using System.Collections;
using AibisDream.Framework;
using AibisDream.Utility;
using DG.Tweening;
using UnityEngine;

namespace AibisDream
{
    /// <summary>
    /// 角色基类
    /// 有Sprite实现和Animator实现
    /// </summary>
    public abstract class AbsActor : MonoBehaviour
    {
        public string ActorName { get; private set; }
        public string SlotName { get; private set; }
        protected SpriteRenderer spriteRenderer;

        public virtual void Init(string actorName, ActorSlot slot)
        {
            ActorName = actorName;
            spriteRenderer = GetComponent<SpriteRenderer>();
            SetSlot(slot);
        }

        public virtual void Show()
        {
            spriteRenderer.SetAlpha(1);
        }

        public virtual void Hide()
        {
            spriteRenderer.SetAlpha(0);
        }
        
        public void SetSlot(ActorSlot slot)
        {
            transform.position = slot.Position;
            SlotName = slot.slotName;
            spriteRenderer.sortingOrder = slot.sortingOrder;
            spriteRenderer.sortingLayerID = slot.sortingLayer;
        }
        
        public virtual IEnumerator FadeInAsync(float duration)
        {
            yield return spriteRenderer.DOFade(1, duration).WaitForCompletion();
        }

        public virtual IEnumerator FadeOutAsync(float duration)
        {
            yield return spriteRenderer.DOFade(0, duration).WaitForCompletion();
        }

        public abstract void ChangeState(string stateName);

        public virtual IEnumerator ChangeStateAsync(string stateName)
        {
            ChangeState(stateName);
            yield break;
        }
    }

    // 工厂类
    public class ActorFactory
    {
        private readonly Transform _actorRoot;
        private readonly GameObject _actorAnimaPrefab;
        private readonly GameObject _spriteActorPrefab;
        
        public ActorFactory(Transform actorRoot)
        {
            _actorRoot = actorRoot;
            _actorAnimaPrefab = ResourceKit.LoadAssetSync<GameObject>(ConstRef.ActorPrefabName);
            _spriteActorPrefab = ResourceKit.LoadAssetSync<GameObject>(ConstRef.SpriteActorPrefabName);
        }
        
        public AbsActor CreateActor(string actorName, ActorSlot slot, ActorType actorType)
        {
            return actorType switch
            {
                ActorType.Sprite => CreateSpriteActor(actorName, slot),
                ActorType.Anima => CreateActorAnima(actorName, slot),
                _ => null
            };
        }
        
        private AbsActor CreateSpriteActor(string actorName, ActorSlot slot)
        {
            var actor = Object.Instantiate(_spriteActorPrefab, _actorRoot);
            actor.name = actorName;
            var actorAnima = actor.GetComponent<AbsActor>();
            actorAnima.Init(actorName, slot);
            return actorAnima;
        }
        
        private AbsActor CreateActorAnima(string actorName, ActorSlot slot)
        {
            var actor = Object.Instantiate(_actorAnimaPrefab, _actorRoot);
            actor.name = actorName;
            var actorAnima = actor.GetComponent<AbsActor>();
            actorAnima.Init(actorName, slot);
            return actorAnima;
        }
    }

    public enum ActorType
    {
        Sprite,
        Anima
    }
}