import { mkdtemp, readFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { build, createServer, loadConfigFromFile } from 'vite'
import Components from 'unplugin-vue-components/vite'
import AutoImport from 'unplugin-auto-import/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'

// 与生产配置相同的构建，关闭声明文件生成，避免覆盖工作区已有的用户修改。
const protectedPaths = [
  'src/types/components.d.ts',
  'src/types/auto-imports.d.ts',
  '.auto-import.json'
]
const snapshots = await Promise.all(protectedPaths.map((path) => readFile(path)))
const serve = process.argv.includes('--serve')
const loaded = await loadConfigFromFile({
  command: serve ? 'serve' : 'build',
  mode: serve ? 'development' : 'production'
})
const outputDir = await mkdtemp(join(tmpdir(), 'one-pipe-october-build-'))
const plugins = loaded.config.plugins
  .flat(Infinity)
  .filter(
    (plugin) => plugin && !['unplugin-vue-components', 'unplugin-auto-import'].includes(plugin.name)
  )
plugins.push(
  Components({
    deep: true,
    extensions: ['vue'],
    dirs: ['src/components'],
    resolvers: [ElementPlusResolver()],
    dts: false
  }),
  AutoImport({
    imports: ['vue', 'vue-router', '@vueuse/core', 'pinia'],
    resolvers: [ElementPlusResolver()],
    dts: false,
    eslintrc: { enabled: false }
  })
)
if (serve) {
  const { mockApiPlugin } = await import('./octoberBrowserFixtures.mjs')
  const server = await createServer({
    ...loaded.config,
    configFile: false,
    mode: 'development',
    plugins: [mockApiPlugin, ...plugins],
    server: { host: '127.0.0.1', port: 5190, strictPort: true, proxy: {} }
  })
  await server.listen()
  console.log(
    'Local mock preview: http://127.0.0.1:5190 (all /api requests intercepted; no real backend writes)'
  )
} else {
  await build({
    ...loaded.config,
    configFile: false,
    plugins,
    logLevel: 'warn',
    build: { ...loaded.config.build, outDir: outputDir, emptyOutDir: false }
  })
}
for (let i = 0; i < protectedPaths.length; i++) {
  if (!snapshots[i].equals(await readFile(protectedPaths[i])))
    throw new Error(`Build modified protected file: ${protectedPaths[i]}`)
}
if (!serve)
  console.log(
    `Production build passed. Generated declaration files preserved. Output: ${outputDir}`
  )