feat: backend integration of playlist m3u text

backend/services/ChannelService.js

@@ -30,11 +30,10 @@ class ChannelService {
     }
 
     addChannel({ name, url, avatar, mode, headersJson, group = null, playlist = null, playlistName = null }) {
-        const existing = this.channels.find(channel => channel.url === url);
-
-        if (existing) {
-            throw new Error('Channel already exists');
-        }
+        // const existing = this.channels.find(channel => channel.url === url);
+        // if (existing) {
+        //     throw new Error('Channel already exists');
+        // }
 
         const headers = JSON.parse(headersJson);
         const newChannel = new Channel(name, url, avatar, mode, headers, group, playlist, playlistName);

backend/services/ChannelStorage.js

@@ -41,7 +41,7 @@ module.exports = {
                 return channelsJson.map(channelJson => Channel.from(channelJson));
             } catch (err) {
                 console.error('Error loading data from storage:', err);
-                return [];
+                return channels;
             }
         }
         this.save(channels);

backend/services/PlaylistService.js

@@ -3,12 +3,17 @@ const ChannelService = require('./ChannelService');
 
 class PlaylistService {
 
-    async addPlaylist(playlistUrl, playlistName, mode, headersJson) {
+    async addPlaylist(playlist, playlistName, mode, headersJson) {
 
-        console.log('Adding playlist', playlistUrl);
+        console.log('Adding playlist', playlist);
 
-        const response = await fetch(playlistUrl);
-        const content = await response.text();
+        let content = "";
+        if(playlist.startsWith("http")) {
+            const response = await fetch(playlist);
+            content = await response.text();
+        } else {
+            content = playlist;
+        }
 
         const parsedPlaylist = m3uParser.parse(content);
 
@@ -23,7 +28,7 @@ class PlaylistService {
                     mode: mode,
                     headersJson: headersJson,
                     group: channel.group.title,
-                    playlist: playlistUrl,
+                    playlist: playlist,
                     playlistName: playlistName
                 });
             } catch (error) {