SpriteDefinitionSource.cs

using Newtonsoft.Json;
 
namespace Gondwana.Drawing.Sprites.GSPR;

public sealed class SpriteDefinitionSource
{
    [JsonConstructor]
    private SpriteDefinitionSource() { }

    [JsonProperty]
    public SpriteDefinitionSourceKind Kind { get; private init; }

    [JsonProperty]
    public string? GsprFilePath { get; private init; }

    [JsonProperty]
    public string? AssetsFilePath { get; private init; }

    [JsonProperty]
    public string? AssetEntryName { get; private init; }

    public static SpriteDefinitionSource LooseDefinitionFile(string gsprFilePath)
    {
        if (string.IsNullOrWhiteSpace(gsprFilePath))
            throw new ArgumentException("GSPR file path must be a non-empty string.", nameof(gsprFilePath));
 
        return new SpriteDefinitionSource
        {
            Kind = SpriteDefinitionSourceKind.LooseDefinitionFile,
            GsprFilePath = gsprFilePath
        };
    }

    public static SpriteDefinitionSource PackedDefinitionFile(string assetsFilePath, string assetEntryName)
    {
        if (string.IsNullOrWhiteSpace(assetsFilePath))
            throw new ArgumentException("Assets file path must be a non-empty string.", nameof(assetsFilePath));
 
        if (string.IsNullOrWhiteSpace(assetEntryName))
            throw new ArgumentException("Asset entry name must be a non-empty string.", nameof(assetEntryName));
 
        return new SpriteDefinitionSource
        {
            Kind = SpriteDefinitionSourceKind.PackedDefinitionFile,
            AssetsFilePath = assetsFilePath,
            AssetEntryName = assetEntryName
        };
    }

    public static SpriteDefinitionSource Generated() =>
        new()
        {
            Kind = SpriteDefinitionSourceKind.Generated
        };

    public static SpriteDefinitionSource None() =>
        new()
        {
            Kind = SpriteDefinitionSourceKind.None
        };
}