const CompressionWebpackPlugin = require('compression-webpack-plugin')
const path = require('path')
const CopyWebpackPlugin = require('copy-webpack-plugin')

module.exports = {
    // eslint-loader 是否在保存的时候检查
    lintOnSave: true,

    // webpack配置
    configureWebpack: config => {
        if (process.env.UNI_PLATFORM === 'h5') {

            // 开启gzip压缩
            config.plugins = [
                ...config.plugins,
                new CompressionWebpackPlugin({
                    filename: '[path].gz[query]',
                    algorithm: 'gzip',
                    test: new RegExp('\\.(' + ['js', 'css'].join('|') + ')$'),
                    threshold: 8192,
                    minRatio: 0.8,
                }),
            ]

            // public目录下文件文件设置为静态资源目录
            config.plugins = [
                ...config.plugins,
                new CopyWebpackPlugin([
                    {
                        from: path.join(__dirname, 'public'),
                        to: path.join(__dirname, 'dist', process.env.NODE_ENV === 'production' ? 'build' : 'dev', process.env.UNI_PLATFORM),
                    },
                ]),
            ]
        }
    },

    // 生产环境是否生成 sourceMap 文件
    productionSourceMap: false,

    // css相关配置
    css: {
        sourceMap: process.env.NODE_ENV !== 'production',
        loaderOptions: {
            scss: {
                prependData: `@import "~@/common/scss/public.scss";`,
            },
        },
    },

    // webpack-dev-server 相关配置
    devServer: {
        open: false, // 配置自动启动浏览器
        port: 8080, // 端口号
        https: false,
        hotOnly: true,
        disableHostCheck: true,
        proxy: '',// 设置代理
    },

    // 第三方插件配置
    pluginOptions: {},
}