feat(device): add device sync button

src-tauri/Cargo.lock

@@ -26,6 +26,8 @@ dependencies = [
  "tauri-plugin-sql",
  "tauri-plugin-store",
  "tokio",
+ "unicode-normalization",
+ "walkdir",
 ]
 
 [[package]]

src-tauri/Cargo.toml

@@ -37,4 +37,6 @@ reqwest = { version = "0.12.23", features = ["stream", "rustls-tls"] }
 tokio = { version = "1.47.1", features = ["fs", "io-util"] }
 futures-util = "0.3.31"
 tauri-plugin-os = "2"
+walkdir = "2.5.0"
+unicode-normalization = "0.1.24"
 

src-tauri/src/device_sync.rs

@@ -0,0 +1,241 @@
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::fs;
+use std::path::{Path, PathBuf};
+use tauri::{AppHandle, Emitter};
+use unicode_normalization::UnicodeNormalization;
+use walkdir::WalkDir;
+
+#[derive(Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct FileInfo {
+    relative_path: String,
+    size: u64,
+    status: String, // "new" | "updated"
+}
+
+#[derive(Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SyncDiff {
+    files_to_copy: Vec<FileInfo>,
+    stats: SyncStats,
+}
+
+#[derive(Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SyncStats {
+    new_files: usize,
+    updated_files: usize,
+    unchanged_files: usize,
+    total_size: u64,
+}
+
+#[derive(Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SyncProgress {
+    current: usize,
+    total: usize,
+    current_file: String,
+    status: String,
+}
+
+struct FileMetadata {
+    size: u64,
+}
+
+fn should_skip_file(path: &Path) -> bool {
+    let file_name = path.file_name()
+        .and_then(|n| n.to_str())
+        .unwrap_or("");
+
+    // Skip system files
+    matches!(file_name, ".DS_Store" | "Thumbs.db" | "desktop.ini" | ".nomedia")
+}
+
+fn should_skip_dir(path: &Path) -> bool {
+    let dir_name = path.file_name()
+        .and_then(|n| n.to_str())
+        .unwrap_or("");
+
+    // Skip temp folders
+    dir_name == "_temp"
+}
+
+/// Normalize a path string to NFC form for consistent comparison
+fn normalize_path(path: &Path) -> String {
+    path.to_string_lossy().nfc().collect::<String>()
+}
+
+/// Index device and compare with library
+#[tauri::command]
+pub async fn index_and_compare(
+    library_path: String,
+    device_path: String,
+    overwrite_mode: String, // "skip" | "different" | "always"
+) -> Result<SyncDiff, String> {
+    let library_path = PathBuf::from(library_path);
+    let device_path = PathBuf::from(device_path);
+
+    // Validate paths exist
+    if !library_path.exists() {
+        return Err(format!("Library path does not exist: {}", library_path.display()));
+    }
+    if !device_path.exists() {
+        return Err(format!("Device path does not exist: {}", device_path.display()));
+    }
+
+    // Step 1: Index device - build HashMap of existing files with normalized paths
+    let mut device_files: HashMap<String, FileMetadata> = HashMap::new();
+
+    for entry in WalkDir::new(&device_path)
+        .follow_links(false)
+        .into_iter()
+        .filter_entry(|e| !should_skip_dir(e.path()))
+    {
+        let entry = entry.map_err(|e| format!("Error reading device: {}", e))?;
+
+        if entry.file_type().is_file() && !should_skip_file(entry.path()) {
+            let relative_path = entry.path()
+                .strip_prefix(&device_path)
+                .map_err(|e| format!("Path error: {}", e))?
+                .to_path_buf();
+
+            if let Ok(metadata) = entry.metadata() {
+                let normalized = normalize_path(&relative_path);
+                device_files.insert(normalized, FileMetadata {
+                    size: metadata.len(),
+                });
+            }
+        }
+    }
+
+    // Step 2: Walk library and compare
+    let mut files_to_copy = Vec::new();
+    let mut new_count = 0;
+    let mut updated_count = 0;
+    let mut unchanged_count = 0;
+    let mut total_size = 0u64;
+
+    for entry in WalkDir::new(&library_path)
+        .follow_links(false)
+        .into_iter()
+        .filter_entry(|e| !should_skip_dir(e.path()))
+    {
+        let entry = entry.map_err(|e| format!("Error reading library: {}", e))?;
+
+        if entry.file_type().is_file() && !should_skip_file(entry.path()) {
+            let relative_path = entry.path()
+                .strip_prefix(&library_path)
