// code from json_server.js
Drupal.service = function(method, parameters, success) {
  if (!this.servicesClient) {
    return new Drupal.service(method, parameters, success);
  }
  parameters.method = method;
  parsed = this.parse(parameters);

  if (Drupal.Openquest.crossdomain) {
    this.ajaxc(parsed, success);
  } else {
    this.ajax(parsed, success);
  }
}

Drupal.service.prototype = {
  servicesClient: true,
  parse: function(parameters) {
    return $.param(this._parse([], [], parameters));
  },
  _parse: function(currentData, currentNesting, parameters) {
    for (index in parameters) {
      data = parameters[index];
      currentNesting.push(encodeURIComponent(index));
      if (typeof data == 'object') {
        currentData = this._parse(currentData, currentNesting, data);
      }
      else {
        currentData.push({name: this._makeURI(currentNesting), value: encodeURIComponent(data) });
      }
      currentNesting.pop();
    }
    return currentData;
  },
  _makeURI: function(data) {
    output = data.shift();
    for (i in data) {
      output += '['+ data[i] +']';
    }
    return output;
  },
  ajax: function(data, success) {
    $.ajax({
      url: Drupal.Openquest.services_url,
      type: "POST",
      data: data,
      success: function(result) {
        parsed = Drupal.parseJson(result);
        success(parsed['status'], parsed['data']);
      }
    });
  },
  ajaxc: function(data, success) {
    $.getJSON(Drupal.Openquest.services_url, data,
      function(result) {
        success(result.status, result.data);
    });
  }
};

// captcha
Drupal.attachCaptcha = function() {
  $('fieldset.captcha').each(function() {
    var form_id = '#' + $(this).parents('form').id();

    // transform fieldset into simple DIV
    $(this).children('legend').remove();
    $(this).replaceWith(
      '<div id="captcha-bg" style="display: none; position:absolute; z-index:4; background-color: #000000; filter:alpha(opacity=75); -moz-opacity:.75; opacity:.75;" />'+
      '<div id="captcha" style="display: none; position:absolute; z-index:5; color:#000000; width: 300px; padding: 20px; background-color: #FFFFFF; color: #000000">' +
      $(this).html() +
      '<input type="button" value="Validate" id="captcha-button" style="background-color: #cccccc; font: 12px Arial; border:1px solid #CCCCCC; color:#000000; width:auto; float:none; cursor:pointer;" /></div>');

    $(form_id + ' .form-submit').click(function() {
      // reset values
      $('#edit-captcha-pair-id').val('');
      $('#edit-captcha-answer').val('');

      // show captcha form
      $(form_id).css({
        position: 'relative',
        font: '12px Arial'
      });

      $('#captcha .form-item').css({
        float:'none',
        border: '0',
        backgroundColor: '#FFFFFF',
        padding: '0',
        margin: '0',
        width: 'auto'
      });

      $('#captcha .form-item label').css({
        float:'none',
        width: 'auto',
        color: '#000000',
        textAlign:'left'
      });

      $('#captcha .form-text').css({
        float:'none',
        width: 'auto',
        backgroundColor: '#FFFFFF',
        color: '#000000',
        border: '1px solid #000000'
      });

      $('#captcha .form-required').css({
        float:'none',
        color:'#000000'
      });

      $('#captcha .description').css({
        marginBottom:'15px',
        textAlign: 'center'
      });

      var _fw = $(form_id).width();
      var _fh = $(form_id).height();
      $('#captcha-bg').css({top: 0, left: 0, width: _fw, height: _fh}).fadeIn('slow');

      $('#captcha').css({
        top: (_fh / 2 - ($('#captcha').height() / 2)),
        left: (_fw / 2 - ($('#captcha').width() / 2))
      }).fadeIn('slow');

      return false;
    });

    // validate the captcha
    $('#captcha-button').click(function() {
      if ($('#edit-captcha-answer').val() == '') {
        alert('You must answer first!');
        return false;
      }

      // check captcha response
      $(this).attr({disabled: 'disabled', value: 'Validating...'});

      Drupal.service('captcha.validate', {
          captcha_id: $('#edit-captcha-id').val(),
          answer: $('#edit-captcha-answer').val(),
          nquestion: 1
        },
        function(status, data) {
          if (!status || data.message != '') {
            $('#captcha-button').attr({disabled: '', value: 'Validate'});
            if (!status) {
              alert('Service error! ' + data);
              return false;
            }
          }

          if (data.message != '') {
            alert(data.message);
            $('#edit-captcha-id').val(data.captcha.id);
            $('#captcha-question').attr('src', data.captcha.question);
          } else {
            $('#captcha-button').attr('value', "Submitting...");
            $('#edit-captcha-pair-id').val(data.pair_id);
            $('#edit-captcha-answer').val('Answer is correct!')
            $('#edit-captcha-answer').parents('form').get(0).submit();
          }
      });

      return false;
    });
  });
};

if (Drupal.jsEnabled) {
  Drupal.Openquest = {
    services_url: "http://services.openquest.pt/?q=services/json&jsoncallback=?",
    crossdomain: true
  };
  $(document).ready(function() {Drupal.attachCaptcha()});
};