var path = require('path');
var babel = require('rollup-plugin-babel');
var babelrc = require('babelrc-rollup').default;
var json = require('rollup-plugin-json');
var commonjs = require('rollup-plugin-commonjs');
var nodeResolve = require('rollup-plugin-node-resolve');
var builtins = require('rollup-plugin-node-builtins');

module.exports = function(config) {
  config.set({
    // base path, that will be used to resolve files and exclude
    basePath: '',

    // frameworks to use
    frameworks: ['mocha', 'should'],


    // list of files / patterns to load in the browser
    files: [
      'test/integration/init.js',
      'bower_components/babel-polyfill/browser-polyfill.js',
      'bower_components/d3/d3.js',
      'dist/mapexplorer-core.js',
      'test/integration/*.test.js'
    ],

    preprocessors: {
      'test/integration/init.js': ['rollup'],
      'test/integration/*.test.js': ['rollup']
    },

    rollupPreprocessor: {
      plugins: [
        json(),
        babel(Object.assign({
          exclude: 'node_modules/**'
        }, babelrc())),
        builtins(),
        nodeResolve({
          jsnext: true,
          browser: true,
          preferBuiltins: true,
          skip: ['d3-selection', 'mapexplorer-core']
        }),
        commonjs({
          // non-CommonJS modules will be ignored, but you can also
          // specifically include/exclude files
          // include: 'node_modules/**',  // Default: undefined
          // exclude: [],
          exclude: ['node_modules/rollup-plugin-node-globals/**']
        })
      ],
      globals: {
        'd3-selection': 'd3',
        'mapexplorer-core': 'mapexplorerCore'
      },
      // will help to prevent conflicts between different tests entries
      format: 'iife',
      sourceMap: 'inline'
    },

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


    // test results reporter to use
    // possible values: 'dots', 'progress', 'junit', 'growl', 'coverage'
    reporters: ['progress'],


    // 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,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // Start these browsers, currently available:
    // - Chrome
    // - ChromeCanary
    // - Firefox
    // - Opera (has to be installed with `npm install karma-opera-launcher`)
    // - Safari (only Mac; has to be installed with `npm install karma-safari-launcher`)
    // - PhantomJS
    // - IE (only Windows; has to be installed with `npm install karma-ie-launcher`)
    browsers: ['PhantomJS', 'Chrome'],


    // If browser does not capture in given timeout [ms], kill it
    captureTimeout: 60000,


    // Continuous Integration mode
    // if true, it capture browsers, run tests and exit
    singleRun: false
  });

  if (process.env.TRAVIS) {
    config.set({
      browsers: ['TravisCI_Chrome', 'PhantomJS'],
      customLaunchers: {
        TravisCI_Chrome: {
          base: 'Chrome',
          flags: ['--no-sandbox']
        }
      }
    });
  }
};