using System.Collections;
using UnityEngine;
using GameCore;
using asap.core;
using Game;
using TMPro;
using System.Threading.Tasks;

public class LoadingScreen : MonoBehaviour
{
    public LoadingProgressBar progressBar;
    public TMP_Text downloadSzie;
    public TMP_Text loadingInfo;
    public TMP_Text versionInfo;
    static LoadingScreen _instance;

    public static async Task<LoadingScreen> Show(float progress = 0)
    {
        GameDebug.Log("[LoadingScreen]Show");
        await ShowInit(progress);
        return _instance;
    }

    private static async Task ShowInit(float progress = 0)
    {
        SetLoadingInfo("");

        if (UIManager.Instance != null)
        {
            if (_instance == null)
            {
                GameObject loading = await UIManager.Instance.GetUIAsync(UITypes.FishingLoginPanel);

                if (loading != null)
                {
                    _instance = loading.GetComponent<LoadingScreen>();
                }
            }

            if (_instance != null)
            {
                ShowProgressBar();
                SetProgress(progress);
                UIManager.Instance.SetAlwaysTopSibling(_instance.transform);
                _instance.gameObject.SetActiveAsNeed(true);
            }
            else
            {
                GameDebug.LogError("[LoadingScreen]Show: Fail to get loading screen!");
            }
        }
        else
        {
            GameDebug.LogError("[LoadingScreen]Show: UIManager doesn't exist, fail to get loading screen!");
        }
    }

    public static void Hide()
    {
        GameDebug.Log("[LoadingScreen]Show");

        if (_instance != null)
        {
            _instance.StopAllCoroutines();

            if (UIManager.Instance != null)
            {
                UIManager.Instance.HideUI(UITypes.FishingLoginPanel);
            }
        }
    }

    public static bool isShowing()
    {
        bool is_showing = false;

        if (_instance != null && _instance.gameObject.activeSelf)
        {
            is_showing = true;
        }

        return is_showing;
    }

    public static bool isProgressShowing()
    {
        bool is_showing = false;

        if (_instance != null &&
            _instance.gameObject.activeSelf &&
            _instance.progressBar.gameObject.activeSelf)
        {
            is_showing = true;
        }

        return is_showing;
    }

    public static bool isComplete()
    {
        bool is_complete = true;

        if (_instance != null)
        {
            if (Mathf.Approximately(_instance.progressBar.progress, 1f))
            {
                is_complete = true;
            }
            else
            {
                is_complete = false;
            }
        }

        return is_complete;
    }

    public static void SetProgress(float progress, float tween_sec = 0)
    {
        //GameDebug.LogError($"SetProgress {progress}, {tween_sec}");
        if (_instance != null && _instance.progressBar != null)
        {
            _instance.progressBar.SetProgressValue(progress, tween_sec);
        }
    }

    public static void SetSubProgress(float progress, string info)
    {
        //GameDebug.LogError($"SetProgress {progress}, {tween_sec}");
        if (_instance != null && _instance.downloadSzie != null)
        {
            _instance.downloadSzie.text = info;
        }
    }

    public static void SetVersionInfo(string version)
    {
        if (_instance != null && _instance.versionInfo != null)
        {
            _instance.versionInfo.text = version;
        }
    }

    public static float GetProgress()
    {
        float progress = 0f;

        if (_instance != null)
        {
            progress = _instance.progressBar.progress;
        }

        return progress;
    }

    public static void SetLoadingInfo(string info)
    {
        if (_instance != null && _instance.loadingInfo != null)
        {
            _instance.loadingInfo.text = info;
        }
    }

    private Coroutine MoveTowardsCoroutine;

    public static void MoveTowards(float p1, float p2, float speed)
    {
        StopMoveTowards();
        _instance.MoveTowardsCoroutine = _instance.StartCoroutine(_instance.ProcessMoveTowards(p1, p2, speed));
    }

    public static void StopMoveTowards()
    {
        if (_instance.MoveTowardsCoroutine != null)
        {
            _instance.StopCoroutine(_instance.MoveTowardsCoroutine);
            _instance.MoveTowardsCoroutine = null;
        }
    }

    public static void ShowProgressBar()
    {
        GameDebug.Log("[LoadingScreen]ShowProgressBar");

        if (_instance != null)
        {
            _instance._ShowProgressBar();
        }
    }

    public void _ShowProgressBar()
    {
        if (progressBar != null)
        {
            progressBar.gameObject.SetActiveAsNeed(true);
        }
    }

    public static void ShowSubProgressBar()
    {
        GameDebug.Log("[LoadingScreen]ShowSubProgressBar");

        if (_instance != null)
        {
            _instance._ShowSubProgressBar();
        }
    }

    public void _ShowSubProgressBar()
    {
        if (downloadSzie != null)
        {
            downloadSzie.gameObject.SetActiveAsNeed(true);
        }
    }

    public static void HideProgressBar()
    {
        GameDebug.Log("[LoadingScreen]HideProgressBar");

        if (_instance != null)
        {
            _instance._HideProgressBar();
        }
    }

    private void _HideProgressBar()
    {
        progressBar.gameObject.SetActiveAsNeed(false);
        SetLoadingInfo("");
    }

    public static void HideSubProgressBar()
    {
        GameDebug.Log("[LoadingScreen]HideSubProgressBar");

        if (_instance != null)
        {
            _instance._HideSubProgressBar();
        }
    }

    private void _HideSubProgressBar()
    {
        downloadSzie.gameObject.SetActiveAsNeed(false);
    }

    private IEnumerator ProcessMoveTowards(float pp1, float pp2, float speed)
    {
        var p1 = pp1;
        var p2 = pp2;

        while (Mathf.Abs(p1 - p2) > Mathf.Epsilon)
        {
            p1 = Mathf.MoveTowards(p1, p2, speed * Time.unscaledDeltaTime);
            SetProgress(p1);
            yield return null;
        }

        SetProgress(p2);
        MoveTowardsCoroutine = null;
    }

    void OnDestroy()
    {
        //_instance = null;
    }
}