const webpack = require('webpack');
const path = require('path');

const CircularDependencyPlugin = require('circular-dependency-plugin')

const isProduction = process.env.NODE_ENV === 'production';
const isMock = process.env.NODE_ENV === 'mock';

const config = {
    entry: {
      'cockpit': './src/cockpit.js',
      'mass-graduation': './src/mass-graduation.js',
      'admin-tools': './src/admin-tools.js',
    },
    output: {
      path: path.resolve(__dirname, 'dist'),
    },
    module: {
      rules: [
        {
          test: /\.(js|ts)$/,
          exclude: /node_modules/,
          use: {
            loader: 'babel-loader',
            options: {
              presets: [
                "@babel/preset-env",
                "@babel/preset-typescript"
              ],
            }
          }
        },
        {
          test: /\.png/,
          type: 'asset/inline',
        },
      ],
    },
    plugins: [
        new webpack.NormalModuleReplacementPlugin(
            /-ENV.(js|ts)/,
            (resource) => {
                resource.request = resource.request.replace(
                    /-ENV/,
                    `-${isMock ? "mock" : "prod"}`,
                );

                if (resource.createData) {
                    resource.createData.request = resource.request;
                }
            }
        ),
        new CircularDependencyPlugin({
          // exclude detection of files based on a RegExp
          exclude: /node_modules/,
          // add errors to webpack instead of warnings
          failOnError: true,
          // allow import cycles that include an asyncronous import,
          // e.g. via import(/* webpackMode: "weak" */ './file.js')
          allowAsyncCycles: false,
          // set the current working directory for displaying module paths
          cwd: process.cwd(),
        })
    ],
};

module.exports = () => {
    if (isProduction) {
        config.mode = 'production';
    } else {
        config.mode = 'development';
    }
    return config;
};