Conditionally hide favorites category.

Author: CalebRas

Shared/Supporting Files/Views/CategoriesView.swift

@@ -24,13 +24,17 @@ struct CategoriesView: View {
     /// A Boolean value indicating whether the navigation destination is showing.
     @State private var destinationIsPresented = false
 
-    /// The list of categories.
-    private let categories: [String] = {
-        var categories = ["All", "Favorites"]
-        let sampleCategories = Set(SamplesApp.samples.map(\.category))
-        categories.append(contentsOf: sampleCategories.sorted())
-        return categories
-    }()
+    /// The names of the favorite samples loaded from user defaults.
+    @AppStorage(.favoriteSampleNames) private var favoriteNamesString = ""
+    
+    /// The list of categories generated from the samples.
+    private let sampleCategories = Set(SamplesApp.samples.map(\.category)).sorted()
+    
+    /// The full list of categories to show.
+    private var categories: [String] {
+        let shouldShowFavorites = Array(jsonString: favoriteNamesString).isEmpty
+        return (shouldShowFavorites ? ["All"] : ["All", "Favorites"]) + sampleCategories
+    }
 
     var body: some View {
         ScrollView {
@@ -54,6 +58,7 @@ struct CategoriesView: View {
                             )
                     )
                 }
+                .animation(.default, value: categories)
             }
             .padding()
         }