module.exports = (config) => {
  config.set({
    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: "../../",

    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ["jasmine", "detectBrowsers"],

    // list of files / patterns to load in the browser
    files: [
      { pattern: "spec/utils.ts", watched: false },
      { pattern: "spec/common/**/*.ts", watched: false },
      { pattern: "spec/web/**/*.ts", watched: false },
    ],

    // list of files to exclude
    exclude: [],

    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      "spec/**/*.ts": "webpack",
    },

    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ["progress", "kjhtml"],

    // web server port
    port: 9876,

    // enable / disable colors in the output (reporters and logs)
    colors: true,

    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity,

    client: {
      clearContext: false, // leave Jasmine Spec Runner output visible in browser
    },

    webpack: {
      resolve: {
        extensions: [".js", ".ts", ".tsx"],
      },
      module: {
        rules: [
          {
            test: /\.tsx?$/,
            loader: "ts-loader",
            options: {
              compiler: "ttypescript",
            },
          },
        ],
      },
      stats: {
        colors: true,
        modules: true,
        reasons: true,
        errorDetails: true,
      },
      devtool: "inline-source-map",
    },

    detectBrowsers: {
      usePhantomJS: false,
      postDetection: (availableBrowsers) => {
        const result = availableBrowsers;
        function removeBrowser(browser) {
          if (availableBrowsers.length > 1 && availableBrowsers.indexOf(browser) > -1) {
            result.splice(result.indexOf(browser), 1);
          }
        }

        removeBrowser("IE");
        removeBrowser("Opera");
        removeBrowser("SafariTechPreview");

        var githubAction =
          process.env.GITHUB_WORKFLOW != null && process.env.GITHUB_WORKFLOW !== "";
        if (githubAction) {
          removeBrowser("Firefox");
          removeBrowser("Safari");
        }

        return result;
      },
    },
  });
};