feat: implement backend authentication with JWT and bcrypt

- Installed jsonwebtoken and bcryptjs dependencies
- Created /api/auth/login endpoint in server.js for credential validation and token generation
- Added setup-db.js script to dynamically initialize admin_users table with default account

.env.example

@@ -0,0 +1,8 @@
+PORT=3000
+DB_HOST=127.0.0.1
+DB_USER=root
+DB_PASSWORD=your_mysql_password
+DB_NAME=tamil_culture_waterloo
+
+# Optional: set this if your MySQL server runs on a different port or remote host.
+# DB_PORT=3306

package-lock.json

@@ -9,9 +9,11 @@
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
+        "bcryptjs": "^3.0.3",
         "cors": "^2.8.5",
         "dotenv": "^16.3.1",
         "express": "^4.18.2",
+        "jsonwebtoken": "^9.0.3",
         "multer": "^1.4.5-lts.1",
         "mysql2": "^3.6.0"
       },
@@ -68,6 +70,15 @@
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
       "dev": true
     },
+    "node_modules/bcryptjs": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/bcryptjs/-/bcryptjs-3.0.3.tgz",
+      "integrity": "sha512-GlF5wPWnSa/X5LKM1o0wz0suXIINz1iHRLvTS+sLyi7XPbe5ycmYI3DlZqVGZZtDgl4DmasFg7gOB3JYbphV5g==",
+      "license": "BSD-3-Clause",
+      "bin": {
+        "bcrypt": "bin/bcrypt"
+      }
+    },
     "node_modules/binary-extensions": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
@@ -125,6 +136,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/buffer-equal-constant-time": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
+      "integrity": "sha512-zRpUiDwd/xk6ADqPMATG8vc9VPrkck7T07OIx0gnjmJAnHnTVXNQG3vfvWNuiZIkwu9KrKdA1iJKfsfTVxE6NA==",
+      "license": "BSD-3-Clause"
+    },
     "node_modules/buffer-from": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
@@ -326,6 +343,15 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/ecdsa-sig-formatter": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+      "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "node_modules/ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -685,6 +711,97 @@
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       "integrity": "sha512-VLghIWNM6ELQzo7zwmcg0NmTVyWKYjvIeM83yjp0wRDTmUnrM678fQbcKBo6n2CJEF0szoG//ytg+TKla89ALQ=="
     },
+    "node_modules/jsonwebtoken": {
+      "version": "9.0.3",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-9.0.3.tgz",
+      "integrity": "sha512-MT/xP0CrubFRNLNKvxJ2BYfy53Zkm++5bX9dtuPbqAeQpTVe0MQTFhao8+Cp//EmJp244xt6Drw/GVEGCUj40g==",
+      "license": "MIT",
+      "dependencies": {
+        "jws": "^4.0.1",
+        "lodash.includes": "^4.3.0",
+        "lodash.isboolean": "^3.0.3",
+        "lodash.isinteger": "^4.0.4",
+        "lodash.isnumber": "^3.0.3",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.isstring": "^4.0.1",
+        "lodash.once": "^4.0.0",
+        "ms": "^2.1.1",
+        "semver": "^7.5.4"
+      },
+      "engines": {
+        "node": ">=12",
+        "npm": ">=6"
+      }
+    },
+    "node_modules/jsonwebtoken/node_modules/ms": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
+      "license": "MIT"
+    },
+    "node_modules/jwa": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/jwa/-/jwa-2.0.1.tgz",
+      "integrity": "sha512-hRF04fqJIP8Abbkq5NKGN0Bbr3JxlQ+qhZufXVr0DvujKy93ZCbXZMHDL4EOtodSbCWxOqR8MS1tXA5hwqCXDg==",
+      "license": "MIT",
+      "dependencies": {
+        "buffer-equal-constant-time": "^1.0.1",
+        "ecdsa-sig-formatter": "1.0.11",
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "node_modules/jws": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/jws/-/jws-4.0.1.tgz",
+      "integrity": "sha512-EKI/M/yqPncGUUh44xz0PxSidXFr/+r0pA70+gIYhjv+et7yxM+s29Y+VGDkovRofQem0fs7Uvf4+YmAdyRduA==",
+      "license": "MIT",
+      "dependencies": {
+        "jwa": "^2.0.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "node_modules/lodash.includes": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
+      "integrity": "sha512-W3Bx6mdkRTGtlJISOvVD/lbqjTlPPUDTMnlXZFnVwi9NKJ6tiAk6LVdlhZMm17VZisqhKcgzpO5Wz91PCt5b0w==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isboolean": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
+      "integrity": "sha512-Bz5mupy2SVbPHURB98VAcw+aHh4vRV5IPNhILUCsOzRmsTmSQ17jIuqopAentWoehktxGd9e/hbIXq980/1QJg==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isinteger": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
+      "integrity": "sha512-DBwtEWN2caHQ9/imiNeEA5ys1JoRtRfY3d7V9wkqtbycnAmTvRRmbHKDV4a0EYc678/dia0jrte4tjYwVBaZUA==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isnumber": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz",
+      "integrity": "sha512-QYqzpfwO3/CWf3XP+Z+tkQsfaLL/EnUlXWVkIk5FUPc4sBdTehEqZONuyRt2P67PXAk+NXmTBcc97zw9t1FQrw==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isplainobject": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
+      "integrity": "sha512-oSXzaWypCMHkPC3NvBEaPHf0KsA5mvPrOPgQWDsbg8n7orZ290M0BmC/jgRZ4vcJ6DTAhjrsSYgdsW/F+MFOBA==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isstring": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
+      "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.once": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
+      "integrity": "sha512-Sb487aTOCr9drQVL8pIxOzVhafOjZN9UU54hiN8PU3uAiSV7lx1yYNpbNmex2PK6dSJoNTSJUUswT651yww3Mg==",
+      "license": "MIT"
+    },
     "node_modules/long": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",
@@ -1110,7 +1227,6 @@
       "version": "7.7.2",
       "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.2.tgz",
       "integrity": "sha512-RF0Fw+rO5AMf9MAyaRXI4AV0Ulj5lMHqVxxdSgiVbixSCXoEmmX/jk0CuJw4+3SqroYO9VoUh+HcuJivvtJemA==",
-      "dev": true,
       "bin": {
         "semver": "bin/semver.js"
       },

