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

public class RewardButton : MonoBehaviour
{
    [SerializeField] protected Button _button;
    [SerializeField] private Text _takeMessage;
    [SerializeField] private Text _loadingMessage;
    [SerializeField] private Image _statusIcon;
    [Header("Prefabs")]
    [SerializeField] private Sprite _loadingSprite;
    [SerializeField] private Sprite _readySprite;
    private Action<bool> _rewardCallback;

    private string _placement = "non";

    private void Awake()
    {
        _button.onClick.AddListener(ClickHandler);
        Init();
    }

    protected virtual void Init() { }

    public void SetPlacement(string placement)
    {
        _placement = placement;
    }

    public void SetHandler(Action<bool> handler)
    {
        _rewardCallback = handler;
    }
    
    public virtual void Begin()
    {
        StartCoroutine(RewardRoutine());
    }
    
    private IEnumerator RewardRoutine()
    {
        _takeMessage.gameObject.Hide();
        _loadingMessage.gameObject.Show();
        yield return ADsLoadingRoutine();
        _takeMessage.gameObject.Show();
        _loadingMessage.gameObject.Hide();
        OnRewardLoaded();
    }

    protected virtual void OnRewardLoaded()
    {
        
    }
    
    private IEnumerator ADsLoadingRoutine()
    {
        _button.gameObject.Show();

        do
        {
            bool rewardAvailable = Ads.HasRewardVideo();
            _button.interactable = rewardAvailable;
            _statusIcon.sprite = rewardAvailable ? _readySprite : _loadingSprite;
            yield return null;
        }
        while (_button.interactable == false);
    }
    
    private void ClickHandler()
    {
        Ads.ShowReward(
            _placement,
            () =>
            {
                _button.gameObject.Hide();
                _rewardCallback.Invoke(true);
            },
            null,
            () =>
            {
                _rewardCallback.Invoke(false);
            });
    }
}