using Minint.Core.Models;

namespace Minint.Core.Services;

public interface IPaletteService
{
    /// <summary>
    /// Returns the index of <paramref name="color"/> in the document palette.
    /// If the color is not present, appends it and returns the new index.
    /// </summary>
    int EnsureColor(MinintDocument document, RgbaColor color);

    /// <summary>
    /// Finds index of an exact color match, or returns -1 if not found.
    /// </summary>
    int FindColor(MinintDocument document, RgbaColor color);

    /// <summary>
    /// Removes unused colors from the palette and remaps all layer pixel indices.
    /// Index 0 (transparent) is always preserved.
    /// </summary>
    void CompactPalette(MinintDocument document);
}