+                .map_err(|e| format!("Path error: {}", e))?
+                .to_path_buf();
+
+            let metadata = entry.metadata()
+                .map_err(|e| format!("Cannot read file metadata: {}", e))?;
+
+            let file_size = metadata.len();
+            let normalized_path = normalize_path(&relative_path);
+
+            // Check if file exists on device (using normalized path)
+            if let Some(device_meta) = device_files.get(&normalized_path) {
+                // File exists on device
+                let size_different = device_meta.size != file_size;
+
+                let should_copy = match overwrite_mode.as_str() {
+                    "skip" => false, // Never overwrite
+                    "different" => size_different, // Only if different size
+                    "always" => true, // Always overwrite
+                    _ => size_different, // Default to "different"
+                };
+
+                if should_copy {
+                    files_to_copy.push(FileInfo {
+                        relative_path: relative_path.to_string_lossy().to_string(),
+                        size: file_size,
+                        status: "updated".to_string(),
+                    });
+                    updated_count += 1;
+                    total_size += file_size;
+                } else {
+                    unchanged_count += 1;
+                }
+            } else {
+                // File doesn't exist on device - new file
+                files_to_copy.push(FileInfo {
+                    relative_path: relative_path.to_string_lossy().to_string(),
+                    size: file_size,
+                    status: "new".to_string(),
+                });
+                new_count += 1;
+                total_size += file_size;
+            }
+        }
+    }
+
+    Ok(SyncDiff {
+        files_to_copy,
+        stats: SyncStats {
+            new_files: new_count,
+            updated_files: updated_count,
+            unchanged_files: unchanged_count,
+            total_size,
+        },
+    })
+}
+
+/// Sync files to device
+#[tauri::command]
+pub async fn sync_to_device(
+    app: AppHandle,
+    library_path: String,
+    device_path: String,
+    files_to_copy: Vec<FileInfo>,
+) -> Result<String, String> {
+    let library_path = PathBuf::from(library_path);
+    let device_path = PathBuf::from(device_path);
+
+    let total = files_to_copy.len();
+
+    for (index, file_info) in files_to_copy.iter().enumerate() {
+        let source = library_path.join(&file_info.relative_path);
+        let dest = device_path.join(&file_info.relative_path);
+
+        // Emit progress
+        app.emit("sync-progress", SyncProgress {
+            current: index + 1,
+            total,
+            current_file: file_info.relative_path.clone(),
+            status: format!("Copying {} ({} of {})", file_info.relative_path, index + 1, total),
+        }).map_err(|e| format!("Failed to emit progress: {}", e))?;
+
+        // Create parent directory if needed
+        if let Some(parent) = dest.parent() {
+            fs::create_dir_all(parent)
+                .map_err(|e| format!("Failed to create directory {}: {}", parent.display(), e))?;
+        }
+
+        // Copy file
+        fs::copy(&source, &dest)
+            .map_err(|e| {
+                // Check for common errors
+                match e.kind() {
+                    std::io::ErrorKind::PermissionDenied => {
+                        format!("Permission denied: {}", dest.display())
+                    }
+                    std::io::ErrorKind::NotFound => {
+                        format!("Device disconnected or path not found: {}", dest.display())
+                    }
+                    _ => format!("Failed to copy {}: {}", file_info.relative_path, e)
+                }
+            })?;
+    }
+
+    // Emit completion
+    app.emit("sync-progress", SyncProgress {
+        current: total,
+        total,
+        current_file: String::new(),
+        status: format!("Sync complete! Copied {} files", total),
+    }).map_err(|e| format!("Failed to emit completion: {}", e))?;
+
+    Ok(format!("Successfully synced {} files to device", total))
+}

