Add image deletion and main selection

Caps/Views/CapImagesView.swift

@@ -9,6 +9,10 @@ struct CapImagesView: View {
     
     @Binding
     var isPresented: Bool
+
+    @State
+    private var selectedCap: CapImage?
+
     
     init(cap: Binding<Cap?>, database: Database, isPresented: Binding<Bool>) {
         self.database = database
@@ -50,21 +54,62 @@ struct CapImagesView: View {
                 ScrollView(.vertical) {
                     LazyVGrid(columns: [gridItem, gridItem, gridItem, gridItem]) {
                         ForEach(images) { item in
-                            CachedCapImage(
-                                item,
-                                check: { database.images.cachedImage(item) },
-                                fetch: { await database.images.image(item) },
-                                content: { $0.resizable() },
-                                placeholder: { ProgressView() })
-                            .frame(width: imageSize,
-                                   height: imageSize)
-                            .clipShape(Circle())
+                            ZStack(alignment: .topLeading) {
+                                CachedCapImage(
+                                    item,
+                                    check: { database.images.cachedImage(item) },
+                                    fetch: { await database.images.image(item) },
+                                    content: { $0.resizable() },
+                                    placeholder: { ProgressView() })
+                                .frame(width: imageSize,
+                                       height: imageSize)
+                                .clipShape(Circle())
+                                .onLongPressGesture { selectedCap = item }
+                                if item.version == cap?.mainImage {
+                                    Image(systemSymbol: .checkmarkCircleFill)
+                                        .foregroundColor(.green)
+                                        .background(Color.white)
+                                        .clipShape(Circle())
+                                }
+                            }
+
                         }
                     }
                 }
             }
             .padding(.horizontal)
         }
+        .actionSheet(item: $selectedCap) { item in
+            ActionSheet(title: Text("Image \(item.version)"), buttons: [
+                .default(Text("Set as main image")) { setMainImage(item) },
+                .destructive(Text("Delete image")) { delete(image: item) },
+                .cancel()
+            ])
+        }
+    }
+
+    private func delete(image: CapImage) {
+        Task {
+            guard let cap = await database.setMainImage(image.version, for: image.cap) else {
+                return
+            }
+            DispatchQueue.main.async {
+                self.cap = cap
+            }
+        }
+        selectedCap = nil
+    }
+
+    private func setMainImage(_ image: CapImage) {
+        Task {
+            guard let cap = await database.setMainImage(image.version, for: image.cap) else {
+                return
+            }
+            DispatchQueue.main.async {
+                self.cap = cap
+            }
+        }
+        self.selectedCap = nil
     }
 }