/**
 * 数据库字段扩展脚本
 * 将 TEXT 改为 LONGTEXT 以支持大图片
 */
require('dotenv').config();
const mysql = require('mysql2/promise');

const config = {
  host: process.env.DB_HOST,
  port: process.env.DB_PORT || 3306,
  user: process.env.DB_USER || 'root',
  password: process.env.DB_PASSWORD || '',
  database: process.env.DB_NAME || 'jnote'
};

async function migrate() {
  let connection;

  try {
    console.log('🔌 正在连接数据库...');
    connection = await mysql.createConnection(config);
    console.log('✅ 数据库连接成功');

    console.log('📝 正在修改 settings 表字段...');

    await connection.query('ALTER TABLE settings MODIFY COLUMN bg_image LONGTEXT');
    console.log('✅ bg_image 改为 LONGTEXT');

    await connection.query('ALTER TABLE settings MODIFY COLUMN favicon LONGTEXT');
    console.log('✅ favicon 改为 LONGTEXT');

    await connection.query('ALTER TABLE settings MODIFY COLUMN uploaded_images LONGTEXT');
    console.log('✅ uploaded_images 改为 LONGTEXT');

    await connection.query('ALTER TABLE settings MODIFY COLUMN uploaded_icons LONGTEXT');
    console.log('✅ uploaded_icons 改为 LONGTEXT');

    console.log('\n🎉 字段扩展完成！');
  } catch (error) {
    console.error('❌ 扩展失败:', error.message);
    process.exit(1);
  } finally {
    if (connection) {
      await connection.end();
    }
  }
}

migrate();