using System;

namespace Uigenx
{
    /// <summary>Presentation layers, ordered from the world outwards.</summary>
    public enum UgxLayer
    {
        Scene = 0,
        Hud = 1,
        Overlay = 2,
        Modal = 3,
        System = 4,
    }

    public static class UgxLayers
    {
        public const int Count = 5;

        /// <summary>PanelSettings sort order for a layer. Layers are 100 apart so games can slot panels between them.</summary>
        public static float SortOrder(UgxLayer layer) => (int)layer * 100f;

        public static string ToWireName(this UgxLayer layer)
        {
            switch (layer)
            {
                case UgxLayer.Scene: return "scene";
                case UgxLayer.Hud: return "hud";
                case UgxLayer.Overlay: return "overlay";
                case UgxLayer.Modal: return "modal";
                case UgxLayer.System: return "system";
                default: throw new ArgumentOutOfRangeException(nameof(layer));
            }
        }

        public static bool TryParse(string wireName, out UgxLayer layer)
        {
            switch (wireName)
            {
                case "scene": layer = UgxLayer.Scene; return true;
                case "hud": layer = UgxLayer.Hud; return true;
                case "overlay": layer = UgxLayer.Overlay; return true;
                case "modal": layer = UgxLayer.Modal; return true;
                case "system": layer = UgxLayer.System; return true;
                default: layer = UgxLayer.Hud; return false;
            }
        }
    }
}