From 6f340990e97656d49274b0492d15cbd630a4dfad Mon Sep 17 00:00:00 2001
From: Vishnu <vishnu10kumar11@gmail.com>
Date: Wed, 21 May 2025 19:12:07 +0530
Subject: [PATCH] setup1

---
 apps/Backend/package.json                 |  5 ++++
 apps/Backend/src/routes/index.ts          |  2 ++
 apps/Backend/src/routes/pdfExtraction.ts  | 23 +++++++++++++++++
 apps/Backend/src/services/pythonClient.ts | 30 +++++++++++++++++++++++
 4 files changed, 60 insertions(+)
 create mode 100644 apps/Backend/src/routes/pdfExtraction.ts
 create mode 100644 apps/Backend/src/services/pythonClient.ts

diff --git a/apps/Backend/package.json b/apps/Backend/package.json
index 5f89e61..94ee1f2 100644
--- a/apps/Backend/package.json
+++ b/apps/Backend/package.json
@@ -13,12 +13,15 @@
   "license": "ISC",
   "type": "commonjs",
   "dependencies": {
+    "axios": "^1.9.0",
     "bcrypt": "^5.1.1",
     "cors": "^2.8.5",
     "dotenv": "^16.0.3",
     "express": "^4.21.2",
     "express-session": "^1.18.1",
+    "form-data": "^4.0.2",
     "jsonwebtoken": "^9.0.2",
+    "multer": "^2.0.0",
     "passport": "^0.7.0",
     "passport-local": "^1.0.0",
     "ws": "^8.18.0",
@@ -30,7 +33,9 @@
     "@types/cors": "^2.8.18",
     "@types/express": "^5.0.1",
     "@types/express-session": "^1.18.0",
+    "@types/form-data": "^2.2.1",
     "@types/jsonwebtoken": "^9.0.9",
+    "@types/multer": "^1.4.12",
     "@types/node": "20.16.11",
     "@types/passport": "^1.0.16",
     "@types/passport-local": "^1.0.38",
diff --git a/apps/Backend/src/routes/index.ts b/apps/Backend/src/routes/index.ts
index f306927..f322ce1 100644
--- a/apps/Backend/src/routes/index.ts
+++ b/apps/Backend/src/routes/index.ts
@@ -3,6 +3,7 @@ import patientRoutes from './patients';
 import appointmentRoutes from './appointements'
 import userRoutes from './users'
 import staffRoutes from './staffs'
+import pdfExtractionRoutes from './pdfExtraction';
 
 const router = Router();
 
@@ -10,5 +11,6 @@ router.use('/patients', patientRoutes);
 router.use('/appointments', appointmentRoutes);
 router.use('/users', userRoutes);
 router.use('/staffs', staffRoutes);
+router.use('/pdfExtraction/', pdfExtractionRoutes);
 
 export default router;
\ No newline at end of file
diff --git a/apps/Backend/src/routes/pdfExtraction.ts b/apps/Backend/src/routes/pdfExtraction.ts
new file mode 100644
index 0000000..1173f81
--- /dev/null
+++ b/apps/Backend/src/routes/pdfExtraction.ts
@@ -0,0 +1,23 @@
+import { Router } from "express";
+import type { Request, Response } from "express";
+const router = Router();
+import  multer from "multer";
+import forwardToPythonService from "../services/pythonClient";
+
+const upload = multer({ storage: multer.memoryStorage() });
+
+router.post("/extract", upload.single("pdf"), async (req: Request, res: Response): Promise<any>=> {
+  if (!req.file) {
+    return res.status(400).json({ error: "No PDF file uploaded." });
+  }
+
+  try {
+    const result = await forwardToPythonService(req.file);
+    res.json(result);
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: "Extraction failed" });
+  }
+});
+
+export default router;
diff --git a/apps/Backend/src/services/pythonClient.ts b/apps/Backend/src/services/pythonClient.ts
new file mode 100644
index 0000000..5e279ef
--- /dev/null
+++ b/apps/Backend/src/services/pythonClient.ts
@@ -0,0 +1,30 @@
+import axios from "axios";
+import FormData from "form-data";
+import { Express } from "express";
+
+export interface ExtractedData {
+  name?: string;
+  memberId?: string;
+  dob?: string;
+  [key: string]: any; // In case your extraction returns additional dynamic fields
+}
+
+export default async function forwardToPythonService(
+  file: Express.Multer.File
+): Promise<ExtractedData> {
+  const form = new FormData();
+  form.append("pdf", file.buffer, {
+    filename: file.originalname,
+    contentType: file.mimetype,
+  });
+
+  const response = await axios.post<ExtractedData>(
+    "http://localhost:5001/extract",
+    form,
+    {
+      headers: form.getHeaders(),
+    }
+  );
+
+  return response.data;
+}