82 lines
3.4 KiB
C#
82 lines
3.4 KiB
C#
namespace View_by_Distance.Shared.Models.Stateless.Methods;
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internal abstract class Mapping
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{
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internal static (string?, string?, string?, bool?) GetSegments(int locationDigits, string facesFileNameExtension, string fileName)
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{
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string[] segments = fileName.Split('.');
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string? id;
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string? extensionLowered;
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bool? needsFacesFileNameExtension;
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string? normalizedPixelPercentage;
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if (segments.Length < 4 || $".{segments[3]}" != facesFileNameExtension)
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{
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id = null;
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extensionLowered = null;
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normalizedPixelPercentage = null;
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needsFacesFileNameExtension = null;
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}
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else
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{
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id = segments[0];
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extensionLowered = $".{segments[2]}";
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needsFacesFileNameExtension = segments.Length == 3;
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normalizedPixelPercentage = segments[1].Length == locationDigits ? segments[1] : null;
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}
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return new(id, normalizedPixelPercentage, extensionLowered, needsFacesFileNameExtension);
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}
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private static (int?, int?, List<Models.Face>?) GetReversedDeterministicHashCodeKeysFromSegments(int locationDigits, string facesFileNameExtension, bool idToFacesAny, Dictionary<int, List<Models.Face>> idToFaces, string fileName)
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{
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int? id;
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List<Models.Face>? faces;
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int? normalizedPixelPercentage;
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(string? Id, string? NormalizedPixelPercentage, string? ExtensionLowered, bool? Check) segments = GetSegments(locationDigits, facesFileNameExtension, fileName);
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if (string.IsNullOrEmpty(segments.Id) || string.IsNullOrEmpty(segments.NormalizedPixelPercentage) || string.IsNullOrEmpty(segments.ExtensionLowered) || segments.Check is null)
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{
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id = null;
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faces = null;
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normalizedPixelPercentage = null;
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}
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else if (!int.TryParse(segments.Id, out int idValue) || !int.TryParse(segments.NormalizedPixelPercentage, out int normalizedPixelPercentageValue))
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{
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id = null;
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faces = null;
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normalizedPixelPercentage = null;
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}
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else
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{
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id = idValue;
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normalizedPixelPercentage = segments.NormalizedPixelPercentage.Length == locationDigits ? normalizedPixelPercentageValue : null;
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if (!idToFacesAny || !idToFaces.ContainsKey(idValue))
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faces = null;
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else
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faces = idToFaces[idValue];
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}
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return new(id, normalizedPixelPercentage, faces);
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}
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internal static (int?, int?, List<Models.Face>?) GetReversedDeterministicHashCodeKey(int locationDigits, string facesFileNameExtension, bool idToFacesAny, Dictionary<int, List<Models.Face>> idToFaces, string file)
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{
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int? id;
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List<Models.Face>? faces;
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int? normalizedPixelPercentage;
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string fileName = Path.GetFileName(file);
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if (fileName.Length < 2 || fileName[1..].Contains('-'))
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{
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id = null;
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faces = null;
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normalizedPixelPercentage = null;
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}
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else
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(id, normalizedPixelPercentage, faces) = GetReversedDeterministicHashCodeKeysFromSegments(
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locationDigits,
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facesFileNameExtension,
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idToFacesAny,
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idToFaces,
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fileName);
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return new(id, normalizedPixelPercentage, faces);
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}
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} |