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

public class VitrinaPanel : MonoBehaviour, IControlable
{
    public event Action<bool> OnComplete;

    [SerializeField] private Transform BoxesRoot;
    [SerializeField] private GameObject BoxViewPrefab;

    private readonly List<VitrinaBox> _generatedBoxes = new();
    private int _pointerIndex;
    private bool _initialized;
    private bool _waitForActionRelease;
    private bool _waitingForResult;

    public bool ControlsEnabled { get; set; }
    private VitrinaBox CurrentBox => _generatedBoxes[_pointerIndex];

    private void OnDisable()
    {
        ControlsEnabled = false;
        _initialized = false;
        _waitingForResult = false;
        UnsubscribeFromResult();
        ClearBoxes();
    }

    public async void Initialize(int[] requiredBoxes)
    {
        if (_initialized)
            return;

        _initialized = true;
        ControlsEnabled = false;
        ClearBoxes();

        if (VitrinaCatcher.Instance == null)
        {
            Debug.LogError("VitrinaCatcher не инициализирован", gameObject);
            _initialized = false;
            gameObject.SetActive(false);
            OnComplete?.Invoke(false);
            return;
        }

        SubscribeToResult();

        if (!PrizeStandController.Initialized)
        {
            _waitingForResult = true;
            VitrinaCatcher.Instance.DisplayOpenResult(false, "Витрина не подключена");
            return;
        }

        int[] readyBoxes = await PrizeStandController.GetReadyBoxesAsync();

        if (!_initialized)
            return;

        int[] availableBoxes = FindIntersection(requiredBoxes, readyBoxes);

        if (availableBoxes.Length == 0)
        {
            _waitingForResult = true;
            VitrinaCatcher.Instance.DisplayOpenResult(false, "Нет доступных призов в витрине");
            return;
        }

        _pointerIndex = 0;
        GenerateBoxes(availableBoxes);
        CurrentBox.SetEnabled(true);
        _waitForActionRelease = true;
        ControlsEnabled = true;
        ControlsPerformer.Instance.SetControlable(this);
    }

    public void UpdateControls()
    {
        if (!_initialized || _waitingForResult)
            return;

        if (_waitForActionRelease)
        {
            if (In.GetAction(JoystickSide.Both, InteractMode.Continious))
                return;

            _waitForActionRelease = false;
        }

        int direction = In.GetAxis(JoystickSide.Both, InteractMode.Discrete).x;

        if (direction != 0 && _generatedBoxes.Count > 1)
        {
            CurrentBox.SetEnabled(false);
            CurrentBox.shake = false;
            _pointerIndex = (_pointerIndex + direction + _generatedBoxes.Count) % _generatedBoxes.Count;
            CurrentBox.SetEnabled(true);
        }

        if (!In.GetAction(JoystickSide.Both, InteractMode.Discrete))
            return;

        ControlsEnabled = false;
        ControlsPerformer.Instance.SetControlable(null);
        CurrentBox.shake = true;
        _waitingForResult = true;
        _ = PrizeStandController.OpenBoxAsync(CurrentBox.Number);
    }

    public static int[] FindIntersection(int[] array1, int[] array2)
    {
        if (array1 == null || array2 == null || array1.Length == 0 || array2.Length == 0)
            return Array.Empty<int>();

        HashSet<int> requiredBoxes = new(array1);
        return array2.Where(requiredBoxes.Contains).Distinct().OrderBy(number => number).ToArray();
    }

    public void Close()
    {
        ControlsEnabled = false;
        ControlsPerformer.Instance.SetControlable(null);
        gameObject.SetActive(false);
    }

    private void GenerateBoxes(int[] indexes)
    {
        foreach (int index in indexes)
        {
            GameObject boxObject = Instantiate(BoxViewPrefab, BoxesRoot);

            if (boxObject.TryGetComponent(out VitrinaBox box))
            {
                _generatedBoxes.Add(box);
                box.SetNumber(index);
            }
            else
            {
                Destroy(boxObject);
                Debug.LogError("Префаб не содержит компонента VitrinaBox", gameObject);
            }
        }
    }

    private void ClearBoxes()
    {
        foreach (VitrinaBox box in _generatedBoxes)
        {
            if (box != null)
                Destroy(box.gameObject);
        }

        _generatedBoxes.Clear();
    }

    private void SubscribeToResult()
    {
        if (VitrinaCatcher.Instance == null)
            return;

        VitrinaCatcher.Instance.ResultClosed -= HandleResultClosed;
        VitrinaCatcher.Instance.ResultClosed += HandleResultClosed;
    }

    private void UnsubscribeFromResult()
    {
        if (VitrinaCatcher.Instance != null)
            VitrinaCatcher.Instance.ResultClosed -= HandleResultClosed;
    }

    private void HandleResultClosed(bool success)
    {
        if (!_initialized || !_waitingForResult)
            return;

        UnsubscribeFromResult();
        _initialized = false;
        _waitingForResult = false;
        gameObject.SetActive(false);
        OnComplete?.Invoke(success);
    }
}