chore: import upstream snapshot with attribution

apps/sim/app/api/files/delete/route.ts

@@ -0,0 +1,125 @@
+import { createLogger } from '@sim/logger'
+import type { NextRequest } from 'next/server'
+import { NextResponse } from 'next/server'
+import { fileDeleteContract } from '@/lib/api/contracts/storage-transfer'
+import { getValidationErrorMessage, parseRequest } from '@/lib/api/server'
+import { checkSessionOrInternalAuth } from '@/lib/auth/hybrid'
+import { withRouteHandler } from '@/lib/core/utils/with-route-handler'
+import type { StorageContext } from '@/lib/uploads/config'
+import { deleteFile, hasCloudStorage } from '@/lib/uploads/core/storage-service'
+import { deleteFileMetadata } from '@/lib/uploads/server/metadata'
+import { extractStorageKey, inferContextFromKey } from '@/lib/uploads/utils/file-utils'
+import { verifyFileAccess, verifyKBFileWriteAccess } from '@/app/api/files/authorization'
+import {
+  createErrorResponse,
+  createSuccessResponse,
+  extractFilename,
+  FileNotFoundError,
+  InvalidRequestError,
+} from '@/app/api/files/utils'
+
+export const dynamic = 'force-dynamic'
+
+const logger = createLogger('FilesDeleteAPI')
+
+/**
+ * Main API route handler for file deletion
+ */
+export const POST = withRouteHandler(async (request: NextRequest) => {
+  try {
+    const authResult = await checkSessionOrInternalAuth(request, { requireWorkflowId: false })
+
+    if (!authResult.success || !authResult.userId) {
+      logger.warn('Unauthorized file delete request', {
+        error: authResult.error || 'Missing userId',
+      })
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+    }
+
+    const userId = authResult.userId
+
+    const parsed = await parseRequest(
+      fileDeleteContract,
+      request,
+      {},
+      {
+        validationErrorResponse: (error) =>
+          createErrorResponse(
+            new InvalidRequestError(getValidationErrorMessage(error, 'Invalid request data'))
+          ),
+      }
+    )
+    if (!parsed.success) return parsed.response
+
+    const { filePath, context } = parsed.data.body
+
+    logger.info('File delete request received:', { filePath, context, userId })
+
+    if (!filePath) {
+      throw new InvalidRequestError('No file path provided')
+    }
+
+    try {
+      const key = extractStorageKeyFromPath(filePath)
+
+      // Derive context from the trusted key prefix, never the client-supplied value; a supplied context must agree with the key.
+      const storageContext: StorageContext = inferContextFromKey(key)
+      if (context && context !== storageContext) {
+        logger.warn('File delete context mismatch', { key, context, inferred: storageContext })
+        throw new InvalidRequestError(`Provided context "${context}" does not match the file key`)
+      }
+
+      // Deletes require write/admin on the owning workspace; KB deletes are binding-only with no read fallback.
+      const hasAccess =
+        storageContext === 'knowledge-base'
+          ? await verifyKBFileWriteAccess(key, userId)
+          : await verifyFileAccess(key, userId, undefined, storageContext, !hasCloudStorage(), {
+              requireWrite: true,
+            })
+
+      if (!hasAccess) {
+        logger.warn('Unauthorized file delete attempt', { userId, key, context: storageContext })
+        throw new FileNotFoundError(`File not found: ${key}`)
+      }
+
+      logger.info(`Deleting file with key: ${key}, context: ${storageContext}`)
+
+      await deleteFile({
+        key,
+        context: storageContext,
+      })
+      await deleteFileMetadata(key)
+
+      logger.info(`File successfully deleted: ${key}`)
+
+      return createSuccessResponse({
+        success: true,
+        message: 'File deleted successfully',
+      })
+    } catch (error) {
+      logger.error('Error deleting file:', error)
+
+      if (error instanceof FileNotFoundError) {
+        return createErrorResponse(error)
+      }
+
+      return createErrorResponse(
+        error instanceof Error ? error : new Error('Failed to delete file')
+      )
+    }
+  } catch (error) {
+    logger.error('Error parsing request:', error)
+    return createErrorResponse(error instanceof Error ? error : new Error('Invalid request'))
+  }
+})
+
+/**
+ * Extract storage key from file path
+ */
+function extractStorageKeyFromPath(filePath: string): string {
+  if (filePath.startsWith('/api/files/serve/')) {
+    return extractStorageKey(filePath)
+  }
+
+  return extractFilename(filePath)
+}