;(function() {
  'use strict';

  var connect = require('connect'),
      path = require('path'),
      request = require('request'),
      SauceTunnel = require('sauce-tunnel');

  var port = 8081,
      username = process.env.SAUCE_USERNAME,
      accessKey = process.env.SAUCE_ACCESS_KEY;

  var platforms = [
    ['Windows 7', 'chrome', ''],
    ['Windows 7', 'firefox', '25'],
    ['Windows 7', 'firefox', '20'],
    ['Windows 7', 'firefox', '10'],
    ['Windows 7', 'firefox', '6'],
    ['Windows 7', 'firefox', '4'],
    ['Windows 7', 'firefox', '3'],
    ['Windows 7', 'internet explorer', '10'],
    ['Windows 7', 'internet explorer', '9'],
    ['Windows 7', 'internet explorer', '8'],
    ['Windows XP', 'internet explorer', '7'],
    ['Windows XP', 'internet explorer', '6'],
    ['OS X 10.8', 'safari', '6'],
    ['Windows 7', 'safari', '5']
  ];

  // create a web server for the local dir
  var server = connect.createServer(
    connect.static(path.resolve(__dirname, '..'))
  ).listen(port);

  // set up sauce connect so we can use this server from saucelabs
  var tunnelTimeout = 10000,
      tunnel = new SauceTunnel(username, accessKey, null, true, tunnelTimeout);

  console.log('Opening sauce connect tunnel...');

  tunnel.start(function(success) {
    if (success) {
      console.log('Sauce connect tunnel opened');
      runTests();
    } else {
      console.error('Failed to open sauce connect tunnel')
      process.exit(2);
    }
  });

  function runTests() {
    var testDefinition = {
      'framework': 'qunit',
      'platforms': platforms,
      'url': 'http://localhost:' + port + '/test/index.html'
    };

    console.log('Starting saucelabs tests: ' + JSON.stringify(testDefinition));

    request.post('https://saucelabs.com/rest/v1/' + username + '/js-tests', {
      'auth': { 'user': username, 'pass': accessKey },
      'json': testDefinition
    }, function(error, response, body) {
      if (response.statusCode == 200) {
        var testIdentifier = body;
        waitForTestCompletion(testIdentifier);
      } else {
        console.error('Failed to submit test to SauceLabs, status ' + response.statusCode + ', body:\n' + JSON.stringify(body));
        process.exit(3);
      }
    });
  }

  function waitForTestCompletion(testIdentifier) {
    request.post('https://saucelabs.com/rest/v1/' + username + '/js-tests/status', {
      'auth': { 'user': username, 'pass': accessKey },
      'json': testIdentifier
    }, function(error, response, body) {
        if (response.statusCode == 200) {
          if (body.completed) {
            handleTestResults(body['js tests']);
          } else {
            waitForTestCompletion(testIdentifier);
          }
        } else {
          console.error('Failed to check test status on SauceLabs, status ' + response.statusCode + ', body:\n' + JSON.stringify(body));
          process.exit(4);
        }
    });
  }

  function handleTestResults(results) {
    var allTestsSuccessful = results.every(function(test) {
      return !test.result.failed;
    });

    if (allTestsSuccessful) {
      console.log('Tests passed');
    }
    else {
      var failingTests = results.filter(function(test) {
        return test.result.failed;
      });

      var failingPlatforms = failingTests.map(function(test) {
        return test.platform;
      });

      console.error('Tests failed on platforms: ' + JSON.stringify(failingPlatforms));

      failingTests.forEach(function(test) {
        var platform = JSON.stringify(test.platform);
        if (test.result.failed) {
          console.error(test.result.failed + ' failures on ' + platform + '. See ' + test.url + ' for details.');
        } else {
          console.error('Testing on ' + platform + ' failed; no results available. See ' + test.url + ' for details.');
        }
      });
    }

    console.log('Shutting down sauce connect tunnel...');

    tunnel.stop(function() {
      process.exit(allTestsSuccessful ? 0 : 1);
    });
  }
}());