const { defineConfig } = require('@vue/cli-service')

module.exports = defineConfig({
  transpileDependencies: true,
  lintOnSave: false,

  // 生产环境不生成 source map，减小包体积
  productionSourceMap: false,

  devServer: {
    port: 8080,
    open: true,
    proxy: {
      // /dev-api/auth/** → auth 服务
      '/dev-api/auth': {
        target: process.env.VUE_APP_AUTH_TARGET || 'http://localhost:8080',
        changeOrigin: true,
        pathRewrite: { '^/dev-api': '' }
      },
      // /dev-api/laboratory/** → laboratory 服务
      '/dev-api/laboratory': {
        target: process.env.VUE_APP_LAB_TARGET || 'http://localhost:8080',
        changeOrigin: true,
        pathRewrite: { '^/dev-api': '' }
      }
    }
  },

  css: {
    loaderOptions: {
      sass: {
        additionalData: `@import "@/styles/variables.scss";`
      }
    }
  },

  // 按需加载：将第三方库单独分包
  configureWebpack: {
    optimization: {
      splitChunks: {
        chunks: 'all',
        cacheGroups: {
          echarts: {
            name: 'chunk-echarts',
            test: /[\\/]node_modules[\\/]echarts[\\/]/,
            priority: 20
          },
          elementUI: {
            name: 'chunk-element-ui',
            test: /[\\/]node_modules[\\/]element-ui[\\/]/,
            priority: 15
          },
          vendors: {
            name: 'chunk-vendors',
            test: /[\\/]node_modules[\\/]/,
            priority: 10
          }
        }
      }
    }
  }
})