package.json

@@ -19,13 +19,15 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "express": "^4.18.2",
+    "bcryptjs": "^3.0.3",
-    "mysql2": "^3.6.0",
+    "cors": "^2.8.5",
-    "multer": "^1.4.5-lts.1",
     "dotenv": "^16.3.1",
-    "cors": "^2.8.5"
+    "express": "^4.18.2",
+    "jsonwebtoken": "^9.0.3",
+    "multer": "^1.4.5-lts.1",
+    "mysql2": "^3.6.0"
   },
   "devDependencies": {
     "nodemon": "^3.0.1"
   }
-}
+}

server.js

@@ -5,6 +5,10 @@ const path = require('path');
 const fs = require('fs');
 require('dotenv').config();
 
+const bcrypt = require('bcryptjs');
+const jwt = require('jsonwebtoken');
+const JWT_SECRET = process.env.JWT_SECRET || 'supersecret_default_key_change_me_in_production';
+
 const app = express();
 const PORT = process.env.PORT || 3000;
 
@@ -111,6 +115,46 @@ const upload = multer({
     }
 });
 
+// ===============================
+// ===============================
+// AUTHENTICATION ROUTES
+// ===============================
+
+// POST login
+app.post('/api/auth/login', async (req, res) => {
+    try {
+        const { email, password } = req.body;
+        if (!email || !password) {
+            return res.status(400).json({ success: false, message: 'Email and password are required' });
+        }
+
+        const [rows] = await pool.execute('SELECT * FROM admin_users WHERE email = ?', [email]);
+        if (rows.length === 0) {
+            return res.status(401).json({ success: false, message: 'Invalid credentials' });
+        }
+
+        const user = rows[0];
+        const isMatch = await bcrypt.compare(password, user.password_hash);
+        if (!isMatch) {
+            return res.status(401).json({ success: false, message: 'Invalid credentials' });
+        }
+
+        const token = jwt.sign({ id: user.id, email: user.email, role: user.role }, JWT_SECRET, { expiresIn: '1d' });
+
+        res.json({
+            success: true,
+            message: 'Login successful',
+            data: {
+                token,
+                user: { id: user.id, email: user.email, role: user.role }
+            }
+        });
+    } catch (error) {
+        console.error('Login error:', error);
+        res.status(500).json({ success: false, message: 'Server error during login' });
+    }
+});
+
 // ===============================
 // HEALTH CHECK & STATUS ROUTES
 // ===============================

setup-db.js

@@ -0,0 +1,51 @@
+const mysql = require('mysql2/promise');
+const bcrypt = require('bcryptjs');
+require('dotenv').config();
+
+async function setup() {
+    try {
+        const pool = mysql.createPool({
+            host: process.env.DB_HOST,
+            user: process.env.DB_USER,
+            password: process.env.DB_PASSWORD,
+            database: process.env.DB_NAME,
+        });
+
+        console.log('Connected to MySQL...');
+
+        // Create table
+        await pool.execute(`
+            CREATE TABLE IF NOT EXISTS admin_users (
+                id INT AUTO_INCREMENT PRIMARY KEY,
+                email VARCHAR(255) NOT NULL UNIQUE,
+                password_hash VARCHAR(255) NOT NULL,
+                role VARCHAR(50) DEFAULT 'admin',
+                created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+            )
+        `);
+        console.log('Verified admin_users table exists.');
+
+        // Check if admin user exists
+        const [rows] = await pool.execute('SELECT * FROM admin_users WHERE email = ?', ['admin@example.com']);
+        
+        if (rows.length === 0) {
+            const passwordStr = 'adminpassword';
+            const hash = await bcrypt.hash(passwordStr, 10);
+            
+            await pool.execute('INSERT INTO admin_users (email, password_hash, role) VALUES (?, ?, ?)', [
+                'admin@example.com', hash, 'admin'
+            ]);
+            console.log('Default admin user created: admin@example.com / adminpassword');
+        } else {
+            console.log('Default admin user already exists.');
+        }
+
+        console.log('Database setup complete.');
+        process.exit(0);
+    } catch (err) {
+        console.error('Setup failed:', err);
+        process.exit(1);
+    }
+}
+
+setup();