Исправление: том ./mods:/lampac/mods в compose и копии 10 модулей с enable:true; конфиг без SkipModules

This commit is contained in:
2026-10-02 12:11:49 +03:00
parent 8dcbc6bc52
commit 7b8e28b3bf
151 changed files with 68625 additions and 44 deletions
@@ -0,0 +1,753 @@
using System.Globalization;
using System.Text;
using System.Text.RegularExpressions;
namespace Music;
public static class MusicRadioService
{
static readonly TimeSpan searchCacheTtl = TimeSpan.FromHours(6);
static readonly TimeSpan radioTimeout = TimeSpan.FromSeconds(8);
const int maxSeedArtists = 5;
const int providerQueryLimit = 12;
const int maxPoolPerArtist = 24;
const string cacheVersion = "radio-v3-metadata";
public static async Task<MusicRadioResponse> GetAsync(string profileId, MusicRadioRequest request, int limit = 20, CancellationToken cancellationToken = default)
{
request ??= new MusicRadioRequest();
limit = Math.Clamp(limit, 5, 30);
var seeds = NormalizeTrackList(request.seeds);
var exclude = NormalizeTrackList(request.exclude);
if (seeds.Count == 0)
seeds = exclude.TakeLast(Math.Min(5, exclude.Count)).ToList();
var artists = ExtractSeedArtists(seeds);
if (artists.Count == 0)
return Unavailable("Недостаточно данных для радио.");
using var timeoutCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
timeoutCts.CancelAfter(radioTimeout);
// сиды исключаем всегда, даже если клиент прислал пустой exclude —
// иначе радио может вернуть сам сид-трек под другим id
var excludedIds = new HashSet<string>(exclude.Concat(seeds).Select(i => i.id).Where(i => !string.IsNullOrWhiteSpace(i)), StringComparer.OrdinalIgnoreCase);
var excludedKeys = new HashSet<string>(exclude.Concat(seeds).Select(BuildTrackDedupeKey).Where(i => !string.IsNullOrWhiteSpace(i)), StringComparer.OrdinalIgnoreCase);
var excludedTitles = new HashSet<string>(exclude.Concat(seeds).Select(BuildTrackTitleKey).Where(i => !string.IsNullOrWhiteSpace(i)), StringComparer.OrdinalIgnoreCase);
try
{
foreach (var recent in await MusicPlaybackHistoryService.GetRecentAsync(profileId, 150, timeoutCts.Token))
{
if (recent == null || recent.played_at.ToUniversalTime() < DateTime.UtcNow.AddDays(-1))
continue;
if (!string.IsNullOrWhiteSpace(recent.track?.id))
excludedIds.Add(recent.track.id);
string key = BuildTrackDedupeKey(recent.track);
if (!string.IsNullOrWhiteSpace(key))
excludedKeys.Add(key);
string titleKey = BuildTrackTitleKey(recent.track);
if (!string.IsNullOrWhiteSpace(titleKey))
excludedTitles.Add(titleKey);
}
}
catch (OperationCanceledException) when (!cancellationToken.IsCancellationRequested)
{
}
var output = new List<MusicTrack>();
var outputIds = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
var outputKeys = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
var outputTitles = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
// «шумные» слова допустимы в кандидате, только если были в самом сиде
// (слушаешь remix — получай remix, иначе это мусор)
var seedNoisyWords = CollectSeedNoisyWords(seeds);
// script-affinity включаем только когда ВЕСЬ сид-контекст кириллический:
// при Any смешанная очередь (Eminem + Miyagi) резала бы латинские
// кандидаты целиком, включая related-пул латинского сида
bool requireCyrillic = seeds.Count > 0
&& seeds.All(seed => ContainsCyrillic(seed?.title) || ContainsCyrillic(seed?.artist_name));
// слой 1: рекомендации SoundCloud ПО ТРЕКУ (related/station) — живое
// радио вместо «топ треков артиста»; artist-пулы остаются как backfill
var relatedTasks = SoundCloudSupport.IsDiscoveryEnabled
? seeds.Take(3).Select(seed => LoadRelatedPoolAsync(seed, timeoutCts.Token)).ToList()
: new List<Task<List<MusicTrack>>>();
try
{
await Task.WhenAll(relatedTasks);
}
catch
{
}
static List<List<MusicTrack>> CollectPools(IEnumerable<Task<List<MusicTrack>>> tasks) => tasks
.Where(task => task.IsCompletedSuccessfully)
.Select(task => task.Result ?? new List<MusicTrack>())
.Where(pool => pool.Count > 0)
.ToList();
FillRoundRobin(CollectPools(relatedTasks), output, limit, seedNoisyWords, requireCyrillic, excludedIds, excludedKeys, excludedTitles, outputIds, outputKeys, outputTitles);
if (output.Count < limit)
{
// Backfill is intentionally lazy: if SoundCloud related/station gave
// enough tracks, do not spend requests on generic artist search.
