using Base;
using Data;
using Entity;
using Prefab;
using System;
using System.Collections.Generic;
using Managers;
using UnityEngine;
using Object = UnityEngine.Object;

namespace Item
{
    public class WeaponResource : ItemResource
    {
        public Attributes Attributes { get; private set; }
        public BulletDef Bullet { get; private set; }
        public WeaponType Type { get; private set; }

        public IReadOnlyList<Sprite> AttackAnimation { get; private set; }
        public float AttackAnimationTime { get; private set; }
        public float AttackCooldown => 1f / Attributes.attackSpeed;
        public float AttackDetectionTime { get; private set; }
        public bool UseEntityAttackAnimation { get; private set; }

        /// <summary>
        /// 构造函数：通过 WeaponDef 对象初始化 WeaponResource。
        /// </summary>
        /// <param name="def">武器的定义对象。</param>
        /// <exception cref="ArgumentNullException">如果传入的 WeaponDef 为 null，则抛出此异常。</exception>
        public WeaponResource(WeaponDef def)
            : base(def) // 调用基类 ItemResource 的构造函数，直接传入 WeaponDef。
        {
            // 参数校验：确保 WeaponDef 对象不为空，避免空引用异常。
            if (def == null)
            {
                throw new ArgumentNullException(nameof(def), "创建 WeaponResource 时，WeaponDef 不能为 null。");
            }

            Bullet = def.bullet;
            // 初始化武器的属性。Attributes 对象通过 WeaponDef 中的属性数据进行构建。
            Attributes = new Attributes(def.attributes);
            // 初始化武器类型，直接从 WeaponDef 定义中获取。
            Type = def.type;

            AttackAnimation = PackagesImageManager.Instance.GetSprites(def.attackAnimation);
            AttackAnimationTime = AttackAnimation.Count / FPS;
            AttackDetectionTime = def.attackDetectionTime;
            UseEntityAttackAnimation = def.useEntityAttackAnimation;
        }
    }
}