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Initial commit: SpotiFLAC Android/iOS app
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@@ -0,0 +1,122 @@
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import 'dart:io';
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import 'package:ffmpeg_kit_flutter_new/ffmpeg_kit.dart';
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import 'package:ffmpeg_kit_flutter_new/return_code.dart';
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/// FFmpeg service for audio conversion and remuxing
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class FFmpegService {
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/// Convert M4A (DASH segments) to FLAC
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/// Returns the output file path on success, null on failure
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static Future<String?> convertM4aToFlac(String inputPath) async {
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final outputPath = inputPath.replaceAll('.m4a', '.flac');
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// FFmpeg command to remux M4A to FLAC
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final command =
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'-i "$inputPath" -c:a flac -compression_level 8 "$outputPath" -y';
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final session = await FFmpegKit.execute(command);
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final returnCode = await session.getReturnCode();
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if (ReturnCode.isSuccess(returnCode)) {
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// Delete original M4A file
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try {
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await File(inputPath).delete();
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} catch (_) {}
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return outputPath;
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}
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// Log error for debugging
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final logs = await session.getLogs();
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for (final log in logs) {
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print('[FFmpeg] ${log.getMessage()}');
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}
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return null;
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}
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/// Convert FLAC to MP3
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static Future<String?> convertFlacToMp3(
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String inputPath, {
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String bitrate = '320k',
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}) async {
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final dir = File(inputPath).parent.path;
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final baseName =
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inputPath.split(Platform.pathSeparator).last.replaceAll('.flac', '');
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final outputDir = '$dir${Platform.pathSeparator}MP3';
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// Create output directory
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await Directory(outputDir).create(recursive: true);
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final outputPath = '$outputDir${Platform.pathSeparator}$baseName.mp3';
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final command =
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'-i "$inputPath" -codec:a libmp3lame -b:a $bitrate -map 0:a -map_metadata 0 -id3v2_version 3 "$outputPath" -y';
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final session = await FFmpegKit.execute(command);
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final returnCode = await session.getReturnCode();
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if (ReturnCode.isSuccess(returnCode)) {
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return outputPath;
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}
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return null;
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}
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/// Convert FLAC to M4A (AAC or ALAC)
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static Future<String?> convertFlacToM4a(
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String inputPath, {
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String codec = 'aac',
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String bitrate = '256k',
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}) async {
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final dir = File(inputPath).parent.path;
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final baseName =
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inputPath.split(Platform.pathSeparator).last.replaceAll('.flac', '');
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final outputDir = '$dir${Platform.pathSeparator}M4A';
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// Create output directory
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await Directory(outputDir).create(recursive: true);
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final outputPath = '$outputDir${Platform.pathSeparator}$baseName.m4a';
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String command;
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if (codec == 'alac') {
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// ALAC - lossless
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command =
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'-i "$inputPath" -codec:a alac -map 0:a -map_metadata 0 "$outputPath" -y';
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} else {
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// AAC - lossy
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command =
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'-i "$inputPath" -codec:a aac -b:a $bitrate -map 0:a -map_metadata 0 "$outputPath" -y';
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}
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final session = await FFmpegKit.execute(command);
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final returnCode = await session.getReturnCode();
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if (ReturnCode.isSuccess(returnCode)) {
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return outputPath;
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}
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return null;
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}
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/// Check if FFmpeg is available
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static Future<bool> isAvailable() async {
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try {
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final session = await FFmpegKit.execute('-version');
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final returnCode = await session.getReturnCode();
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return ReturnCode.isSuccess(returnCode);
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} catch (e) {
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return false;
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}
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}
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/// Get FFmpeg version info
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static Future<String?> getVersion() async {
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try {
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final session = await FFmpegKit.execute('-version');
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final output = await session.getOutput();
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return output;
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} catch (e) {
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return null;
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}
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}
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}
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@@ -0,0 +1,198 @@
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import 'dart:convert';
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import 'package:flutter/services.dart';
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/// Bridge to communicate with Go backend via platform channels
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class PlatformBridge {
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static const _channel = MethodChannel('com.zarz.spotiflac/backend');
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/// Parse and validate Spotify URL
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static Future<Map<String, dynamic>> parseSpotifyUrl(String url) async {
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final result = await _channel.invokeMethod('parseSpotifyUrl', {'url': url});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Get Spotify metadata from URL
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static Future<Map<String, dynamic>> getSpotifyMetadata(String url) async {
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final result = await _channel.invokeMethod('getSpotifyMetadata', {'url': url});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Search Spotify
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static Future<Map<String, dynamic>> searchSpotify(String query, {int limit = 10}) async {
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final result = await _channel.invokeMethod('searchSpotify', {
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'query': query,
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'limit': limit,
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});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Check track availability on streaming services
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static Future<Map<String, dynamic>> checkAvailability(String spotifyId, String isrc) async {
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final result = await _channel.invokeMethod('checkAvailability', {
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'spotify_id': spotifyId,
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'isrc': isrc,
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});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Download a track from specific service
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static Future<Map<String, dynamic>> downloadTrack({
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required String isrc,
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required String service,