var artistTasks = artists.Select(artist => LoadArtistPoolAsync(artist, timeoutCts.Token)).ToList();
try
{
await Task.WhenAll(artistTasks);
}
catch
{
}
FillRoundRobin(CollectPools(artistTasks), output, limit, seedNoisyWords, requireCyrillic, excludedIds, excludedKeys, excludedTitles, outputIds, outputKeys, outputTitles);
}
return output.Count >= Math.Min(limit, 8)
? Available(output)
: Unavailable("Радио не нашло достаточно похожих треков.");
}
// round-robin по пулам: 1-й трек каждого пула, потом 2-е и т.д. — иначе
// первый пул целиком заполняет лимит и «радио» вырождается в один источник
// (internal: переиспользуется MusicDailyMixService для «Миксов недели»)
internal static void FillRoundRobin(
List<List<MusicTrack>> pools,
List<MusicTrack> output,
int limit,
HashSet<string> seedNoisyWords,
bool requireCyrillic,
HashSet<string> excludedIds,
HashSet<string> excludedKeys,
HashSet<string> excludedTitles,
HashSet<string> outputIds,
HashSet<string> outputKeys,
HashSet<string> outputTitles,
Dictionary<string, int> outputArtistCounts = null,
int maxTracksPerArtist = 0)
{
for (int position = 0; output.Count < limit; position++)
{
bool anyLeft = false;
foreach (var pool in pools)
{
if (position >= pool.Count)
continue;
anyLeft = true;
var candidate = NormalizeCandidateMetadata(pool[position]);
if (maxTracksPerArtist > 0
&& outputArtistCounts != null
&& !CanAddArtistCandidate(candidate, outputArtistCounts, maxTracksPerArtist))
{
continue;
}
if (!AcceptCandidate(candidate, seedNoisyWords, requireCyrillic, excludedIds, excludedKeys, excludedTitles, outputIds, outputKeys, outputTitles))
continue;
candidate.auto_radio = true;
output.Add(candidate);
AddArtistCandidate(candidate, outputArtistCounts);
if (output.Count >= limit)
break;
}
if (!anyLeft)
break;
}
}
static bool CanAddArtistCandidate(MusicTrack track, Dictionary<string, int> counts, int maxTracksPerArtist)
{
string key = BuildArtistBucketKey(track);
if (string.IsNullOrWhiteSpace(key))
return true;
return !counts.TryGetValue(key, out int count) || count < maxTracksPerArtist;
}
static void AddArtistCandidate(MusicTrack track, Dictionary<string, int> counts)
{
if (counts == null)
return;
string key = BuildArtistBucketKey(track);
if (string.IsNullOrWhiteSpace(key))
return;
counts[key] = counts.TryGetValue(key, out int count) ? count + 1 : 1;
}
static string BuildArtistBucketKey(MusicTrack track)
{
// Структурированный список хранит primary artist первым. Иначе
// "Artist, Guest" и "Artist" попадают в разные bucket'ы и обходят artist-cap.
