import { defineConfig, UserConfigExport } from 'vite'
import vue from '@vitejs/plugin-vue'
import path from 'path'
import WindiCss from 'vite-plugin-windicss';
import AutoImport from 'unplugin-auto-import/vite'
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'
import Icons from 'unplugin-icons/vite'
import IconsResolver from 'unplugin-icons/resolver'
import topLevelAwait from "vite-plugin-top-level-await";

// https://vitejs.dev/config/
export default defineConfig(({ command }) => {

  const config: UserConfigExport = {
    base: '/manage/',
    // base: '/app/xdjy/',
    // base: '/app/xdhq/',
    resolve: {
      alias: {
        '~': `${path.resolve(__dirname, 'src')}`,
        '~/': `${path.resolve(__dirname, 'src/')}`,
        '~components': `${path.resolve(__dirname, 'src/components')}`,
        '@': `${path.resolve(__dirname, 'src')}`,
      },
    },
    css: {
      preprocessorOptions: {
        scss: {
          additionalData: `@use "~/styles/element/index.scss" as *;`,
        },
      },
    },
    plugins: [
      topLevelAwait({
        // The export name of top-level await promise for each chunk module
        promiseExportName: "__tla",
        // The function to generate import names of top-level await promise in each chunk module
        promiseImportName: i => `__tla_${i}`
      }),
      vue({
        reactivityTransform: true
      }),
      WindiCss(),
      AutoImport({
        resolvers: [ElementPlusResolver()],
      }),
      Components({
        resolvers: [ElementPlusResolver(), IconsResolver()],
      }),
      Icons({
        compiler: 'vue3',
        autoInstall: true,
      }),
    ],
    build: {
      target: 'chrome86',
      // target: 'esnext',
      rollupOptions: {
        output: {
          manualChunks: {
            lodash: ['lodash-es'],
            echarts: ['echarts'],
            axios: ['axios']
          }
        }
      }
    },

  }

  if (command === 'serve') {
    config.base = "/"
  } else {

  }


  return config
}


)