using System.Collections.Generic;
using BehaviorDesigner.Runtime;
using UnityEngine;

namespace CoreGame.Render
{
    [Combat]
    public class AIComponent : ProxyBase
    {
        public string btTreePath;
        // 一个实体只规划一棵树
        internal BehaviorTree bt;
        internal ExternalBehaviorTree ebt;
        internal readonly List<int> targetList = new(); // 临时存储目标列表
        internal int abilitySeq = 0;  // 主动技
        public CombatEntity TargetEnt => targetList.Count > 0 ? Contexts.Combat.GetEntity(targetList[0]) : default;
  
        protected override void Initialize(GameObject go, CombatEntity ent)
        {
            var componentsInChildren = go.GetComponentsInChildren<BehaviorTree>();
            if (componentsInChildren.Length > 0)
                bt = componentsInChildren[0];
            else
                bt = go.AddComponent<BehaviorTree>();

            if (string.IsNullOrEmpty(btTreePath))
                btTreePath = BlackboardSrv.GetBehaviourTreePath(ent.creationIndex);
            
            if (string.IsNullOrEmpty(btTreePath))
                return;

            ebt = SyncAssetLoader.GetAssetObject<ExternalBehaviorTree>("ExternalBehaviorTree", btTreePath);
            if (ebt == null)
                return;
            
            bt.ExternalBehavior = ebt;
            bt.StartWhenEnabled = false;
            bt.RestartWhenComplete = true;
            bt.ownerEnt = ent;
            // mono的
            EnableBehavior();
        }
        
        public void EnableBehavior()
        {
            if (bt != null)
                bt.EnableBehavior();
        }
        
        public void DisableBehavior()
        {
            if (bt != null)
                bt.DisableBehavior();
        }
        
        public void SendEvent(string key)
        {
            if (bt != null)
                bt.SendEvent(key);
        }

        protected override void OnReset()
        {
            targetList.Clear();
            // m_Blackboard.Clear();
            DisableBehavior();
            bt = null;
            btTreePath = null;
        }
    }
}