using System;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class TurnHandler : MonoBehaviour
{
    #region Statication

    public static TurnHandler instance;

    private void Awake()
    {
        if (instance != null && instance != this)
        {
            Destroy(gameObject);
            return;
        }
        instance = this;
    }

    #endregion
    
    public List<PlayerEntity> playerEntities = new();
    public List<Enemy> enemyEntities = new();
    public enum GameState {PlayerTurn, EnemyTurn}
    public GameState currentGameState = GameState.PlayerTurn;

    private int currentEnemy = 0;

    private void SortEnemies()
    {
        enemyEntities = enemyEntities.OrderBy(o=>o.turnSpeed).ToList();
    }

    private void Start()
    {
        SortEnemies();
    }

    public void UpdateTurns()
    {
        if (currentGameState == GameState.PlayerTurn)
        {
            bool allDone = true;
            foreach (PlayerEntity player in playerEntities)
            {
                if (!player.hasMoved || !player.hasAttacked)
                {
                    allDone = false;
                }
            }
            if (allDone)
            {
                currentGameState = GameState.EnemyTurn;
                enemyEntities[0].StartTurn();
            }
        }
        else if (currentGameState == GameState.EnemyTurn)
        {
            enemyEntities[currentEnemy].StartTurn();
            currentEnemy++;
            if (currentEnemy > enemyEntities.Count - 1)
            {
                currentGameState = GameState.PlayerTurn;
                foreach (PlayerEntity player in playerEntities)
                {
                    player.hasMoved = false;
                    player.hasAttacked = false;
                }
            }
        }
    }
}