src-tauri/src/lib.rs

@@ -1,6 +1,7 @@
 use tauri_plugin_sql::{Migration, MigrationKind};
 
 mod deezer_crypto;
+mod device_sync;
 mod metadata;
 mod tagger;
 
@@ -317,7 +318,9 @@ pub fn run() {
             tag_audio_file,
             read_audio_metadata,
             decrypt_deezer_track,
-            download_and_decrypt_track
+            download_and_decrypt_track,
+            device_sync::index_and_compare,
+            device_sync::sync_to_device
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");

src/lib/ToolBar.svelte

@@ -9,6 +9,7 @@
     play: '/icons/speaker.png',
     search: '/icons/internet.png',
     computer: '/icons/computer.png',
+    device: '/icons/ipod.svg',
   };
 
   let history: string[] = $state([]);
@@ -81,6 +82,11 @@
     <span>Search</span>
   </a>
 
+  <a href="/sync" class="toolbar-button" title="Device Sync">
+    <img src={icons.device} alt="Device Sync" />
+    <span>Sync</span>
+  </a>
+
   <a href="/settings" class="toolbar-button" title="Settings">
     <img src={icons.computer} alt="Settings" />
     <span>Settings</span>

src/lib/services/deviceSync.ts

@@ -0,0 +1,107 @@
+/**
+ * Device sync service layer
+ * Handles communication with Tauri backend for device synchronization
+ */
+
+import { invoke } from '@tauri-apps/api/core';
+import { listen, type UnlistenFn } from '@tauri-apps/api/event';
+
+export interface FileInfo {
+  relativePath: string;
+  size: number;
+  status: 'new' | 'updated';
+}
+
+export interface SyncStats {
+  newFiles: number;
+  updatedFiles: number;
+  unchangedFiles: number;
+  totalSize: number;
+}
+
+export interface SyncDiff {
+  filesToCopy: FileInfo[];
+  stats: SyncStats;
+}
+
+export interface SyncProgress {
+  current: number;
+  total: number;
+  currentFile: string;
+  status: string;
+}
+
+export type ProgressCallback = (progress: SyncProgress) => void;
+
+/**
+ * Index device and compare with library
+ * Returns a diff showing which files need to be synced
+ */
+export async function indexAndCompare(
+  libraryPath: string,
+  devicePath: string,
+  overwriteMode: string
+): Promise<SyncDiff> {
+  try {
+    const result = await invoke<SyncDiff>('index_and_compare', {
+      libraryPath,
+      devicePath,
+      overwriteMode
+    });
+    return result;
+  } catch (error) {
+    console.error('Error indexing and comparing:', error);
+    throw new Error(String(error));
+  }
+}
+
+/**
+ * Sync files to device with progress updates
+ */
+export async function syncToDevice(
+  libraryPath: string,
+  devicePath: string,
+  filesToCopy: FileInfo[],
+  onProgress?: ProgressCallback
+): Promise<string> {
+  let unlisten: UnlistenFn | null = null;
+
+  try {
+    // Set up progress listener
+    unlisten = await listen<SyncProgress>('sync-progress', (event) => {
+      if (onProgress) {
+        onProgress(event.payload);
+      }
+    });
+
+    // Start sync operation
+    const result = await invoke<string>('sync_to_device', {
+      libraryPath,
+      devicePath,
+      filesToCopy
+    });
+
+    return result;
+  } catch (error) {
+    console.error('Error syncing to device:', error);
+    throw new Error(String(error));
+  } finally {
+    // Clean up event listener
+    if (unlisten) {
+      unlisten();
+    }
+  }
+}
+
+/**
+ * Format bytes to human-readable string
+ */
+export function formatBytes(bytes: number): string {
+  if (bytes === 0) return '0 Bytes';
+
+  const k = 1024;
+  const sizes = ['Bytes', 'KB', 'MB', 'GB'];
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+
+  return Math.round((bytes / Math.pow(k, i)) * 100) / 100 + ' ' + sizes[i];
+}

