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

const autoprefixer = require('autoprefixer');

const cssRules = [
  {
    test: /\.css$/,
    exclude: /\.module\.css$/,
    use: [
      'style-loader',
      'css-loader',
      {
        loader: 'postcss-loader',
        options: {
          plugins: () => [autoprefixer('last 2 version', 'ie >= 10')],
        },
      },
    ],
  },
  {
    test: /\.glsl$/i,
    include: /vtk\.js[\/\\]Sources/,
    loader: 'shader-loader',
  },
  {
    test: /\.worker\.js$/,
    include: /vtk\.js[\/\\]Sources/,
    use: [
      {
        loader: 'worker-loader',
        options: { inline: true, fallback: false },
      },
    ],
  },
  {
    test: /\.css$/,
    include: /\.module\.css$/,
    use: [
      { loader: 'style-loader' },
      {
        loader: 'css-loader',
        options: {
          localIdentName: '[name]-[local]_[sha512:hash:base64:5]',
          modules: true,
        },
      },
      {
        loader: 'postcss-loader',
        options: {
          plugins: () => [autoprefixer('last 2 version', 'ie >= 10')],
        },
      },
    ],
  },
];

var entry = path.join(__dirname, './src/index.js');
const SRC_DIR = path.join(__dirname, './src');
const OUTPUT_DIR = path.join(__dirname, './dist');

module.exports = {
  entry,
  output: {
    path: OUTPUT_DIR,
    filename: 'index.umd.js',
    library: '@ohif/extension-vtk',
    libraryTarget: 'umd',
    globalObject: 'this',
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          // Find babel.config.js in monorepo root
          // https://babeljs.io/docs/en/options#rootmode
          rootMode: 'upward',
          presets: [
            [
              '@babel/preset-env',
              {
                // Do not transform ES6 modules to another format.
                // Webpack will take care of that.
                modules: false,
              },
            ],
          ],
        },
      },
    ].concat(cssRules),
  },
  resolve: {
    modules: [
      // Modules specific to this package
      path.resolve(__dirname, 'node_modules'),
      // Hoisted Yarn Workspace Modules
      path.resolve(__dirname, '../../node_modules'),
      SRC_DIR,
    ],
  },
  externals: [
    {
      'cornerstone-core': {
        commonjs: 'cornerstone-core',
        commonjs2: 'cornerstone-core',
        amd: 'cornerstone-core',
        root: 'cornerstone',
      },
      'cornerstone-math': {
        commonjs: 'cornerstone-math',
        commonjs2: 'cornerstone-math',
        amd: 'cornerstone-math',
        root: 'cornerstoneMath',
      },
    },
    '@ohif/i18n',
    'ohif-core',
    'dcmjs',
    'react-viewerbase',
    'react', //: 'React',
    'react-dom', //: 'ReactDOM',
    'react-redux', //: 'ReactRedux',
    'react-resize-detector', //: 'ReactResizeDetector',
    'react-viewerbase', //: 'reactViewerbase',
    'prop-types', //: 'PropTypes'
    /*/\b(vtk.js)/*/
  ],
};