using BrewMonster.Assets.PerfectWorld.Scripts.UI;
using BrewMonster.Common;
using BrewMonster.Managers;
using BrewMonster.Scripts;
using BrewMonster.Scripts.Managers;
using CSNetwork.GPDataType;
using Cysharp.Threading.Tasks.Triggers;
using PerfectWorld.Scripts.Managers;
using System;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using static BrewMonster.Scripts.EC_Inventory;

namespace BrewMonster.UI
{
    public class DlgPetHatch : AUIDialog
    {
        [Header("Component")]
        [SerializeField] private TextMeshProUGUI m_pTxtName;
        [SerializeField] private TextMeshProUGUI m_pTxtGold;
        [SerializeField] private Image m_pImg_Item;
        [SerializeField] private GameObject m_pTxtBindTip;

        [Header("Buttons")]
        [SerializeField] private Button m_btnConfirm;
        [SerializeField] private Button m_btnCancel;
        [SerializeField] private Button m_btnClose;
        [SerializeField] private Button m_btnUseItem;

        [Header("Defautl Icon")]
        [SerializeField] private Sprite m_defaultIcon;
        [SerializeField] private GameObject m_itemInfo;

        private int m_nSlot = 1;
        private EC_IvtrPetEgg m_pCurrentEgg = null;

        private float m_doubleClickTime = 1f;

        public override void Awake()
        {
            base.Awake();
            RegisterClick(m_pImg_Item.transform, OnClickEggSlot);
        }

        public override void OnEnable()
        {
            base.OnEnable();
            ClearEgg();
            if (m_btnConfirm != null)
                m_btnConfirm.onClick.AddListener(OnCommandConfirm);
            if (m_btnCancel != null)
                m_btnCancel.onClick.AddListener(OnCommandCancel);
            if (m_btnClose != null)
                m_btnClose.onClick.AddListener(OnCommandCancel);
            if (m_btnUseItem != null)
                m_btnUseItem.onClick.AddListener(OnClickUseItem);
        }

        public override void OnDisable()
        {
            base.OnDisable();
            RestoreInventoryColor();
            if (m_btnConfirm != null)
                m_btnConfirm.onClick.RemoveListener(OnCommandConfirm);
            if (m_btnCancel != null)
                m_btnCancel.onClick.RemoveListener(OnCommandCancel);
            if (m_btnClose != null)
                m_btnClose.onClick.RemoveListener(OnCommandCancel);
            if (m_btnUseItem != null)
                m_btnUseItem.onClick.RemoveListener(OnClickUseItem);
        }

        public override void Show(bool value)
        {
            base.Show(value);
            if (value)
            {
                OnShowDialog();
            }
        }

        private void OnShowDialog()
        {
            ClearEgg();
        }

        private void SetEggInternal(EC_IvtrPetEgg petEgg, int slotIndex)
        {
            if (petEgg == null)
                return;

            if (m_nSlot >= 0)
            {
                var previousBtn = FindInventoryButtonBySlot(m_nSlot);
                SetInventorySlotGray(previousBtn, false);
            }

            if (m_pCurrentEgg != null)
                m_pCurrentEgg.Freeze(false);

            m_pCurrentEgg = petEgg;
            m_nSlot = slotIndex;

            petEgg.Freeze(true);
            SetDataPtr(petEgg, "");
            UpdateEggUI(petEgg);

            var btn = FindInventoryButtonBySlot(slotIndex);
            SetInventorySlotGray(btn, true);
        }

        public void SetEgg(EC_IvtrItem pItem, int nSlot)
        {
            if (!(pItem is EC_IvtrPetEgg petEgg))
                return;

            SetEggInternal((EC_IvtrPetEgg)pItem, nSlot);
        }

        private void RegisterClick(Transform target, Action<PointerEventData> callback)
        {
            if (target == null)
                return;

            var trigger = target.GetComponent<EventTrigger>();
            if (trigger == null)
                trigger = target.gameObject.AddComponent<EventTrigger>();

            var existingClick = trigger.triggers.Find(e => e.eventID == EventTriggerType.PointerClick);
            if (existingClick != null)
                trigger.triggers.Remove(existingClick);

            var entry = new EventTrigger.Entry
            {
                eventID = EventTriggerType.PointerClick
            };
            entry.callback.AddListener((data) => { callback((PointerEventData)data); });
            trigger.triggers.Add(entry);
        }

        private void OnClickEggSlot(PointerEventData eventData)
        {
            if (m_pCurrentEgg != null)
            {
                ReturnItemToInventory(m_nSlot);
                ClearEgg();
            }
        }

        private void OnDropEgg(PointerEventData eventData)
        {
            if (eventData.pointerDrag == null)
                return;

            var btn = eventData.pointerDrag.GetComponent<Button>();
            if(btn == null)
                return;

            int slotIndex = btn.transform.GetSiblingIndex();

            var item = GetItemFromDrag(eventData);
            if (item == null)
                return;

            if(item.GetClassID() != (int)EC_IvtrItem.InventoryClassId.ICID_PETEGG)
            {
                return;
            }

