// 执行 schema.sql 到远程数据库
// 用法：node run_schema.js

const mysql = require('mysql2/promise')
const fs = require('fs')
const path = require('path')
require('dotenv').config({ path: path.join(__dirname, '.env') })

const CONFIG = {
  host: '110.42.255.239',
  port: 3306,
  user: 'root',
  password: 'Wentian9588.',
  database: 'miniprogram',
  multipleStatements: true,
  charset: 'utf8mb4'
}

const SCHEMA_PATH = path.join(__dirname, 'config', 'schema.sql')

function splitSql(sql) {
  // 去掉 -- 注释行
  const lines = sql.split('\n').map(l => l.replace(/--.*$/, '')).join('\n')
  // 按 ; 切分（保留完整语句）
  const stmts = []
  let buf = ''
  let inString = false
  let stringChar = ''
  for (let i = 0; i < lines.length; i++) {
    const ch = lines[i]
    if (inString) {
      buf += ch
      if (ch === stringChar && lines[i - 1] !== '\\') {
        inString = false
      }
      continue
    }
    if (ch === "'" || ch === '"') {
      inString = true
      stringChar = ch
      buf += ch
      continue
    }
    if (ch === ';') {
      const s = buf.trim()
      if (s) stmts.push(s)
      buf = ''
      continue
    }
    buf += ch
  }
  const tail = buf.trim()
  if (tail) stmts.push(tail)
  return stmts
}

async function main() {
  const sql = fs.readFileSync(SCHEMA_PATH, 'utf8')
  const statements = splitSql(sql)
  console.log(`解析到 ${statements.length} 条语句`)

  const connection = await mysql.createConnection(CONFIG)
  console.log(`已连接 ${CONFIG.host}:${CONFIG.port}/${CONFIG.database}`)

  let ok = 0
  let fail = 0
  for (let i = 0; i < statements.length; i++) {
    const stmt = statements[i]
    const preview = stmt.replace(/\s+/g, ' ').slice(0, 80)
    try {
      await connection.query(stmt)
      ok++
      console.log(`[${i + 1}/${statements.length}] OK  ${preview}`)
    } catch (err) {
      fail++
      console.error(`[${i + 1}/${statements.length}] FAIL ${preview}`)
      console.error(`   ${err.code || ''} ${err.sqlMessage || err.message}`)
    }
  }

  console.log(`\n完成 ✅ 成功 ${ok} / 失败 ${fail}`)
  await connection.end()
}

main().catch(err => {
  console.error('连接失败:', err.message)
  process.exit(1)
})