using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace SuperPolarity
{
    class NameChooserWidget : Widget
    {
        int CurrentIndex;
        bool Lock;
        int LockRate;
        int CurrentTime;

        public NameChooserWidget(SuperPolarity game, Vector2 position)
            : base(game, position)
        {
            AppendChild(new LetterChooseWidget(game, new Vector2(position.X, position.Y)));
            AppendChild(new LetterChooseWidget(game, new Vector2(position.X + 32, position.Y)));
            AppendChild(new LetterChooseWidget(game, new Vector2(position.X + 64, position.Y)));
            CurrentIndex = 0;
            Children[CurrentIndex].Activate();
            LockRate = 300;
            CurrentTime = 0;

            InputController.Bind("moveX", HandleMovement);
        }

        public override void Update(GameTime gameTime)
        {
            base.Update(gameTime);

            CurrentTime = CurrentTime + gameTime.ElapsedGameTime.Milliseconds;
            if (CurrentTime > LockRate)
            {
                CurrentTime = 0;
                Lock = false;
            }

            foreach (LetterChooseWidget widget in Children)
            {
                widget.Update(gameTime);
            }
        }

        public void HandleMovement(float value)
        {
            if (value > 0.8 && !Lock)
            {
                Children[CurrentIndex].Deactivate();
                CurrentIndex = CurrentIndex + 1;

                if (CurrentIndex > Children.Count - 1)
                {
                    CurrentIndex = 0;
                }

                Lock = true;
            }

            if (value < -0.8 && !Lock)
            {
                Children[CurrentIndex].Deactivate();
                CurrentIndex = CurrentIndex - 1;

                if (CurrentIndex < 0)
                {
                    CurrentIndex = Children.Count - 1;
                }

                Lock = true;
            }

            Children[CurrentIndex].Activate();
        }

        public string Value()
        {
            var name = "";

            foreach (LetterChooseWidget letter in Children)
            {
                name = name + letter.Value();
            }

            return name;
        }

        public override void Draw(SpriteBatch spriteBatch)
        {
            foreach (LetterChooseWidget widget in Children)
            {
                widget.Draw(spriteBatch);
            }
        }
    }
}