using System;
using AI;
using Data;
using Entity;
using Unity.VisualScripting;
using UnityEngine;

namespace Prefab
{
    public class EntityPrefab : MonoBehaviour
    {
        public Entity.Entity entity;
        public void Init(Data.PawnDef pawnDef)
        {
            entity.runtimeAttributes = pawnDef.attributes.Clone();
            entity.aiTree = ConvertToAIBase(pawnDef.behaviorTree);
        }
        public static AIBase ConvertToAIBase(BehaviorTreeDef behaviorTreeDef)
        {
            if (behaviorTreeDef == null)
                return null;
            AIBase aiBase = CreateAIBaseInstance(behaviorTreeDef.className);
            if (behaviorTreeDef.childTree != null)
            {
                foreach (var child in behaviorTreeDef.childTree)
                {
                    if (child != null)
                    {
                        aiBase.children.Add(ConvertToAIBase(child));
                    }
                }
            }
            return aiBase;
        }

        // 使用反射根据 className 创建具体的 AIBase 子类实例
        private static AIBase CreateAIBaseInstance(string className)
        {
            if (string.IsNullOrEmpty(className))
                throw new ArgumentException("className 不能为空");

            // 定义可能的命名空间列表
            var possibleNamespaces = new[] { "AI"};

            foreach (var ns in possibleNamespaces)
            {
                try
                {
                    // 获取当前程序集
                    var assembly = typeof(AIBase).Assembly;

                    // 尝试查找类型
                    var type = assembly.GetType($"{ns}.{className}");

                    if (type != null && typeof(AIBase).IsAssignableFrom(type))
                    {
                        // 如果找到合适的类型，则创建实例并返回
                        return (AIBase)Activator.CreateInstance(type);
                    }
                }
                catch
                {
                    // 忽略单个命名空间的错误，继续尝试下一个命名空间
                }
            }

            // 如果所有命名空间都未找到对应的类型，抛出异常
            throw new InvalidOperationException($"无法找到类型 {className} 或该类型不是 AIBase 的子类");
        }
    }
}