module.exports = function (grunt) {

    var webpack = require("webpack");
    // var webpackConfig = require("./webpack.config.js");
    var path = require("path");

    grunt.initConfig({

        jshint: {
            src: [
                'Gruntfile.js',
                'src-es6/**/*.js'
            ],
            options: {
                jshintrc: '.jshintrc'
            }
        },

        qunit: {
            files: ['test/**/*.html']
        },

        "webpack-dev-server": {
            options: {
                webpack: webpack.dev,
                publicPath: "/src/"
            },
            start: {
                keepAlive: true,
                webpack: {
                    devtool: "eval",
                    debug: true
                }
            }
        },

        webpack: {
            // "dev": {
            //     entry: __dirname + '/src-es6/tablefilter.js',
            //     // entry: {
            //     //     tablefilter: __dirname + '/src-es6/tablefilter.js',
            //     //     colsVisibility: __dirname +
            //     //         '/src-es6/extensions/colsVisibility/colsVisibility.js'
            //     // },
            //     output: {
            //         publicPath: "/src/",
            //         path: __dirname + "/src",
            //         filename: "tablefilter.js",
            //         chunkFilename: "[name].js",
            //         libraryTarget: 'umd'
            //     },
            //     resolve: {
            //         extensions: ['', '.js']
            //     },
            //     module: {
            //         loaders: [{
            //             test: path.join(__dirname, 'src-es6'),
            //             exclude: /node_modules/,
            //             query: {
            //                 compact: false
            //             },
            //             loader: 'babel-loader'
            //         }]
            //     },
            //     devtool: "sourcemap",
            //     debug: true
            // },
            "build": {
                entry: __dirname + '/src-es6/tablefilter.js',
                // entry: {
                //     tablefilter: __dirname + '/src-es6/tablefilter.js',
                //     sortabletable: __dirname + '/libs/sortabletable.js'
                // },
                output: {
                    publicPath: "/dist/",
                    path: __dirname + "/dist",
                    filename: "tablefilter.js",
                    // chunkFilename: "[name]-[chunkhash].js",
                    chunkFilename: "[name].js",
                    libraryTarget: 'umd'
                },
                resolve: {
                    extensions: ['', '.js'],
                    alias: {
                        sortabletable: "../../../libs/sortabletable.js"
                        // ,
                        // adapterSortabletable:
                        //     './extensions/sortabletable/adapterSortabletable'
                    }
                },
                // externals: {
                //     'sortabletable': "SortableTable"
                // },
                module: {
                    loaders: [{
                        test: path.join(__dirname, 'src-es6'),
                        exclude: /node_modules/,
                        query: {
                            compact: false
                        },
                        loader: 'babel-loader'
                    }]
                },
                plugins: [
                    // new webpack.DefinePlugin({
                    //     "process.env": {
                    //         // This has effect on the react lib size
                    //         "NODE_ENV": JSON.stringify("production")
                    //     }
                    // }),
                    // new webpack.IgnorePlugin(/adapterSortabletable$/),
                    new webpack.optimize.DedupePlugin(),
                    new webpack.optimize.MinChunkSizePlugin(
                        {minChunkSize: 10000})
                    // ,
                    // new webpack.optimize.UglifyJsPlugin()
                ]
            }
        },

        babel: {
            options: {
                sourceMap: true,
                modules: 'amd',
                compact: false
            },
            dist: {
                files: [{
                    expand: true,
                    cwd: 'src-es6',
                    src: ['**/*.js'],
                    dest: 'dev'
                }]
            }
        }

    });

    grunt.loadNpmTasks('grunt-contrib-jshint');
    grunt.loadNpmTasks('grunt-contrib-qunit');
    grunt.loadNpmTasks('grunt-webpack');
    grunt.loadNpmTasks('grunt-babel');

    // The development server (the recommended option for development)
    grunt.registerTask("default", ["webpack-dev-server:start"]);

    // Build and watch cycle (another option for development)
    // Advantage: No server required, can run app from filesystem
    // Disadvantage: Requests are not blocked until bundle is available,
    //               can serve an old app on too fast refresh
    grunt.registerTask("dev", ["webpack:dev"/*, "watch:app"*/]);

    // Production build
    grunt.registerTask("build", ['jshint', "webpack:build"]);

    // Tests
    grunt.registerTask('test', ['qunit']);

    // Transpile with Babel
    grunt.registerTask('transpile', ['babel']);

};