var XOFieaturedImageTool;

(function($) {
  XOFieaturedImageTool = function(parameters) {
    var self = this;
    var total_count = parameters.post_ids.length;
    var counter = 0;
    var successes_counter = 0;
    var error_counter = 0;
    var abort_flag = false;

    this.sprintf = function() {
      var _arg = $.makeArray(arguments), template = _arg.shift(), i;
      for(i in _arg){
          template = template.replace('%s', _arg[i]);
      }
      return template;
    };

    this.updateStatus = function(response) {
      counter++;
      $("#xo-featured-image-bar").progressbar("value", (counter / total_count) * 100);
      $("#xo-featured-image-bar-percent").html(Math.round((counter / total_count) * 100) + "%");
      if (response.success) {
        successes_counter++;
        $("#xo-featured-image-success-count").html(successes_counter);
        // $("#xo-featured-image-msg").append("<li>" + response.success + "</li>");
      } else {
        error_counter++;
        $("#xo-featured-image-error-count").html(error_counter);
        $("#xo-featured-image-msg").append("<li>" + response.error + "</li>");
      }
    };

    this.finalization = function() {
      var msg = '';
      $('#xo-featured-image-stop-bottun').hide();
      if (error_counter > 0) {
        msg = this.sprintf(parameters.failure_message, error_counter);
      } else {
        msg = parameters.success_message;
      }
      $("#xo-featured-image-message").hide();
      $("#message").html("<p><strong>" + msg + "</strong></p>");
      $("#message").show();
    };

    this.init = function(id) {
      $("#xo-featured-image-bar").progressbar();
      $("#xo-featured-image-bar-percent").html("0%");

      $("#xo-featured-image-stop-bottun").click(function (btn) {
        abort_flag = true;
        $('#xo-featured-image-stop-bottun').prop("disabled", true);
        $('#xo-featured-image-stop-bottun').val(parameters.stop_button_message);
      });
    };

    this.start = function(id) {
      $.ajax({
        type: 'POST',
        url: ajaxurl,
        data: { action: 'xo_featured_image_tools', id: id, 'external_image': parameters.external_image, 'default_image': parameters.default_image },
        success: function (response) {
          if (response !== Object(response) || (typeof response.success === 'undefined' && typeof response.error === 'undefined')) {
            response = new Object;
            response.success = false;
            response.error = "Fatal error.";
          }
          self.updateStatus(response);
          if (parameters.post_ids.length && !abort_flag) {
            self.start(parameters.post_ids.shift());
          } else {
            self.finalization();
          }
        },
        error: function (response) {
          self.updateStatus(response);
          if (parameters.post_ids.length && !abort_flag) {
            self.start(parameters.post_ids.shift());
          } else {
            self.finalization();
          }
        }
      });
    };
    
    this.init();
    this.start(parameters.post_ids.shift());
  };
}(jQuery));