using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using FSEvent;
using FSFile;
using FSRole;
using FSAssist;
using LitJson;

namespace FSBuff {
    /*
     * Buff管理器，负责Buff的创建和挂载
    */
    public class BuffManager : Singleton<BuffManager> {
        JsonData buffValue = null;     // 保存的Buff数据

        public BuffManager() {
            ReadBuffData();
            InitListener();
        }

        /*
         * 从文本中获取BUFF数据
        */
        private void ReadBuffData() {
            string json = FileManager.Instance.ReadResourceText("Jsons/buffs");
            if (json != null) {
                Debug.Log("读取到 json 字符串 : " + json);
                try {
                    buffValue = JsonMapper.ToObject(json);
                } catch (JsonException e) {
                    Debug.Log(e.ToString());
                }
            }
        }

        /*
         * 初始化监听
        */
        private void InitListener() {
            EventListener.Instance.RegisterEvent(EventEnum.EVENT_BUFF_EXECUTE, BuffExecute);
            EventListener.Instance.RegisterEvent(EventEnum.EVENT_BUFF_CANCLE, BuffCancle);
        }

        /*
         * 给角色添加挂载BUFF
        */
        public void LoadBuff(GameObject obj, string id) {
            JsonData oneValue = buffValue[id];
            if (oneValue != null && oneValue.IsObject) {
                Buff buff = new Buff();
                // 获取对应的目标
                Role role = obj.GetComponent<Role>();
                // 对应的目标
                buff.Target = role;
                // 同时从json对象中提取数据
                buff.Value = AssistMethods.ReadInt(oneValue, "value");
                buff.Round = AssistMethods.ReadInt(oneValue, "round");
                buff.ID = id;
                buff.Overlay = 1;

                // 给角色挂载Buff
                role.AddBuff(buff);
                //// 挂载后直接运行
                //buff.Execute();
            } else {
                throw new System.Exception("没有找到ID所对应的BUFF");
            }
        }

        /*
         * Buff执行，根据ID来进行相应的处理
        */
        private void BuffExecute(Dictionary<string, object> info) {
            Debug.Log("Buff 开始运行");

            Buff buff = (Buff)info["buff"];
            if (buff != null) {
                buff.Target.CurrentAttr.Hp -= buff.Value;
            }
        }

        /*
         * Buff取消，根据ID来进行相应的处理
        */
        private void BuffCancle(Dictionary<string, object> info) {
            Debug.Log("Buff 时间到");
        }
    }
}