init, finished

GIFCollector MessagesExtension/GIFCollectionViewCell.swift

@@ -0,0 +1,107 @@
+import UIKit
+
+class GIFCollectionViewCell: UICollectionViewCell {
+
+  private let gifPlayerView: GIFPlayerView = {
+    let player = GIFPlayerView()
+    player.layer.cornerRadius = 8
+    player.clipsToBounds = true
+    return player
+  }()
+
+  private let loadingIndicator: UIActivityIndicatorView = {
+    let indicator = UIActivityIndicatorView(style: .medium)
+    indicator.hidesWhenStopped = true
+    return indicator
+  }()
+
+  private let placeholderLabel: UILabel = {
+    let label = UILabel()
+    label.text = "GIF"
+    label.textAlignment = .center
+    label.font = .systemFont(ofSize: 12, weight: .medium)
+    label.textColor = .systemGray
+    return label
+  }()
+
+  private var currentTask: URLSessionDataTask?
+
+  override init(frame: CGRect) {
+    super.init(frame: frame)
+    setupUI()
+  }
+
+  required init?(coder: NSCoder) {
+    super.init(coder: coder)
+    setupUI()
+  }
+  
+  override func prepareForReuse() {
+    super.prepareForReuse()
+    currentTask?.cancel()
+    currentTask = nil
+    gifPlayerView.stopAnimating()
+    placeholderLabel.isHidden = false
+    loadingIndicator.stopAnimating()
+  }
+
+  private func setupUI() {
+    contentView.addSubview(gifPlayerView)
+    contentView.addSubview(loadingIndicator)
+    contentView.addSubview(placeholderLabel)
+
+    gifPlayerView.translatesAutoresizingMaskIntoConstraints = false
+    loadingIndicator.translatesAutoresizingMaskIntoConstraints = false
+    placeholderLabel.translatesAutoresizingMaskIntoConstraints = false
+
+    NSLayoutConstraint.activate([
+      gifPlayerView.topAnchor.constraint(equalTo: contentView.topAnchor),
+      gifPlayerView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
+      gifPlayerView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
+      gifPlayerView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor),
+
+      loadingIndicator.centerXAnchor.constraint(equalTo: contentView.centerXAnchor),
+      loadingIndicator.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
+
+      placeholderLabel.centerXAnchor.constraint(equalTo: contentView.centerXAnchor),
+      placeholderLabel.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
+    ])
+
+    contentView.layer.cornerRadius = 8
+    contentView.layer.borderWidth = 1
+    contentView.layer.borderColor = UIColor.systemGray4.cgColor
+  }
+
+  func configure(with urlString: String) {
+    // Cancel any existing task
+    currentTask?.cancel()
+
+    // Reset UI
+    gifPlayerView.stopAnimating()
+    placeholderLabel.isHidden = false
+    loadingIndicator.startAnimating()
+
+    guard let url = URL(string: urlString) else {
+      loadingIndicator.stopAnimating()
+      return
+    }
+
+    // Load the GIF
+    currentTask = URLSession.shared.dataTask(with: url) { [weak self] data, _, error in
+      DispatchQueue.main.async {
+        guard let self = self else { return }
+        self.loadingIndicator.stopAnimating()
+        
+        if let data = data, error == nil {
+          self.gifPlayerView.loadGIF(from: data)
+          self.gifPlayerView.startAnimating()
+          self.placeholderLabel.isHidden = true
+        } else {
+          self.placeholderLabel.isHidden = false
+        }
+      }
+    }
+
+    currentTask?.resume()
+  }
+}