using System.Globalization;
using System.IO;
using System.Text.RegularExpressions;
using Emby.Naming.Common;
namespace Emby.Naming.AudioBook
{
///
/// Parser class to extract part and/or chapter number from audiobook filename.
///
public class AudioBookFilePathParser
{
private readonly NamingOptions _options;
///
/// Initializes a new instance of the class.
///
/// Naming options containing AudioBookPartsExpressions.
public AudioBookFilePathParser(NamingOptions options)
{
_options = options;
}
///
/// Based on regex determines if filename includes part/chapter number.
///
/// Path to audiobook file.
/// Returns object.
public AudioBookFilePathParserResult Parse(string path)
{
AudioBookFilePathParserResult result = default;
var fileName = Path.GetFileNameWithoutExtension(path);
foreach (var expression in _options.AudioBookPartsExpressions)
{
var match = new Regex(expression, RegexOptions.IgnoreCase).Match(fileName);
if (match.Success)
{
if (!result.ChapterNumber.HasValue)
{
var value = match.Groups["chapter"];
if (value.Success)
{
if (int.TryParse(value.Value, NumberStyles.Integer, CultureInfo.InvariantCulture, out var intValue))
{
result.ChapterNumber = intValue;
}
}
}
if (!result.PartNumber.HasValue)
{
var value = match.Groups["part"];
if (value.Success)
{
if (int.TryParse(value.Value, NumberStyles.Integer, CultureInfo.InvariantCulture, out var intValue))
{
result.PartNumber = intValue;
}
}
}
}
}
return result;
}
}
}