            EC_IvtrItem detailedItem = EC_IvtrItem.CreateItem(item.m_tid, item.m_expire_date, item.m_iCount);
            if(item.Content != null && item.Content.Length > 0)
            {
                detailedItem.SetItemInfo(item.Content, item.Content.Length);
            }
            else
            {
                detailedItem.GetDetailDataFromLocal();
            }

            //EC_IvtrPetEgg petEgg = detailedItem as EC_IvtrPetEgg;
            EC_IvtrPetEgg petEgg = item as EC_IvtrPetEgg;
            if(petEgg == null)
            {
                return;
            }

            if (m_nSlot >= 0)
            {
                var previosBtn = FindInventoryButtonBySlot(m_nSlot);
                SetInventorySlotGray(previosBtn, false);
            }

            if(m_pCurrentEgg != null)
                m_pCurrentEgg.Freeze(false);

            m_pCurrentEgg = petEgg;
            m_nSlot = slotIndex;
            SetDataPtr(petEgg, "");
            petEgg.Freeze(true);
            UpdateEggUI(petEgg);
            SetInventorySlotGray(btn, true);
        }

        private EC_IvtrItem GetItemFromDrag(PointerEventData eventData)
        {
            if (eventData.pointerDrag == null)
                return null;

            var btn = eventData.pointerDrag.GetComponent<Button>();
            if(btn == null)
                return null;

            int slotIndex = btn.transform.GetSiblingIndex();

            var host = CECGameRun.Instance?.GetHostPlayer();
            if(host == null)
                return null;

            var inv = host.GetInventory(0);
            if (inv == null)
                return null;

            return inv.GetItem(slotIndex, false);
        }

        private Button FindInventoryButtonBySlot(int slot)
        {
            var inventoryUI = FindFirstObjectByType<EC_InventoryUI>();
            if(inventoryUI == null)
                return null;

            var field = typeof(EC_InventoryUI)
                .GetField("inventoryPackButtons", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);

            if(field == null)
                return null;

            var list = field.GetValue(inventoryUI) as System.Collections.Generic.List<Button>;
            if(list == null || slot < 0 || slot >= list.Count)
                return null;

            return list[slot];
        }

        private void SetInventorySlotGray(Button btn, bool gray)
        {
            if (btn == null)
                return;
            var img = btn.GetComponent<Image>();
            if (img == null)
                return;
            img.color = gray ? Color.gray : Color.white;
        }

        private void SetSlotIcon(Image slot, EC_IvtrItem item)
        {
            if (slot == null || item == null)
            {
                BMLogger.LogWarning("DlgPetHatch: SetSlotIcon - slot or item is null");
                return;
            }

            var sprite = EC_IvtrItemUtils.Instance.ResolveItemIconSprite(item.m_tid);
            if (sprite == null)
            {
                BMLogger.LogWarning($"DlgPetHatch: No sprite found for item tid: {item.m_tid}");
                return;
            }

            BMLogger.Log($"DlgPetHatch: Setting icon for {item.GetName()}");
            slot.sprite = sprite;
            slot.enabled = true;
            slot.color = Color.white;
            slot.SetNativeSize();
        }

        private void ClearSlotIcon(Image slot)
        {
            if (slot == null)
                return;

            slot.sprite = m_defaultIcon;
            slot.enabled = m_defaultIcon != null;
        }

        private void ReturnItemToInventory(int slotIndex)
        {
            if (slotIndex < 0)
                return;

            var btn = FindInventoryButtonBySlot(slotIndex);
            SetInventorySlotGray(btn, false);
        }

        private void RestoreInventoryColor()
        {
            if (m_nSlot >= 0)
            {
                var btn = FindInventoryButtonBySlot(m_nSlot);
                SetInventorySlotGray(btn, false);
            }
        }

        private void UpdateEggUI(EC_IvtrPetEgg pEgg)
        {
            if(pEgg == null)
                return;

            if (m_pTxtBindTip != null)
            {
                bool isBound = (pEgg.GetProcType() & (int)EC_IvtrItem.ProcType.PROC_BIND) != 0;
                m_pTxtBindTip.SetActive(isBound);

