/**
 * base config
 * author: houjiazong <houjiazong@gmail.com>
 * date: 2019/08/08
 */
const path = require('path')
const fs = require('fs')
const child_process = require('child_process')
const webpack = require('webpack')
const AutoDllPlugin = require('autodll-webpack-plugin')
const createThemeColorReplacerPlugin = require('./src/config/plugin.config')

const PROXY_TIMEOUT = 1000 * 60 * 2

function resolve (dir) {
  return path.join(__dirname, dir)
}

function fsExistsSync (path) {
  try {
    fs.accessSync(path, fs.F_OK)
  } catch (e) {
    return false
  }
  return true
}

function getModuleList () {
  return fs.readdirSync(resolve('./containers'))
}

const getBuildInfo = () => {
  const getDate = D => `${D.getFullYear() + '-' + (D.getMonth() + 1) + '-' + D.getDate() + ' ' + D.getHours() + ':' + D.getMinutes()}`
  const getCommitMSg = dirPath => {
    const commitDateObj = new Date(child_process.execSync(`cd ${dirPath} && git show -s --format=%cd`).toString())
    const commit = child_process.execSync(`cd ${dirPath} && git show -s --format=%H`).toString().trim()
    const commitUserName = child_process.execSync(`cd ${dirPath} && git show -s --format=%cn`).toString().trim()
    const commitDate = getDate(commitDateObj)
    let head = '-'
    const gitHEAD = path.join(dirPath, '.git/HEAD') // git 最后一次提交的 Head
    if (fsExistsSync(path.resolve(__dirname, gitHEAD))) {
      head = fs.readFileSync(path.resolve(__dirname, gitHEAD), 'utf-8').trim()
    }
    return {
      commit,
      commitUserName,
      commitDate,
      head,
    }
  }
  const nowDate = new Date()
  const buildDate = `${nowDate.getFullYear() + '-' + (nowDate.getMonth() + 1) + '-' + nowDate.getDate() + ' ' + nowDate.getHours() + ':' + nowDate.getMinutes()}`
  const containers = fs.readdirSync('./containers').filter(item => !/^\..*/.test(item)) // 忽略隐藏文件
  const gitBranch = child_process.execSync('git branch --show-current').toString()
  const info = {
    scope: getCommitMSg('./'),
    src: getCommitMSg('./src'),
    buildDate,
    branch: gitBranch,
  }
  containers.forEach(dir => {
    info[dir] = getCommitMSg(path.join('./containers', dir))
  })
  return { ...info, buildMachine: 'docker' }
}

const devServerCoustomConfig = fsExistsSync(resolve('./dev.server.config.js')) ? require('./dev.server.config.js') : {}

module.exports = {
  lintOnSave: process.env.NODE_ENV !== 'production',
  configureWebpack: (config) => {
    config.plugins.push(createThemeColorReplacerPlugin())
    config.plugins.push(new webpack.DefinePlugin({
      themeColor: JSON.stringify(process.env.THEME_COLOR),
      theme: JSON.stringify(process.env.THEME),
    }))
    const aliasSrcDirConfig = {}
    const modules = getModuleList()
    modules.forEach(item => {
      aliasSrcDirConfig[`@${item}`] = resolve(`./containers/${item}`)
    })
    Object.assign(config, {
      resolve: {
        extensions: ['.js', '.vue', '.json'],
        alias: {
          '@': resolve('./src'),
          '~': resolve('./src'),
          '@@': resolve('.'),
          '~~': resolve('.'),
          '@scope': resolve('./scope'),
          '@containers': resolve('./containers'),
          ...aliasSrcDirConfig,
        },
      },
    })
  },
  chainWebpack: (config) => {
    const svgRule = config.module.rule('svg')
    svgRule.uses.clear()
    svgRule.include.add(resolve('./src/components/Icon'))
    svgRule.include.add(resolve('./scope/assets'))
    svgRule
      .test(/\.svg$/)
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'oc-[name]',
      })
    const imagesRule = config.module.rule('images')
    imagesRule.exclude.add(resolve('./src/components/Icon'))
    imagesRule.exclude.add(resolve('./scope/assets'))
    config.module.rule('images').test(/\.(png|jpe?g|gif|svg)(\?.*)?$/)
    config.plugin('define').tap((definitions) => {
      definitions[0]['process.env'].VUE_APP_BUILDINFO = JSON.stringify(getBuildInfo())
      definitions[0]['process.env'].THEME_COLOR = JSON.stringify(process.env.THEME_COLOR)
      definitions[0]['process.env'].THEME = JSON.stringify(process.env.THEME)
      definitions[0]['process.env'].BRAND = process.env.BRAND
      definitions[0]['process.env'].PRODUCT = process.env.PRODUCT
      return definitions
    })

    config
      .plugin('autodll')
      .use(new AutoDllPlugin({
        inject: true, // 设为 true 就把 DLL bundles 插到 index.html 里
        filename: '[name].[chunkhash].js',
        context: path.resolve(__dirname), // AutoDllPlugin 的 context 必须和 package.json 的同级目录，要不然会链接失败
        entry: {
          vendor: [
            'vue',
            'vue-router',
            'axios',
            'vuex',
            'moment',
            'vue-i18n',
            'codemirror',
            'vxe-table',
            'ramda',
            'lodash',
            'marked',
            'clipboard',
            'crypto-js',
            'echarts',
            'v-charts',
            'xterm',
            'jsrsasign',
            'ajv',
            'socket.io-client',
            'ant-design-vue',
            'vue-grid-layout',
          ],
        },
      }))
      .end()
    if (process.env.analyzer_report) { // 是否开启打包分析
      config
        .plugin('webpack-bundle-analyzer')
        .use(require('webpack-bundle-analyzer').BundleAnalyzerPlugin)
    }
  },
  css: {
    loaderOptions: {
      less: {
        lessOptions: {
          javascriptEnabled: true,
        },
      },
    },
  },
  /**
   * 考虑到每个人的配置习惯不同，如有自定义 devServer 配置的需求请在根目录下创建 dev.server.config.js 文件
   * 然后使用 module.exports 导出配置即可，请勿直接修改以下配置 !!
   * dev.server.config.js 不进行 git 提交操作
   */
  devServer: Object.assign({
    overlay: {
      warnings: true,
      errors: true,
    },
    open: process.platform === 'darwin',
    port: 8080,
    proxy: {
      '/api': {
        target: 'https://127.0.0.1:3000',
        ws: true,
        changeOrigin: true,
        proxyTimeout: PROXY_TIMEOUT,
      },
    },
    watchOptions: {
      aggregateTimeout: 600, // 当第一个文件更改，会在重新构建前增加延迟。这个选项允许 webpack 将这段时间内进行的任何其他更改都聚合到一次重新构建里。以毫秒为单位q
      ignored: [/.git/, /node_modules/],
    },
  }, devServerCoustomConfig),
}