/**
 * 将「当前选用的静态基址」写入 pages.json、index.html。
 * - 目标基址：`STATIC_ASSETS_BASE_URL` 环境变量，否则取 `static-assets-defaults.js` 中 **STATIC_ASSETS_BASE_URL_TEST**。
 * - 若文件中仍是更旧的 CDN 前缀，可一次性指定 `PREV_STATIC_ASSETS_BASE_URL`（要整段替换掉的前缀，须以 / 结尾），例如：
 *   `PREV_STATIC_ASSETS_BASE_URL=https://old-host/sqxp-static/ npm run sync-static-public-urls`
 *   不设则仅把「与目标相同」视为已就绪，不做无意义的替换。
 *
 * 生产发版：先设 `STATIC_ASSETS_BASE_URL` 为生产根地址再执行。
 * 用法：在 sqxp-wx 根目录执行 `npm run sync-static-public-urls`
 */
import fs from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'

const __dirname = path.dirname(fileURLToPath(import.meta.url))
const root = path.resolve(__dirname, '..')
const defaultsPath = path.join(root, 'config/static-assets-defaults.js')
const raw = fs.readFileSync(defaultsPath, 'utf8')
const pick = (name) => {
  const m = raw.match(new RegExp(`export const ${name}\\s*=\\s*['"]([^'"]+)['"]`))
  return m?.[1]?.trim() || ''
}
const testBase = pick('STATIC_ASSETS_BASE_URL_TEST') || pick('STATIC_ASSETS_BASE_URL_DEFAULT')
const fromFile = testBase || process.env.VITE_STATIC_ASSETS_BASE_URL || 'https://REPLACE_TEST_STATIC_HOST/shanxia-static/'
const normalized = (() => {
  const b = (process.env.STATIC_ASSETS_BASE_URL || fromFile).trim()
  return b.endsWith('/') ? b : `${b}/`
})()

const prevRaw = process.env.PREV_STATIC_ASSETS_BASE_URL?.trim()
const prev = prevRaw
  ? prevRaw.endsWith('/') ? prevRaw : `${prevRaw}/`
  : normalized

for (const rel of ['pages.json', 'index.html']) {
  const p = path.join(root, rel)
  if (!fs.existsSync(p)) continue
  let s = fs.readFileSync(p, 'utf8')
  if (prev !== normalized) {
    s = s.split(prev).join(normalized)
  }
  fs.writeFileSync(p, s)
}

if (prev === normalized) {
  console.log('Static base:', normalized, '(未设置 PREV_STATIC_ASSETS_BASE_URL，未执行旧前缀替换)')
} else {
  console.log('Static base set to:', normalized, '(replaced prefix:', prev + ')')
}