using System.Collections.Generic;
using Opsive.BehaviorDesigner.Runtime.Tasks;
using Opsive.GraphDesigner.Runtime;
using Opsive.GraphDesigner.Runtime.Variables;
using Opsive.Shared.Utility;
using UnityEngine;

namespace Cielonos.MainGame.Characters.AI
{
    [Description("向指定的目标（或自身）派发一个上下文事件（ContextEvent），以便其行为树中的 HasReceivedContextEvent 节点能够响应。")]
    [NodeIcon("Assets/Sprites/Icon/Megaphone.png")] 
    [Category("Cielonos/Events")]
    public class DispatchContextEvent : AutomataActionBase
    {
        [Tooltip("派发的目标列表。如果留空或未指定，则默认派发给 AI 自己。目标 GameObject 必须含有 BehaviorSubcontroller 组件。")]
        public List<SharedVariable<GameObject>> targetList;
        
        [Tooltip("派发的事件名称")]
        public SharedVariable<string> eventName;

        [Tooltip("（额外数据）参数1")]
        public SharedVariable arg1;
        [Tooltip("（额外数据）参数2")]
        public SharedVariable arg2;
        [Tooltip("（额外数据）参数3")]
        public SharedVariable arg3;

        public override TaskStatus OnUpdate()
        {
            if (eventName == null || string.IsNullOrEmpty(eventName.Value))
            {
                Debug.LogWarning("[DispatchContextEvent] 未指定事件名称，派发失败。");
                return TaskStatus.Failure;
            }

            object val1 = GetValueSafe(arg1);
            object val2 = GetValueSafe(arg2);
            object val3 = GetValueSafe(arg3);

            if (targetList != null && targetList.Count > 0)
            {
                // 发送给目标列表中的所有单位
                foreach (SharedVariable<GameObject> targetGo in targetList)
                {
                    if (targetGo != null)
                    {
                        var bSc = targetGo.Value.GetComponent<BehaviorSubcontroller>();
                        if (bSc != null)
                        {
                            bSc.DispatchContextEvent(eventName.Value, val1, val2, val3);
                        }
                        else
                        {
                            // 尝试向其子节点的对象发送
                            var charBase = targetGo.Value.GetComponent<CharacterBase>();
                            if (charBase != null && charBase is Automata automata && automata.behaviorSc != null)
                            {
                                automata.behaviorSc.DispatchContextEvent(eventName.Value, val1, val2, val3);
                            }
                        }
                    }
                }
            }
            else
            {
                // 列表为空，默认发给自己
                if (behaviorSc != null)
                {
                    behaviorSc.DispatchContextEvent(eventName.Value, val1, val2, val3);
                }
            }

            return TaskStatus.Success;
        }

        private object GetValueSafe(SharedVariable sharedVar)
        {
            return sharedVar?.GetValue() == null ? null : sharedVar.GetValue();
        }

        public override void Reset()
        {
            base.Reset();
            eventName = "";
            targetList = null;
            arg1 = null;
            arg2 = null;
            arg3 = null;
        }
    }
}