fix(ui): correct imports, guard checks, logging and settings handling

apps/electron-backend/src/app/api/main.preload.ts

@@ -8,6 +8,10 @@ contextBridge.exposeInMainWorld('electron', {
     updatePlaylistFromFilePath: (filePath: string, title: string) =>
         ipcRenderer.invoke('update-playlist-from-file-path', filePath, title),
     openPlaylistFromFile: () => ipcRenderer.invoke('open-playlist-from-file'),
+    saveFileDialog: (defaultPath: string, filters?: { name: string; extensions: string[] }[]) =>
+        ipcRenderer.invoke('save-file-dialog', defaultPath, filters),
+    writeFile: (filePath: string, content: string) =>
+        ipcRenderer.invoke('write-file', filePath, content),
     setUserAgent: (userAgent: string, referer?: string) =>
         ipcRenderer.invoke('set-user-agent', userAgent, referer),
     openInMpv: (

apps/electron-backend/src/app/events/playlist.events.ts

@@ -7,7 +7,7 @@ import axios from 'axios';
 import { dialog, ipcMain } from 'electron';
 import { parse } from 'iptv-playlist-parser';
 import { createPlaylistObject, getFilenameFromUrl } from 'm3u-utils';
-import { readFile } from 'node:fs/promises';
+import { readFile, writeFile } from 'node:fs/promises';
 import { AUTO_UPDATE_PLAYLISTS } from 'shared-interfaces';
 
 export default class PlaylistEvents {
@@ -102,3 +102,33 @@ ipcMain.handle(AUTO_UPDATE_PLAYLISTS, async (event, playlistUrls) => {
         console.log(`Auto-updating playlist from ${url}`);
     }
 });
+
+ipcMain.handle('save-file-dialog', async (event, defaultPath, filters) => {
+    try {
+        const { canceled, filePath } = await dialog.showSaveDialog({
+            defaultPath,
+            filters: filters || [
+                { name: 'All Files', extensions: ['*'] },
+            ],
+        });
+
+        if (canceled || !filePath) {
+            return null;
+        }
+
+        return filePath;
+    } catch (error) {
+        console.error('Error showing save dialog:', error);
+        throw error;
+    }
+});
+
+ipcMain.handle('write-file', async (event, filePath, content) => {
+    try {
+        await writeFile(filePath, content, 'utf-8');
+        return { success: true };
+    } catch (error) {
+        console.error('Error writing file:', error);
+        throw error;
+    }
+});

apps/electron-backend/src/app/events/setttings.events.ts

@@ -1,6 +1,5 @@
 import { ipcMain } from 'electron';
 import {
-    MPV_PLAYER_PATH,
     MPV_REUSE_INSTANCE,
     store,
 } from '../services/store.service';
@@ -13,5 +12,9 @@ export default class SettingsEvents {
 
 ipcMain.handle('SETTINGS_UPDATE', (_event, arg) => {
     console.log('Received SETTINGS_UPDATE with data:', arg);
-    store.set(MPV_REUSE_INSTANCE, arg.mpvReuseInstance);
+    
+    // Only set values that are defined
+    if (arg.mpvReuseInstance !== undefined) {
+        store.set(MPV_REUSE_INSTANCE, arg.mpvReuseInstance);
+    }
 });