using System.Collections.Generic;
using System.Linq;
using DDD.ScriptableObjects;
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.InputSystem;
using UnityEngine.UI;

namespace DDD.Uis.Tycoon
{
    public class MealKitUi : PopupUi
    {
        [Title("프리팹")]
        [SerializeField]
        private MealKitButton _mealKitButtonPrefab;

        [Title("컴포넌트")]
        [SerializeField]
        private GameObject _panel;

        [SerializeField]
        private GameObject _mealKitsLocation;

        [Title("클래스")]
        [SerializeField]
        private UiEventsController _uiEventsController;

        [Title("데이터")]
        [SerializeField]
        private int _maxMealKitCount = 6;

        [Title("실시간 데이터")]
        [SerializeField]
        private List<MealKitButton> _mealKitButtons;

        private InputAction _interactionEAction;
        private InputAction _cancelAction;
        private InputAction _pressFAction;

        private void Awake()
        {
            // 더미 데이터 삭제
            foreach (Transform element in _mealKitsLocation.transform)
            {
                if (element)
                {
                    Destroy(element.gameObject);
                }
            }
        }

        private void Start()
        {
            EventManager.OnAddedMealKit += SetTodayMenus;

            _interactionEAction =
                PlayerInputKeyManager.Instance.GetAction(InputActionMaps.TycoonUi, TycoonUiActions.InteractionE);
            _cancelAction = PlayerInputKeyManager.Instance.GetAction(InputActionMaps.TycoonUi, TycoonUiActions.Cancel);
            _pressFAction = PlayerInputKeyManager.Instance.GetAction(InputActionMaps.TycoonUi, TycoonUiActions.PressF);

            _mealKitButtons = new List<MealKitButton>(_maxMealKitCount);
            for (int i = 0; i < _maxMealKitCount; i++)
            {
                MealKitButton mealKitButton = Instantiate(_mealKitButtonPrefab, _mealKitsLocation.transform);
                mealKitButton.RegisterButtonListener(() => OnClickedMealKit(mealKitButton));
                _mealKitButtons.Add(mealKitButton);
            }

            _panel.SetActive(false);
        }

        private void OnDestroy()
        {
            EventManager.OnAddedMealKit -= SetTodayMenus;
        }

        private void OnClickedMealKit(MealKitButton mealKitButton)
        {
            if (mealKitButton.CanInteraction())
            {
                CraftRecipeData newCraftRecipeData = new CraftRecipeData(mealKitButton.CraftRecipeData);
                EventManager.InvokePickupMealKit(newCraftRecipeData);
                mealKitButton.PickupMealKit();
                Close();
            }
        }

        public bool CanOpen()
        {
            return _mealKitButtons.Any(mealKitButton => mealKitButton.CanInteraction());
        }

        public override void Open()
        {
            base.Open();
            _panel.SetActive(true);
            PlayerInputKeyManager.Instance.SwitchCurrentActionMap(InputActionMaps.TycoonUi);

            SortMealKitButtons();

            _uiEventsController.SetSelectObject(_mealKitButtons[0].gameObject);
            EventSystem.current.SetSelectedGameObject(_uiEventsController.SelectObject);
        }

        public void OnClose(InputAction.CallbackContext context)
        {
            Close();
        }

        public override void Close()
        {
            _panel.SetActive(false);
            base.Close();

            if (PopupUiController.IsPopupListEmpty() || !PopupUiController.IsPausedPopupList())
            {
                PlayerInputKeyManager.Instance.SwitchCurrentActionMap(InputActionMaps.Tycoon);
            }
        }

        public override void EnableInput()
        {
            _interactionEAction.performed += OnInteractionE;
            _cancelAction.performed += OnClose;
            _pressFAction.performed += OnClose;
            _uiEventsController.EnableAutoNavigate();
        }

        public override void DisableInput()
        {
            _interactionEAction.performed -= OnInteractionE;
            _cancelAction.performed -= OnClose;
            _pressFAction.performed -= OnClose;
            _uiEventsController.DisableAutoNavigate();
        }

        private void OnInteractionE(InputAction.CallbackContext context)
        {
            if (!EventSystem.current) return;

