/*  quran jetpack script
 *  --------------------
 *  a jetpack script which introduces a context menu that allows replacing
 *  instances of sura:ayah in textareas with the actual ayah text from the
 *  quran.  tested under jetpack 0.6.2.
 *
 *  http://whatstheplot.com/blog/2009/11/16/quran-jetpack-script/
 */

jetpack.future.import("menu");
jetpack.future.import("selection");

function getAyah(textarea, lang){
   var sel = textarea.value.substring(textarea.selectionStart,
                                      textarea.selectionEnd);
   var res = /^(\d+):(\d+)$/.exec(sel);
   if (res != null){
      var sura = res[1];
      var ayah = res[2];
   }
   else return;

   var resultText = '';
   var url = "http://alpha.api.searchquran.net/v1/sura/" + sura + "/" + ayah;
   var params = {langs: lang};
   jQuery.getJSON(url, params, function(data){
      var start = textarea.value.substring(0, textarea.selectionStart);
      var end = textarea.value.substring(textarea.selectionEnd);
	  
	  // just in case, validate that what is selected is what we just got
      var mid = textarea.value.substring(textarea.selectionStart,
	                                     textarea.selectionEnd);
      var origUrl = url.substring(url.indexOf('sura/') + 5);
      if (origUrl == (mid.replace(":", '/'))){
         jQuery.each(data.verses, function(i, item){
            resultText += item[lang];
         });
         textarea.value = start + resultText +
                          " (" + sura + ":" + ayah + ")" + end;
      }
      else jetpack.notifications.show("please try again...");
   });
   return;
}

jetpack.menu.context.page.on("textarea").beforeShow =
  function (menu, context) {
    var textarea = context.node;
    var sel = textarea.value.substring(textarea.selectionStart,
                                       textarea.selectionEnd);
    if (sel){
      var res = /^(\d+):(\d+)$/g.exec(sel);
      if (res != null){
         menu.reset();
         menu.add({
            label: "Get this Ayah",
			icon: "http://whatstheplot.com/misc/quran.jetpack/favicon.ico",
            menu: new jetpack.Menu([
               { label: "Arabic [no Tashkeel]", data: 4 },
               { label: "Arabic", data: 2 },
               { label: "Transliteration", data: 128 },
               { label: "Sahih International", data: 256 },
               { label: "Muhsin Khan", data: 8 }
            ]),
            command: function (menuitem){
               getAyah(textarea, menuitem.data);
            }
         });
      }
    }
    else menu.reset();
};