import { fileURLToPath, URL } from 'node:url'
import { writeFileSync } from 'node:fs'
import { join } from 'node:path'
import { defineConfig, type Plugin } from 'vite'
import vue from '@vitejs/plugin-vue'

const resolve = (p: string) => fileURLToPath(new URL(p, import.meta.url))
const outDir = resolve('../server/internal/webui/assets')

// emptyOutDir 会把 .gitkeep 一起删掉，导致「新克隆的仓库没构建前端时 go:embed 匹配不到文件」。
// 构建结束后补回来，保证任何状态下 go build 都能通过。
function keepAssetsGitkeep(): Plugin {
  return {
    name: 'scoreboard:keep-assets-gitkeep',
    closeBundle() {
      writeFileSync(join(outDir, '.gitkeep'), '')
    },
  }
}

export default defineConfig({
  plugins: [vue(), keepAssetsGitkeep()],
  resolve: {
    alias: { '@': resolve('./src') },
  },
  build: {
    // 构建产物直接输出到 Go 的 embed 目录
    outDir,
    emptyOutDir: true,
    rollupOptions: {
      input: {
        index: resolve('./index.html'),
        display: resolve('./display.html'),
        admin: resolve('./admin.html'),
      },
    },
  },
})