using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MonoGameLibrary;
using MonoGameLibrary.Graphics;
using MonoGameLibrary.Input;

namespace FNAF_Clone.GUI;

public class UIElement {
    
    public bool Active { get; set; } = false;
    public bool Pressable { get; set; } = false;

    private (Point, Point) bounds; // TODO: Change this to support non-rectangular hitboxes
    private List<TextureRegion> textures = new();
    private int currentTextureId = 0;

    private float _scaleMultiplier = 1;
    public float ScaleMultiplier{
        get{
            return _scaleMultiplier;
        }
        set{
            _scaleMultiplier = value;
            LoadPixelScaleMultiplier();
        }
    }
    private float pixelScaleMultiplier = 1;
    private void LoadPixelScaleMultiplier() {
        pixelScaleMultiplier = UIManager.GlobalPixelMultiplier * _scaleMultiplier;
    }
    
    public UIElement(TextureRegion texture, Point position) {
        textures.Add(texture);
        bounds = (position, position + new Point(texture.Width, texture.Height));
        LoadPixelScaleMultiplier();
    }
    public UIElement(TextureRegion[] textures, Point position) {
        this.textures.AddRange(textures);
        bounds = (position, position + new Point(textures[0].Width, textures[0].Height));
        LoadPixelScaleMultiplier();
    }
    
    
    public void SetTexture(int textureId) {
        if (textureId >= textures.Count){
            Console.WriteLine($"WARNING: TEXTURE {textureId} OUT OF BOUNDS");
            return;
        }
            
        currentTextureId = textureId;
    }
    public void Update() {
        
    }

    public bool IsWithinBounds(Point pos) {
        return pos.X >= Math.Min(bounds.Item1.X, bounds.Item2.X) && pos.X <= Math.Max(bounds.Item1.X, bounds.Item2.X) &&
               pos.Y >= Math.Min(bounds.Item1.Y, bounds.Item2.Y) && pos.Y <= Math.Max(bounds.Item1.Y, bounds.Item2.Y);
    }

    public Action OnMousePress{ get; set; } 
    
    // public virtual void OnMousePress() { }
    
    public virtual void OnMouseRelease() { }
    
    public virtual void OnMouseHold() { }

    public void Draw(SpriteBatch spriteBatch) {
        textures[currentTextureId].Draw(spriteBatch, bounds.Item1.ToVector2(), Color.White, 0, Vector2.Zero, pixelScaleMultiplier, SpriteEffects.None, 0);
        // texture.Draw(spriteBatch, bounds.Item1.ToVector2(), Color.White);
    }
}