/*global window:false, alert:false, jasmine:false, Node:false, */
/*jshint curly:false*/

'use strict';

var phantom = {};

if (window._phantom) {
  console.log = function(){
    phantom.sendMessage('console', Array.prototype.slice.apply(arguments).join(', '));
  };
}

phantom.sendMessage = function() {
  var args = [].slice.call( arguments );
  var payload = JSON.stringify( args );
  if (window._phantom) {
    // alerts are the communication bridge to grunt
    alert( payload );
  }
};

(function(){

  function PhantomReporter() {
    this.started = false;
    this.finished = false;
    this.suites_ = [];
    this.results_ = {};
    this.buffer = '';
  }

  PhantomReporter.prototype.jasmineStarted = function() {
    this.started = true;
    phantom.sendMessage('jasmine.jasmineStarted');
  };

  PhantomReporter.prototype.specStarted = function(specMetadata) {
    specMetadata.startTime = (new Date()).getTime();
    phantom.sendMessage('jasmine.specStarted', specMetadata);
  };

  PhantomReporter.prototype.suiteStarted = function(suiteMetadata) {
    suiteMetadata.startTime = (new Date()).getTime();
    phantom.sendMessage('jasmine.suiteStarted', suiteMetadata);
  };

  PhantomReporter.prototype.jasmineDone = function() {
    this.finished = true;
    phantom.sendMessage('jasmine.jasmineDone');
    phantom.sendMessage('jasmine.done.PhantomReporter');
  };

  PhantomReporter.prototype.suiteDone = function(suiteMetadata) {
    suiteMetadata.duration = (new Date()).getTime() - suiteMetadata.startTime;
    phantom.sendMessage('jasmine.suiteDone', suiteMetadata);
  };

  PhantomReporter.prototype.specDone = function(specMetadata) {
    specMetadata.duration = (new Date()).getTime() - specMetadata.startTime;
    this.results_[specMetadata.id] = specMetadata;

    // Quick hack to alleviate cyclical object breaking JSONification.
    for (var ii = 0; ii < specMetadata.failedExpectations.length; ii++) {
      var item = specMetadata.failedExpectations[ii];
      if (item.expected) {
        item.expected = stringify(item.expected);
      }
      if (item.actual) {
        item.actual = stringify(item.actual);
      }
    }

    phantom.sendMessage( 'jasmine.specDone', specMetadata);
  };

  function stringify(obj) {
    if (typeof obj !== 'object') return obj;

    var cache = [], keyMap = [], index;

    var string = JSON.stringify(obj, function(key, value) {
      // Let json stringify falsy values
      if (!value) return value;

      try {
        // If we're a node
        if (typeof(Node) !== 'undefined' && value instanceof Node) return '[ Node ]';

        // jasmine-given has expectations on Specs. We intercept to return a
        // String to avoid stringifying the entire Jasmine environment, which
        // results in exponential string growth
        if (value instanceof jasmine.Spec) return '[ Spec: ' + value.description + ' ]';

        // If we're a window (logic stolen from jQuery)
        if (value.window && value.window === value.window.window) return '[ Window ]';

        // Simple function reporting
        if (typeof value === 'function') return '[ Function ]';

        if (typeof value === 'object' && value !== null) {

          if (index = cache.indexOf(value) !== -1) {
            // If we have it in cache, report the circle with the key we first found it in
            return '[ Circular {' + (keyMap[index] || 'root') + '} ]';
          }
          cache.push(value);
          keyMap.push(key);
        }
      } catch (e) {
          return "[Object]";
      }
      return value;
    });
    return string;
  }

  jasmine.getEnv().addReporter( new PhantomReporter() );
}());