using System;
using System.Collections.Generic;
using Cysharp.Threading.Tasks;
using Framework;
using Gameplay.Character;
using Gameplay.Character.Utils;
using Gameplay.Level;
using Gameplay.Unit.Data;
using Gameplay.Vehicle.Impl;
namespace Gameplay.Unit
{
    public class GameUnitManager
    {

        /// <summary>
        /// 备战席的单位
        /// </summary>
        public UnitContainer prepareUnits = new UnitContainer();

        /// <summary>
        /// 战斗中的单位
        /// </summary>
        public UnitContainer infightUnits = new UnitContainer();

        /// <summary>
        /// 已死亡的单位
        /// 注意这里不会有载具单位,载具单位死亡之后仍在存在于战斗中,只是处于损坏状态,可以被技能修复
        /// </summary>
        public UnitContainer deadUnits = new UnitContainer();

        /// <summary>
        /// 所有的单位,无论是否在备战席、战斗中、死亡,都能在这里找到
        /// </summary>
        public UnitContainer totalUnits = new UnitContainer();

        public CharacterManager characterManager;

        private bool _needUpdateTargets;

        public static GameUnitManager instance { get; private set; }

        public static void CreateInstance()
        {
            instance = new GameUnitManager();
            instance.Init();
        }

        private GameUnitManager()
        {
            characterManager = new CharacterManager();
        }

        public void Init()
        {
            _needUpdateTargets = true;

            _RegistEvents();
        }

        private void _RegistEvents()
        {
            EventManager.Instance.Register(EventManager.EventName.INFIGHT_UNIT_CELLINDEX_CHANGE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
            EventManager.Instance.Register(EventManager.EventName.INFIGHT_UP_VEHICLE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
            EventManager.Instance.Register(EventManager.EventName.INFIGHT_DOWN_VEHICLE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
            EventManager.Instance.Register(EventManager.EventName.INFIGHT_UNIT_DEAD, (Action<GameUnit>)_OnCharacterDead);
        }

        private void _UnRegistEvents()
        {
            EventManager.Instance.Unregister(EventManager.EventName.INFIGHT_UNIT_CELLINDEX_CHANGE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
            EventManager.Instance.Unregister(EventManager.EventName.INFIGHT_UP_VEHICLE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
            EventManager.Instance.Unregister(EventManager.EventName.INFIGHT_DOWN_VEHICLE, (Action<GameUnit>)_OnAnyCharacterCellIndexChange);
            EventManager.Instance.Unregister(EventManager.EventName.INFIGHT_UNIT_DEAD, (Action<GameUnit>)_OnCharacterDead);
        }

        private void _OnCharacterDead(GameUnit deadCharacter)
        {
            _needUpdateTargets = true;
        }

        private void _OnAnyCharacterCellIndexChange(GameUnit noUse)
        {
            _needUpdateTargets = true;
        }

        public async UniTask PrepareUnits()
        {
            var selectTeam = TeamEditManager.Instance.GetSelectTeam();
            var cIds = selectTeam.GetCharacterIDs();
            for (int i = 0; i < cIds.Length; i++)
            {
                var cId = cIds[i];
                var cInfo = CharacterDataInfoManager.Instance.GetCharacterInfo(cId);
                if (cInfo == null)
                {
                    DebugUtil.LogError("不存在的角色id: {0}", cId);
                    continue;
                }

            }

            var vIds = selectTeam.GetVehicleIDs();
            for (int i = 0; i < vIds.Length; i++)
            {
                var vId = vIds[i];
                var vInfo = VehicleCultivateDataManager.Instance.GetVehicleCultivateData(vId);
                if (vInfo == null)
                {
                    DebugUtil.LogError("不存在的载具id: {0}", vId);
                    continue;
                }
                var nGuid = GUIDManager.GenGuid();
                var dataConfig = VehicleDataHelper.CombineConfigData(vInfo);
                var troopId = ETroopsId.Self;
                var createUnit = new NormalVehicle(nGuid, dataConfig, troopId);
                await createUnit.Create();
                prepareUnits.Add(createUnit);
                totalUnits.Add(createUnit);
            }
        }

        public async UniTask<GameUnit> PrepareNpc(LevelData.NPCInfo npcInfo,
            int troopId)
        {
            var nGuid = GUIDManager.GenGuid();
            var dataConfig = CharacterDataHelper.CombineConfigData(npcInfo.id, npcInfo.level);
            var createUnit = new Character.Character(nGuid, dataConfig, troopId);
            await createUnit.LoadAsync();
            prepareUnits.Add(createUnit);
            totalUnits.Add(createUnit);
            return createUnit;
        }

        public async UniTask<GameUnit> PrepareCharacter(CharacterDataInfo cInfo,
            int troopId)
        {
            var nGuid = GUIDManager.GenGuid();
            var dataConfig = CharacterDataHelper.CombineConfigData(cInfo);
            var createUnit = new Character.Character(nGuid, dataConfig, troopId);
            await createUnit.LoadAsync();
            prepareUnits.Add(createUnit);
            totalUnits.Add(createUnit);
            return createUnit;
        }

        // 将单位移动到备战席
        public void MoveUnitToPrepare(uint unitGuid)
        {
            var unit = infightUnits.Search(unitGuid);
            if (unit == null)
            {
                DebugUtil.LogError("不存在的单位:{0}", unitGuid);
                return;
            }
            // 判断是否已经开展
            if (LevelManager.Instance.CurrentLevel.isInBattle)
            {
                unit.ExitBattle();
            }
            unit.BackPrepare();
            // 转移
            infightUnits.Remove(unit);
            prepareUnits.Add(unit);
        }

        // 将到位移动到战斗中,并指定位置
        public void MoveUnitToFight(uint unitGuid,
            int cellIndex,
            float yaw)
        {
            var unit = prepareUnits.Search(unitGuid);
            if (unit == null)
            {
                DebugUtil.LogError("不存在的单位:{0}", unitGuid);
                return;
            }
            // 设置位置
            unit.SetPosAndYaw(cellIndex, yaw);
            unit.Ready();
            // 判断是否已经开战
            if (LevelManager.Instance.CurrentLevel.isInBattle)
            {
                unit.EnterBattle();
            }
            // 转移
            prepareUnits.Remove(unit);
            infightUnits.Add(unit);
        }

        public void EnterBattle()
        {
            for (int i = 0; i < infightUnits.count; i++)
            {
                var unit = infightUnits.GetByIndex(i);
                unit.EnterBattle();
            }
        }

        public void LogicUpdate(float dt)
        {
            if (_needUpdateTargets)
            {
                _needUpdateTargets = false;
                _UpdateTargets();
            }

            for (int i = 0; i < infightUnits.count; i++)
            {
                var unit = infightUnits.GetByIndex(i);
                unit.LogicUpdate(dt);

                if (unit.needRemove)
                {
                    unit.ExitBattle();
                    infightUnits.RemoveAt(i);
                    deadUnits.Add(unit);
                    i--;
                }
            }

        }

        private void _UpdateTargets()
        {
            characterManager.UpdateTargets();
        }

        public void Dispose()
        {
            _UnRegistEvents();
            characterManager.Dispose();
            instance = null;
        }

    }
}