const path = require('path');
const CompressionPlugin = require('compression-webpack-plugin');
const SitemapWebpackPlugin = require('sitemap-webpack-plugin').default;
const sass = require('sass');  // 引入 Dart Sass

module.exports = {
  // 全局页面头部设置
  target: 'static',  // 使项目成为静态站点
  head: {
    title: 'raylinx',
    htmlAttrs: {
      lang: 'en'
    },
    script: [
      // 如果需要内嵌其他脚本，请根据需求开启下面代码
      {
        innerHTML: `(function(d,w,c){if(w[c])return;var s=d.createElement("script");w[c]=function(){(w[c].z=w[c].z||[]).push(arguments);};s.async=true;s.src="https://static.ahc.ink/hecong.js";if(d.head)d.head.appendChild(s);})(document,window,"_AIHECONG");_AIHECONG("ini",{channelId:"9BgJ9p"});`,
        type: 'text/javascript',
        body: true
      }
    ],
    __dangerouslyDisableSanitizers: ['script'], // 允许渲染原始 HTML
    meta: [
      { charset: 'utf-8' },
      { name: 'viewport', content: 'width=device-width, initial-scale=1' },
      { hid: 'description', name: 'description', content: 'My awesome description' },
      { name: 'format-detection', content: 'telephone=no' }
    ],
    link: [
      { rel: 'icon', type: 'image/x-icon', href: '/favicon.png' }
    ]
  },

  // 全局 CSS
  css: [
    'element-ui/lib/theme-chalk/index.css',
    'vant/lib/index.css'  // 确保 Vant 的样式也被加载
  ],

  // 插件（注意：含有 fs 操作的插件只在服务器端加载）
  plugins: [
    '@/plugins/element-ui',
    '@/plugins/vant',
    '@/plugins/global-mixin.js'
    // '@/plugins/gtm.client.js'
  ],

  // 自动导入组件
  components: true,

  // 开发和构建模块
  buildModules: [],

  // 模块
  modules: [
    '@nuxtjs/axios',
    '@nuxtjs/gtm',
    '@nuxt/content'
  ],

  gtm: {
    id: 'GTM-T4DJXJTT',
    layer: 'dataLayer',
    pageTracking: true,  // 自动发送页面事件
    enabled: process.env.NODE_ENV === 'production'
  },

  axios: {
    baseURL: '/'
  },

  // 构建配置
  build: {
    transpile: [/^element-ui/, /^vant/],  // 确保 Nuxt 知道需要转译 Vant 和 Element-UI
    loaders: {
      scss: {
        implementation: sass,  // 使用 Dart Sass
        sassOptions: {
          // 添加 legacy API 静默处理选项
          silenceDeprecations: ['legacy-js-api']
        }
      }
    },

    // 扩展 Webpack 配置
    extend(config, ctx) {
      // 生产环境中引入 CompressionWebpackPlugin
      if (!ctx.isDev) {
        config.plugins.push(
          new CompressionPlugin({
            algorithm: 'gzip',
            test: /\.(js|css|html|svg|gif|png|jpeg|txt)$/,
            threshold: 2048,
            filename: '[path][base].gz',
            deleteOriginalAssets: false
          })
        );
      }

      // 引入 SitemapWebpackPlugin 并正确设置
      const routes = ['/', '/aboutUs', '/contactUs'];
      config.plugins.push(
        new SitemapWebpackPlugin({
          base: 'https://www.example.com',
          paths: routes.map(route => ({
            path: route,
            lastmod: new Date().toISOString(),
            priority: 0.8,
            changefreq: 'monthly'
          }))
        })
      );

      // 设置别名
      config.resolve.alias['@'] = path.resolve(__dirname);
    }
  }
};