chore: import upstream snapshot with attribution

apps/sim/app/api/tools/slack/send-message/route.ts

@@ -0,0 +1,87 @@
+import { createLogger } from '@sim/logger'
+import { getErrorMessage } from '@sim/utils/errors'
+import { type NextRequest, NextResponse } from 'next/server'
+import { slackSendMessageContract } from '@/lib/api/contracts/tools/communication/slack'
+import { parseRequest } from '@/lib/api/server'
+import { checkInternalAuth } from '@/lib/auth/hybrid'
+import { generateRequestId } from '@/lib/core/utils/request'
+import { withRouteHandler } from '@/lib/core/utils/with-route-handler'
+import { docNotReadyResponse } from '@/lib/uploads/utils/servable-file-response'
+import { FileAccessDeniedError } from '@/app/api/files/authorization'
+import { sendSlackMessage } from '@/app/api/tools/slack/utils'
+
+export const dynamic = 'force-dynamic'
+
+const logger = createLogger('SlackSendMessageAPI')
+
+export const POST = withRouteHandler(async (request: NextRequest) => {
+  const requestId = generateRequestId()
+
+  try {
+    const authResult = await checkInternalAuth(request, { requireWorkflowId: false })
+
+    if (!authResult.success || !authResult.userId) {
+      logger.warn(`[${requestId}] Unauthorized Slack send attempt: ${authResult.error}`)
+      return NextResponse.json(
+        {
+          success: false,
+          error: authResult.error || 'Authentication required',
+        },
+        { status: 401 }
+      )
+    }
+
+    const userId = authResult.userId
+    logger.info(`[${requestId}] Authenticated Slack send request via ${authResult.authType}`, {
+      userId,
+    })
+
+    const parsed = await parseRequest(slackSendMessageContract, request, {})
+    if (!parsed.success) return parsed.response
+    const validatedData = parsed.data.body
+
+    const isDM = !!validatedData.userId
+    logger.info(`[${requestId}] Sending Slack message`, {
+      channel: validatedData.channel,
+      userId: validatedData.userId,
+      isDM,
+      hasFiles: !!(validatedData.files && validatedData.files.length > 0),
+      fileCount: validatedData.files?.length || 0,
+    })
+
+    const result = await sendSlackMessage(
+      {
+        accessToken: validatedData.accessToken,
+        channel: validatedData.channel ?? undefined,
+        userId: validatedData.userId ?? undefined,
+        ownerUserId: userId,
+        text: validatedData.text,
+        threadTs: validatedData.thread_ts ?? undefined,
+        blocks: validatedData.blocks ?? undefined,
+        files: validatedData.files ?? undefined,
+      },
+      requestId,
+      logger
+    )
+
+    if (!result.success) {
+      return NextResponse.json({ success: false, error: result.error }, { status: 400 })
+    }
+
+    return NextResponse.json({ success: true, output: result.output })
+  } catch (error) {
+    if (error instanceof FileAccessDeniedError) {
+      return NextResponse.json({ success: false, error: 'File not found' }, { status: 404 })
+    }
+    const notReady = docNotReadyResponse(error)
+    if (notReady) return notReady
+    logger.error(`[${requestId}] Error sending Slack message:`, error)
+    return NextResponse.json(
+      {
+        success: false,
+        error: getErrorMessage(error, 'Unknown error occurred'),
+      },
+      { status: 500 }
+    )
+  }
+})