Ability to Delete GIFs

GIFCollector MessagesExtension/Views/GIFCollectionViewController.swift

@@ -16,6 +16,7 @@ class GIFCollectionViewController: UIViewController {
         super.viewDidLoad()
         setupCollectionView()
         setupUI()
+        setupGestureRecognizers()
         loadGIFs()
     }
     
@@ -41,6 +42,11 @@ class GIFCollectionViewController: UIViewController {
         collectionView.dataSource = self
         collectionView.register(GIFCollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)
         collectionView.alwaysBounceVertical = true
+        
+        if #available(iOS 14.0, *) {
+            // Use collection view's built-in contextual menu support
+            // This is set up in collectionView(_:contextMenuConfigurationForItemAt:point:)
+        }
     }
     
     private func setupUI() {
@@ -114,6 +120,53 @@ class GIFCollectionViewController: UIViewController {
         navController.modalPresentationStyle = .formSheet
         present(navController, animated: true)
     }
+    
+    private func setupGestureRecognizers() {
+        // For iOS versions earlier than 14, we'll use a long press gesture recognizer
+        if #unavailable(iOS 14.0) {
+            let longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(handleLongPress(_:)))
+            collectionView.addGestureRecognizer(longPressGesture)
+        }
+    }
+    
+    @objc private func handleLongPress(_ gesture: UILongPressGestureRecognizer) {
+        if gesture.state == .began {
+            let point = gesture.location(in: collectionView)
+            
+            guard let indexPath = collectionView.indexPathForItem(at: point) else { return }
+            
+            // Show action sheet for pre-iOS 14 devices
+            showDeleteActionSheet(for: indexPath)
+        }
+    }
+    
+    private func showDeleteActionSheet(for indexPath: IndexPath) {
+        let gif = gifs[indexPath.item]
+        
+        let alertController = UIAlertController(
+            title: "GIF Options",
+            message: "What would you like to do with this GIF?",
+            preferredStyle: .actionSheet
+        )
+        
+        alertController.addAction(UIAlertAction(title: "Delete", style: .destructive) { [weak self] _ in
+            self?.deleteGIF(at: indexPath)
+        })
+        
+        alertController.addAction(UIAlertAction(title: "Cancel", style: .cancel))
+        
+        present(alertController, animated: true)
+    }
+    
+    private func deleteGIF(at indexPath: IndexPath) {
+        let gif = gifs[indexPath.item]
+        GIFStorageService.shared.deleteGIF(with: gif.id)
+        
+        // Remove from local array and update collection view
+        gifs.remove(at: indexPath.item)
+        collectionView.deleteItems(at: [indexPath])
+        updateEmptyState()
+    }
 }
 
 extension GIFCollectionViewController: UICollectionViewDelegate, UICollectionViewDataSource {
@@ -136,4 +189,23 @@ extension GIFCollectionViewController: UICollectionViewDelegate, UICollectionVie
         let gif = gifs[indexPath.item]
         onSelectGIF?(gif)
     }
+    
+    // MARK: - Context Menu Support (iOS 14+)
+    
+    @available(iOS 14.0, *)
+    func collectionView(_ collectionView: UICollectionView, contextMenuConfigurationForItemAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
+        let gif = gifs[indexPath.item]
+        
+        return UIContextMenuConfiguration(identifier: nil, previewProvider: nil) { _ in
+            let deleteAction = UIAction(
+                title: "Delete",
+                image: UIImage(systemName: "trash"),
+                attributes: .destructive
+            ) { [weak self] _ in
+                self?.deleteGIF(at: indexPath)
+            }
+            
+            return UIMenu(title: "", children: [deleteAction])
+        }
+    }
 }