string artist = CleanupArtistName(track?.artists?.FirstOrDefault());
if (string.IsNullOrWhiteSpace(artist))
artist = CleanupArtistName(track?.artist_name);
return string.IsNullOrWhiteSpace(artist)
? string.Empty
: MusicMapSupport.NormalizeName(artist);
}
static MusicRadioResponse Available(List<MusicTrack> tracks) => new()
{
available = true,
tracks = tracks ?? new List<MusicTrack>()
};
static MusicRadioResponse Unavailable(string message) => new()
{
available = false,
message = message
};
static List<MusicTrack> NormalizeTrackList(IEnumerable<MusicTrack> tracks)
{
var result = new List<MusicTrack>();
var seen = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
foreach (var track in tracks ?? Enumerable.Empty<MusicTrack>())
{
if (track == null)
continue;
string id = (track.id ?? string.Empty).Trim();
string key = !string.IsNullOrWhiteSpace(id)
? id
: BuildTrackDedupeKey(track);
if (string.IsNullOrWhiteSpace(key) || !seen.Add(key))
continue;
if (!string.IsNullOrWhiteSpace(id))
track.id = id;
result.Add(track);
}
return result;
}
static List<string> ExtractSeedArtists(IEnumerable<MusicTrack> seeds)
{
var artists = new List<string>();
var seen = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
foreach (var track in seeds ?? Enumerable.Empty<MusicTrack>())
{
foreach (var artist in EnumerateTrackArtists(track))
{
string value = CleanupArtistName(artist);
if (string.IsNullOrWhiteSpace(value) || !seen.Add(NormalizeText(value)))
continue;
artists.Add(value);
if (artists.Count >= maxSeedArtists)
return artists;
}
}
return artists;
}
static IEnumerable<string> EnumerateTrackArtists(MusicTrack track)
{
if (!string.IsNullOrWhiteSpace(track?.artist_name))
yield return track.artist_name;
foreach (var artist in track?.artists ?? new List<string>())
{
if (!string.IsNullOrWhiteSpace(artist))
yield return artist;
}
}
internal static string CleanupArtistName(string value)
{
value = (value ?? string.Empty).Trim();
if (string.IsNullOrWhiteSpace(value))
return string.Empty;
value = Regex.Replace(value, @"\s+(feat\.?|ft\.?|featuring|with|vs\.?)\s+.*$", "", RegexOptions.IgnoreCase);
value = Regex.Replace(value, @"\s+", " ").Trim();
return value;
}
internal static Task<List<MusicTrack>> LoadRelatedPoolAsync(MusicTrack seed, CancellationToken cancellationToken)
{
string artist = CleanupArtistName(seed?.artist_name);
string title = (seed?.title ?? string.Empty).Trim();
if (string.IsNullOrWhiteSpace(artist) || string.IsNullOrWhiteSpace(title))
return Task.FromResult(new List<MusicTrack>());
string query = $"{artist} {title}";
return LoadCachedTracksAsync(
SoundCloudSupport.DiscoveryProviderId,
query,
token => SoundCloudSupport.FindRelatedTracksByQueryAsync(query, artist, title, maxPoolPerArtist, token),
cancellationToken,
cacheType: "radio_related",
cacheLimit: maxPoolPerArtist);
}
internal static async Task<List<MusicTrack>> LoadArtistPoolAsync(
string artist,
CancellationToken cancellationToken,
bool requireConfirmedArtist = false)
{
var tasks = new List<Task<List<MusicTrack>>>();
string cacheType = requireConfirmedArtist ? "radio_tracks_confirmed" : "radio_tracks";
if (YouTubeMusicSearchSupport.IsSearchEnabled)
tasks.Add(LoadCachedTracksAsync(
YouTubeMusicSearchSupport.ProviderId,
artist,
token => YouTubeMusicSearchSupport.SearchTracksByQueryAsync(
artist,
providerQueryLimit,
token,
artist,
requireConfirmedArtist),
cancellationToken,
cacheType));
if (SoundCloudSupport.IsDiscoveryEnabled)
tasks.Add(LoadCachedTracksAsync(
SoundCloudSupport.DiscoveryProviderId,
artist,
token => SoundCloudSupport.SearchTracksByQueryAsync(artist, providerQueryLimit, token),
cancellationToken,
cacheType));
if (tasks.Count == 0)
return new List<MusicTrack>();
try
{
await Task.WhenAll(tasks);
}
catch
{
}
var candidates = tasks
.Where(i => i.IsCompletedSuccessfully)
.SelectMany(i => i.Result ?? new List<MusicTrack>())
.Select(track => NormalizeArtistPoolCandidate(track, artist, !requireConfirmedArtist))
.Where(i => i != null)
.Take(maxPoolPerArtist)
.ToList();
if (requireConfirmedArtist && !candidates.Any(IsConfirmedExternalArtistEvidence))
return new List<MusicTrack>();
return candidates;
}
static bool IsConfirmedExternalArtistEvidence(MusicTrack track)
{
if ((track?.id ?? string.Empty).StartsWith("youtube:", StringComparison.OrdinalIgnoreCase))
return true;
return (track?.id ?? string.Empty).StartsWith("soundcloud:", StringComparison.OrdinalIgnoreCase)
&& MusicIsrc.Normalize(track.isrc) != null;
}
static MusicTrack NormalizeArtistPoolCandidate(MusicTrack track, string requestedArtist, bool allowTitlePrefix)
{
track = NormalizeCandidateMetadata(track);
string artist = CleanupArtistName(requestedArtist);
if (track == null || string.IsNullOrWhiteSpace(artist))
return track;
string requested = NormalizeText(artist);
string actual = NormalizeText(track.artist_name);
string title = NormalizeText(track.title);
if (string.IsNullOrWhiteSpace(requested))
return track;
if (!string.IsNullOrWhiteSpace(actual)
&& (actual == requested
|| actual.Contains(requested, StringComparison.OrdinalIgnoreCase)
|| (actual.Length >= 4 && requested.Contains(actual, StringComparison.OrdinalIgnoreCase))))
{
// SoundCloud/YouTube sometimes expose channel names like
// "032 stas mikhaylov"; if the target artist is clearly embedded,
// keep the candidate but display the canonical artist name.
