'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

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

const name = defaultSettings.title || '后台管理系统' // page title

const port = process.env.port || process.env.npm_config_port || 8010 // dev port


module.exports = {

    publicPath: process.env.NODE_ENV === 'production'
        ? '/backend/'
        : '/',
    outputDir: 'backend',
    assetsDir: 'static',
    indexPath: 'index.html',
    filenameHashing: true,
    lintOnSave: process.env.NODE_ENV === 'development',
    configureWebpack: {
        name: name,
        resolve: {
            alias: {
                '@': resolve('src')
            }
        }
    },
    //服务和代理配置
    devServer: {
        port: port,
        open: false,
        overlay: {
            warnings: false,
            errors: true
        },
        proxy: {
            // 解決跨域问题
            // detail: https://cli.vuejs.org/config/#devserver-proxy
            [process.env.VUE_APP_BASE_API]: {
                target: `http://110.249.137.83:8090/index.php`,
                changeOrigin: true,
                pathRewrite: {
                    ['^' + process.env.VUE_APP_BASE_API]: ''
                }
            }
        }
    },

    //允许对内部的 webpack 配置进行更细粒度的修改
    chainWebpack: config => {
        config.module
            .rule('vue')
            .use('vue-loader')
            .loader('vue-loader')
            .tap(options => {
                options.compilerOptions.preserveWhitespace = true
                return options
            })
            .end()

        // set svg-sprite-loader
        config.module
            .rule('svg')
            .exclude.add(resolve('src/icons'))
            .end()
        config.module
            .rule('icons')
            .test(/\.svg$/)
            .include.add(resolve('src/icons'))
            .end()
            .use('svg-sprite-loader')
            .loader('svg-sprite-loader')
            .options({
                symbolId: 'icon-[name]'
            })
            .end()
        config
            .optimization.splitChunks({
            chunks: 'all',
            cacheGroups: {
                libs: {
                    name: 'chunk-libs',
                    test: /[\\/]node_modules[\\/]/,
                    priority: 10,
                    chunks: 'initial' // only package third parties that are initially dependent
                },
                elementUI: {
                    name: 'chunk-elementUI', // split elementUI into a single package
                    priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                    test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                },
                commons: {
                    name: 'chunk-commons',
                    test: resolve('src/components'), // can customize your rules
                    minChunks: 3, //  minimum common number
                    priority: 5,
                    reuseExistingChunk: true
                }
            }
        })
        config.optimization.runtimeChunk('single')

    }
}