define([
  'mailpoet',
  'jquery',
  'parsleyjs'
],
function(
  MailPoet,
  jQuery,
  Parsley
) {
  jQuery(function($) {
    function isSameDomain(url) {
      var link = document.createElement('a');
      link.href = url;
      return (window.location.hostname === link.hostname);
    }

    $(function() {
      // setup form validation
      $('form.mailpoet_form').each(function() {
        var form = $(this);

        form.parsley({
          errorsWrapper: '<p></p>',
          errorTemplate: '<span></span>'
        }).on('form:submit', function(parsley) {

          var data = form.serializeObject() || {};

          // clear messages
          form.find('.mailpoet_message').html('');

          // check if we're on the same domain
          if(isSameDomain(MailPoetForm.ajax_url) === false) {
            // non ajax post request
            return true;
          } else {
            // ajax request
            MailPoet.Ajax.post({
              url: MailPoetForm.ajax_url,
              token: MailPoetForm.token,
              endpoint: 'subscribers',
              action: 'subscribe',
              data: data
            }).done(function(response) {
              if(response.result !== true) {
                // errors
                $.each(response.errors, function(index, error) {
                  form
                    .find('.mailpoet_message')
                    .append('<p class="mailpoet_validate_error">'+
                      error+
                    '</p>');
                });
              } else {
                // successfully subscribed
                if(response.page !== undefined) {
                  // go to page
                  window.location.href = response.page;
                } else if(response.message !== undefined) {
                  // display success message
                  form
                    .find('.mailpoet_message')
                    .html('<p class="mailpoet_validate_success">'+
                      response.message+
                    '</p>');
                }

                // reset form
                form.trigger('reset');
                // reset validation
                parsley.reset();
              }
            });
          }
          return false;
        });
      });
    });
  });
});