adding express routing to backend (#52)

server/src/app.ts

@@ -3,6 +3,7 @@ import cors, { CorsOptions } from 'cors';
 import path from 'path';
 import fs from 'fs';
 import cameraRouter from './routes/cameraRoutes';
+import gptRouter from './routes/gptRoutes';
 
 // define directory to save images
 const uploadDir = path.join(__dirname, '../__uploads');
@@ -22,6 +23,7 @@ app.use(express.json());
 
 // routes
 app.use('/camera', cameraRouter);
+app.use('/gpt', gptRouter);
 
 app.get('/', (req, res) => {
   res.sendFile(path.join(__dirname, 'index.html'));

server/src/controllers/gptController.ts

@@ -0,0 +1,25 @@
+import { Request, Response } from 'express';
+import { GptService } from '../services/gptService';
+
+export const GptController = {
+  async ask(req: Request, res: Response) {
+    try {
+      if (!req.body) {
+        return res.status(400).json({ success: false, message: 'Empty body' });
+      }
+
+      let gptService = new GptService();
+      let data = gptService.doSomething();
+
+      res.status(200).json({ success: true, message: 'Reached the backend successfully', data });
+    } catch (err) {
+      if (err instanceof Error) {
+        res.status(500).json({ success: false, message: 'Failed to ask gpt', error: err.message });
+      } else {
+        res
+          .status(500)
+          .json({ success: false, message: 'Failed to ask gpt', error: 'Unknown error' });
+      }
+    }
+  },
+};

server/src/routes/gptRoutes.ts

@@ -0,0 +1,8 @@
+import express from 'express';
+import { GptController } from '../controllers/gptController';
+
+const router = express.Router();
+
+router.post('/ask', GptController.ask);
+
+export default router;

server/src/services/gptService.ts

@@ -0,0 +1,6 @@
+export class GptService {
+  doSomething = () => {
+    console.log('inside the gpt service');
+    return "called gpt"
+  };
+}