var EmailMessages = {

   attachmentSelector: '[data-attachment]',

   attachmentTypes: null,
   attachmentUrls: null,

   getAttachmentUrl: function(type) {
      return this.attachmentUrls[type];
   },

   getAttachmentName: function(type) {
      return this.attachmentTypes[type];
   },

   getServerSidePlaceholders: function() {
      return [
         'KOD', 'STAV', 'CENA', 'ZAPLATIT', 'ODKAZ', 'ODKAZ_PLATBA', 'DATUM', 'CAS', 'POLOZKY_OBJEDNAVKY',
         'POPIS_ZPUSOBU_DORUCENI', 'POPIS_PLATBY', 'POPIS_DOPRAVY', 'QR_PLATBA', 'POUKAZY', 'KOD_VRATKY',
         'ODKAZ_VRATKY', 'ODKAZ_VRATKA','VRATKA_INSTRUKCE', 'KOD_REKLAMACE', 'ODKAZ_REKLAMACE', 'REKLAMACE_INSTRUKCE',
         'ZPUSOB_VYRIZENI', 'ODKAZ_OBJEDNAVKA', 'KOD_OBJEDNAVKY', 'CISLO_UCTU', 'PACKAGE_LABEL', 'POSUDEK',
         'FAKTURACNI_ADRESA', 'DODACI_ADRESA', 'ODKAZ_PDF', 'DATUM_SPLATNOSTI', 'ODKAZ_FAKTURA', 'WEB',
         'ODKAZ_SLEDOVANI_BALIKU', 'BALIKY', 'POLOZKY_EXCEL', 'DATUM_OBJEDNAVKY', 'CAS_OBJEDNAVKY'
         // Nedávej sem BALIK_ID, logika je uvnitř replacePlaceholders.
      ];
   },

   findPlaceholders: function(message) {
      var symbols = message.match(/\{[^}]+\}/g);
      var symbol_set = [];
      for (var i in symbols) {
         var re = /([^{:}]+)(}|:([^{:}]+))/;
         var parts = re.exec(symbols[i]);
         if (parts == null) {
            continue;
         }

         if (symbol_set[parts[1]]) {
            continue;
         }

         symbol_set[parts[1]] = { 'orig': symbols[i], 'default': parts[3] ? parts[3] : '' };
      }

      return symbol_set;
   },

   replacePlaceholders: function(message, balik_id) {

      var placeholders = this.findPlaceholders(message);

      for (var i in placeholders) {
         if(i[0] === '!'){
            message = message.replace(i, i.replace("!", ""))
            continue;
         }
         if (this.getServerSidePlaceholders().indexOf(i) >= 0) {
            continue;
         }

         if ((i == 'BALIK_ID') && (balik_id)) {
            continue;
         }

         var value = window.prompt(i, placeholders[i]['default']);

         gtag('event', 'select_content', {
            'content_type': 'placeholder',
            'content_id': i
         });

         if (value == null) {
            return;
         }

         message = message.replace(new RegExp(placeholders[i]['orig'], 'g'), value);
      }

      return message;
   },

   renderAttachments: function(attachments) {
      var $attachment = $(this.attachmentSelector),
          me = this;

      if (attachments) {
         attachments = JSON.parse(attachments);
         attachments = attachments.map(function(type) {
            if (me.attachmentUrls !== null) {
               return '<a href="' + me.getAttachmentUrl(type) + '" target="_blank">' + me.getAttachmentName(type) + '</a>';
            }

            return me.getAttachmentName(type);
         });
         $attachment.html('<i class="glyphicon glyphicon-paperclip m-r-1"></i>Přílohy: ' + attachments.join(', ')).show();
      } else {
         $attachment.html('').hide();
      }
   }

};