using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.AddressableAssets;

namespace DDD
{
    public class GameController : Singleton<GameController>, IManager, IGameFlowHandler
    {
        [SerializeField] private AssetReference _gameData;
        
        public GameData GetGameData() => GameData.Instance;
        public GameState GetGameState() => GameState.Instance;       
        
        private List<FlowController> _gameFlowControllers = new();
        private static readonly List<Type> GameFlowControllerTypes = new();

        public void PreInit()
        {
            CreateGameState();
            RegisterFlowHandler();
        }

        public async Task Init()
        {
            await LoadData();
            await GetGameData().LoadData();
            await InitializeAllFlowControllers();
        }

        public void PostInit()
        {
        }

        private void CreateGameState()
        {
            GameState.CreateScriptSingleton();
        }

        private void RegisterFlowHandler()
        {
            GameFlowManager.Instance.FlowHandlers.Add(this);
        }

        private async Task InitializeAllFlowControllers()
        {
            // Create controllers and initialize them
            foreach (var gameFlowControllerType in GameFlowControllerTypes)
            {
                // create new controllers from gameFlowControllerType
                var newController = ScriptableObject.CreateInstance(gameFlowControllerType);
                var newFlowController = newController as FlowController;
                _gameFlowControllers.Add(newFlowController);
                await newFlowController.InitializeController();
            }

            foreach (var gameFlowController in _gameFlowControllers)
            {
                await gameFlowController.InitializeState();   
            }
        }

        private async Task LoadData()
        {
            await Task.CompletedTask;
        }

        public async Task OnReadyNewFlow(GameFlowState newFlowState)
        {
            List<Task> tasks = new List<Task>();
            // Default initialization
            

            foreach (var gameFlowController in _gameFlowControllers)
            {
                tasks.Add(gameFlowController.OnReadyNewFlow(newFlowState));
            }
            await Task.WhenAll(tasks);
        }

        public async Task OnExitCurrentFlow(GameFlowState exitingFlowState)
        {
            List<Task> tasks = new List<Task>();
            foreach (var gameFlowController in _gameFlowControllers)
            {
                tasks.Add(gameFlowController.OnExitCurrentFlow(exitingFlowState));
            }
            await Task.WhenAll(tasks);
        }
    }
}