using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using AibisDream.Kit;
using UnityEngine;
using Yarn.Unity;

namespace AibisDream
{
    public class ActorManager : Singleton<ActorManager>
    {
        #region 索引

        private Transform _actorRoot;
        private Dictionary<string, ActorSlot> _slotDict;
        private Dictionary<string, AbsActor> _actorDict;

        private ActorFactory _actorFactory;

        #endregion

        public override void OnSingletonInit()
        {
            InitRefs();
        }

        private void InitRefs()
        {
            _actorRoot = transform.Find("ActorRoot");
            _slotDict = new Dictionary<string, ActorSlot>();
            foreach (var child in transform.Find("Slots").GetComponentsInChildren<ActorSlot>())
            {
                _slotDict[child.slotName] = child;
            }
            
            _actorDict = new Dictionary<string, AbsActor>();
            _actorFactory = new ActorFactory(_actorRoot);
        }

        public void InitActor(string actorName, string slotName, ActorType actorType)
        {
            var slot = _slotDict[slotName];
            // 生成新组件
            var actor = _actorFactory.CreateActor(actorName, slot, actorType);
            // 保存
            _actorDict.Add(actorName, actor);
        }

        public bool TryFindActor(string actorOrSlot, out AbsActor actor)
        {
            if (_actorDict.TryGetValue(actorOrSlot, out actor))
            {
                return true;
            }

            actor = _actorDict.Values.FirstOrDefault(item => item.SlotName == actorOrSlot);
            return actor != null;
        }

        public void ChangeSlot(string actorOrSlot, string targetSlot)
        {
            if (!_slotDict.TryGetValue(targetSlot, out var targetSlotObj)) return;
            if (!TryFindActor(actorOrSlot, out var actor)) return;
            actor.SetSlot(targetSlotObj);
        }
    }

    public static class ActorYarnCommand
    {
        private const string ClinicSlotName = "clinic";
        
        [YarnCommand("init_actor")]
        public static void InitActor(string actorName, string slotName = ClinicSlotName, string actorType = "Anima")
        {
            if (Enum.TryParse<ActorType>(actorType, out var actorTypeEnum))
            {
                ActorManager.Instance.InitActor(actorName, slotName, actorTypeEnum);
            }
            else
            {
                Debug.Log($"Actor类型{actorType}有问题");
            }
        }

        [YarnCommand("change_actor_state")]
        public static void PlayAnima(string animaName, string slotOrActorName = ClinicSlotName)
        {
            if (ActorManager.Instance.TryFindActor(slotOrActorName, out var actor))
            {
                actor.ChangeState(animaName);
            }
        }

        [YarnCommand("change_actor_state_async")]
        public static IEnumerator PlayAnimaAsync(string animaName, string slotOrActorName = ClinicSlotName)
        {
            if (ActorManager.Instance.TryFindActor(slotOrActorName, out var actor))
            {
                yield return actor.ChangeStateAsync(animaName);
            }
        }

        [YarnCommand("actor_fade_in")]
        public static IEnumerator ActorFadeIn(string actorName = ClinicSlotName, float duration = 1)
        {
            if (ActorManager.Instance.TryFindActor(actorName, out var actor))
            {
                yield return actor.FadeInAsync(duration);
            }
        }

        [YarnCommand("actor_fade_out")]
        public static IEnumerator ActorFadeOut(string actorName = ClinicSlotName, float duration = 1)
        {
            if (ActorManager.Instance.TryFindActor(actorName, out var actor))
            {
                yield return actor.FadeOutAsync(duration);
            }
        }

        [YarnCommand("change_actor_slot")]
        public static void ChangeSlot(string actorOrSlot, string targetSlot)
        {
            ActorManager.Instance.ChangeSlot(actorOrSlot, targetSlot);
        }

        [YarnCommand("show_actor")]
        public static void ShowActor(string actorName = ClinicSlotName)
        {
            if (ActorManager.Instance.TryFindActor(actorName, out var actor))
            {
                actor.Show();
            }
        }

        [YarnCommand("hide_actor")]
        public static void HideActor(string actorName = ClinicSlotName)
        {
            if (ActorManager.Instance.TryFindActor(actorName, out var actor))
            {
                actor.Hide();
            }
        }
    }
}