using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using MonoGameLibrary.Graphics;

namespace FNAF_Clone.GUI;

public class TextUIElement : UIElement {
    public SpriteFont Font { get; set; }
    public string Text{ get; set; } = "";
    public Color Color{ get; set; } = Color.White;
    private Vector2 origin;
    
    public TextUIElement(Point corner1, SpriteFont font, Alignment alignment = Alignment.LEFT) : base(corner1, corner1) {
        Font = font;
        Align(alignment);
    }
    
    public override void Draw(SpriteBatch spriteBatch) {
        base.Draw(spriteBatch);
        align();
        spriteBatch.DrawString(Font, Text, screenSpaceBounds.Item1.ToVector2(), Color, 0, origin, ScaleMultiplier, SpriteEffects.None, 0);
    }

    public void Align(Alignment alignment) {
        switch (alignment){
            case Alignment.LEFT:
                AlignLeft();
                break;
            case Alignment.RIGHT:
                AlignRight();
                break;
            case Alignment.CENTER:
                AlignCenter();
                break;
        }
    }
    
    private void AlignLeft() {
        align = () => origin = Vector2.Zero;
    }
    private void AlignRight() {
        align = () => origin = Font.MeasureString(Text);
    }
    private void AlignCenter() {
        align = () => origin = Font.MeasureString(Text) / 2;
    }

    private Action align;

    public enum Alignment {
        LEFT, RIGHT, CENTER
    }
}