// This is a karma config file. For more details see
//   http://karma-runner.github.io/0.13/config/configuration-file.html
// we are also using it with karma-webpack
//   https://github.com/webpack/karma-webpack

var path = require('path');
var merge = require('webpack-merge');
var baseConfig = require('../../../webpack/webpack.base.conf');
var utils = require('../../../webpack/utils');
var webpack = require('webpack');
var projectRoot = path.resolve(__dirname, '../../../');

var webpackConfig = merge(baseConfig, {
  // use inline sourcemap for karma-sourcemap-loader
  module: {
    loaders: utils.styleLoaders(),
  },
  devtool: '#inline-source-map',
  vue: {
    loaders: {
      js: 'isparta',
    },
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': require('../../../webpack/config/test.env'),
    }),
  ],
});

// no need for app entry during tests
delete webpackConfig.entry;

// make sure isparta loader is applied before eslint
webpackConfig.module.preLoaders = webpackConfig.module.preLoaders || [];
webpackConfig.module.preLoaders.unshift({
  test: /\.js$/,
  loader: 'isparta',
  include: [
    path.resolve(projectRoot, 'website/client'),
    path.resolve(projectRoot, 'website/common'),
  ],
});

// only apply babel for test files when using isparta
webpackConfig.module.loaders.some(function (loader, i) {
  if (loader.loader === 'babel') {
    loader.include = path.resolve(projectRoot, 'test/client/unit');
    return true;
  }
});

module.exports = function (config) {
  config.set({
    // to run in additional browsers:
    // 1. install corresponding karma launcher
    //    http://karma-runner.github.io/0.13/config/browsers.html
    // 2. add it to the `browsers` array below.
    browsers: ['PhantomJS'],
    frameworks: ['mocha', 'sinon-chai'],
    reporters: ['spec', 'coverage'],
    files: ['./index.js'],
    preprocessors: {
      './index.js': ['webpack', 'sourcemap'],
    },
    webpack: webpackConfig,
    webpackMiddleware: {
      noInfo: true,
    },
    coverageReporter: {
      dir: './coverage',
      reporters: [
        { type: 'lcov', subdir: '.' },
        { type: 'text-summary' },
      ],
    },
  });
};