src/lib/stores/deviceSync.ts

@@ -0,0 +1,81 @@
+import { LazyStore } from '@tauri-apps/plugin-store';
+import { writable, type Writable } from 'svelte/store';
+
+// Device sync settings interface
+export type OverwriteMode = 'skip' | 'different' | 'always';
+
+export interface DeviceSyncSettings {
+  musicPath: string | null;
+  playlistsPath: string | null;
+  overwriteMode: OverwriteMode;
+}
+
+// Initialize the store with device-sync.json
+const store = new LazyStore('device-sync.json');
+
+// Default settings
+const defaultSettings: DeviceSyncSettings = {
+  musicPath: null,
+  playlistsPath: null,
+  overwriteMode: 'different'
+};
+
+// Create a writable store for reactive UI updates
+export const deviceSyncSettings: Writable<DeviceSyncSettings> = writable(defaultSettings);
+
+// Load settings from store
+export async function loadDeviceSyncSettings(): Promise<void> {
+  const musicPath = await store.get<string>('musicPath');
+  const playlistsPath = await store.get<string>('playlistsPath');
+  const overwriteMode = await store.get<OverwriteMode>('overwriteMode');
+
+  deviceSyncSettings.set({
+    musicPath: musicPath ?? null,
+    playlistsPath: playlistsPath ?? null,
+    overwriteMode: overwriteMode ?? 'different'
+  });
+}
+
+// Save device music path setting
+export async function setMusicPath(path: string | null): Promise<void> {
+  if (path) {
+    await store.set('musicPath', path);
+  } else {
+    await store.delete('musicPath');
+  }
+  await store.save();
+
+  deviceSyncSettings.update(s => ({
+    ...s,
+    musicPath: path
+  }));
+}
+
+// Save device playlists path setting
+export async function setPlaylistsPath(path: string | null): Promise<void> {
+  if (path) {
+    await store.set('playlistsPath', path);
+  } else {
+    await store.delete('playlistsPath');
+  }
+  await store.save();
+
+  deviceSyncSettings.update(s => ({
+    ...s,
+    playlistsPath: path
+  }));
+}
+
+// Save overwrite mode setting
+export async function setOverwriteMode(mode: OverwriteMode): Promise<void> {
+  await store.set('overwriteMode', mode);
+  await store.save();
+
+  deviceSyncSettings.update(s => ({
+    ...s,
+    overwriteMode: mode
+  }));
+}
+
+// Initialize settings on import
+loadDeviceSyncSettings();

