Add playlist and favorites commands, update sidebar

Backend:
- Add playlist.rs commands: get_user_playlists, get_playlist, search_playlists
- Add favorites.rs commands: get_favorites, add_favorite, remove_favorite
- Add API client methods: search_playlists, add_favorite, remove_favorite

Frontend:
- Remove Radio and New from sidebar (no API support)
- Sidebar now loads and displays user playlists dynamically
- Add playlist and favorites views (placeholder for now)
- Pass selectedPlaylistId and onPlaylistSelect to Sidebar

src-tauri/src/api/client.rs

@@ -424,6 +424,68 @@ impl QobuzClient {
 
         Ok(serde_json::from_value(playlists.clone())?)
     }
+
+    /// Search playlists
+    pub async fn search_playlists(&self, query: &str, limit: u32) -> Result<SearchResultsPage<Playlist>> {
+        let url = endpoints::build_url(paths::PLAYLIST_SEARCH);
+        let response: Value = self
+            .http
+            .get(&url)
+            .header("X-App-Id", self.app_id().await?)
+            .query(&[("query", query), ("limit", &limit.to_string())])
+            .send()
+            .await?
+            .json()
+            .await?;
+
+        let playlists = response
+            .get("playlists")
+            .ok_or_else(|| ApiError::ApiResponse("No playlists in response".to_string()))?;
+
+        Ok(serde_json::from_value(playlists.clone())?)
+    }
+
+    /// Add item to favorites
+    pub async fn add_favorite(&self, fav_type: &str, item_id: &str) -> Result<()> {
+        let url = endpoints::build_url(paths::FAVORITE_CREATE);
+        let type_key = format!("{}_ids", fav_type); // album_ids, track_ids, artist_ids
+
+        let response = self
+            .http
+            .get(&url)
+            .header("X-App-Id", self.app_id().await?)
+            .header("X-User-Auth-Token", self.auth_token().await?)
+            .query(&[(&type_key, item_id)])
+            .send()
+            .await?;
+
+        if response.status().is_success() {
+            Ok(())
+        } else {
+            Err(ApiError::ApiResponse(format!("Failed to add favorite: {}", response.status())))
+        }
+    }
+
+    /// Remove item from favorites
+    pub async fn remove_favorite(&self, fav_type: &str, item_id: &str) -> Result<()> {
+        let url = endpoints::build_url(paths::FAVORITE_DELETE);
+        let type_key = format!("{}_ids", fav_type);
+
+        let response = self
+            .http
+            .get(&url)
+            .header("X-App-Id", self.app_id().await?)
+            .header("X-User-Auth-Token", self.auth_token().await?)
+            .query(&[(&type_key, item_id)])
+            .send()
+            .await?;
+
+        if response.status().is_success() {
+            Ok(())
+        } else {
+            Err(ApiError::ApiResponse(format!("Failed to remove favorite: {}", response.status())))
+        }
+    }
 }
 
 impl Default for QobuzClient {

src-tauri/src/commands/favorites.rs

@@ -0,0 +1,59 @@
+//! Favorites-related Tauri commands
+
+use serde_json::Value;
+use tauri::State;
+use tokio::sync::Mutex;
+
+use crate::api::client::QobuzClient;
+
+/// Get user's favorites
+/// fav_type can be: "albums", "tracks", or "artists"
+#[tauri::command]
+pub async fn get_favorites(
+    fav_type: String,
+    limit: Option<u32>,
+    offset: Option<u32>,
+    client: State<'_, std::sync::Arc<Mutex<QobuzClient>>>,
+) -> Result<Value, String> {
+    log::info!("Command: get_favorites type={} limit={:?} offset={:?}", fav_type, limit, offset);
+
+    let client = client.lock().await;
+    client
+        .get_favorites(&fav_type, limit.unwrap_or(50), offset.unwrap_or(0))
+        .await
+        .map_err(|e| format!("Failed to get favorites: {}", e))
+}
+
+/// Add item to favorites
+/// fav_type can be: "album", "track", or "artist"
+#[tauri::command]
+pub async fn add_favorite(
+    fav_type: String,
+    item_id: String,
+    client: State<'_, std::sync::Arc<Mutex<QobuzClient>>>,
+) -> Result<(), String> {
+    log::info!("Command: add_favorite type={} id={}", fav_type, item_id);
+
+    let client = client.lock().await;
+    client
+        .add_favorite(&fav_type, &item_id)
+        .await
+        .map_err(|e| format!("Failed to add favorite: {}", e))
+}
+
+/// Remove item from favorites
+/// fav_type can be: "album", "track", or "artist"
+#[tauri::command]
+pub async fn remove_favorite(
+    fav_type: String,
+    item_id: String,
+    client: State<'_, std::sync::Arc<Mutex<QobuzClient>>>,
+) -> Result<(), String> {
+    log::info!("Command: remove_favorite type={} id={}", fav_type, item_id);
+
+    let client = client.lock().await;
+    client
+        .remove_favorite(&fav_type, &item_id)
+        .await
+        .map_err(|e| format!("Failed to remove favorite: {}", e))
+}

