const fs = require('fs')
const path = require('path')

const rootDir = path.resolve(__dirname, '..')

const pkgPath = path.join(rootDir, 'package.json')
const androidGradlePath = path.join(rootDir, 'android', 'app', 'build.gradle')

const readJson = (file) => {
  const raw = fs.readFileSync(file, 'utf8')
  return JSON.parse(raw)
}

const calcVersionCode = (version) => {
  const [major = 0, minor = 0, patch = 0] = String(version)
    .split('.')
    .map((n) => Number.parseInt(n, 10) || 0)

  return major * 10000 + minor * 100 + patch
}

const syncAndroidGradle = (version) => {
  if (!fs.existsSync(androidGradlePath)) {
    console.warn('[version-sync] 未找到 android/app/build.gradle，跳过 Android 同步')
    return
  }

  const versionCode = calcVersionCode(version)
  let content = fs.readFileSync(androidGradlePath, 'utf8')

  content = content.replace(/versionCode\s+\d+/, `versionCode ${versionCode}`)
  content = content.replace(/versionName\s+"[^"]+"/, `versionName "${version}"`)

  fs.writeFileSync(androidGradlePath, content)
  console.log(
    `[version-sync] Android 已同步：versionName=${version}, versionCode=${versionCode}`,
  )
}

const main = () => {
  const pkg = readJson(pkgPath)
  const version = pkg.version
  if (!version) {
    throw new Error('package.json 中缺少 version 字段')
  }

  syncAndroidGradle(version)
}

main()