if (actual != requested)
{
track.artist_name = artist;
track.artists = new List<string> { artist };
}
return track;
}
if (allowTitlePrefix
&& !string.IsNullOrWhiteSpace(title)
&& title.StartsWith(requested + " ", StringComparison.OrdinalIgnoreCase))
{
track.artist_name = artist;
track.artists = new List<string> { artist };
track.title = StripLeadingArtistFromTitle(track.title, artist);
return track;
}
return null;
}
static string StripLeadingArtistFromTitle(string title, string artist)
{
if (string.IsNullOrWhiteSpace(title) || string.IsNullOrWhiteSpace(artist))
return title;
string pattern = @"^\s*" + Regex.Escape(artist.Trim()) + @"\s*(?:[-–—:]|&)?\s*";
string stripped = Regex.Replace(title, pattern, "", RegexOptions.IgnoreCase).Trim();
return string.IsNullOrWhiteSpace(stripped) ? title : stripped;
}
static async Task<List<MusicTrack>> LoadCachedTracksAsync(string providerId, string query, Func<CancellationToken, Task<List<MusicTrack>>> factory, CancellationToken cancellationToken, string cacheType = "radio_tracks", int cacheLimit = providerQueryLimit)
{
try
{
string key = $"{cacheVersion}|{providerId}|{cacheLimit}|{NormalizeText(query)}";
return await MusicMetadataCacheService.GetOrCreateAsync(
providerId,
cacheType,
key,
searchCacheTtl,
() => factory(cancellationToken),
cancellationToken
) ?? new List<MusicTrack>();
}
catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
{
throw;
}
catch
{
return new List<MusicTrack>();
}
}
// «шумные» слова в названии кандидата допустимы только если встречались
// в самих сидах: слушаешь remix/nightcore — радио вправе их предлагать
static readonly string[] conditionalNoisyWords =
{
"cover", "karaoke", "sped up", "slowed", "nightcore", "remix",
"8d audio", "bass boosted", "reverb", "edit", "mashup",
"type beat", "freestyle"
};
internal static HashSet<string> CollectSeedNoisyWords(IEnumerable<MusicTrack> seeds)
{
var allowed = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
foreach (var seed in seeds ?? Enumerable.Empty<MusicTrack>())
{
string padded = $" {NormalizeNoiseText(seed?.title)} ";
foreach (var word in conditionalNoisyWords)
{
if (padded.Contains($" {word} ", StringComparison.OrdinalIgnoreCase))
allowed.Add(word);
}
}
return allowed;
}
static bool AcceptCandidate(
MusicTrack track,
HashSet<string> seedNoisyWords,
bool requireCyrillic,
HashSet<string> excludedIds,
HashSet<string> excludedKeys,
HashSet<string> excludedTitles,
HashSet<string> outputIds,
HashSet<string> outputKeys,
HashSet<string> outputTitles)
{
if (track == null || string.IsNullOrWhiteSpace(track.id) || string.IsNullOrWhiteSpace(track.title))
return false;
string id = track.id.Trim();
string key = BuildTrackDedupeKey(track);
string titleKey = BuildTrackTitleKey(track);
if (!LooksLikeStandaloneSong(track, titleKey, seedNoisyWords, requireCyrillic))
return false;
if (excludedIds.Contains(id) || outputIds.Contains(id))
return false;
if (!string.IsNullOrWhiteSpace(key) && (excludedKeys.Contains(key) || outputKeys.Contains(key)))
return false;
if (!string.IsNullOrWhiteSpace(titleKey) && (excludedTitles.Contains(titleKey) || outputTitles.Contains(titleKey)))
return false;
outputIds.Add(id);
if (!string.IsNullOrWhiteSpace(key))
outputKeys.Add(key);
if (!string.IsNullOrWhiteSpace(titleKey))
outputTitles.Add(titleKey);
return true;
}
internal static MusicTrack NormalizeCandidateMetadata(MusicTrack track)
{
if (track == null)
return track;
// Provider/cache objects can be reused by radio and weekly mixes. Never
// rewrite those shared instances while preparing one response.