src-tauri/src/commands/mod.rs

@@ -3,11 +3,15 @@
 //! Exposes backend functionality to the frontend via IPC
 
 pub mod auth;
+pub mod favorites;
 pub mod playback;
+pub mod playlist;
 pub mod queue;
 pub mod search;
 
 pub use auth::*;
+pub use favorites::*;
 pub use playback::*;
+pub use playlist::*;
 pub use queue::*;
 pub use search::*;

src-tauri/src/commands/playlist.rs

@@ -0,0 +1,52 @@
+//! Playlist-related Tauri commands
+
+use tauri::State;
+use tokio::sync::Mutex;
+
+use crate::api::client::QobuzClient;
+use crate::api::models::{Playlist, SearchResultsPage};
+
+/// Get user's playlists
+#[tauri::command]
+pub async fn get_user_playlists(
+    client: State<'_, std::sync::Arc<Mutex<QobuzClient>>>,
+) -> Result<Vec<Playlist>, String> {
+    log::info!("Command: get_user_playlists");
+
+    let client = client.lock().await;
+    client
+        .get_user_playlists()
+        .await
+        .map_err(|e| format!("Failed to get user playlists: {}", e))
+}
+
+/// Get a specific playlist by ID
+#[tauri::command]
+pub async fn get_playlist(
+    playlist_id: u64,
+    client: State<'_, std::sync::Arc<Mutex<QobuzClient>>>,
+) -> Result<Playlist, String> {
+    log::info!("Command: get_playlist {}", playlist_id);
+
+    let client = client.lock().await;
+    client
+        .get_playlist(playlist_id)
+        .await
+        .map_err(|e| format!("Failed to get playlist: {}", e))
+}
+
+/// Search playlists
+#[tauri::command]
+pub async fn search_playlists(
+    query: String,
+    limit: Option<u32>,
+    client: State<'_, std::sync::Arc<Mutex<QobuzClient>>>,
+) -> Result<SearchResultsPage<Playlist>, String> {
+    log::info!("Command: search_playlists \"{}\"", query);
+
+    let client = client.lock().await;
+    client
+        .search_playlists(&query, limit.unwrap_or(20))
+        .await
+        .map_err(|e| format!("Failed to search playlists: {}", e))
+}

src-tauri/src/lib.rs

@@ -116,6 +116,14 @@ pub fn run() {
             commands::set_repeat,
             commands::get_repeat,
             commands::get_queue_state,
+            // Playlist commands
+            commands::get_user_playlists,
+            commands::get_playlist,
+            commands::search_playlists,
+            // Favorites commands
+            commands::get_favorites,
+            commands::add_favorite,
+            commands::remove_favorite,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");

src/lib/components/Sidebar.svelte

@@ -1,24 +1,65 @@
 <script lang="ts">
-  import { Search, Home, Radio, Clock, Music, Disc3, Mic2, Plus, MoreVertical, ChevronDown, Heart } from 'lucide-svelte';
+  import { Search, Home, Clock, Music, Disc3, Mic2, Plus, MoreVertical, ChevronDown, Heart, ListMusic } from 'lucide-svelte';
+  import { invoke } from '@tauri-apps/api/core';
+  import { onMount } from 'svelte';
   import NavigationItem from './NavigationItem.svelte';
   import UserCard from './UserCard.svelte';
 
+  interface Playlist {
+    id: number;
+    name: string;
+    tracks_count: number;
+  }
+
   interface Props {
     activeView: string;
+    selectedPlaylistId?: number | null;
     onNavigate: (view: string) => void;
+    onPlaylistSelect?: (playlistId: number) => void;
     onSettingsClick?: () => void;
     onLogout?: () => void;
     userName?: string;
     subscription?: string;
   }
 
-  let { activeView, onNavigate, onSettingsClick, onLogout, userName = 'User', subscription = 'Qobuz' }: Props = $props();
+  let {
+    activeView,
+    selectedPlaylistId = null,
+    onNavigate,
+    onPlaylistSelect,
+    onSettingsClick,
+    onLogout,
+    userName = 'User',
+    subscription = 'Qobuz'
+  }: Props = $props();
+
+  let userPlaylists = $state<Playlist[]>([]);
+  let playlistsLoading = $state(false);
+
+  onMount(() => {
+    loadUserPlaylists();
+  });
+
+  async function loadUserPlaylists() {
+    playlistsLoading = true;
+    try {
+      const playlists = await invoke<Playlist[]>('get_user_playlists');
+      userPlaylists = playlists;
+    } catch (err) {
+      console.error('Failed to load playlists:', err);
+    } finally {
+      playlistsLoading = false;
+    }
+  }
 
   function handleViewChange(view: string) {
-    console.log('Sidebar: handleViewChange called with view:', view);
-    console.log('Sidebar: onNavigate function exists:', !!onNavigate);
     onNavigate(view);
-    console.log('Sidebar: onNavigate called');
+  }
+
+  function handlePlaylistClick(playlist: Playlist) {
+    if (onPlaylistSelect) {
+      onPlaylistSelect(playlist.id);
+    }
   }
 </script>
 
