const CopyWebpackPlugin = require('copy-webpack-plugin')
const webpack = require('webpack') 
const cesiumSource = 'node_modules/cesium/Source'
const cesiumWorkers = '../Build/Cesium/Workers'
const path = require("path");
function resolve(dir) {
  return path.join(__dirname, dir);
}
module.exports = {
    publicPath: './',  // 基本路径
    outputDir: 'dist', // 构建时的输出目录
    assetsDir: 'static', // 放置静态资源的目录
    indexPath: 'index.html', // html 的输出路径
    filenameHashing: true, // 文件名哈希值
    lintOnSave: false, // 是否在保存的时候使用 `eslint-loader` 进行检查。
  
    // 组件是如何被渲染到页面中的？ （ast：抽象语法树；vDom：虚拟DOM）
    // template ---> ast ---> render ---> vDom ---> 真实的Dom ---> 页面
    // runtime-only：将template在打包的时候，就已经编译为render函数
    // runtime-compiler：在运行的时候才去编译template
    runtimeCompiler: false,
  
    transpileDependencies: [], // babel-loader 默认会跳过 node_modules 依赖。
    productionSourceMap: false, // 是否为生产环境构建生成 source map
  
    configureWebpack: {
      plugins: [
        new CopyWebpackPlugin([{ from: path.join(cesiumSource, cesiumWorkers), to: 'Workers' }]),
        new CopyWebpackPlugin([{ from: path.join(cesiumSource, 'Assets'), to: 'Assets' }]),
        new CopyWebpackPlugin([{ from: path.join(cesiumSource, 'Widgets'), to: 'Widgets' }]),
        new CopyWebpackPlugin([{ from: path.join(cesiumSource, 'ThirdParty/Workers'), to: 'ThirdParty/Workers' }]),
   
        new webpack.DefinePlugin({
          CESIUM_BASE_URL: JSON.stringify('./')
        })
      ],
      module: {
        unknownContextCritical: false,
        unknownContextRegExp: /\/cesium\/cesium\/Source\/Core\/buildModuleUrl\.js/
      },
      // 配置cesium----开始
      amd: {
        toUrlUndefined: true
      },
      output: {
        sourcePrefix: ' '
      }
     },
    devServer: {
      proxy: {
        '/socket.io':{
          target: 'http://192.168.1.6:1234', // target host
          changeOrigin: true, // needed for virtual hosted sites
          logLevel: 'debug'
        },
        '/sockjs-node': {
          target: 'http://192.168.1.6:1234',
          ws: false,
          changeOrigin: true
        }
          
      }
    },

    chainWebpack: config => {
      config.resolve.alias
        .set("@", resolve("src"))
        .set("assets", resolve("src/assets"))
        .set("components", resolve("src/components"))
        .set("public", resolve("public"))
        .set("cesium",path.resolve(__dirname, cesiumSource))
    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/assets'))  // 存放 svg 目录的目录
      .end()
    config.module
      .rule('assets')
      .test(/\.svg$/)
      .include.add(resolve('src/assets'))  // 存放 svg 目录的目录
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()
    }
  }