using System.Collections;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream
{
    public class MainUIController : Singleton<MainUIController>
    {
        private const string TVScene = "TV Scene";
        private const string BlackImage = "Fade Image";
        private const string NewsImage = "News";
        private const string ObjPanel = "Show Obj";
        
        #region 主场景图片

        private FadeImage _tvScene;
        private FadeImage _blackImage;
        private FadeImage _news;
        private GameObject _objPanel;
        private FadeImage _objImage;

        #endregion
        
        protected override void Awake()
        {
            base.Awake();
            InitChildObj();
        }
        
        #region 基本淡入淡出

        public void FadeIn(float duration)
        {
            _blackImage.FadeIn(duration);
        }

        public IEnumerator FadeInSync(float duration)
        {
            return _blackImage.FadeInSync(duration);
        }
        
        public void FadeOut(float duration)
        {
            _blackImage.FadeOut(duration);
        }

        public IEnumerator FadeOutSync(float duration)
        {
            return _blackImage.FadeOutSync(duration);
        }

        #endregion

        #region TV场景淡入淡出

        public void TVFadeIn(float duration)
        {
            _tvScene.FadeIn(duration);
            _news.FadeIn(duration);
        }

        public IEnumerator TVFadeInSync(float duration)
        {
            _news.FadeIn(duration);
            return _tvScene.FadeInSync(duration);
        }
        
        public void TVFadeOut(float duration)
        {
            _tvScene.FadeOut(duration);
            _news.FadeOut(duration);
        }

        public IEnumerator TVFadeOutSync(float duration)
        {
            _news.FadeOut(duration);
            return _tvScene.FadeOutSync(duration);
        }

        public void SwitchTV(string newsName)
        {
            _news.SwitchImage($"Art/Background/{newsName}");
        }

        #endregion
        
        /// <summary>
        /// 隐藏整个UI
        /// </summary>
        public void HideMainUI()
        {
            gameObject.SetActive(false);
        }

        /// <summary>
        /// 显示物体
        /// </summary>
        /// <returns>协程</returns>
        public IEnumerator ShowObj(string picName)
        {
            _objPanel.gameObject.SetActive(true);
            _objImage.SwitchImage($"Art/Obj/{picName}");
            return _objImage.FadeInSync(1);
        }
        
        /// <summary>
        /// 隐藏物体
        /// </summary>
        /// <returns>协程</returns>
        public IEnumerator HideObj()
        {
            yield return _objImage.FadeOutSync(1);
            _objPanel.SetActive(false);
        }

        private void InitChildObj()
        {
            var rawTvScene = transform.Find(TVScene).gameObject.GetComponent<Image>();
            _tvScene = new FadeImage(rawTvScene);
            
            var rawBlackImage = transform.Find(BlackImage).gameObject.GetComponent<Image>();
            _blackImage = new FadeImage(rawBlackImage);

            var rawNews = transform.Find(NewsImage).gameObject.GetComponent<Image>();
            _news = new FadeImage(rawNews);

            _objPanel = transform.Find(ObjPanel).gameObject;
            var rawObj = _objPanel.transform.GetChild(0).GetComponent<Image>();
            _objImage = new FadeImage(rawObj);
        }
    }
}