@@ -47,20 +88,6 @@
       >
         {#snippet icon()}<Home size={18} />{/snippet}
       </NavigationItem>
-      <NavigationItem
-        label="New"
-        active={activeView === 'new'}
-        onclick={() => handleViewChange('new')}
-      >
-        {#snippet icon()}<Radio size={18} />{/snippet}
-      </NavigationItem>
-      <NavigationItem
-        label="Radio"
-        active={activeView === 'radio'}
-        onclick={() => handleViewChange('radio')}
-      >
-        {#snippet icon()}<Radio size={18} />{/snippet}
-      </NavigationItem>
     </nav>
 
     <!-- Library Section -->
@@ -101,20 +128,12 @@
       <div class="playlists-header">
         <div class="section-header">Playlists</div>
         <div class="header-actions">
-          <button class="icon-btn">
+          <button class="icon-btn" onclick={loadUserPlaylists} title="Refresh playlists">
             <MoreVertical size={14} />
           </button>
-          <button class="icon-btn">
-            <ChevronDown size={14} />
-          </button>
         </div>
       </div>
 
-      <button class="create-btn">
-        <Plus size={18} />
-        <span>Create New...</span>
-      </button>
-
       <NavigationItem
         label="Favorites"
         active={activeView === 'favorites'}
@@ -122,6 +141,22 @@
       >
         {#snippet icon()}<Heart size={18} />{/snippet}
       </NavigationItem>
+
+      {#if playlistsLoading}
+        <div class="playlists-loading">Loading...</div>
+      {:else if userPlaylists.length > 0}
+        {#each userPlaylists as playlist (playlist.id)}
+          <NavigationItem
+            label={playlist.name}
+            active={activeView === 'playlist' && selectedPlaylistId === playlist.id}
+            onclick={() => handlePlaylistClick(playlist)}
+          >
+            {#snippet icon()}<ListMusic size={18} />{/snippet}
+          </NavigationItem>
+        {/each}
+      {:else}
+        <div class="no-playlists">No playlists yet</div>
+      {/if}
     </div>
   </div>
 
@@ -246,28 +281,11 @@
     color: var(--text-primary);
   }
 
-  .create-btn {
+  .playlists-loading,
-    width: 100%;
+  .no-playlists {
-    height: 36px;
+    font-size: 13px;
-    display: flex;
-    align-items: center;
-    gap: 8px;
-    padding: 0 12px;
-    border-radius: 8px;
-    border: none;
-    background: transparent;
     color: var(--text-muted);
-    cursor: pointer;
+    padding: 8px 12px;
-    transition: background-color 150ms ease;
-  }
-
-  .create-btn:hover {
-    background-color: var(--bg-hover);
-  }
-
-  .create-btn span {
-    font-size: 14px;
-    font-weight: 400;
   }
 
   .user-section {

src/routes/+page.svelte

@@ -119,10 +119,11 @@
   let userInfo = $state<{ userName: string; subscription: string } | null>(null);
 
   // View State
-  type ViewType = 'home' | 'search' | 'library' | 'settings' | 'album';
+  type ViewType = 'home' | 'search' | 'library' | 'settings' | 'album' | 'playlist' | 'favorites';
   let activeView = $state<ViewType>('home');
   let viewHistory = $state<ViewType[]>(['home']);
   let selectedAlbum = $state<AlbumDetail | null>(null);
+  let selectedPlaylistId = $state<number | null>(null);
 
   // Overlay States
   let isQueueOpen = $state(false);
@@ -166,9 +167,17 @@
       if (activeView !== 'album') {
         selectedAlbum = null;
       }
+      if (activeView !== 'playlist') {
+        selectedPlaylistId = null;
+      }
     }
   }
 
+  function handlePlaylistSelect(playlistId: number) {
+    selectedPlaylistId = playlistId;
+    navigateTo('playlist');
+  }
+
   async function handleAlbumClick(albumId: string) {
     try {
       showToast('Loading album...', 'info');
@@ -760,7 +769,9 @@
     <!-- Sidebar -->
     <Sidebar
       {activeView}
+      {selectedPlaylistId}
       onNavigate={navigateTo}
+      onPlaylistSelect={handlePlaylistSelect}
       onSettingsClick={() => navigateTo('settings')}
       onLogout={handleLogout}
       userName={userInfo?.userName || 'User'}
@@ -794,6 +805,18 @@
           <h1>Library</h1>
           <p>Your library will appear here...</p>
         </div>
+      {:else if activeView === 'playlist' && selectedPlaylistId}
+        <div class="placeholder-view">
+          <h1>Playlist</h1>
+          <p>Playlist view coming soon... (ID: {selectedPlaylistId})</p>
+          <button class="back-btn" onclick={goBack}>Go Back</button>
+        </div>
+      {:else if activeView === 'favorites'}
+        <div class="placeholder-view">
+          <h1>Favorites</h1>
+          <p>Your favorite tracks and albums will appear here...</p>
+          <button class="back-btn" onclick={goBack}>Go Back</button>
+        </div>
       {/if}
     </main>