using Entitas;
using Sog;

namespace CoreGame.Render
{
    public struct EquipData
    {
        public int slotId;
        public int equipEid;
        public int ownerId;
        public int gunCfgId;
        public Fixed64 holdDownTime;
        public Fixed64 holdDownCD;
    }

    // 这组件理论上只有角色用吧
    [Combat]
    public class EquipsComponent : IComponent, IReset
    {
        public CombatEntity owner;

        // 武器槽位应该不会太多, 规定第0个为主武器, 第1个为辅助武器
        internal readonly EquipData[] slotDatas = new EquipData[2];
        internal int usedSlot = -1;
        internal int lastUsedSlot = -1; // 上一次使用的武器槽位, 用于切枪

        // 获取当前使用的武器
        public CombatEntity GetHoldGunEntity()
        {
            if (usedSlot < 0 || usedSlot >= slotDatas.Length)
                return null;
            if (slotDatas[usedSlot].equipEid == 0)
                return null;

            return Contexts.Combat.GetEntity(slotDatas[usedSlot].equipEid);
        }

        public CombatEntity GetMainGunEntity()
        {
            if (slotDatas[0].equipEid == 0)
                return null;

            return Contexts.Combat.GetEntity(slotDatas[0].equipEid);
        }

        public CombatEntity GetSupportGunEntity()
        {
            if (slotDatas[1].equipEid == 0)
                return null;

            return Contexts.Combat.GetEntity(slotDatas[1].equipEid);
        }


        // 获取指定槽位的武器
        public CombatEntity GetSlotGunEntity(int slot)
        {
            if (slot < 0 || slot >= slotDatas.Length)
                return null;
            return Contexts.Combat.GetEntity(slotDatas[slot].equipEid);
        }

        public ref EquipData GetSlotData(int slot)
        {
            return ref slotDatas[slot];
        }

        public ref EquipData GetMainSlotData()
        {
            return ref slotDatas[0];
        }

        public ref EquipData GetSupportSlotData()
        {
            return ref slotDatas[1];
        }

        public ref EquipData GetHoldSlotData()
        {
            return ref slotDatas[usedSlot];
        }

        public ref EquipData GetNextSlotData()
        {
            return ref slotDatas[usedSlot + 1 >= slotDatas.Length ? 0 : usedSlot + 1];
        }

        public void AddGunToOwner(CombatEntity gun, int slotId)
        {
            if (gun == null)
            {
                return;
            }
            var gunDesc = WeaponDescMgr.Instance.GetConfig(gun.gunData.gunCfgId);
            var cd = gunDesc.ReEnterCD * BattleConst.TenThousandReverse;
            slotDatas[slotId] = new EquipData
            {
                slotId = slotId,
                equipEid = gun.creationIndex,
                ownerId = owner.creationIndex,
                gunCfgId = gun.gunData.gunCfgId,
                holdDownCD = cd,
                //保证刚进入战斗场景时可以切枪
                holdDownTime = GameTime.GetRenderTime() - cd
            };
        }

        public void SwitchSlotNoCheck(int slot)
        {
            lastUsedSlot = usedSlot;
            usedSlot = slot;
        }

        public void Reset()
        {
            for (var i = 0; i < slotDatas.Length; i++)
            {
                slotDatas[i] = default;
            }
            usedSlot = -1;
        }
    }
}