using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Input.Touch;
using Penguloon.Scenes;
using System;
using System.Collections.Generic;

namespace Penguloon.Scenes
{
    public class LoadingScene : SceneBase
    {
        public LoadingScene(Main main) : base(main)
        {

        }

        public override void CreateControls()
        {
            
        }

        public override void Draw(float deltaTime)
        {
            base.Draw(deltaTime);

            // if were still loading assets for loading screen, return
            if (!ContentManager.DonePreLoading) return;

            // background
            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/background"),
                destinationRectangle: new Rectangle(0, 0, (int)StaticUIValues.ScreenViewport.X, (int)StaticUIValues.ScreenViewport.Y));

            DrawSnowflakes();

            // draw progressbar
            DrawProgressbar();

            // draw title
            DrawText(ContentManager.GetFont(StaticUIValues.LoadingScreenTitle), "Penguloon", new Vector2(0, 100),
                StaticUIValues.ScreenViewport, TextAllignment.CenterTop, Color.Red, Color.Black, 4);
        }

        /// <summary>
        /// Draw progress bar.
        /// </summary>
        private void DrawProgressbar()
        {
            int barWidth = (int)(StaticUIValues.LoadingProgressbarSize.X * ContentManager.LoadPercentageF);

            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/red"),
                destinationRectangle: new Rectangle(StaticUIValues.LoadingProgressbarValuePosition.ToPoint(),
                new Point(barWidth - 10, (int)StaticUIValues.LoadingProgressbarSize.Y - 10)));

            Main.SpriteBatch.Draw(ContentManager.GetTexture("UI/progressbar"),
                destinationRectangle: new Rectangle(StaticUIValues.LoadingProgressbarPosition.ToPoint(),
                StaticUIValues.LoadingProgressbarSize.ToPoint()));
        }

        public override void Update(float deltaTime, TouchLocation[] touchLocations)
        {
            base.Update(deltaTime, touchLocations);

            // if loading is completed
            if (ContentManager.DoneLoading)
            {
                SceneManager.MenuScene = new MenuScene(Main);
                SceneManager.SelectedScene = SelectedScene.Menu;
            }
        }
    }
}