src/routes/sync/+page.svelte

@@ -0,0 +1,608 @@
+<script lang="ts">
+  import { onMount } from 'svelte';
+  import { open } from '@tauri-apps/plugin-dialog';
+  import { exists } from '@tauri-apps/plugin-fs';
+  import { settings } from '$lib/stores/settings';
+  import {
+    deviceSyncSettings,
+    loadDeviceSyncSettings,
+    setMusicPath,
+    setPlaylistsPath,
+    setOverwriteMode,
+    type OverwriteMode
+  } from '$lib/stores/deviceSync';
+  import {
+    indexAndCompare,
+    syncToDevice,
+    formatBytes,
+    type SyncDiff,
+    type SyncProgress
+  } from '$lib/services/deviceSync';
+
+  type ViewMode = 'sync' | 'preferences';
+
+  let viewMode = $state<ViewMode>('sync');
+  let configured = $state(false);
+  let deviceConnected = $state(false);
+  let checkingConnection = $state(false);
+
+  // Path inputs for initial setup
+  let musicPathInput = $state('');
+  let playlistsPathInput = $state('');
+
+  // Sync state
+  let indexing = $state(false);
+  let syncing = $state(false);
+  let syncDiff = $state<SyncDiff | null>(null);
+  let syncProgress = $state<SyncProgress | null>(null);
+  let error = $state<string | null>(null);
+  let successMessage = $state<string | null>(null);
+  let selectedFileIndex = $state<number | null>(null);
+
+  onMount(async () => {
+    await loadDeviceSyncSettings();
+    configured = !!$deviceSyncSettings.musicPath;
+
+    if (configured) {
+      await checkDeviceConnection();
+    }
+  });
+
+  async function checkDeviceConnection() {
+    if (!$deviceSyncSettings.musicPath) {
+      deviceConnected = false;
+      return;
+    }
+
+    checkingConnection = true;
+    try {
+      deviceConnected = await exists($deviceSyncSettings.musicPath);
+    } catch (e) {
+      deviceConnected = false;
+    } finally {
+      checkingConnection = false;
+    }
+  }
+
+  async function handleBrowseMusicPath() {
+    const selected = await open({
+      directory: true,
+      multiple: false,
+      title: 'Select Device Music Folder'
+    });
+
+    if (selected && typeof selected === 'string') {
+      musicPathInput = selected;
+    }
+  }
+
+  async function handleBrowsePlaylistsPath() {
+    const selected = await open({
+      directory: true,
+      multiple: false,
+      title: 'Select Device Playlists Folder'
+    });
+
+    if (selected && typeof selected === 'string') {
+      playlistsPathInput = selected;
+    }
+  }
+
+  async function handleSaveConfiguration() {
+    if (!musicPathInput) {
+      error = 'Please select a music folder path';
+      return;
+    }
+
+    error = null;
+    await setMusicPath(musicPathInput);
+    await setPlaylistsPath(playlistsPathInput || null);
+
+    configured = true;
+    await checkDeviceConnection();
+  }
+
+  async function handleIndexAndCompare() {
+    if (!$settings.musicFolder) {
+      error = 'No library music folder configured. Please set one in Settings.';
+      return;
+    }
+
+    if (!$deviceSyncSettings.musicPath) {
+      error = 'No device music path configured.';
+      return;
+    }
+
+    indexing = true;
+    error = null;
+    successMessage = null;
+    syncDiff = null;
+
+    try {
+      await checkDeviceConnection();
+      if (!deviceConnected) {
+        throw new Error('Device is not connected or path does not exist');
+      }
+
+      const result = await indexAndCompare(
+        $settings.musicFolder,
+        $deviceSyncSettings.musicPath,
+        $deviceSyncSettings.overwriteMode
+      );
+
+      syncDiff = result;
+      successMessage = `Found ${result.filesToCopy.length} files to sync`;
+    } catch (e) {
+      error = 'Error indexing device: ' + (e instanceof Error ? e.message : String(e));
+      syncDiff = null;
+    } finally {
+      indexing = false;
+    }
+  }
+
+  async function handleSync() {
+    if (!syncDiff || syncDiff.filesToCopy.length === 0) {
+      error = 'No files to sync. Run Index & Compare first.';
+      return;
+    }
+
+    if (!$settings.musicFolder || !$deviceSyncSettings.musicPath) {
+      error = 'Configuration error';
+      return;
+    }
+
+    syncing = true;
+    error = null;
