using System;
using System.Threading;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;

namespace DodgeEm.Model
{
    /// <summary>
    ///     Manages the entire game.
    /// </summary>
    public class GameManager
    {
        #region Data members

        private readonly double backgroundHeight;
        private readonly double backgroundWidth;
        private Canvas gameBoard;
        private WaveManager newManager;
        private DispatcherTimer timer;
        private PlayerManager playerManager;
        private int timeUntilPlayerWins;

        #endregion

        #region Constructors

        /// <summary>
        ///     Initializes a new instance of the <see cref="GameManager" /> class.
        ///     Precondition: backgroundHeight > 0 AND backgroundWidth > 0
        /// </summary>
        /// <param name="backgroundHeight">The backgroundHeight of the game play window.</param>
        /// <param name="backgroundWidth">The backgroundWidth of the game play window.</param>
        public GameManager(double backgroundHeight, double backgroundWidth, Canvas gameBoard)
        {
            if (backgroundHeight <= 0)
            {
                throw new ArgumentOutOfRangeException(nameof(backgroundHeight));
            }

            if (backgroundWidth <= 0)
            {
                throw new ArgumentOutOfRangeException(nameof(backgroundWidth));
            }

            if (gameBoard == null)
            {
                throw new ArgumentNullException(nameof(gameBoard));
            }



            this.backgroundHeight = backgroundHeight;
            this.backgroundWidth = backgroundWidth;
            this.playerManager = new PlayerManager(backgroundHeight, backgroundWidth);
            this.gameBoard = gameBoard;
            this.timer = new DispatcherTimer();
            this.timeUntilPlayerWins = 22;

            this.setUpTimer();


        }

        #endregion

        #region Methods

        /// <summary>
        ///     Initializes the game placing player in the game
        ///     Precondition: background != null
        ///     Postcondition: Game is initialized and ready for play.
        /// </summary>
        public void InitializeGame()
        {
           

            this.playerManager.PlacePlayer(this.gameBoard);
        }

        

        /// <summary>
        ///     Moves the player to the left.
        ///     Precondition: none
        ///     Postcondition: The player has moved left.
        /// </summary>
        public void HandlePlayerLeftMovement()
        {
this.playerManager.MovePlayerLeft();

        }
        
        /// <summary>
        ///     Moves the player to the right.
        ///     Precondition: none
        ///     Postcondition: The player has moved right.
        /// </summary>
        public void HandlePlayerRightMovement()
        {
            this.playerManager.MovePlayerRight();

        }

        /// <summary>
        ///     Moves the player up
        ///     Precondition: none
        ///     Postcondition: The player has moved up.
        /// </summary>
        public void HandlePlayerUpMovement()
        {

            this.playerManager.MovePlayerUp();

        }

        /// <summary>
        ///     Moves the player down
        ///     Precondition: none
        ///     Postcondition: The player has moved down.
        /// </summary>
        public void HandlePlayerDownMovement()
        {
            this.playerManager.MovePlayerDown();
        }

        private void setUpTimer()
        {
            this.timer.Interval = TimeSpan.FromSeconds(this.timeUntilPlayerWins);
            this.timer.Tick += this.timerOnTick;
            this.timer.Start();
        }

        private void timerOnTick(object sender, object e)
        {

            if (this.timeUntilPlayerWins == 15)
            {
                this.newManager.createEnemy();
            }
            this.timeUntilPlayerWins--;
            System.Diagnostics.Debug.WriteLine(this.timeUntilPlayerWins);


        }
        #endregion
    }
}