From b54b3cbe6957b46d3b689b0108b0b767b7da261b Mon Sep 17 00:00:00 2001
From: Wu Cheng-Han
Date: Mon, 10 Oct 2016 20:48:56 +0800
Subject: Add more comments in the code and remove unused code file

---
 lib/realtime.js     |  3 +++
 public/js/unused.js | 45 ---------------------------------------------
 2 files changed, 3 insertions(+), 45 deletions(-)
 delete mode 100644 public/js/unused.js

diff --git a/lib/realtime.js b/lib/realtime.js
index ae624c24..c9c6543c 100644
--- a/lib/realtime.js
+++ b/lib/realtime.js
@@ -518,13 +518,16 @@ function disconnect(socket) {
 	var noteId = socket.noteId;
     var note = notes[noteId];
     if (note) {
+        // delete user in users
         delete note.users[socket.id];
+        // remove sockets in the note socks
         do {
             var index = note.socks.indexOf(socket);
             if (index != -1) {
                 note.socks.splice(index, 1);
             }
         } while (index != -1);
+        // remove note in notes if no user inside
         if (Object.keys(note.users).length <= 0) {
             if (note.server.isDirty) {
                 updateNote(note, function (err, _note) {
diff --git a/public/js/unused.js b/public/js/unused.js
deleted file mode 100644
index 4ff5b280..00000000
--- a/public/js/unused.js
+++ /dev/null
@@ -1,45 +0,0 @@
-
-    //parse Youtube
-    result.find(".youtube").each(function (key, value) {
-        if (!$(value).attr('videoid')) return;
-        setSizebyAttr(this, this);
-        var icon = '<i class="icon fa fa-youtube-play fa-5x"></i>';
-        $(this).append(icon);
-        var videoid = $(value).attr('videoid');
-        var thumbnail_src = '//img.youtube.com/vi/' + videoid + '/hqdefault.jpg';
-        $(value).css('background-image', 'url(' + thumbnail_src + ')');
-        $(this).click(function () {
-            imgPlayiframe(this, '//www.youtube.com/embed/');
-        });
-    });
-    //parse vimeo
-    result.find(".vimeo").each(function (key, value) {
-        if (!$(value).attr('videoid')) return;
-        setSizebyAttr(this, this);
-        var icon = '<i class="icon fa fa-vimeo-square fa-5x"></i>';
-        $(this).append(icon);
-        var videoid = $(value).attr('videoid');
-        $.ajax({
-            type: 'GET',
-            url: 'http://vimeo.com/api/v2/video/' + videoid + '.json',
-            jsonp: 'callback',
-            dataType: 'jsonp',
-            success: function (data) {
-                var thumbnail_src = data[0].thumbnail_large;
-                $(value).css('background-image', 'url(' + thumbnail_src + ')');
-            }
-        });
-        $(this).click(function () {
-            imgPlayiframe(this, '//player.vimeo.com/video/');
-        });
-    });
-    //todo list
-    var lis = result[0].getElementsByTagName('li');
-    for (var i = 0; i < lis.length; i++) {
-        var html = lis[i].innerHTML;
-        if (/^\s*\[[x ]\]\s*/.test(html)) {
-            lis[i].innerHTML = html.replace(/^\s*\[ \]\s*/, '<input type="checkbox" class="task-list-item-checkbox" disabled>')
-                .replace(/^\s*\[x\]\s*/, '<input type="checkbox" class="task-list-item-checkbox" checked disabled>');
-            lis[i].setAttribute('class', 'task-list-item');
-        }
-    }
\ No newline at end of file
-- 
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