+    successMessage = null;
+    syncProgress = null;
+
+    try {
+      const result = await syncToDevice(
+        $settings.musicFolder,
+        $deviceSyncSettings.musicPath,
+        syncDiff.filesToCopy,
+        (progress) => {
+          syncProgress = progress;
+        }
+      );
+
+      successMessage = result;
+      syncDiff = null;
+    } catch (e) {
+      error = 'Error syncing to device: ' + (e instanceof Error ? e.message : String(e));
+    } finally {
+      syncing = false;
+      syncProgress = null;
+    }
+  }
+
+  async function handleUpdateMusicPath() {
+    const selected = await open({
+      directory: true,
+      multiple: false,
+      title: 'Select Device Music Folder'
+    });
+
+    if (selected && typeof selected === 'string') {
+      await setMusicPath(selected);
+      await checkDeviceConnection();
+    }
+  }
+
+  async function handleUpdatePlaylistsPath() {
+    const selected = await open({
+      directory: true,
+      multiple: false,
+      title: 'Select Device Playlists Folder'
+    });
+
+    if (selected && typeof selected === 'string') {
+      await setPlaylistsPath(selected);
+    }
+  }
+
+  function handleFileClick(index: number) {
+    selectedFileIndex = index;
+  }
+</script>
+
+<div class="sync-wrapper">
+  <h2 style="padding: 8px">Device Sync</h2>
+
+  {#if !configured}
+    <!-- Initial Configuration -->
+    <section class="window config-section" style="max-width: 600px; margin: 8px;">
+      <div class="title-bar">
+        <div class="title-bar-text">Configure Device Paths</div>
+      </div>
+      <div class="window-body" style="padding: 12px;">
+        <p>Select the folders on your portable device to sync music and playlists:</p>
+
+        <div class="field-row-stacked">
+          <label for="music-path-input">Device Music Folder</label>
+          <div class="input-with-button">
+            <input
+              id="music-path-input"
+              type="text"
+              bind:value={musicPathInput}
+              placeholder="/Volumes/iPod/Music"
+              readonly
+            />
+            <button onclick={handleBrowseMusicPath}>Browse...</button>
+          </div>
+        </div>
+
+        <div class="field-row-stacked">
+          <label for="playlists-path-input">Device Playlists Folder</label>
+          <div class="input-with-button">
+            <input
+              id="playlists-path-input"
+              type="text"
+              bind:value={playlistsPathInput}
+              placeholder="/Volumes/iPod/Playlists"
+              readonly
+            />
+            <button onclick={handleBrowsePlaylistsPath}>Browse...</button>
+          </div>
+        </div>
+
+        {#if error}
+          <p class="error">{error}</p>
+        {/if}
+
+        <div class="button-row">
+          <button onclick={handleSaveConfiguration}>Save Configuration</button>
+        </div>
+      </div>
+    </section>
+  {:else if syncing}
+    <div class="sync-status">
+      {#if syncProgress && syncProgress.total > 0}
+        <p class="progress-text">{syncProgress.current} / {syncProgress.total} files</p>
+        <div class="progress-bar">
+          <div
+            class="progress-fill"
+            style="width: {(syncProgress.current / syncProgress.total) * 100}%"
+          ></div>
+        </div>
+        {#if syncProgress.currentFile}
+          <p class="current-file">{syncProgress.currentFile}</p>
+        {/if}
+      {:else}
+        <p>Syncing...</p>
+      {/if}
+    </div>
+  {:else if indexing}
+    <p style="padding: 8px;">Indexing device...</p>
+  {:else if error}
+    <p class="error" style="padding: 8px;">{error}</p>
+  {:else}
+    <section class="sync-content">
+      <!-- Tabs -->
+      <!--
+        svelte-ignore a11y_no_noninteractive_element_to_interactive_role
+        Reason: 98.css library requires <menu role="tablist"> for proper tab styling.
+      -->
+      <menu role="tablist">
+        <li role="tab" aria-selected={viewMode === 'sync'}>
+          <button onclick={() => viewMode = 'sync'}>Sync</button>
+        </li>
