Use ImageManager of SDWebImageSwiftUI

Shared/Videos/ThumbnailView.swift

@@ -0,0 +1,37 @@
+import SDWebImageSwiftUI
+import SwiftUI
+
+struct ThumbnailView: View {
+    var url: URL?
+
+    @ObservedObject private var imageManager = ImageManager()
+    private var thumbnails = ThumbnailsModel.shared
+
+    init(url: URL? = nil) {
+        self.url = url
+    }
+
+    var body: some View {
+        Group {
+            if imageManager.image != nil {
+                #if os(macOS)
+                    Image(nsImage: imageManager.image!)
+                        .resizable()
+                #else
+                    Image(uiImage: imageManager.image!)
+                        .resizable()
+                #endif
+            } else {
+                Rectangle().fill(Color("PlaceholderColor"))
+                    .onAppear {
+                        self.imageManager.setOnFailure { _ in
+                            guard let url else { return }
+                            self.thumbnails.insertUnloadable(url)
+                        }
+                        self.imageManager.load(url: url)
+                    }
+                    .onDisappear { self.imageManager.cancel() }
+            }
+        }
+    }
+}