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required String spotifyId,
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required String trackName,
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required String artistName,
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required String albumName,
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String? albumArtist,
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String? coverUrl,
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required String outputDir,
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required String filenameFormat,
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bool embedLyrics = true,
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bool embedMaxQualityCover = true,
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int trackNumber = 1,
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int discNumber = 1,
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int totalTracks = 1,
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String? releaseDate,
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}) async {
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final request = jsonEncode({
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'isrc': isrc,
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'service': service,
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'spotify_id': spotifyId,
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'track_name': trackName,
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'artist_name': artistName,
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'album_name': albumName,
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'album_artist': albumArtist ?? artistName,
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'cover_url': coverUrl,
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'output_dir': outputDir,
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'filename_format': filenameFormat,
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'embed_lyrics': embedLyrics,
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'embed_max_quality_cover': embedMaxQualityCover,
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'track_number': trackNumber,
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'disc_number': discNumber,
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'total_tracks': totalTracks,
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'release_date': releaseDate ?? '',
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});
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final result = await _channel.invokeMethod('downloadTrack', request);
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Download with automatic fallback to other services
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static Future<Map<String, dynamic>> downloadWithFallback({
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required String isrc,
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required String spotifyId,
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required String trackName,
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required String artistName,
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required String albumName,
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String? albumArtist,
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String? coverUrl,
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required String outputDir,
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required String filenameFormat,
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bool embedLyrics = true,
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bool embedMaxQualityCover = true,
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int trackNumber = 1,
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int discNumber = 1,
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int totalTracks = 1,
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String? releaseDate,
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String preferredService = 'tidal',
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}) async {
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final request = jsonEncode({
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'isrc': isrc,
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'service': preferredService,
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'spotify_id': spotifyId,
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'track_name': trackName,
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'artist_name': artistName,
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'album_name': albumName,
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'album_artist': albumArtist ?? artistName,
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'cover_url': coverUrl,
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'output_dir': outputDir,
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'filename_format': filenameFormat,
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'embed_lyrics': embedLyrics,
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'embed_max_quality_cover': embedMaxQualityCover,
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'track_number': trackNumber,
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'disc_number': discNumber,
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'total_tracks': totalTracks,
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'release_date': releaseDate ?? '',
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});
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final result = await _channel.invokeMethod('downloadWithFallback', request);
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Get download progress
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static Future<Map<String, dynamic>> getDownloadProgress() async {
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final result = await _channel.invokeMethod('getDownloadProgress');
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Set download directory
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static Future<void> setDownloadDirectory(String path) async {
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await _channel.invokeMethod('setDownloadDirectory', {'path': path});
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}
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/// Check if file with ISRC already exists
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static Future<Map<String, dynamic>> checkDuplicate(String outputDir, String isrc) async {
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final result = await _channel.invokeMethod('checkDuplicate', {
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'output_dir': outputDir,
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'isrc': isrc,
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});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Build filename from template
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static Future<String> buildFilename(String template, Map<String, dynamic> metadata) async {
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final result = await _channel.invokeMethod('buildFilename', {
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'template': template,
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'metadata': jsonEncode(metadata),
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});
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return result as String;
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}
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/// Sanitize filename
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static Future<String> sanitizeFilename(String filename) async {
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final result = await _channel.invokeMethod('sanitizeFilename', {
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'filename': filename,
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});
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return result as String;
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}
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/// Fetch lyrics for a track
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static Future<Map<String, dynamic>> fetchLyrics(
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String spotifyId,
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String trackName,
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String artistName,
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) async {
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final result = await _channel.invokeMethod('fetchLyrics', {
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'spotify_id': spotifyId,
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'track_name': trackName,
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'artist_name': artistName,
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});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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/// Get lyrics in LRC format
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static Future<String> getLyricsLRC(
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String spotifyId,
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String trackName,
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String artistName,
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) async {
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final result = await _channel.invokeMethod('getLyricsLRC', {
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'spotify_id': spotifyId,
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'track_name': trackName,
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'artist_name': artistName,
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});
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return result as String;
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}
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/// Embed lyrics into an existing FLAC file
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static Future<Map<String, dynamic>> embedLyricsToFile(
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String filePath,
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String lyrics,
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) async {
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final result = await _channel.invokeMethod('embedLyricsToFile', {
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'file_path': filePath,
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'lyrics': lyrics,
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});
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return jsonDecode(result as String) as Map<String, dynamic>;
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}
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}
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