hellbound/Assets/Scripts/Game/UI/Windows/ItemRewardWindow.cs

using System;
using game;
using UnityEngine;


public enum RewardStatus { PlayerNeedsReward, PlayerRefused }
public delegate void RewardWindowResult(RewardStatus result);

public class ItemRewardWindow : ParameterlessWindow
{
    public override bool NeedShowBackground => true;
    public override bool CanBeClosedByBackground => false;

    private GameObject _itemPreviewContainer;
    private BaseItemPreviewer _itemPreviewer;
    private RewardWindowResult _callback;
    [SerializeField] private RewardButtonsSection _rewardButtonsSection;

    protected override void OnInit()
    {
        _rewardButtonsSection.SetCallback(OnRewardSectionResult);
        
        _itemPreviewContainer = Assets.Create<GameObject>("UI/ItemPreviews/ItemPreviewContainer");
        OnClose += AfterCloseAction;
    }

    public void SetCallback(RewardWindowResult callback)
    {
        _callback = callback;
    }

    public void SetItem(ConfLevelRewardItem rewardItem)
    {
        BaseItemPreviewer previewer = GetOrCreatePreviewerForItem(rewardItem);
        previewer.ChangeItem(rewardItem.item, false);
    }

    private BaseItemPreviewer GetOrCreatePreviewerForItem(ConfLevelRewardItem item)
    {
        if (_itemPreviewer != null)
            return _itemPreviewer;
        
        _itemPreviewer = FactorySectionItemPreview.CreateItemPreview(item.itemType);
        _itemPreviewer.gameObject.SetParent(_itemPreviewContainer.transform);
        return _itemPreviewer;
    }
    
    private void OnRewardSectionResult(EnumRewardResult result)
    {
        switch (result)
        {
            case EnumRewardResult.SKIP:
                OnPlayerSkipReward();
                break;
            case EnumRewardResult.FAIL:
                OnPlayerFailReward();
                break;
            case EnumRewardResult.NEED_REWARD:
                OnPlayerNeedReward();
                break;
            default:
                throw new ArgumentOutOfRangeException(nameof(result), result, null);
        }
    }

    private void OnPlayerSkipReward() => _callback?.Invoke(RewardStatus.PlayerRefused);
    private void OnPlayerFailReward() =>  _rewardButtonsSection.Begin();
    private void OnPlayerNeedReward() =>  _callback?.Invoke(RewardStatus.PlayerNeedsReward);
    
    private void AfterCloseAction(Window _)
    {
        Destroy(_itemPreviewContainer);
    }
}