add changes

backend/test-db-connection.js

@@ -0,0 +1,60 @@
+require('dotenv').config();
+const db = require('./models');
+
+async function testDatabaseConnection() {
+  console.log('\n🔍 Testing Database Connection...\n');
+  
+  console.log('Configuration:');
+  console.log('- Host:', process.env.DB_HOST);
+  console.log('- Port:', process.env.DB_PORT);
+  console.log('- Database:', process.env.DB_NAME);
+  console.log('- User:', process.env.DB_USER);
+  console.log('- Dialect:', process.env.DB_DIALECT);
+  console.log('\n');
+
+  try {
+    // Test connection
+    await db.sequelize.authenticate();
+    console.log('✅ Connection has been established successfully.\n');
+
+    // Get database version
+    const [results] = await db.sequelize.query('SELECT VERSION() as version');
+    console.log('📊 MySQL Version:', results[0].version);
+
+    // Check if database exists
+    const [databases] = await db.sequelize.query('SHOW DATABASES');
+    const dbExists = databases.some(d => d.Database === process.env.DB_NAME);
+    
+    if (dbExists) {
+      console.log(`✅ Database '${process.env.DB_NAME}' exists.\n`);
+      
+      // Show tables in database
+      const [tables] = await db.sequelize.query(`SHOW TABLES FROM ${process.env.DB_NAME}`);
+      console.log(`📋 Tables in '${process.env.DB_NAME}':`, tables.length > 0 ? tables.length : 'No tables yet');
+      if (tables.length > 0) {
+        tables.forEach(table => {
+          const tableName = table[`Tables_in_${process.env.DB_NAME}`];
+          console.log(`   - ${tableName}`);
+        });
+      }
+    } else {
+      console.log(`⚠️  Database '${process.env.DB_NAME}' does not exist.`);
+      console.log(`\nTo create it, run:`);
+      console.log(`mysql -u ${process.env.DB_USER} -p -e "CREATE DATABASE ${process.env.DB_NAME} CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"`);
+    }
+
+    console.log('\n✅ Database connection test completed successfully!\n');
+    process.exit(0);
+  } catch (error) {
+    console.error('\n❌ Database connection test failed:');
+    console.error('Error:', error.message);
+    console.error('\nPlease ensure:');
+    console.error('1. MySQL server is running');
+    console.error('2. Database credentials in .env are correct');
+    console.error('3. Database exists (or create it with the command above)');
+    console.error('4. User has proper permissions\n');
+    process.exit(1);
+  }
+}
+
+testDatabaseConnection();