using System.Threading;
using Alchemy.Inspector;
using Code.Audio;
using Code.UI;
using Cysharp.Threading.Tasks;
using UnityEngine;

namespace Code.GameplayServices
{
    public class GameplayManager : MonoBehaviour
    {
        public static GameplayManager Instance { get; private set; }

        private bool _onPause = true;
        public bool OnPause => _onPause;
        
        [TabGroup("Gameplay")]
        [SerializeField] [Range(0f, 30f)] private float gameSpeed;
        [TabGroup("Gameplay")]
        [SerializeField] [Range(0f, 30f)] private float gameSpeedIncrement;
        
        [TabGroup("UI")]
        [SerializeField] 
        private RestartPanel restartPanel;
        
        private float _currentGameSpeed;
        private float _incrementedGameSpeed;
        public float GameSpeed => _currentGameSpeed > 0.1f ? _currentGameSpeed + _incrementedGameSpeed : _currentGameSpeed;
        
        private void Awake()
        {
            Instance = this;
            _currentGameSpeed = gameSpeed;
        }

        public void RestartGame()
        {
            ResetGame();
            ResumeGame();
        }
        public void PlayerDied()
        {
            PauseGame();
            restartPanel.gameObject.SetActive(true);
            PlayerScoreService.Instance.ResetScore();
            AudioManager.Instance.PlayGameOver();
        }
        
        public void PauseGame()
        {
            _onPause = true;
            _currentGameSpeed = 0f;
            AudioManager.Instance.StopMusic();
            _cycleTokenSource.Cancel();
        }
        public void ResumeGame()
        {
            _onPause = false;
            _currentGameSpeed = gameSpeed;
            AudioManager.Instance.StartMusic();
            DifficultyCycle().Forget();
        }

        private void ResetGame()
        {
            _incrementedGameSpeed = 0f;
            PassingObjectsManager.Instance.ResetObjects();
        }

        private CancellationTokenSource _cycleTokenSource;
        private async UniTaskVoid DifficultyCycle()
        {
            _cycleTokenSource = new();
            try
            {
                while (true)
                {
                    await UniTask.WaitForSeconds(10).AttachExternalCancellation(_cycleTokenSource.Token);
                    _incrementedGameSpeed += gameSpeedIncrement;
                }
            }
            catch
            {
                _cycleTokenSource.Dispose();
            }
        }
    }
}