated = ''
 			END
 		ELSE true
 	END
+	-- Filter by has_ai_task in latest version
+	AND CASE
+		WHEN sqlc.narg('has_ai_task') :: boolean IS NOT NULL THEN
+			tv.has_ai_task = sqlc.narg('has_ai_task') :: boolean
+		ELSE true
+	END
   -- Authorize Filter clause will be injected below in GetAuthorizedTemplates
   -- @authorize_filter
-ORDER BY (name, id) ASC
+ORDER BY (t.name, t.id) ASC
 ;
 
 -- name: GetTemplateByOrganizationAndName :one

coderd/database/queries/workspaces.sql

@@ -116,7 +116,8 @@ SELECT
 	latest_build.canceled_at as latest_build_canceled_at,
 	latest_build.error as latest_build_error,
 	latest_build.transition as latest_build_transition,
-	latest_build.job_status as latest_build_status
+	latest_build.job_status as latest_build_status,
+	latest_build.has_ai_task as latest_build_has_ai_task
 FROM
 	workspaces_expanded as workspaces
 JOIN
@@ -128,6 +129,7 @@ LEFT JOIN LATERAL (
 		workspace_builds.id,
 		workspace_builds.transition,
 		workspace_builds.template_version_id,
+		workspace_builds.has_ai_task,
 		template_versions.name AS template_version_name,
 		provisioner_jobs.id AS provisioner_job_id,
 		provisioner_jobs.started_at,
@@ -345,6 +347,27 @@ WHERE
 			  (latest_build.template_version_id = template.active_version_id) = sqlc.narg('using_active') :: boolean
 		  ELSE true
 	END
+	-- Filter by has_ai_task in latest build
+	AND CASE
+		WHEN sqlc.narg('has_ai_task') :: boolean IS NOT NULL THEN
+			(COALESCE(latest_build.has_ai_task, false) OR (
+				-- If the build has no AI task, it means that the provisioner job is in progress
+				-- and we don't know if it has an AI task yet. In this case, we optimistically
+				-- assume that it has an AI task if the AI Prompt parameter is not empty. This
+				-- lets the AI Task frontend spawn a task and see it immediately after instead of
+				-- having to wait for the build to complete.
+				latest_build.has_ai_task IS NULL AND
+				latest_build.completed_at IS NULL AND
+				EXISTS (
+					SELECT 1
+					FROM workspace_build_parameters
+					WHERE workspace_build_parameters.workspace_build_id = latest_build.id
+					AND workspace_build_parameters.name = 'AI Prompt'
+					AND workspace_build_parameters.value != ''
+				)
+			)) = (sqlc.narg('has_ai_task') :: boolean)
+		ELSE true
+	END
 	-- Authorize Filter clause will be injected below in GetAuthorizedWorkspaces
 	-- @authorize_filter
 ), filtered_workspaces_order AS (
@@ -411,7 +434,8 @@ WHERE
 		'0001-01-01 00:00:00+00'::timestamptz, -- latest_build_canceled_at,
 		'', -- latest_build_error
 		'start'::workspace_transition, -- latest_build_transition
-		'unknown'::provisioner_job_status -- latest_build_status
+		'unknown'::provisioner_job_status, -- latest_build_status
+		false -- latest_build_has_ai_task
 	WHERE
 		@with_summary :: boolean = true
 ), total_count AS (