using System;
using System.Collections;
using AibisDream.Framework;
using AibisDream.Kit;
using AibisDream.SaveSystem;
using UnityEngine;

namespace AibisDream.FixSystem
{
    public class FixSystemCenter : Singleton<FixSystemCenter>
    {
        public FixState CurState => StateMachine.CurState;

        public FixState defaultState = FixState.Default;
        
        private readonly FixSystemData _data = new();

        public override void OnSingletonInit()
        {
            SystemDic ??= new IOCContainer();
            // 初始化状态机
            StateMachine = new FixStateMachine(_data);
            StartCoroutine(StateMachine.Init(defaultState));
            // 注册
            DeepRepairDataRegistry.RegisterData(_data);
        }

        public override void OnSingletonDestroy()
        {
            // 注销
            DeepRepairDataRegistry.UnregisterData<FixSystemData>();
            CameraKit.Instance.RemoveAllCam();
            GameManager.Instance.StartCoroutine(StateMachine.QuitState());
            SystemDic.Clear();
        }
        
        #region 系统索引

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

        #endregion

        #region 状态机相关

        public static FixStateMachine StateMachine;

        #endregion

        #region 快照

        /// <summary>捕获 Fix 场景宏观快照。</summary>
        public FixSnapshotDto CaptureSnapshot()
        {
            var bodyModule = SystemDic.Get<BodyModuleSystem>();
            var eyeSystem = SystemDic.Get<EyeSystem>();
            var repairManager = RepairSystemManager.Instance;

            return new FixSnapshotDto
            {
                state = StateMachine.CurState.ToString(),
                args = _data.args,
                moduleState = bodyModule?.GetCurrentModuleState().ToString(),
                eyeColorState = eyeSystem?.GetCurrentColorState().ToString(),
                isSystemOn = FixPanelSystem.Instance?.IsSystemOn ?? false,
                currentRepairSystemType = repairManager?.GetCurrentSystemType()?.Name
            };
        }

        /// <summary>还原 Fix 场景宏观快照。调用 EnterImmediate 跳过动画。</summary>
        public IEnumerator RestoreSnapshot(FixSnapshotDto dto)
        {
            if (dto == null || string.IsNullOrEmpty(dto.state))
            {
                yield break;
            }

            if (!Enum.TryParse<FixState>(dto.state, out var state))
            {
                Debug.LogWarning($"[FixSystemCenter] 无法解析 FixState: {dto.state}");
                yield break;
            }

            yield return StateMachine.SwitchStateImmediate(state, dto.args ?? "");
        }

        #endregion
    }

    [Serializable]
    [LoadIndex(2)]
    public class FixSystemData : IData
    {
        public FixState curState;
        public string args;

        public IEnumerator Load()
        {
            yield return FixSystemCenter.StateMachine.SwitchState(curState, args);
        }
    }
}