v4.6 -1 (#459)

projects/app/src/pages/api/common/file/read.ts

@@ -0,0 +1,43 @@
+import type { NextApiRequest, NextApiResponse } from 'next';
+import { jsonRes } from '@fastgpt/service/common/response';
+import { connectToDatabase } from '@/service/mongo';
+import { authFileToken } from '@fastgpt/service/support/permission/controller';
+import jschardet from 'jschardet';
+import { getDownloadBuf, getFileById } from '@fastgpt/service/common/file/gridfs/controller';
+
+export default async function handler(req: NextApiRequest, res: NextApiResponse<any>) {
+  try {
+    await connectToDatabase();
+
+    const { token } = req.query as { token: string };
+
+    const { fileId, teamId, tmbId, bucketName } = await authFileToken(token);
+
+    if (!fileId) {
+      throw new Error('fileId is empty');
+    }
+
+    const [file, buffer] = await Promise.all([
+      getFileById({ bucketName, fileId }),
+      getDownloadBuf({ bucketName, fileId })
+    ]);
+
+    const encoding = jschardet.detect(buffer)?.encoding;
+
+    res.setHeader('Content-Type', `${file.contentType}; charset=${encoding}`);
+    res.setHeader('Cache-Control', 'public, max-age=3600');
+    res.setHeader('Content-Disposition', `inline; filename="${encodeURIComponent(file.filename)}"`);
+
+    res.end(buffer);
+  } catch (error) {
+    jsonRes(res, {
+      code: 500,
+      error
+    });
+  }
+}
+export const config = {
+  api: {
+    responseLimit: '32mb'
+  }
+};