+        <li role="tab" aria-selected={viewMode === 'preferences'}>
+          <button onclick={() => viewMode = 'preferences'}>Preferences</button>
+        </li>
+      </menu>
+
+      <!-- Tab Content -->
+      <div class="window tab-content" role="tabpanel">
+        <div class="window-body">
+          {#if viewMode === 'sync'}
+            <!-- Sync Tab -->
+            <div class="sync-info">
+              <p>
+                <strong>Device:</strong>
+                {#if checkingConnection}
+                  Checking...
+                {:else if deviceConnected}
+                  Connected - {$deviceSyncSettings.musicPath}
+                {:else}
+                  Not Connected - {$deviceSyncSettings.musicPath}
+                {/if}
+              </p>
+              <div class="button-group">
+                <button
+                  onclick={handleIndexAndCompare}
+                  disabled={indexing || syncing || !deviceConnected}
+                >
+                  {indexing ? 'Indexing...' : 'Index & Compare'}
+                </button>
+                <button
+                  onclick={handleSync}
+                  disabled={!syncDiff || syncDiff.filesToCopy.length === 0 || syncing || !deviceConnected}
+                >
+                  {syncing ? 'Syncing...' : 'Sync to Device'}
+                </button>
+              </div>
+              {#if successMessage}
+                <p class="success">{successMessage}</p>
+              {/if}
+              {#if syncDiff}
+                <p>
+                  New: {syncDiff.stats.newFiles} | Updated: {syncDiff.stats.updatedFiles} |
+                  Unchanged: {syncDiff.stats.unchangedFiles} |
+                  Total: {formatBytes(syncDiff.stats.totalSize)}
+                </p>
+              {/if}
+            </div>
+
+            {#if syncDiff && syncDiff.filesToCopy.length > 0}
+              <div class="sunken-panel table-container">
+                <table class="interactive">
+                  <thead>
+                    <tr>
+                      <th>File</th>
+                      <th>Status</th>
+                      <th>Size</th>
+                    </tr>
+                  </thead>
+                  <tbody>
+                    {#each syncDiff.filesToCopy as file, i}
+                      <tr
+                        class:highlighted={selectedFileIndex === i}
+                        onclick={() => handleFileClick(i)}
+                      >
+                        <td>{file.relativePath}</td>
+                        <td>{file.status}</td>
+                        <td class="size-cell">{formatBytes(file.size)}</td>
+                      </tr>
+                    {/each}
+                  </tbody>
+                </table>
+              </div>
+            {/if}
+          {:else if viewMode === 'preferences'}
+            <!-- Preferences Tab -->
+            <div class="prefs-container">
+              <fieldset>
+                <legend>Device Paths</legend>
+                <div class="field-row-stacked">
+                  <label>Device Music Path</label>
+                  <div class="path-display">
+                    <code>{$deviceSyncSettings.musicPath || 'Not set'}</code>
+                    <button onclick={handleUpdateMusicPath}>Change...</button>
+                  </div>
+                </div>
+
+                <div class="field-row-stacked">
+                  <label>Device Playlists Path</label>
+                  <div class="path-display">
+                    <code>{$deviceSyncSettings.playlistsPath || 'Not set'}</code>
+                    <button onclick={handleUpdatePlaylistsPath}>Change...</button>
+                  </div>
+                </div>
+              </fieldset>
+
+              <fieldset style="margin-top: 16px;">
+                <legend>When file exists on device</legend>
+                <div class="field-row">
+                  <input
+                    type="radio"
+                    id="mode-skip"
+                    name="overwrite-mode"
+                    value="skip"
