/**
 * {}
 * @author yutent<yutent.io@gmail.com>
 * @date 2023/06/14 18:36:15
 */

import { join, dirname, parse, normalize } from 'node:path'
import fs from 'iofs'
import Es from 'esbuild'
import { compileScss, parseJs, compileVue, parseHtml } from './compile-vue.js'

const template = fs.cat(join(process.cwd(), 'index.html')).toString()

export async function compileFiles(
  currentPage,
  page,
  files,
  options,
  { verbose, imports, dist } = {}
) {
  let pageDir = options.IS_MPA && currentPage ? `pages/${currentPage}` : ''
  options.currentPage = currentPage

  for (let [path, it] of files) {
    // 入口文件, 特殊处理
    if (page && path === page.entry) {
      let entry = fs.cat(page.entry).toString()

      entry = parseJs(entry, imports, { ...options, IS_ENTRY: true })

      let code = parseHtml(template, {
        page,
        imports,
        entry,
        LEGACY_MODE: options.LEGACY_MODE
      })

      fs.echo(code, join(dist, `${currentPage}.html`))
      continue
    }

    verbose && console.log('  解析 %s ...', it.name)

    switch (it.ext) {
      case '.vue':
        {
          let code = await compileVue(path, imports, options)

          await Es.transform(code, { minify: true }).then(r => {
            fs.echo(
              r.code,
              join(dist, 'assets/', pageDir, it.name.replace(/\.vue$/, '.js'))
            )
          })
        }
        break

      case '.js':
        {
          let code = fs.cat(path)

          code = parseJs(code + '', imports, options)

          await Es.transform(code, { minify: true }).then(async ({ code }) => {
            for (let fn of options.plugin) {
              code = await fn('js', code)
            }
            fs.echo(code, join(dist, 'assets/', pageDir, it.name))
          })
        }
        break
      // es2024之后esm的语法的assets 变成了with, 对构建工具来说无法适配到具体的浏览器
      // 故把json文件改成js文件
      case '.json':
        {
          let code = fs.cat(path)

          code = 'export default ' + JSON.stringify(JSON.parse(code + ''))

          fs.echo(code, join(dist, 'assets/', pageDir, it.name + '.js'))
        }
        break

      case '.scss':
      case '.css':
        {
          let target = join(
            dist,
            'assets/',
            pageDir,
            it.name.replace(/\.scss$/, '.css')
          )
          if (it.ext === '.css') {
            fs.cp(path, target)
          } else {
            let code = compileScss(path)
            for (let fn of options.plugin) {
              code = await fn('css', code)
            }
            fs.echo(code, target)
          }
        }
        break

      default:
        fs.cp(path, join(dist, 'assets/', pageDir, it.name))
        break
    }
  }
}