const path = require('path');

module.exports = function (karma) {
  karma.set({
    browsers: [process.env.CI ? 'ChromeHeadless' : 'Chrome'],
    browserDisconnectTolerance: 2,
    frameworks: ['mocha'],
    client: {
      runInParent: true,
      mocha: {
        timeout: 2500,
      },
    },
    files: [
      {
        pattern: path.resolve(
          __dirname,
          require.resolve('url-polyfill/url-polyfill.js')
        ),
        watched: false,
      },
      {
        pattern: 'module-global.js',
        watched: false,
      },
      {
        pattern: path.resolve(
          __dirname,
          require.resolve('jquery/dist/jquery.js')
        ),
        watched: false,
      },
      {
        pattern: path.resolve(__dirname, require.resolve('expect.js/index.js')),
        watched: false,
      },
      {
        pattern: path.resolve(__dirname, require.resolve('sinon/pkg/sinon.js')),
        watched: false,
      },
      {
        pattern: path.resolve(
          __dirname,
          require.resolve('proj4/dist/proj4.js')
        ),
        watched: false,
      },
      {
        pattern: path.resolve(
          __dirname,
          require.resolve('pixelmatch/index.js')
        ),
        watched: false,
      },
      {
        pattern: path.resolve(__dirname, './test-extensions.js'),
      },
      {
        pattern: path.resolve(__dirname, './index_test.js'),
        watched: false,
      },
      {
        pattern: '**/*',
        included: false,
        watched: false,
      },
    ],
    exclude: ['**/*.test.js'],
    proxies: {
      '/rendering/': '/base/rendering/',
      '/spec/': '/base/spec/',
    },
    preprocessors: {
      '**/*.js': ['webpack', 'sourcemap'],
    },
    reporters: ['dots', 'coverage-istanbul'],
    coverageIstanbulReporter: {
      reports: ['text-summary', 'html'],
      dir: path.resolve(__dirname, '../coverage/'),
      fixWebpackSourcePaths: true,
    },
    webpack: {
      devtool: 'inline-source-map',
      mode: 'development',
      module: {
        rules: [
          {
            test: /\.js$/,
            use: {
              loader: 'babel-loader',
              options: {
                presets: ['@babel/preset-env'],
              },
            },
            include: path.resolve('src/ol/'),
            exclude: path.resolve('node_modules/'),
          },
          {
            test: /\.js$/,
            use: {
              loader: 'istanbul-instrumenter-loader',
              options: {
                esModules: true,
              },
            },
            include: path.resolve('src/ol/'),
            exclude: path.resolve('node_modules/'),
          },
          {
            test: /\.js$/,
            use: {
              loader: path.join(
                __dirname,
                '../examples/webpack/worker-loader.js'
              ),
            },
            include: [path.join(__dirname, '../src/ol/worker')],
          },
        ],
      },
      resolve: {
        alias: {
          // allow imports from 'ol/module' instead of specifiying the source path
          ol: path.join(__dirname, '..', 'src', 'ol'),
        },
      },
    },
    webpackMiddleware: {
      noInfo: true,
    },
  });

  process.env.CHROME_BIN = require('puppeteer').executablePath();
};