From 68ba1190a040d8dbf00415341391eebd3addfe8c Mon Sep 17 00:00:00 2001
From: riku1227 <17927874+riku1227@users.noreply.github.com>
Date: Tue, 16 Jun 2020 15:30:45 +0900
Subject: [PATCH] Add swap queue

---
 index.html | 20 ++++++++++++++++++--
 server.js  | 31 +++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index f0a47f1..bb7e5cb 100644
--- a/index.html
+++ b/index.html
@@ -584,8 +584,17 @@ <h2>Contact Me</h2>
                 var html = ''
                 if (yt.length > 0) {
                     for (i = 0; i < yt.length; i++) {
-                        html += '<li class="vid-item"><div class="thumb"><a href="javascript: removeAt(' + i + ')" class="ghost-button-full-color"><i class="far fa-times-circle"></i></a><a href="javascript: playAt(' + i +
-                            ')"><img src="http://img.youtube.com/vi/' + yt[i].videoId + '/0.jpg"></a></div><a href="javascript: playAt(' + i + ')" class="desc">' + yt[i].title + '</a></li>'
+                        html += '<li class="vid-item">'+
+                            '<div class="thumb">'+
+                                '<a href="javascript: removeAt(' + i + ')" class="ghost-button-full-color"><i class="far fa-times-circle"></i></a>'+
+                                '<a href="javascript: swapQueue(' + (i + 1) + ',' + i + ')" class="ghost-button-full-color" style="margin-right: 8px;"><i class="fas fa-arrow-right"></i></a>'+
+                                '<a href="javascript: swapQueue(' + (i - 1) + ',' + i + ')" class="ghost-button-full-color"><i class="fas fa-arrow-left"></i></a>'+
+                                '<a href="javascript: playAt(' + i + ')">'+
+                                    '<img src="http://img.youtube.com/vi/' + yt[i].videoId + '/0.jpg">'+
+                                '</a>'+
+                            '</div>'+
+                            '<a href="javascript: playAt(' + i + ')" class="desc">' + yt[i].title + '</a>'+
+                            '</li>'
                     }
                 } else {
                     html += '<li class="vid-item"></li>'
@@ -643,6 +652,13 @@ <h2>Contact Me</h2>
             })
         }
 
+        function swapQueue(prevIdx, nextIdx) {
+            socket.emit("swap queue", {
+                prev: prevIdx,
+                next: nextIdx
+            });
+        }
+
 
         // Turn off the lights!
         var per = 0;
diff --git a/server.js b/server.js
index f596de3..36488dc 100644
--- a/server.js
+++ b/server.js
@@ -925,6 +925,37 @@ io.sockets.on('connection', function(socket) {
         );
     });
 
+    //Swap queue
+    socket.on("swap queue", function(data) {
+        if (io.sockets.adapter.rooms['room-' + socket.roomnum] !== undefined) {
+            //Queue is only supported YouTube
+            if(io.sockets.adapter.rooms['room-' + socket.roomnum].currPlayer == 0) {
+                var prevIndex = data.prev;
+                var nextIndex = data.next;
+
+                console.log("swap queue (prev: " + prevIndex + ", next: " + nextIndex + ")");
+
+                //Return when array index out of bounds
+                var queueCount = io.sockets.adapter.rooms['room-' + socket.roomnum].queue.yt.length;
+                if(prevIndex == -1 || nextIndex == -1) {
+                    return;
+                } else if (prevIndex >= queueCount || nextIndex >= queueCount) {
+                    return;
+                }
+
+                //Get swap objects
+                var prevObject = io.sockets.adapter.rooms['room-' + socket.roomnum].queue.yt[prevIndex];
+                var nextObject = io.sockets.adapter.rooms['room-' + socket.roomnum].queue.yt[nextIndex];
+
+                //Swap
+                io.sockets.adapter.rooms['room-' + socket.roomnum].queue.yt[prevIndex] = nextObject;
+                io.sockets.adapter.rooms['room-' + socket.roomnum].queue.yt[nextIndex] = prevObject;
+
+                updateQueueVideos();
+            }
+        }
+    });
+
 
     // Some update functions --------------------------------------------------
     // Update all users