using System.Collections;
using UnityEngine;

public class RankView : MonoBehaviour
{
    [SerializeField] private RectTransform RankSpawnPoint;
    [SerializeField] private RectTransform RankEndPoint;

    [SerializeField] private RankFrame RankFramePrefab;

    [SerializeField] private RankFrame CurrentRankFrame;
    [SerializeField] private float AnimationSpeed;
    [SerializeField] private AnimationCurve Curve;

    [SerializeField] private CanvasGroup NewRankLabel;

    public void Initialize()
    {
        NewRankLabel.alpha = 0;
        RankSystem.OnNewRank += RankSystem_OnNewRank;
    }

    private void OnDestroy()
    {
        RankSystem.OnNewRank -= RankSystem_OnNewRank;
    }

    private void RankSystem_OnNewRank(RankSystem.RankInfo rankInfo)
    {
        StartCoroutine(ShowNewRank(rankInfo));
    }

    IEnumerator ShowNewRank(RankSystem.RankInfo rankInfo)
    {
        //Заспавнить и настроить новый ранг
        var newRankGO = Instantiate(RankFramePrefab.gameObject, RankSpawnPoint.position, Quaternion.identity, GetComponent<RectTransform>());
        var newRankFrame = newRankGO.GetComponent<RankFrame>();
        newRankFrame.SetAlpha(0);
        newRankFrame.SetRank(rankInfo);

        var rect = newRankGO.GetComponent<RectTransform>();
        rect.localRotation = Quaternion.identity;

        //проявить новый ранг
        float t = 0;
        while (t < 1)
        {
            t += Time.deltaTime * AnimationSpeed*2;
            t = Mathf.Clamp01(t);
            
            NewRankLabel.alpha = t;
            newRankFrame.SetAlpha(t);
            yield return null;
        }

        yield return new WaitForSeconds(3);

        //переместить новый на место старого + растворить старый
        t = 0;
        while (t < 1)
        {
            t += Time.deltaTime * AnimationSpeed;
            t = Mathf.Clamp01(t);

            float t1 = Curve.Evaluate(t);

            rect.anchoredPosition = Vector2.Lerp(RankSpawnPoint.anchoredPosition, RankEndPoint.anchoredPosition, t1);

            NewRankLabel.alpha = 1-t1;
            CurrentRankFrame.SetAlpha(1-t);
            yield return null;
        }

        Destroy(CurrentRankFrame.gameObject);
        CurrentRankFrame = newRankFrame;

        yield return null;
    }
}