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using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Globalization;
using System.IO;
using System.Linq;
using Jellyfin.Api.Models.UserDtos;
using LrcParser.Model;
using LrcParser.Parser;
using MediaBrowser.Controller.Entities;
namespace Jellyfin.Api.Helpers
{
/// <summary>
/// Item helper.
/// </summary>
public static class ItemHelper
{
/// <summary>
/// Opens lyrics file, converts to a List of Lyrics, and returns it.
/// </summary>
/// <param name="item">Requested Item.</param>
/// <returns>Collection of Lyrics.</returns>
internal static object? GetLyricData(BaseItem item)
{
List<Lyrics> lyricsList = new List<Lyrics>();
string lrcFilePath = @Path.ChangeExtension(item.Path, "lrc");
// LRC File not found, fallback to TXT file
if (!System.IO.File.Exists(lrcFilePath))
{
string txtFilePath = @Path.ChangeExtension(item.Path, "txt");
if (!System.IO.File.Exists(txtFilePath))
{
return null;
}
var lyricTextData = System.IO.File.ReadAllText(txtFilePath);
string[] lyricTextLines = lyricTextData.Split(Environment.NewLine, StringSplitOptions.RemoveEmptyEntries);
foreach (var lyricLine in lyricTextLines)
{
lyricsList.Add(new Lyrics { Text = lyricLine });
}
return new { lyrics = lyricsList };
}
// Process LRC File
Song lyricData;
List<Lyric> sortedLyricData = new List<Lyric>();
var metaData = new ExpandoObject() as IDictionary<string, object>;
string lrcFileContent = System.IO.File.ReadAllText(lrcFilePath);
try
{
LyricParser lrcLyricParser = new LrcParser.Parser.Lrc.LrcParser();
lyricData = lrcLyricParser.Decode(lrcFileContent);
var _metaData = lyricData.Lyrics
.Where(x => x.TimeTags.Count == 0)
.Where(x => x.Text.StartsWith("[", StringComparison.Ordinal) && x.Text.EndsWith("]", StringComparison.Ordinal))
.Select(x => x.Text)
.ToList();
foreach (string dataRow in _metaData)
{
var data = dataRow.Split(":");
string newPropertyName = data[0].Replace("[", string.Empty, StringComparison.Ordinal);
string newPropertyValue = data[1].Replace("]", string.Empty, StringComparison.Ordinal);
metaData.Add(newPropertyName, newPropertyValue);
}
sortedLyricData = lyricData.Lyrics.Where(x => x.TimeTags.Count > 0).OrderBy(x => x.TimeTags.ToArray()[0].Value).ToList();
}
catch
{
return null;
}
if (lyricData == null)
{
return null;
}
for (int i = 0; i < sortedLyricData.Count; i++)
{
if (sortedLyricData[i].TimeTags.Count > 0)
{
var timeData = sortedLyricData[i].TimeTags.ToArray()[0].Value;
double ticks = Convert.ToDouble(timeData, new NumberFormatInfo()) * 10000;
lyricsList.Add(new Lyrics { Start = Math.Ceiling(ticks), Text = sortedLyricData[i].Text });
}
}
return new { MetaData = metaData, lyrics = lyricsList };
}
}
}
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