const mysql = require('mysql2/promise');
(async () => {
  // 🔴 口令不再内置明文（2026-09-23 入库口令处置 P2）。运行前请注入 DB_PASSWORD：
  //   DB_PASSWORD='<本机 DB 口令>' node add_wx_link.js
  const c = await mysql.createConnection({
    host: process.env.DB_HOST || 'localhost',
    user: process.env.DB_USER || 'root',
    password: process.env.DB_PASSWORD,
    database: process.env.DB_NAME || 'competition_db',
  });
  try {
    await c.query("ALTER TABLE news ADD COLUMN wx_link VARCHAR(500) NULL DEFAULT NULL COMMENT '微信公众号文章链接' AFTER content");
    console.log('Added wx_link column');
  } catch (e) {
    if (e.code === 'ER_DUP_FIELDNAME') console.log('wx_link already exists');
    else throw e;
  }
  try {
    await c.query("ALTER TABLE news ADD COLUMN news_type VARCHAR(20) NOT NULL DEFAULT 'content' COMMENT '新闻类型' AFTER wx_link");
    console.log('Added news_type column');
  } catch (e) {
    if (e.code === 'ER_DUP_FIELDNAME') console.log('news_type already exists');
    else throw e;
  }
  const [cols] = await c.query('SHOW COLUMNS FROM news');
  cols.forEach(x => console.log(x.Field, x.Type, x.Null));
  await c.end();
})();