medicine backend integrated

Author: hammadhttps

back_end/.env

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+PORT=5000
+DB_USER=sa
+DB_PASSWORD=hammad123
+DB_SERVER=DESKTOP-C0O50OH
+DB_DATABASE=Healvista

back_end/config/db.js

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+const sql = require('mssql');
+require('dotenv').config();
+
+const config = {
+  user: process.env.DB_USER,
+  password: process.env.DB_PASSWORD,
+  server: process.env.DB_SERVER, // e.g. 'DESKTOP-C0O50OH'
+  database: process.env.DB_DATABASE,
+  options: {
+    encrypt: false, // set to true if using Azure
+    trustServerCertificate: true
+  },
+  port: 1433  // ✅ explicitly define this if needed
+};
+
+sql.connect(config)
+  .then(() => console.log('✅ MSSQL Connected'))
+  .catch(err => console.error('❌ DB Connection Failed', err));
+
+module.exports = sql;

back_end/controller/pharmacyController.js

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+const sql = require('mssql');
+
+// Get all medicines
+const getAllMedicines = async (req, res) => {
+    try {
+        const request = new sql.Request();
+        const result = await request.query(`
+            SELECT 
+                medicine_id, 
+                medicine_name, 
+                stock_quantity, 
+                expiry_date 
+            FROM Pharmacy
+        `);
+        res.json(result.recordset);
+    } catch (err) {
+        console.error('Database error:', err);
+        res.status(500).json({ message: 'Error fetching medicines', error: err.message });
+    }
+};
+
+// Add new medicine
+const addMedicine = async (req, res) => {
+    const { medicine_name, stock_quantity, expiry_date } = req.body;
+    
+    try {
+        const request = new sql.Request();
+        request.input('medicine_name', sql.VarChar, medicine_name);
+        request.input('stock_quantity', sql.Int, stock_quantity);
+        request.input('expiry_date', sql.Date, new Date(expiry_date));
+        
+        await request.query(`
+            INSERT INTO Pharmacy (medicine_name, stock_quantity, expiry_date)
+            VALUES (@medicine_name, @stock_quantity, @expiry_date)
+        `);
+        
+        res.status(201).json({ message: 'Medicine added successfully' });
+    } catch (err) {
+        console.error('Database error:', err);
+        res.status(500).json({ message: 'Error adding medicine', error: err.message });
+    }
+};
+
+// Update medicine
+const updateMedicine = async (req, res) => {
+    const { id } = req.params;
+    const { medicine_name, stock_quantity, expiry_date } = req.body;
+    
+    try {
+        const request = new sql.Request();
+        request.input('id', sql.Int, id);
+        request.input('medicine_name', sql.VarChar, medicine_name);
+        request.input('stock_quantity', sql.Int, stock_quantity);
+        request.input('expiry_date', sql.Date, new Date(expiry_date));
+        
+        await request.query(`
+            UPDATE Pharmacy
+            SET medicine_name = @medicine_name,
+                stock_quantity = @stock_quantity,
+                expiry_date = @expiry_date
+            WHERE medicine_id = @id
+        `);
+        
+        res.json({ message: 'Medicine updated successfully' });
+    } catch (err) {
+        console.error('Database error:', err);
+        res.status(500).json({ message: 'Error updating medicine', error: err.message });
+    }
+};
+
+// Delete medicine
+const deleteMedicine = async (req, res) => {
+    const { id } = req.params;
+    try {
+        const request = new sql.Request();
+        request.input('id', sql.Int, id);
+        await request.query('DELETE FROM Pharmacy WHERE medicine_id = @id');
+        res.json({ message: 'Medicine deleted successfully' });
+    } catch (err) {
+        console.error('Database error:', err);
+        res.status(500).json({ message: 'Error deleting medicine', error: err.message });
+    }
+};
+
+module.exports = {
+    getAllMedicines,
+    addMedicine,
+    updateMedicine,
+    deleteMedicine
+};

back_end/routes/pharmacy_routes.js

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+const express = require('express');
+const {
+  getAllMedicines,
+  addMedicine,
+  updateMedicine,
+  deleteMedicine
+} = require('../controller/pharmacyController');
+
+const router = express.Router();
+
+router.get('/', getAllMedicines);         // GET all medicines
+router.post('/', addMedicine);           // ADD a new medicine
+router.put('/:id', updateMedicine);      // UPDATE a medicine
+router.delete('/:id', deleteMedicine);   // DELETE a medicine
+
+module.exports = router;

back_end/server.js

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+const express = require('express');
+const cors = require('cors');
+require('dotenv').config();
+require('./config/db'); // connect DB
+
+const app = express();
+
+app.use(cors());
+app.use(express.json());
+
+const pharmacyRoutes = require('./routes/pharmacy_routes');
+app.use('/api/pharmacy', pharmacyRoutes);
+
+app.get('/', (req, res) => {
+    res.send("🚀 Healvista Pharmacy Backend Running");
+});
+
+const PORT = process.env.PORT || 5000;
+app.listen(PORT, () => {
+    console.log(`🚀 Server started on http://localhost:${PORT}`);
+});