using System.Numerics;

namespace DaggerFramework.Rendering
{
    public abstract class Renderer
    {
        // INIT
        public abstract void CreateAndInitialize(WindowSettings windowSettings, RendererSettings renderSettings);
        public abstract void Initialize(RendererSettings settings);

        // UTIL
        public abstract bool ShouldRun { get; }

        // WINDOW
        public abstract Vector2 WindowSize { get; }
        public abstract void CreateWindow(string title, Vector2 size);
        public void CreateWindow(WindowSettings windowSettings)
        {
            CreateWindow(windowSettings.Title, windowSettings.Size);
        }
        public abstract void SetWindowTitle(string title);
        public abstract void SetWindowVSync(bool value);
        public abstract void SetTargetFps(int fps);
        public abstract bool WindowShouldClose();
        public abstract void Shutdown();

        // DRAWING
        public abstract void BeginFrame();
        public abstract void EndFrame();
        public abstract void ClearBackground(Color color);
        public abstract double GetFrameTime();
        public abstract int LoadTexture(Texture2d texture);
        public abstract void SetTransform(Vector2 position, float rotation = 0.0f);
        public abstract void SetTransform(Matrix4x4 transform);
        public abstract void DrawCircle(float radius, Color color);
        public abstract void DrawRectangle(Vector2 size, Color color);
        public abstract void DrawDebugText(Vector2 position, string text, int fontSize, Color color);
        public abstract void DrawSdfText(Vector2 position, string text, int fontSize, Color color);
        public abstract void DrawTexture(int id, Color tint);
    }

    public enum Msaa
    {
        None,
        Msaa2x,
        Msaa4x,
        Msaa8x
    }
    public struct RendererSettings
    {
        public Msaa Msaa;
        public bool UseVSync;
        public bool Fullscreen;

        public static RendererSettings Default => new RendererSettings()
        {
            UseVSync = true,
        };
    }

    public struct WindowSettings
    {
        public string Title;
        public Vector2 Size = new Vector2(640, 480);

        public WindowSettings(string title, Vector2 size)
        {
            Title = title;
            Size = size;
        }
    }
}