music: support urls if they dont have extensions based on content type

src/modules/music.js

@@ -215,7 +215,7 @@ async function enqueue(
       highWaterMark: 1 << 25,
     });
   } else if (type == "sc") {
-    if (url.startsWith("sc:"))
+    if (url?.startsWith("sc:"))
       url = url.replace(/^sc:/, "https://soundcloud.com/");
     const client_id = await getSoundcloudClientID();
 
@@ -537,21 +537,46 @@ command.callback = async function (msg, line) {
               queueNext
             );
           }
+        } else {
+          if (argStr.match(/https?:\/\//)) {
+            const contentType = await fetch(argStr).then((res) =>
+              res.headers.get("Content-Type")
+            );
+            if (
+              contentType.startsWith("audio/") ||
+              contentType.startsWith("video/")
+            ) {
+              await enqueue(
+                msg.guildID,
+                msg.member.voiceState.channelID,
+                msg.channel.id,
+                argStr,
+                "file",
+                msg.author.id,
+                false,
+                queueNext
+              );
+            } else {
+              return "Unsupported content type.";
+            }
           } else {
             const url = await youtubeSearch(msg, argStr);
-          if (url.startsWith("https://youtu.be/")) {
+            if (url?.startsWith("https://youtu.be/")) {
               await enqueue(
                 msg.guildID,
                 msg.member.voiceState.channelID,
                 msg.channel.id,
                 url,
                 "yt",
-              msg.author.id
+                msg.author.id,
+                false,
+                queueNext
               );
             } else {
               return url;
             }
           }
+        }
       } else {
         return "You are not in a voice channel.";
       }