Download function for all recipes or recipes in a certain category

Nextcloud Cookbook iOS Client/Views/CategoryDetailView.swift

@@ -13,13 +13,14 @@ import SwiftUI
 struct RecipeBookView: View {
     @State var categoryName: String
     @ObservedObject var viewModel: MainViewModel
+        
     var body: some View {
         ScrollView(showsIndicators: false) {
             LazyVStack {
                 if let recipes = viewModel.recipes[categoryName] {
                     ForEach(recipes, id: \.recipe_id) { recipe in
                         NavigationLink(destination: RecipeDetailView(viewModel: viewModel, recipe: recipe)) {
-                            RecipeCardView(viewModel: viewModel, recipe: recipe)
+                            RecipeCardView(viewModel: viewModel, recipe: recipe, isDownloaded: viewModel.recipeDetailExists(recipeId: recipe.recipe_id))
                         }
                         .buttonStyle(.plain)
                     }
@@ -27,6 +28,22 @@ struct RecipeBookView: View {
             }
         }
         .navigationTitle(categoryName)
+        .toolbar {
+            Menu {
+                Button {
+                    print("Downloading all recipes in category \(categoryName) ...")
+                    downloadRecipes()
+                } label: {
+                    HStack {
+                        Text("Download recipes")
+                        Image(systemName: "icloud.and.arrow.down")
+                    }
+                }
+                
+            } label: {
+                Image(systemName: "ellipsis.circle")
+            }
+        }
         .task {
             await viewModel.loadRecipeList(categoryName: categoryName)
         }
@@ -34,4 +51,18 @@ struct RecipeBookView: View {
             await viewModel.loadRecipeList(categoryName: categoryName, needsUpdate: true)
         }
     }
+    
+    func downloadRecipes() {
+        if let recipes = viewModel.recipes[categoryName] {
+            let dispatchQueue = DispatchQueue(label: "RecipeDownload", qos: .background)
+            dispatchQueue.async {
+                for recipe in recipes {
+                    Task {
+                        let _ = await viewModel.loadRecipeDetail(recipeId: recipe.recipe_id)
+                        let _ = await viewModel.loadImage(recipeId: recipe.recipe_id, full: true)
+                    }
+                }
+            }
+        }
+    }
 }