using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using RecrownedAthenaeum.SpecialTypes;
using RecrownedAthenaeum.UI.SkinSystem.Definitions;

namespace RecrownedAthenaeum.UI.SkinSystem
{
    /// <summary>
    /// The output requirements of a skin. This allows for very customized skin systems if needed.
    /// </summary>
    public interface ISkin
    {
        /// <summary>
        /// The texture for the cursor.
        /// </summary>
        Texture2D CursorTexture { get; }

        /// <summary>
        /// Draws a region from the texture atlas.
        /// </summary>
        /// <param name="regionName">Region to draw.</param>
        /// <param name="color">The color to tint the region.</param>
        /// <param name="batch">The batch to use.</param>
        /// <param name="destination">The destination to draw to.</param>
        /// <param name="rotation">The rotation to use in radians.</param>
        /// <param name="origin">The origin for the rotation.</param>
        void Draw(string regionName, string color, SpriteBatch batch, Rectangle destination, float rotation = 0, Vector2 origin = default(Vector2));

        /// <summary>
        /// Returns a <see cref="Color"/> with given name of defined color;
        /// Should use value "default" if <paramref name="name"/> is null.
        /// </summary>
        /// <param name="name">Name of defined color.</param>
        /// <returns>The defined color based on the name given.</returns>
        Color GetColor(string name = null);

        /// <summary>
        /// Returns a <see cref="TextureAtlas.Region"/> with given name of region.
        /// </summary>
        /// <param name="name">Name of region.</param>
        /// <returns>The region corresponding to the name.</returns>
        TextureAtlas.Region GetTextureAtlasRegion(string name);

        /// <summary>
        /// Returns the proper definition for the given parameters or throws exception in the case the requested definition does not exist.
        /// </summary>
        /// <typeparam name="T">Convenience to cast to the needed definition type.</typeparam>
        /// <param name="definitionName">The name of the definition. Default is null and will be replaced with "default" for name.</param>
        /// <returns>The definition cast to T.</returns>
        T ObtainDefinition<T>(string definitionName = null) where T : SkinDefinitionData;
    }
}