+                    bind:group={$deviceSyncSettings.overwriteMode}
+                    onchange={() => setOverwriteMode($deviceSyncSettings.overwriteMode)}
+                  />
+                  <label for="mode-skip">Skip (don't overwrite)</label>
+                </div>
+
+                <div class="field-row">
+                  <input
+                    type="radio"
+                    id="mode-different"
+                    name="overwrite-mode"
+                    value="different"
+                    bind:group={$deviceSyncSettings.overwriteMode}
+                    onchange={() => setOverwriteMode($deviceSyncSettings.overwriteMode)}
+                  />
+                  <label for="mode-different">Overwrite if different size</label>
+                </div>
+
+                <div class="field-row">
+                  <input
+                    type="radio"
+                    id="mode-always"
+                    name="overwrite-mode"
+                    value="always"
+                    bind:group={$deviceSyncSettings.overwriteMode}
+                    onchange={() => setOverwriteMode($deviceSyncSettings.overwriteMode)}
+                  />
+                  <label for="mode-always">Always overwrite</label>
+                </div>
+
+                <p class="help-text">
+                  System files and _temp folders are always skipped.
+                </p>
+              </fieldset>
+            </div>
+          {/if}
+        </div>
+      </div>
+    </section>
+  {/if}
+</div>
+
+<style>
+  .sync-wrapper {
+    height: 100%;
+    display: flex;
+    flex-direction: column;
+  }
+
+  h2 {
+    margin: 0;
+    flex-shrink: 0;
+  }
+
+  .sync-status {
+    padding: 16px 8px;
+  }
+
+  .sync-status p {
+    margin: 0 0 8px 0;
+  }
+
+  .progress-bar {
+    width: 100%;
+    height: 20px;
+    background: #c0c0c0;
+    border: 2px inset #808080;
+    margin-bottom: 4px;
+  }
+
+  .progress-fill {
+    height: 100%;
+    background: linear-gradient(90deg, #000080, #0000ff);
+    transition: width 0.2s ease;
+  }
+
+  .progress-text {
+    font-size: 12px;
+    color: #808080;
+  }
+
+  .current-file {
+    font-size: 11px;
+    font-family: monospace;
+    color: #808080;
+    margin: 4px 0 0 0;
+    word-break: break-all;
+  }
+
+  .config-section {
+    margin-bottom: 16px;
+  }
+
+  .field-row-stacked {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    margin-bottom: 12px;
+  }
+
+  .input-with-button {
+    display: flex;
+    gap: 8px;
+  }
+
+  .input-with-button input {
+    flex: 1;
+    padding: 4px;
+  }
+
+  .field-row {
+    display: flex;
+    gap: 8px;
+    margin-bottom: 8px;
+    align-items: center;
+  }
+
+  .button-row {
+    margin-top: 12px;
+    display: flex;
+    gap: 8px;
+  }
+
+  .button-group {
+    display: flex;
+    gap: 8px;
+    margin: 8px 0;
+  }
+
+  .error {
+    color: #ff6b6b;
+  }
+
+  .success {
+    color: #808080;
+  }
+
+  .sync-content {
+    margin: 0;
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+  }
+
+  .tab-content {
+    margin-top: -2px;
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+  }
+
+  .window-body {
+    padding: 0;
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    min-height: 0;
+  }
+
+  .sync-info {
+    padding: 16px 8px;
+    flex-shrink: 0;
+  }
+
+  .sync-info p {
+    margin: 0 0 8px 0;
+  }
+
+  .table-container {
+    flex: 1;
+    overflow-y: auto;
+    min-height: 0;
+  }
+
+  table {
+    width: 100%;
+  }
+
+  th {
+    text-align: left;
+  }
+
+  .size-cell {
+    text-align: right;
+    font-family: monospace;
+    font-size: 0.9em;
+    width: 100px;
+  }
+
+  .prefs-container {
+    padding: 16px;
+    overflow-y: auto;
+  }
+
+  .path-display {
+    display: flex;
+    gap: 8px;
+    align-items: center;
+  }
+
+  .path-display code {
+    flex: 1;
+    padding: 4px 8px;
+    background: var(--button-shadow, #2a2a2a);
+    border: 1px solid var(--button-highlight, #606060);
+    font-family: monospace;
+    font-size: 0.9em;
+  }
+
+  .help-text {
+    margin: 8px 0 0 0;
+    font-size: 11px;
+    color: #808080;
+  }
+</style>