                if (isBound)
                {
                    BMLogger.Log("DlgPetHatch: Pet egg is bound - displaying warning");
                }
            }

            if(m_pTxtName != null)
            {
                m_pTxtName.text = pEgg.GetName();
            }

            if (m_pTxtGold != null)
            {
                try
                {
                    var essence = pEgg.GetDBEssence();
                    if (essence.id != 0)
                    {
                        m_pTxtGold.SetText(essence.money_hatched.ToString());
                    }
                    else
                    {
                        m_pTxtGold.SetText("0");
                    }
                }
                catch (Exception ex)
                {
                    BMLogger.LogError($"DlgPetHatch: Failed to get essence data for pet egg - {ex.Message}");
                    m_pTxtGold.SetText("0");
                }
            }
            SetSlotIcon(m_pImg_Item, pEgg);
        }

        private void ClearEgg()
        {
            if (m_nSlot >= 0)
            {
                ReturnItemToInventory(m_nSlot);
            }

            if(m_pTxtBindTip != null)
                m_pTxtBindTip.SetActive(false);

            if (m_pCurrentEgg != null)
            {
                m_pCurrentEgg.Freeze(false);
                m_pCurrentEgg = null;
            }

            SetDataPtr(null, "");
            ClearSlotIcon(m_pImg_Item);

            if (m_pTxtName != null)
                m_pTxtName.text = "";

            if(m_pTxtGold != null)
                m_pTxtGold.text = "0";

            m_nSlot = -1;
        }

        private void OnCommandConfirm()
        {
            EC_IvtrItem pItem = (EC_IvtrItem)(GetDataPtr(""));
            if (pItem != null)
            {
                pItem.Freeze(false);
                GetHostPlayer().HatchPet(m_nSlot);
                SetDataPtr(null, "");
                GetGameUIMan().EndNPCService();
                GetGameUIMan().GetDialog("Win_Inventory")?.Show(false);
                GetHostPlayer().GetPack(Inventory_type.IVTRTYPE_PACK).UnfreezeAllItems();
                CloseDialogue();
            }
        }

        private void OnCommandCancel()
        {
            RestoreInventoryColor();
            ClearEgg();
            GetGameUIMan().EndNPCService();
            GetGameUIMan().GetDialog("Win_Inventory")?.Show(false);
            GetHostPlayer().GetPack(Inventory_type.IVTRTYPE_PACK).UnfreezeAllItems();
            CloseDialogue();
        }

        //public void SetEgg(EC_IvtrItem pItem, int nSlot)
        //{
        //    if (pItem == null || !(pItem is EC_IvtrPetEgg))
        //        return;

        //    ClearEgg();

        //    EC_IvtrPetEgg petEgg = (EC_IvtrPetEgg)pItem;

        //    m_pCurrentEgg = petEgg;
        //    m_nSlot = nSlot;

        //    petEgg.Freeze(true);
        //    UpdateEggUI(petEgg);

        //    var btn = FindInventoryButtonBySlot(nSlot);
        //    SetInventorySlotGray(btn, true);
        //}

        private bool TryGetSelectedInventoryItem(out EC_IvtrItem item, out int slot)
        {
            item = null;
            slot = -1;
            var inventoryUI = FindFirstObjectByType<EC_InventoryUI>();
            if (inventoryUI == null)
                return false;

            var type = typeof(EC_InventoryUI);
            var packageField = type.GetField("currentSelectedPackage", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            var slotField = type.GetField("currentSelectedSlot", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            var itemField = type.GetField("currentSelectedItem", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);

            if (packageField == null || slotField == null || itemField == null)
                return false;

            var selectedPackage = (byte)packageField.GetValue(inventoryUI);
            if (selectedPackage != (byte)Inventory_type.IVTRTYPE_PACK)
                return false;

            slot = (int)slotField.GetValue(inventoryUI);
            item = itemField.GetValue(inventoryUI) as EC_IvtrItem;

            return item != null && slot >= 0;
        }

        private void OnClickUseItem()
        {
            if (!TryGetSelectedInventoryItem(out var selectedItem, out var selectedSlot))
            {
                return;
            }

            if (!(selectedItem is EC_IvtrPetEgg selectedEgg))
            {
                return;
            }

            SetEggInternal(selectedEgg, selectedSlot);
            if (m_itemInfo != null)
                m_itemInfo.SetActive(false);
        }


        private void OnDestroy()
        {
            ClearEgg();
            RestoreInventoryColor();
        }
    }
}