/**
 * @file Configuration de webpack.
 * Webpack prend tous les fichiers sources, les traduit si nécessaire et les rassemble en un bundle.js exécutable.
 * Cela permet de déployer directement le code produit par chaque commit
 * @author manifold
 */

const path = require('path');
const nodeExternals = require('webpack-node-externals');
const CopyWebpackPlugin = require('copy-webpack-plugin');

const config = {
    entry: path.resolve(__dirname, 'src', 'index.ts'),
    output: {
        path: path.resolve(__dirname, 'build'),
        publicPath: '/assets/',
        filename: 'bundle.js'
    },

    target: 'node',
    // allows using __dirname with the correct semantic (otherwise __dirname will return '/' regardless of file)
    node: { __dirname: true }, 
    
    // Choose a style of source mapping to enhance the debugging process
    // https://webpack.js.org/configuration/devtool/
    //devtool: 'inline-source-map', //TODO: in production, or if deemed too slow, remove this

    // do not bundle node_modules, nor secret config files
    externals: [
        nodeExternals(),
        {
            ldapConfig: './ldap_config.json',
            credentialsConfig: './ldap_connexion_config.json'
        }
    ],

    resolve: {
        //enables users to leave off the extension when importing
        //e.g. import File from './path/to/file' vs. './path/to/file.js'
        extensions: ['.ts', '.js']
    },

    plugins: [
        //Copies individual files or entire directories to the build directory
        new CopyWebpackPlugin([{
            from: 'src/adminview/css',
            to: 'css'
        }, {
            from: 'src/adminview/views',
            to: 'views'
        }])
    ],

    module: {
        rules: [{
            test: /\.js$/,
            use: ['eslint-loader']
        },{
            test: /\.ts$/,
            use: ['ts-loader'],
        },{
            test: /\.css$/,
            use: ['style-loader', 'css-loader']
        },{
            type: 'javascript/auto',
            test: /\.json$/,
            use: ['file-loader']
        }, {
            test: /\.graphql?$/,
            use: [{
                loader: 'webpack-graphql-loader',
                options: {
                    // validate: true,
                    // schema: "./path/to/schema.json",
                    // removeUnusedFragments: true
                    // etc. See "Loader Options" below
                }
            }]
        }, {
            test: /\.(png|jpg|ico)$/,
            use: {
                loader: 'url-loader?limit=8192'
                // loads files as base64 encoded URL if filesize is < limit
                // default fallback: file-loader
            }
            //use: ['file-loader']
        }]
    },

};

module.exports = config;