using Cysharp.Threading.Tasks;
using System;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using UVC.Extension;
using UVC.UI;
using UVC.UI.Loading;

namespace UVC.Factory.Playback.UI
{
    public class UIPlayback : MonoBehaviour
    {

        private static UIPlayback instance;
        public static UIPlayback Instance
        {
            get
            {
                if (instance == null) instance = CreateUIPlayBack();
                return instance;
            }
        }

        private static UIPlayback CreateUIPlayBack()
        {
            GameObject prefab = Resources.Load<GameObject>("Prefabs/Factory/Playback/UIPlayback");
            GameObject go = GameObject.Instantiate(prefab);
            return go.GetComponent<UIPlayback>();
        }
                
        [SerializeField]
        [Tooltip("종료 버튼")]
        private Button exitButton;
        [SerializeField]
        [Tooltip("종료 버튼")]
        private TextMeshProUGUI dateTimeTxt0;
        [SerializeField]
        [Tooltip("종료 버튼")]
        private TextMeshProUGUI dateTimeTxt1;
        [SerializeField]
        [Tooltip("play 버튼")]
        private Button playButton;
        [SerializeField]
        [Tooltip("play 버튼 이미지")]
        private Image playButtonImage;
        [SerializeField]
        [Tooltip("play 버튼 이미지 Sprite")]
        private Sprite playButtonImagePlay;
        [SerializeField]
        [Tooltip("play 버튼 Puase 이미지 Sprite")]
        private Sprite playButtonImagePause;
        [SerializeField]
        [Tooltip("Speed Slider")]
        private UISliderWithLabel sliderSpeed;
        [SerializeField]
        [Tooltip("투명 조절 Slider")]
        private SliderWithEvent opacitySlider;
        [SerializeField]
        [Tooltip("Progress Bar")]
        private UIPlaybackProgressBar progressBar;
        [SerializeField]
        private CanvasGroup canvasGroup;
        [SerializeField]
        private UIDragger uiDragger;

        private bool isPlaying = false;
        private bool preparingData = false;

        private string date;
        private string time;
        private string fileName;

        private bool isTick = false;
        private bool IsTick
        {
            get => isTick;
            set
            {
                if (isTick != value)
                {
                    var temp = isTick;
                    isTick = value;
                    if (!temp && value) OnTimer().Forget();
                }
            }
        }

        private void Init()
        {
            exitButton.onClick.AddListener(OnClickExit);
            playButton.onClick.AddListener(OnClickPlay);

            progressBar.OnChangeValue += OnChangeProgress;
            sliderSpeed.OnChangeValue += OnChangeSpeed;
            opacitySlider.onValueChanged.AddListener(OnValueChangedOpcity);
        }



        private void OnDestroy()
        {
            exitButton.onClick.RemoveListener(OnClickExit);
            playButton.onClick.RemoveListener(OnClickPlay);
            progressBar.OnChangeValue = null;
            sliderSpeed.OnChangeValue = null;
            opacitySlider.onValueChanged.RemoveListener(OnValueChangedOpcity);
            if (isPlaying) IsTick = false;
        }

        public void Show()
        {
            if (playButton == null) Init();
            gameObject.SetActive(true);
            if (transform.parent == null)
            {
                var canvases = GameObject.FindObjectsByType<Canvas>(FindObjectsSortMode.None);
                foreach (var canvas in canvases)
                {
                    if (canvas.name == "ModalCanvas")
                    {
                        transform.SetParent(canvas.transform, false);
                        uiDragger.SetDragArea(canvas.transform as RectTransform);
                        break;
                    }
                }
            }
        }

        public void Hide()
        {
            UpdateTimeScale(1);
            IsTick = false;
            gameObject.SetActive(false);
        }

        private void OnClickExit()
        {
            UILoading.Show();
            isPlaying = false;
            UpdatePlayState();
            Hide();
            PlaybackService.Instance.Exit();
            
        }

        private void OnClickPlay()
        {
            isPlaying = !isPlaying;
            UpdatePlayState();
        }

        private void OnChangeProgress(int newValue)
        {
            ChangePlayTime().Forget();
        }

        private void OnChangeSpeed(int newValue)
        {
            if (isPlaying)
            {
                //if (Time.timeScale != sliderSpeed.Value) UpdateTimeScale(sliderSpeed.Value);
                UpdateTimeScale(sliderSpeed.Value);
            }
            else
            {
                UpdateTimeScale(1);
            }
        }

        private void OnValueChangedOpcity(float newValue)
        {
            canvasGroup.alpha = opacitySlider.value;
        }


        private async UniTaskVoid ChangePlayTime()
        {

            bool tempIsPlaing = isPlaying;
            isPlaying = false;
            int newSecond = (int)progressBar.Value;
            if (newSecond == progressBar.MaxValue)
            {
                newSecond -= 60;
                progressBar.Value = newSecond;
            }
            preparingData = true;
            progressBar.Interactable = !preparingData;
            IsTick = false;
            UILoading.Show();
            UpdatePlayState();
            await UniTask.WaitForSeconds(0.5f);
            int minute = (int)newSecond / 60;
            int seconds = (int)newSecond % 60;
            await PlaybackService.Instance.DispatchBaseInfoData(date, time, fileName, minute.ToString("00"), seconds.ToString("00"));
            preparingData = false;
            progressBar.Interactable = !preparingData;
            if (isPlaying != tempIsPlaing)
            {
                isPlaying = tempIsPlaing;
                UpdatePlayState();
            }
            UILoading.Hide();
            await UniTask.WaitForSeconds(0.5f);
        }

        public async UniTask SetData(string date, string time, string fileName)
        {
            Init();
            this.date = date;
            this.time = time;
            this.fileName = fileName;
            Debug.Log($"UIPlayback SetData {date} {time}");

            int timeInt = int.Parse(time);
            dateTimeTxt0.text = dateTimeTxt1.text = date.Substring(2).Replace("-", ".");
            progressBar.Init(timeInt);
            sliderSpeed.Init();

            UpdateTimeScale(1);
            canvasGroup.alpha = opacitySlider.value = 1;
            preparingData = true;
            progressBar.Interactable = !preparingData;
            isPlaying = false;

            UpdatePlayState();

            await PlaybackService.Instance.DispatchBaseInfoData(date, time, fileName);
            preparingData = false;
            progressBar.Interactable = !preparingData;
        }

        private void UpdatePlayState()
        {
            playButton.enabled = false;
            progressBar.enabled = false;
            playButtonImage.sprite = isPlaying ? playButtonImagePause : playButtonImagePlay;
            IsTick = isPlaying;
            progressBar.enabled = true;
            playButton.enabled = true;
            OnChangeSpeed(sliderSpeed.Value);
        }


        private async UniTaskVoid OnTimer()
        {
            if (progressBar.Value == progressBar.MaxValue)
            {
                if (isPlaying) OnClickPlay();
                return;
            }
            progressBar.Value += 1;
            //PlaybackService.Instance.DispatchingTimelineEvent = false;
            PlaybackService.Instance.DispatchRealTimeData(progressBar.Value, sliderSpeed.Value).Forget();

            if (isTick)
            {
                //PlaybackService.Instance.DispatchingTimelineEvent = true;
                await UniTask.Delay(TimeSpan.FromMilliseconds(1000 / sliderSpeed.Value));
                OnTimer().Forget();
            }
        }

        private void UpdateTimeScale(float timeScale)
        {
            PlaybackService.Instance.TimeScale = timeScale;
        }

    }

}