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/*
   @author: con_mame
   @url: http://d.hatena.ne.jp/con_mame/
   @title: Nico DL
   @description: Download Movie File from NicoNico Douga
   @version: 0.2
*/

(function(){

   const ICON = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAG5JREFUOE+tU+0OABAI5Jl6/2dDtjNaJR+34UdcXZdcGtILmAAgosLLghZP2mV50SNWCaIVdfm8IcPpuRCYwo0AejUq+ELgOSATXFeAh9cEs0PbJnr+byuQln7rgSnhdIgWCZjG6CzMdrt/IUJYAffFJ2uA33mhAAAAAElFTkSuQmCC";

   function getFlv(videoAddr){
	  try{
		 var Cc = jetpack.tabs[0].raw.ownerDocument.defaultView.Cc;
		 var Ci = jetpack.tabs[0].raw.ownerDocument.defaultView.Ci;
		 var saveFile = Cc['@mozilla.org/filepicker;1'].createInstance(Ci.nsIFilePicker);
		 saveFile.init(jetpack.tabs.focused.contentWindow, "Save Nico Vide", Ci.nsIFilePicker.modeSave);
		 saveFile.defaultExtension = "flv";
		 saveFile.appendFilters(Ci.nsIFilePicker.filterAll);

		 var ret = saveFile.show();
		 if(ret == Ci.nsIFilePicker.returnCancel) return;
		 var ios = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
		 var url = ios.newURI(videoAddr, null, null);

		 var iwp = Cc['@mozilla.org/embedding/browser/nsWebBrowserPersist;1'].createInstance(Ci.nsIWebBrowserPersist);
		 var trans = Cc["@mozilla.org/transfer;1"].createInstance(Ci.nsITransfer);
		 trans.init(url, saveFile.fileURL, videoAddr, null, null, null, iwp);
		 iwp.progressListener = trans;
		 iwp.saveURI(url, null, null, null, null, saveFile.file);
	  }catch(e){
		 console.log(e);
	  }
   }

   function showMessege(title, message){
	  jetpack.notifications.show({
		 title: title,
		 body: message,
		 icon: ICON
	  });
   }

   function doDownload(videoId){
	  $.ajax({
		 type: "GET",
		 url: "http://www.nicovideo.jp/api/getflv/" + videoId,
		 cache: false,
		 success: function(info){
			if(/&url=(.+?)&/.test(decodeURIComponent(info))){
			   getFlv(RegExp.$1);
			}else{
			   showMessege("Error", "Check Login");
			}
		 },
		 error: function(xtr, status, thrown){
			showMessege("Error", status);
		 }
	  });
   }

   jetpack.statusBar.append({
	  html: <>
		 <div id="dl"><img src={ICON}/>DL!</div>
	  </>,
	  onReady: function(doc){
		 $(doc).click(function(){
			var watchPage = jetpack.tabs.focused.url;
			if(/http:\/\/www.nicovideo.jp\/watch\/(.+)$/.test(watchPage)){
			   doDownload(RegExp.$1);
			}else{
			   return;
			}
		 });
		 $("#dl", doc).css({
			position: "absolute",
			paddingTop: "5px",
			fontSize: "12pt",
			fontWeight: "bold",
			cursor: "pointer"
		 });
	  },
	  width: 50
   });
})()