"use strict";
const path = require("path");
const config = require("../config");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const packageConfig = require("../package.json");

exports.assetsPath = function(_path) {
  const assetsSubDirectory = process.env.NODE_ENV === "production" ? config.build.assetsSubDirectory : config.dev.assetsSubDirectory;

  return path.posix.join(assetsSubDirectory, _path);
};

exports.cssLoaders = function(options) {
  options = options || {};

  const cssLoader = {
    loader: "css-loader",
    options: {
      sourceMap: options.sourceMap
    }
  };

  const postcssLoader = {
    loader: "postcss-loader",
    options: {
      sourceMap: options.sourceMap
    }
  };

  //  generate loader string to be used with extract text plugin
  function generateLoaders(loader, loaderOptions) {
    const loaders = [];

    //  Extract CSS when that option is specified
    //  (which is the case during production build)
    if (options.extract) {
      loaders.push(MiniCssExtractPlugin.loader);
    } else {
      loaders.push("vue-style-loader");
    }

    loaders.push(cssLoader);

    if (options.usePostCSS) {
      loaders.push(postcssLoader);
    }

    if (loader) {
      loaders.push({
        loader: loader + "-loader",
        options: Object.assign({}, loaderOptions, {
          sourceMap: options.sourceMap
        })
      });
    }

    return loaders;
  }
  //  https:// vue-loader.vuejs.org/en/configurations/extract-css.html
  return {
    css: generateLoaders(),
    postcss: generateLoaders(),
    less: generateLoaders("less"),
    sass: generateLoaders("sass", {
      indentedSyntax: true
    }),
    scss: generateLoaders("sass"),
    stylus: generateLoaders("stylus"),
    styl: generateLoaders("stylus")
  };
};

//  Generate loaders for standalone style files (outside of .vue)
exports.styleLoaders = function(options) {
  const output = [];
  const loaders = exports.cssLoaders(options);

  for (const extension in loaders) {
    const loader = loaders[extension];
    output.push({
      test: new RegExp("\\." + extension + "$"),
      use: loader
    });
  }

  return output;
};

exports.createNotifierCallback = () => {
  const notifier = require("node-notifier");

  return (severity, errors) => {
    if (severity !== "error") return;

    const error = errors[0];
    const filename = error.file && error.file.split("!").pop();

    notifier.notify({
      title: packageConfig.name,
      message: severity + ": " + error.name,
      subtitle: filename || "",
      icon: path.join(__dirname, "logo.png")
    });
  };
};

/* 这里是添加的部分 ---------------------------- 开始 */

//  glob是webpack安装时依赖的一个第三方模块，还模块允许你使用 *等符号, 例如lib/* .js就是获取lib文件夹下的所有js后缀名的文件
var glob = require("glob");
//  页面模板
var HtmlWebpackPlugin = require("html-webpack-plugin");
//  取得相应的页面路径，因为之前的配置，所以是src文件夹下的pages文件夹
var PAGE_PATH = path.resolve(__dirname, "../src/views/user");
//  用于做相应的merge处理
var merge = require("webpack-merge");
function resolve(dir) {
  return path.join(__dirname, "..", dir);
}

// 多入口配置
//  通过glob模块读取pages文件夹下的所有对应文件夹下的js后缀文件，如果该文件存在
//  那么就作为入口处理
exports.entries = function() {
  var entryFiles = glob.sync(PAGE_PATH + "/user.js");
  var map = {};
  // 主项目页面
  map["app"] = "./src/main.js";
  entryFiles.forEach(filePath => {
    var filename = filePath.substring(filePath.lastIndexOf("/") + 1, filePath.lastIndexOf("."));
    map[filename] = filePath;
  });
  return map;
};

// 多页面输出配置
//  与上面的多页面入口配置相同，读取pages文件夹下的对应的html后缀文件，然后放入数组中
exports.htmlPlugin = function() {
  let entryHtml = glob.sync(PAGE_PATH + "/user.html");
  let arr = [];
  entryHtml.forEach(filePath => {
    let filename = filePath.substring(filePath.lastIndexOf("/") + 1, filePath.lastIndexOf("."));
    let conf = {
      //  模板来源
      template: filePath,
      //  文件名称
      filename: filename + ".html",
      //  页面模板需要加对应的js脚本，如果不加这行则每个页面都会引入所有的js脚本
      chunks: ["user", filename],
      inject: true,
      // favicon: resolve('favicon.ico'),
      title: "vue-user",
      templateParameters: {
        BASE_URL: config.dev.assetsPublicPath + config.dev.assetsSubDirectory
      }
    };
    if (process.env.NODE_ENV === "production") {
      conf = merge(conf, {
        minify: {
          removeComments: true,
          collapseWhitespace: true,
          removeAttributeQuotes: true
        },
        chunksSortMode: "auto"
      });
    }
    arr.push(new HtmlWebpackPlugin(conf));
  });
  return arr;
};
/* 这里是添加的部分 ---------------------------- 结束 */