//
//  CollectionViewController.swift
//  Tusker
//
//  Created by Shadowfacts on 11/29/22.
//  Copyright © 2022 Shadowfacts. All rights reserved.
//

import UIKit

@MainActor
protocol CollectionViewController: UIViewController {
    var collectionView: UICollectionView! { get }
}

extension CollectionViewController {
    func clearSelectionOnAppear(animated: Bool) {
        guard let indexPath = collectionView.indexPathsForSelectedItems?.first else {
            return
        }
        if let transitionCoordinator {
            transitionCoordinator.animate { context in
                self.collectionView.deselectItem(at: indexPath, animated: true)
            } completion: { context in
                if context.isCancelled {
                    self.collectionView.selectItem(at: indexPath, animated: false, scrollPosition: [] /* UICollectionViewScrollPositionNone */)
                }
            }
            
        } else {
            collectionView.deselectItem(at: indexPath, animated: animated)
        }
    }
}