chore: import upstream snapshot with attribution

apps/sim/app/api/tools/dropbox/upload/route.ts

@@ -0,0 +1,129 @@
+import { createLogger } from '@sim/logger'
+import { getErrorMessage } from '@sim/utils/errors'
+import { type NextRequest, NextResponse } from 'next/server'
+import { dropboxUploadContract } from '@/lib/api/contracts/storage-transfer'
+import { parseRequest } from '@/lib/api/server'
+import { checkInternalAuth } from '@/lib/auth/hybrid'
+import { generateRequestId } from '@/lib/core/utils/request'
+import { httpHeaderSafeJson } from '@/lib/core/utils/validation'
+import { withRouteHandler } from '@/lib/core/utils/with-route-handler'
+import { processFilesToUserFiles, type RawFileInput } from '@/lib/uploads/utils/file-utils'
+import { downloadServableFileFromStorage } from '@/lib/uploads/utils/file-utils.server'
+import { docNotReadyResponse } from '@/lib/uploads/utils/servable-file-response'
+import { assertToolFileAccess } from '@/app/api/files/authorization'
+
+export const dynamic = 'force-dynamic'
+
+const logger = createLogger('DropboxUploadAPI')
+
+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 Dropbox upload attempt: ${authResult.error}`)
+      return NextResponse.json(
+        { success: false, error: authResult.error || 'Authentication required' },
+        { status: 401 }
+      )
+    }
+
+    logger.info(`[${requestId}] Authenticated Dropbox upload request via ${authResult.authType}`)
+
+    const parsed = await parseRequest(dropboxUploadContract, request, {})
+    if (!parsed.success) return parsed.response
+    const validatedData = parsed.data.body
+
+    let fileBuffer: Buffer
+    let fileName: string
+
+    // Prefer UserFile input, fall back to legacy base64 string
+    if (validatedData.file) {
+      // Process UserFile input
+      const userFiles = processFilesToUserFiles(
+        [validatedData.file as RawFileInput],
+        requestId,
+        logger
+      )
+
+      if (userFiles.length === 0) {
+        return NextResponse.json({ success: false, error: 'Invalid file input' }, { status: 400 })
+      }
+
+      const userFile = userFiles[0]
+      logger.info(`[${requestId}] Downloading file: ${userFile.name} (${userFile.size} bytes)`)
+
+      const denied = await assertToolFileAccess(userFile.key, authResult.userId, requestId, logger)
+      if (denied) return denied
+      try {
+        const result = await downloadServableFileFromStorage(userFile, requestId, logger)
+        fileBuffer = result.buffer
+      } catch (error) {
+        const notReady = docNotReadyResponse(error)
+        if (notReady) return notReady
+        return NextResponse.json(
+          { success: false, error: getErrorMessage(error, 'Failed to download file') },
+          { status: 500 }
+        )
+      }
+      fileName = userFile.name
+    } else if (validatedData.fileContent) {
+      // Legacy: base64 string input (backwards compatibility)
+      logger.info(`[${requestId}] Using legacy base64 content input`)
+      fileBuffer = Buffer.from(validatedData.fileContent, 'base64')
+      fileName = validatedData.fileName || 'file'
+    } else {
+      return NextResponse.json({ success: false, error: 'File is required' }, { status: 400 })
+    }
+
+    // Determine final path
+    let finalPath = validatedData.path
+    if (finalPath.endsWith('/')) {
+      finalPath = `${finalPath}${fileName}`
+    }
+
+    logger.info(`[${requestId}] Uploading to Dropbox: ${finalPath} (${fileBuffer.length} bytes)`)
+
+    const dropboxApiArg = {
+      path: finalPath,
+      mode: validatedData.mode || 'add',
+      autorename: validatedData.autorename ?? false,
+      mute: validatedData.mute ?? false,
+    }
+
+    const response = await fetch('https://content.dropboxapi.com/2/files/upload', {
+      method: 'POST',
+      headers: {
+        Authorization: `Bearer ${validatedData.accessToken}`,
+        'Content-Type': 'application/octet-stream',
+        'Dropbox-API-Arg': httpHeaderSafeJson(dropboxApiArg),
+      },
+      body: new Uint8Array(fileBuffer),
+    })
+
+    const data = await response.json()
+
+    if (!response.ok) {
+      const errorMessage = data.error_summary || data.error?.message || 'Failed to upload file'
+      logger.error(`[${requestId}] Dropbox API error:`, { status: response.status, data })
+      return NextResponse.json({ success: false, error: errorMessage }, { status: response.status })
+    }
+
+    logger.info(`[${requestId}] File uploaded successfully to ${data.path_display}`)
+
+    return NextResponse.json({
+      success: true,
+      output: {
+        file: data,
+      },
+    })
+  } catch (error) {
+    logger.error(`[${requestId}] Unexpected error:`, error)
+    return NextResponse.json(
+      { success: false, error: getErrorMessage(error, 'Unknown error') },
+      { status: 500 }
+    )
+  }
+})