using AOT.PostProcess.BlackArea;
using cfg.BuffCfg;
using Gameplay.Character;
using Gameplay.Common;
using Gameplay.Effect;
using Gameplay.Performance;
using Gameplay.Pool;
using Gameplay.Unit;
using LTGame;
using UnityEngine;

namespace Gameplay.Vehicle
{
    public class BatteryStateShoot : BaseBaterryState
    {

        private float _shootTime;
        private int _fireCount;

        public BatteryStateShoot(BaseBattery owner) : base(owner, EBatteryState.Shoot)
        {

        }

        protected override void _OnEnter(NBaseState exitState,
            object param)
        {
            base._OnEnter(exitState, param);

            if (exitState != null && exitState is BatteryStateShoot)
            {
                // 自状态循环
            }
            else
            {
                _fireCount = 0;
            }

            _shootTime = owner.owner.fightData.shootCd;

            if (owner.rawAnim != null)
            {
                owner.rawAnim.Play("attack", 0, 0);
            }
            
            _DoFire();
        }

        protected override void _OnRunning()
        {
            base._OnRunning();

            if (owner.owner.statusData.isPretend)
            {
                // 该状态下不可攻击
                isFinished = true;
                nextState = EBatteryState.Idle;
                return;
            }

            owner.RotateTower(owner.lockEnemy, deltaTime);

            if (passTime >= _shootTime)
            {
                isFinished = true;
                _CheckEndState();
            }
        }

        private void _CheckEndState()
        {
            if (owner.remainBulletCount <= 0)
            {
                nextState = EBatteryState.Reload;
                return;
            }

            if (_fireCount >= owner.owner.fightData.attackLoopCount)
            {
                nextState = EBatteryState.AttackEnd;
                return;
            }

            nextState = EBatteryState.Idle;
        }

        private void _DoFire()
        {
            _EmitBullet(owner.lockEnemy);
            _fireCount++;
        }

        private void _EmitBullet(GameUnit targetEnemy)
        {

            if (owner.owner.commonData.troopId != ETroopsId.Self)
            {
                BlackAreaManager.instance.LightUpCell(owner.owner.transData.cellIndex,
                    CodeDefine.Fight.SHOOT_LIGHT_UP_TIME);
            }

            _ShowFireEffects(targetEnemy);

            _PlayFireAudio();

            owner.owner.NormalShoot(targetEnemy);

            if (!owner.owner.buffManager.CheckHasBuffType(EBuffType.NoCostBullet))
            {
                owner.remainBulletCount--;
            }
        }

        private void _PlayFireAudio()
        {
            var weaponConfig = owner.rawConfig;
            var fireAudioIds = weaponConfig.FireAudioId;
            if (fireAudioIds.Count <= 0) return;
            var fireAudioId = fireAudioIds[Random.Range(0, fireAudioIds.Count)];
            AudioManager.Instance.PlayAudio(fireAudioId, owner.fireTrans.position);
        }

        private void _ShowFireEffects(GameUnit targetEnemy)
        {
            var rawWeaponConfig = owner.rawConfig;
            var rootObj = owner.rootObj;
            var fireTrans = owner.fireTrans;
            var fireEffectId = rawWeaponConfig.FireEffectId;
            if (fireEffectId > 0)
            {
                var rot = fireTrans.rotation;
                EffectManager.instance.PlayEffectById(fireEffectId, fireTrans.position, rot, fireTrans);
            }

            var groundEffectId = GLConfig.Inst.data.GroundFireEffectId;
            if (groundEffectId > 0)
            {
                var firePos = fireTrans.position;
                firePos.y = 0.1f;
                EffectManager.instance.PlayEffectById(groundEffectId, firePos);
            }

            var lineEffectId = rawWeaponConfig.FlyEffectId;
            if (lineEffectId > 0 && PerformanceManager.instance.data.enableBulletTail)
            {
                if (targetEnemy == null || targetEnemy.Node == null || targetEnemy.Node.GameObject == null) return;
                _EmitLine(fireTrans, targetEnemy.Node.GameObject.transform, rawWeaponConfig.BulletFlySpeed);
            }
        }

        private void _EmitLine(Transform start,
            Transform end,
            float flySpeed)
        {
            var rawWeaponConfig = owner.rawConfig;
            // line.effect.transform.LookAt(end, Vector3.up);
            var endPos = end.position;
            var startPos = start.position;
            endPos.y = startPos.y * 0.5f;
            var toEnd = endPos - startPos;
            var angle = Vector3.SignedAngle(Vector3.forward, toEnd, Vector3.up);

            var effect = EffectManager.instance.PlayEffectById(rawWeaponConfig.FlyEffectId, startPos, Quaternion.Euler(0, angle, 0));
            var totalDistance = toEnd.magnitude;
            var flyLogic = ObjPoolManager.instance.Get<BulletFlyLogic>();
            flyLogic.Ctor(startPos, endPos, totalDistance / flySpeed);
            effect.AddLogic(flyLogic);
        }

    }
}