var result = CloneTrack(track);
result.title = CleanupCandidateTitle(result.title);
if (string.IsNullOrWhiteSpace(result.title)
|| !TrySplitArtistTitle(result.title, out var artist, out var title))
{
return result;
}
string currentArtist = CleanupArtistName(result.artist_name);
if (!string.IsNullOrWhiteSpace(currentArtist)
&& !IsGenericUploaderName(currentArtist)
&& !ArtistNamesMatch(currentArtist, artist))
{
// Structured provider metadata is more trustworthy than an
// unverified multi-dash title. Keeping it intact also preserves an
// exact provider id for playback instead of inventing a new pair.
return result;
}
result.artist_name = artist;
result.artists = new List<string> { artist };
result.title = CleanupCandidateTitle(title);
return result;
}
static bool TrySplitArtistTitle(string rawTitle, out string artist, out string title)
{
artist = null;
title = null;
var match = Regex.Match(
rawTitle ?? string.Empty,
@"^\s*(?<artist>.{2,80}?)\s+[-–—]\s+(?<title>.{2,180})\s*$");
if (!match.Success)
return false;
string artistPart = match.Groups["artist"].Value;
string titlePart = match.Groups["title"].Value;
artistPart = Regex.Replace(artistPart, @"^\s*[\d#._-]+\s*", "").Trim();
titlePart = Regex.Replace(titlePart, @"^\s*[\d#._-]+\s*", "").Trim();
if (string.IsNullOrWhiteSpace(artistPart) || string.IsNullOrWhiteSpace(titlePart))
return false;
if (NormalizeText(artistPart).Length < 2 || NormalizeText(titlePart).Length < 2)
return false;
if (artistPart.Length > 80 || titlePart.Length > 120)
return false;
artist = artistPart;
title = titlePart;
return true;
}
static bool ArtistNamesMatch(string left, string right)
{
string a = NormalizeText(CleanupArtistName(left));
string b = NormalizeText(CleanupArtistName(right));
return !string.IsNullOrWhiteSpace(a)
&& !string.IsNullOrWhiteSpace(b)
&& (a == b
|| (a.Length >= 4 && b.Contains(a, StringComparison.Ordinal))
|| (b.Length >= 4 && a.Contains(b, StringComparison.Ordinal)));
}
static bool IsGenericUploaderName(string value)
{
string normalized = NormalizeText(value);
return normalized is "soundcloud" or "youtube" or "unknown" or "various artists";
}
static string CleanupCandidateTitle(string value)
{
value = Regex.Replace(value ?? string.Empty, @"\s+", " ").Trim();
if (string.IsNullOrWhiteSpace(value))
return value;
bool filename = Regex.IsMatch(value, @"\.(aac|flac|m4a|mp3|ogg|opus|wav|webm)\s*$", RegexOptions.IgnoreCase);
if (!filename)
return value;
value = Regex.Replace(value, @"\.(aac|flac|m4a|mp3|ogg|opus|wav|webm)\s*$", string.Empty, RegexOptions.IgnoreCase);
value = Regex.Replace(value, @"_+", " ");
value = Regex.Replace(value, @"^\s*[-–—.]+\s*|\s*[-–—.]+\s*$", string.Empty);
return Regex.Replace(value, @"\s+", " ").Trim();
}
static MusicTrack CloneTrack(MusicTrack track)
{
return new MusicTrack
{
id = track.id,
title = track.title,
artist_id = track.artist_id,
artist_name = track.artist_name,
artists = track.artists?.ToList() ?? new List<string>(),
album_id = track.album_id,
album_title = track.album_title,
isrc = track.isrc,
duration_ms = track.duration_ms,
track_number = track.track_number,
disc_number = track.disc_number,
date = track.date,
search_score = track.search_score,
images = track.images?.ToList() ?? new List<MusicImage>(),
provider_refs = track.provider_refs?.ToList() ?? new List<MusicProviderRef>(),
auto_radio = track.auto_radio
};
}
