using AibisDream.Framework;
using AibisDream.Kit;
using UnityEngine;

namespace AibisDream.FixSystem
{
    public class FixSystemCenter : Singleton<FixSystemCenter>
    {
        public FixState curState;

        public override void OnSingletonInit()
        {
            SystemDic ??= new IOCContainer();
            InitTransitionDic();
            
            // TODO 这个回头要改
            curState = FixState.Clinic;
        }

        #region 系统索引

        // 容纳System
        public static IOCContainer SystemDic = new();

        #endregion

        #region 转场管理

        private static readonly StateDictionary<ITransitionCommand> TransitionDic = new();

        private void InitTransitionDic()
        {
            TransitionDic.Add(FixState.Clinic, FixState.BodyModule, new ClinicToBodyModuleCommand());
            TransitionDic.Add(FixState.BodyModule, FixState.Clinic, new BodyModuleToClinicCommand());
            TransitionDic.Add(FixState.BodyModule, FixState.Engine, new BodyModuleToEngineCommand());
            TransitionDic.Add(FixState.Engine, FixState.BodyModule, new EngineToBodyModuleCommand());
            TransitionDic.Add(FixState.Clinic, FixState.Engine, new ClinicToEngineCommand());
            TransitionDic.Add(FixState.Engine, FixState.Clinic, new EngineToClinicCommand());
            TransitionDic.Add(FixState.BodyModule, FixState.Eye, new BodyModuleToEyeCommand());
            TransitionDic.Add(FixState.Eye, FixState.BodyModule, new EyeToBodyModuleCommand());
            TransitionDic.Add(FixState.BodyModule, FixState.Memory, new BodyModuleToMemoryCommand());
            TransitionDic.Add(FixState.Memory, FixState.BodyModule, new MemoryToBodyModuleCommand());
            TransitionDic.Add(FixState.BodyModule, FixState.UF, new BodyModuleToUFCommand());
            TransitionDic.Add(FixState.UF, FixState.BodyModule, new UFToBodyModuleCommand());
            
        }
        
        /// <summary>
        /// 执行转场
        /// </summary>
        /// <param name="nextState">需要转换的状态</param>
        public ITransitionCommand TransToNextState(FixState nextState)
        {
            // 没存过的先打个日志报错
            if (!TransitionDic.TryGetValue(curState, nextState, out var command))
            {
                Debug.Log($"源为{curState.ToString()}, 目标为{nextState.ToString()}, 转场命令不存在");
                return null;
            }
            
            curState = nextState;
            return command;
        }

        #endregion
    }
}