using System.Collections.Generic;
using Cielonos.MainGame.Characters.Inventory;
using Cielonos.MainGame.UI;
using UnityEngine;

namespace Cielonos.MainGame.Characters
{
    public partial class PlayerEquipmentSubmodule : SubmoduleBase<PlayerInventorySubcontroller>
    {
        public List<MainWeaponBase> preparedMainWeapons;
        public MainWeaponBase currentMainWeapon;
        public List<SupportEquipmentBase> currentSupportEquipments;

        public PlayerEquipmentSubmodule(PlayerInventorySubcontroller owner) : base(owner)
        {
            preparedMainWeapons = new List<MainWeaponBase>();
            currentSupportEquipments = new List<SupportEquipmentBase>(4) { null, null, null, null };
            foreach (MainWeaponBase mainWeapon in owner.backpack.mainWeapons)
            {
                PrepareMainWeapon(mainWeapon);
            }
        }
    }

    #region Main Weapon

    public partial class PlayerEquipmentSubmodule
    {
        public void PrepareMainWeapon(MainWeaponBase weaponToPrepare)
        {
            if (!preparedMainWeapons.Contains(weaponToPrepare))
            {
                preparedMainWeapons.Add(weaponToPrepare);
            }
        }

        public void WithdrawMainWeapon(MainWeaponBase weaponToWithdraw)
        {
            if (preparedMainWeapons.Contains(weaponToWithdraw))
            {
                if (currentMainWeapon == weaponToWithdraw)
                {
                    RemoveMainWeapon();
                }

                preparedMainWeapons.Remove(weaponToWithdraw);
                Object.Destroy(weaponToWithdraw);
            }
        }

        public void EquipMainWeapon(MainWeaponBase newWeapon)
        {
            currentMainWeapon = newWeapon;
            currentMainWeapon.RegisterFuncAnims();
            currentMainWeapon.OnEquipped();

            PlayerCanvas.Instance.mainWeaponUIArea.Initialize(newWeapon);
        }

        public void RemoveMainWeapon()
        {
            Debug.Log("Unequipping main weapon: " + currentMainWeapon);
            currentMainWeapon.OnUnequipped();
            currentMainWeapon = null;
        }
    }

    #endregion

    #region Support Equipment

    public partial class PlayerEquipmentSubmodule
    {
        public void EquipSupportEquipment(SupportEquipmentBase newEquipment, int slotIndex)
        {
            if (slotIndex < 0 || slotIndex >= 4)
            {
                Debug.LogWarning("Invalid support equipment slot index: " + slotIndex);
                return;
            }

            //如果当前槽位没有足够的空间，扩展列表
            if (currentSupportEquipments.Count <= slotIndex)
            {
                while (currentSupportEquipments.Count <= slotIndex)
                {
                    currentSupportEquipments.Add(null);
                }
            }

            //卸下当前装备（如果有的话）
            if (currentSupportEquipments[slotIndex] != null)
            {
                currentSupportEquipments[slotIndex].OnUnequipped();
            }

            currentSupportEquipments[slotIndex] = newEquipment;
            newEquipment.RegisterFuncAnims();
            newEquipment.OnEquipped();

            PlayerCanvas.Instance.supportEquipmentsUIArea.Initialize(newEquipment, slotIndex);
        }

        public void RemoveSupportEquipment(SupportEquipmentBase equipmentToRemove)
        {
            int slotIndex = currentSupportEquipments.IndexOf(equipmentToRemove);

            if (slotIndex != -1)
            {
                equipmentToRemove.OnUnequipped();
                currentSupportEquipments[slotIndex] = null;

                PlayerCanvas.Instance.supportEquipmentsUIArea.Remove(slotIndex);
            }
        }

        public void RemoveSupportEquipment(int slotIndex)
        {
            if (slotIndex < 0 || slotIndex >= currentSupportEquipments.Count)
            {
                Debug.LogWarning("Invalid support equipment slot index: " + slotIndex);
                return;
            }

            SupportEquipmentBase equipmentToRemove = currentSupportEquipments[slotIndex];
            if (equipmentToRemove != null)
            {
                equipmentToRemove.OnUnequipped();
                currentSupportEquipments[slotIndex] = null;

                PlayerCanvas.Instance.supportEquipmentsUIArea.Remove(slotIndex);
            }
        }
    }

    #endregion

}