Rework storage structs, link preview

CHDataManagement/Main/MainView.swift

@@ -69,6 +69,12 @@ struct MainView: App {
     @State
     private var showInitialSetupSheet = false
 
+    @State
+    private var showLoadErrorSheet = false
+
+    @State
+    private var loadErrors: [String] = []
+
     @ViewBuilder
     var sidebar: some View {
         switch selectedTab {
@@ -202,14 +208,30 @@ struct MainView: App {
                     .environment(\.language, language)
                     .environmentObject(content)
             }
+            .sheet(isPresented: $showLoadErrorSheet) {
+                VStack {
+                    Text("Failed to load database")
+                        .font(.headline)
+                    List(loadErrors, id: \.self) { error in
+                        HStack {
+                            Text(error)
+                            Spacer()
+                        }
+                    }
+                    .frame(minHeight: 200)
+                    Button("Dismiss", action: { showLoadErrorSheet = false })
+                        .padding()
+                }
+                .padding()
+            }
         }
     }
 
     private func save() {
-        do {
-            try content.saveToDisk()
-        } catch {
-            print("Failed to save content: \(error.localizedDescription)")
+        guard content.saveToDisk() else {
+            print("Failed to save content")
+            #warning("Show error message")
+            return
         }
     }
 
@@ -218,10 +240,12 @@ struct MainView: App {
             showInitialSheet()
             return
         }
-        do {
-            try content.loadFromDisk()
-        } catch {
-            print("Failed to load content: \(error.localizedDescription)")
+        content.loadFromDisk { errors in
+            guard !errors.isEmpty else {
+                return
+            }
+            self.loadErrors = errors
+            self.showLoadErrorSheet = true
         }
     }