module.exports = function (grunt) {
  var browsers = [
    { browserName: "firefox", version: "19", platform: "XP" },
    { browserName: "firefox", platform: "linux" },
    { browserName: "chrome", platform: "linux" },
    { browserName: "internet explorer", platform: "Windows 8.1", version: "11" },
    { browserName: "internet explorer", platform: "WIN8", version: "10" },
    { browserName: "internet explorer", platform: "VISTA", version: "9" },
    { browserName: 'safari', platform: 'OS X 10.6' },
    { browserName: 'safari', platform: 'OS X 10.8' },
    { browserName: 'safari', platform: 'OS X 10.9' },
    { browserName: 'iphone', platform: 'OS X 10.9', version: '7.1' },
    { browserName: 'android', platform: 'Linux', version: '4.4' },
  ];
  var extraBrowsers = [
    { browserName: "firefox", platform: "linux", version: "30" },
    { browserName: "firefox", platform: "linux", version: "25" },
    { browserName: "firefox", platform: "OS X 10.9" },
    { browserName: "chrome", platform: "XP" },
    { browserName: "chrome", platform: "OS X 10.9" },
    { browserName: 'iphone', platform: 'OS X 10.8', version: '6.1' },
    { browserName: 'iphone', platform: 'OS X 10.8', version: '5.1' },
    { browserName: 'android', platform: 'Linux', version: '4.2' },
    // XXX haven't investigated these:
    //{ browserName: "opera", platform: "Windows 2008", version: "12" }
    //{ browserName: 'iphone', platform: 'OS X 10.6', version: '4.3' },
    //{ browserName: 'android', platform: 'Linux', version: '4.0' },
  ];
  if (grunt.option('extra')) {
      browsers = browsers.concat(extraBrowsers);
  }
  grunt.initConfig({
    connect: {
      server: {
        options: {
          base: "",
          port: 9999,
          useAvailablePort: true
        }
      }
    },
    'saucelabs-mocha': {
      all: {
        options: {
          urls: (function () {
            var urls = ["http://localhost:9999/test/"];
            if (grunt.option('extra')) {
              urls.push("http://localhost:9999/test-sham/");
            }
            return urls;
          }()),
          //tunnelTimeout: 5,
          build: process.env.TRAVIS_BUILD_NUMBER,
          tunneled: !process.env.SAUCE_HAS_TUNNEL,
          identifier: process.env.TRAVIS_JOB_NUMBER,
          sauceConfig: {
            'tunnel-identifier': process.env.TRAVIS_JOB_NUMBER
          },
          //concurrency: 3,
          browsers: browsers,
          testname: (function () {
            var testname = "mocha";
            if (process.env.TRAVIS_PULL_REQUEST &&
                process.env.TRAVIS_PULL_REQUEST !== 'false') {
              testname += ' (PR '+process.env.TRAVIS_PULL_REQUEST+')';
            }
            if (process.env.TRAVIS_BRANCH &&
                process.env.TRAVIS_BRANCH !== 'false') {
              testname += ' (branch '+process.env.TRAVIS_BRANCH+')';
            }
            return testname;
          })(),
          tags: (function () {
            var tags = [];
            if (process.env.TRAVIS_PULL_REQUEST &&
                process.env.TRAVIS_PULL_REQUEST !== 'false') {
              tags.push('PR-'+process.env.TRAVIS_PULL_REQUEST);
            }
            if (process.env.TRAVIS_BRANCH &&
                process.env.TRAVIS_BRANCH !== 'false') {
              tags.push(process.env.TRAVIS_BRANCH);
            }
            return tags;
          })()
        }
      }
    },
    watch: {}
  });
  // Loading dependencies
  for (var key in grunt.file.readJSON("package.json").devDependencies) {
    if (key !== "grunt" && key.indexOf("grunt") === 0) {
      grunt.loadNpmTasks(key);
    }
  }
  grunt.registerTask("dev", ["connect", "watch"]);
  grunt.registerTask("sauce", ["connect", "saucelabs-mocha"]);
};