/*global path, __dirname, module, process */
'use strict'
const minimist = require('minimist');
const path = require('path');
const webpack = require('webpack');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const config = {
    entry: path.resolve(__dirname, 'src/converse.js'),
    externals: [{
        "window": "window"
    }],
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'converse.js'
    },
    devtool: 'source-map',
    plugins: [new MiniCssExtractPlugin({filename: '../dist/converse.css'})],
    module: {
        rules: [
        {
            test: path.resolve(__dirname, "node_modules/backbone.vdomview/backbone.vdomview"),
            use: 'imports-loader?backbone.nativeview'
        },
        {
            test: path.resolve(__dirname, "node_modules/xss/dist/xss"),
            use: "exports-loader?filterXSS,filterCSS"
        },
        {
            test: /templates\/.*\.(html|svg)$/,
            exclude: /node_modules/,
            use: [{
                loader: 'lodash-template-webpack-loader',
                options: {
                    "escape": /\{\{\{([\s\S]+?)\}\}\}/g,
                    "evaluate": /\{\[([\s\S]+?)\]\}/g,
                    "interpolate": /\{\{([\s\S]+?)\}\}/g,
                    // By default, template places the values from your data in the
                    // local scope via the with statement. However, you can specify
                    // a single variable name with the variable setting. This can
                    // significantly improve the speed at which a template is able
                    // to render.
                    "variable": 'o',
                    "prependFilenameComment": __dirname
                }
            }]
        },
        {
            test: /webfonts\/.*\.(woff(2)?|ttf|eot|truetype|svg)(\?v=\d+\.\d+\.\d+)?$/,
            use: [
            {
                loader: 'file-loader',
                options: {
                    name: '[path][name].[ext]',
                    outputPath: '../dist/'
                }
            }
            ]
        }, {
            test: /\.scss$/,
            use: [
                'style-loader',
                MiniCssExtractPlugin.loader, {
                    loader: 'css-loader',
                    options: {
                        sourceMap: true
                    }
                }, {
                    loader: 'sass-loader',
                    options: {
                    includePaths: [
                        path.resolve(__dirname, 'node_modules/')
                    ],
                    sourceMap: true
                }
            }]
        }, {
            test: /\.js$/,
            exclude: /(node_modules|spec|mockup)/,
            use: {
                loader: 'babel-loader',
                options: {
                    presets: [
                        ["@babel/preset-env", {
                            "targets": {
                                "browsers": [">1%", "not ie 11", "not op_mini all"]
                            }
                        }]
                    ]
                }
            }
        }, {
            test: /bootstrap\.native/,
            use: {
                loader: 'bootstrap.native-loader',
                options: {
                    bs_version: 4,
                    ignore: ['carousel', 'scrollspy']
                }
            }
        }],
    },
    resolve: {
        extensions: ['.js'],
        modules: [
            'node_modules',
            path.resolve(__dirname, "src")
        ],
        alias: {
            "IPv6":                     path.resolve(__dirname, "node_modules/urijs/src/IPv6"),
            "SecondLevelDomains":       path.resolve(__dirname, "node_modules/urijs/src/SecondLevelDomains"),
            "formdata-polyfill":        path.resolve(__dirname, "node_modules/formdata-polyfill/FormData"),
            "jquery":                   path.resolve(__dirname, "src/jquery-stub"),
            "punycode":                 path.resolve(__dirname, "node_modules/urijs/src/punycode"),
            "snabbdom":                 path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom"),
            "snabbdom-attributes":      path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom-attributes"),
            "snabbdom-class":           path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom-class"),
            "snabbdom-dataset":         path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom-dataset"),
            "snabbdom-eventlisteners":  path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom-eventlisteners"),
            "snabbdom-props":           path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom-props"),
            "snabbdom-style":           path.resolve(__dirname, "node_modules/snabbdom/dist/snabbdom-style"),
            "tovnode":                  path.resolve(__dirname, "node_modules/snabbdom/dist/tovnode"),
            "underscore":               path.resolve(__dirname, "src/underscore-shim")
        }
    }
}

function extend (o1, o2) {
    for (var i in o2) {
        if (Object.prototype.hasOwnProperty.call(o2, i)) {
            o1[i] = o2[i];
        }
    }
}

function parameterize () {
    const type = minimist(process.argv.slice(2)).type;
    const mode = minimist(process.argv.slice(2)).mode;
    const lang = minimist(process.argv.slice(2)).lang;

    if (type === 'headless') {
        console.log("Making a headless build");
        extend(config, {
            entry: "@converse/headless/headless.js",
            output: {
                path: path.resolve(__dirname, 'dist'),
                filename: 'converse-headless.js'
            },
        });
    }

    if (type === 'nodeps') {
        console.log("Making a build without 3rd party dependencies");
        extend(config, {
            entry: path.resolve(__dirname, 'src/converse.js'),
            externals: [{
                "backbone": "backbone",
                "backbone.nativeview": "backbone.nativeview",
                "backbone.vdomview": "backbone.vdomview",
                "backbone.browserStorage": "backbone.browserStorage",
                "backbone.overview": "backbone.overview",
                "es6-promise": "es6-promise",
                "lodash": "lodash",
                "lodash.converter": "lodash.converter",
                "lodash.noconflict": "lodash.noconflict",
                "strophe": "strophe",
                "strophe.ping": "strophe.ping",
                "strophe.rsm": "strophe.rsm",
                "window": "window"
            }],
            output: {
                path: path.resolve(__dirname, 'dist'),
                filename: 'converse-no-dependencies.js'
            },
        });
    }

    if (type === 'css') {
        console.log("Building only CSS");
        config.entry = path.resolve(__dirname, 'sass/converse.scss');
        config.output = {
            path: path.resolve(__dirname, 'tmp'),
            filename: 'css-builder.js'
        }
    }

    if (mode === 'production') {
        console.log("Making a production build");
        const fn = config.output.filename;
        config.output.filename = `${fn.replace(/\.js$/, '')}.min.js`;
    }
}

parameterize();

module.exports = config;