            EventSystem.current.currentSelectedGameObject.GetComponent<Button>()?.onClick.Invoke();
        }

        private void SetTodayMenus(List<TodayMenu> todayMenus)
        {
            for (int i = 0; i < _maxMealKitCount; i++)
            {
                _mealKitButtons[i].SetMealKit(todayMenus[i].AddedCraftRecipeData, todayMenus[i].AddedCount);
                if (todayMenus[i].AddedCraftRecipeData == null)
                {
                    _mealKitButtons[i].HideUi();
                }
                else
                {
                    _mealKitButtons[i].ShowUi();
                }
            }
        }

        private void SortMealKitButtons()
        {
            // 1) 임시 리스트에 인터랙션 가능한 버튼만 먼저 담는다(Stable).
            List<MealKitButton> sortedList = new List<MealKitButton>(_mealKitButtons.Count);
            foreach (var mealKitButton in _mealKitButtons)
            {
                if (mealKitButton.CanInteraction())
                {
                    sortedList.Add(mealKitButton);
                }
            }

            // 2) 그 다음 인터랙션 불가능한 버튼들을 뒤에 붙인다.
            foreach (var mealKitButton in _mealKitButtons)
            {
                if (!mealKitButton.CanInteraction())
                {
                    sortedList.Add(mealKitButton);
                }
            }

            // 3) 재배치한 리스트를 원본 리스트에 반영
            _mealKitButtons = sortedList;

            // 4) 실제 UI 계층(트랜스폼) 순서도 변경하여 GridLayoutGroup이 의도한 순서로 그리도록 설정
            for (int i = 0; i < _mealKitButtons.Count; i++)
            {
                // i번째 순서대로 형제 인덱스(Sibling Index)를 지정
                _mealKitButtons[i].transform.SetSiblingIndex(i);
            }

            // 5) 정렬 이후, 내비게이션도 재설정 (정렬 순서가 바뀌었으므로)
            SetNavigationMealKitButtons();
        }

        private bool IsButtonValid(MealKitButton mealKitButton)
        {
            return mealKitButton != null
                   && mealKitButton.gameObject.activeInHierarchy
                   && mealKitButton.Button != null
                   && mealKitButton.Button.interactable;
        }

        private void SetNavigationMealKitButtons()
        {
            int columnCount = 3;
            int count = _mealKitButtons.Count;

            for (int i = 0; i < count; i++)
            {
                MealKitButton currentMealKit = _mealKitButtons[i];
                Button currentButton = currentMealKit.Button;

                // 새로운 Navigation 객체 생성 및 Explicit 모드 설정
                Navigation nav = new Navigation { mode = Navigation.Mode.Explicit };

                // 현재 버튼이 비활성(혹은 인터랙션 불가능)하면 내비게이션 항목은 모두 null 처리
                if (!IsButtonValid(currentMealKit))
                {
                    currentButton.navigation = nav; // 모든 방향 null
                    continue;
                }

                // 상(Up) 이웃 버튼: 인덱스 i - columnCount
                int upIndex = i - columnCount;
                if (upIndex >= 0 && IsButtonValid(_mealKitButtons[upIndex]))
                {
                    nav.selectOnUp = _mealKitButtons[upIndex].Button;
                }
                else
                {
                    nav.selectOnUp = null;
                }

                // 하(Down) 이웃 버튼: 인덱스 i + columnCount
                int downIndex = i + columnCount;
                if (downIndex < count && IsButtonValid(_mealKitButtons[downIndex]))
                {
                    nav.selectOnDown = _mealKitButtons[downIndex].Button;
                }
                else
                {
                    nav.selectOnDown = null;
                }

                // 좌(Left) 이웃 버튼: 인덱스 i - 1 (같은 행인지 체크)
                int leftIndex = i - 1;
                if (leftIndex >= 0
                    && (i / columnCount == leftIndex / columnCount)
                    && IsButtonValid(_mealKitButtons[leftIndex]))
                {
                    nav.selectOnLeft = _mealKitButtons[leftIndex].Button;
                }
                else
                {
                    nav.selectOnLeft = null;
                }

                // 우(Right) 이웃 버튼: 인덱스 i + 1 (같은 행인지 체크)
                int rightIndex = i + 1;
                if (rightIndex < count
                    && (i / columnCount == rightIndex / columnCount)
                    && IsButtonValid(_mealKitButtons[rightIndex]))
                {
                    nav.selectOnRight = _mealKitButtons[rightIndex].Button;
                }
                else
                {
                    nav.selectOnRight = null;
                }

                // 최종 Navigation 할당
                currentButton.navigation = nav;
            }
        }
    }
}