static bool LooksLikeStandaloneSong(MusicTrack track, string titleKey, HashSet<string> seedNoisyWords, bool requireCyrillic)
{
int durationMs = track.duration_ms ?? 0;
if (durationMs > 0 && (durationMs < 45_000 || durationMs > 12 * 60_000))
return false;
if (string.IsNullOrWhiteSpace(titleKey))
return false;
string padded = $" {titleKey} ";
string noisePadded = $" {NormalizeNoiseText(track?.title)} ";
if (requireCyrillic && !ContainsCyrillic(track?.title) && !ContainsCyrillic(track?.artist_name))
return false;
string[] noisy =
{
" nonstop ",
" megamix ",
" full album ",
" playlist ",
" reaction ",
" podcast ",
" interview ",
" instrumental beat ",
" dj set ",
" live set ",
" preview ",
" prod "
};
if (noisy.Any(word => padded.Contains(word, StringComparison.OrdinalIgnoreCase) || noisePadded.Contains(word, StringComparison.OrdinalIgnoreCase)))
return false;
foreach (var word in conditionalNoisyWords)
{
if (seedNoisyWords != null && seedNoisyWords.Contains(word))
continue;
if (noisePadded.Contains($" {word} ", StringComparison.OrdinalIgnoreCase))
return false;
}
return true;
}
internal static bool ContainsCyrillic(string value)
=> !string.IsNullOrWhiteSpace(value) && value.Any(c => c is >= '\u0400' and <= '\u04FF');
static string BuildTrackDedupeKey(MusicTrack track)
{
if (track == null)
return string.Empty;
string artist = NormalizeText(track.artist_name);
string title = BuildTrackTitleKey(track);
return string.IsNullOrWhiteSpace(title)
? string.Empty
: $"{artist}|{title}";
}
static string BuildTrackTitleKey(MusicTrack track)
{
string rawTitle = track?.title ?? string.Empty;
rawTitle = Regex.Replace(rawTitle, @"^\s*.{1,80}\s+[-–—]\s+", "", RegexOptions.IgnoreCase);
string title = NormalizeText(rawTitle);
string artist = NormalizeText(track?.artist_name);
if (!string.IsNullOrWhiteSpace(artist) && title.StartsWith(artist + " ", StringComparison.OrdinalIgnoreCase))
title = title.Substring(artist.Length).Trim();
foreach (var artistName in track?.artists ?? new List<string>())
{
string normalizedArtist = NormalizeText(artistName);
if (!string.IsNullOrWhiteSpace(normalizedArtist) && title.StartsWith(normalizedArtist + " ", StringComparison.OrdinalIgnoreCase))
title = title.Substring(normalizedArtist.Length).Trim();
}
return title;
}
internal static string NormalizeText(string value)
{
value = RemoveDiacritics((value ?? string.Empty).ToLowerInvariant());
value = Regex.Replace(value, @"\([^)]*\)|\[[^\]]*\]", " ");
value = Regex.Replace(value, @"\b(feat|ft|featuring|official|audio|video|lyrics|lyric|clip|mv|hd|4k)\b", " ", RegexOptions.IgnoreCase);
value = Regex.Replace(value, @"[^a-z0-9а-яёіїєґ]+", " ");
return Regex.Replace(value, @"\s+", " ").Trim();
}
static string NormalizeNoiseText(string value)
{
value = RemoveDiacritics((value ?? string.Empty).ToLowerInvariant());
value = Regex.Replace(value, @"\b(feat|ft|featuring|official|audio|video|lyrics|lyric|clip|mv|hd|4k)\b", " ", RegexOptions.IgnoreCase);
value = Regex.Replace(value, @"[^a-z0-9а-яёіїєґ]+", " ");
return Regex.Replace(value, @"\s+", " ").Trim();
}
static string RemoveDiacritics(string value)
{
if (string.IsNullOrWhiteSpace(value))
return string.Empty;
var normalized = value.Normalize(NormalizationForm.FormD);
var builder = new StringBuilder(normalized.Length);
foreach (var c in normalized)
{
if (CharUnicodeInfo.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark)
builder.Append(c);
}
return builder.ToString().Normalize(NormalizationForm.FormC);
}
}