wip

Workouts/Cepo/EntityListView.swift

@@ -0,0 +1,96 @@
+import SwiftUI
+import SwiftData
+
+struct EntityListView<T: EditableEntity>: View {
+    @Environment(\.modelContext) private var modelContext
+
+    @Query var items: [T]
+    
+    @State private var showingAddSheet = false
+    @State private var itemToEdit: T? = nil
+    @State private var itemToDelete: T? = nil
+    
+    private var sortDescriptors: [SortDescriptor<T>]
+    
+    init(sort: [SortDescriptor<T>] = [], searchString: String = "") {
+        self.sortDescriptors = sort
+        _items = Query(filter: #Predicate { item in
+            if searchString.isEmpty {
+                return true
+            } else {
+                return item.name.localizedStandardContains(searchString)
+            }
+        }, sort: sort)
+    }
+    
+    @State private var isInsideNavigationStack: Bool = false
+
+    var body: some View {
+        let content = Form {
+            List {
+                ForEach(items) { item in
+                    ListItem(title: item.name, count: item.count)
+                        .swipeActions(edge: .trailing, allowsFullSwipe: false) {
+                            Button(role: .destructive) {
+                                itemToDelete = item
+                            } label: {
+                                Label("Delete", systemImage: "trash")
+                            }
+                            Button {
+                                itemToEdit = item
+                            } label: {
+                                Label("Edit", systemImage: "pencil")
+                            }
+                            .tint(.indigo)
+                        }
+                }
+            }
+        }
+        .navigationTitle(T.navigationTitle)
+        .toolbar {
+            ToolbarItem(placement: .navigationBarTrailing) {
+                Button(action: { showingAddSheet.toggle() }) {
+                    Image(systemName: "plus")
+                }
+            }
+        }
+        .sheet(isPresented: $showingAddSheet) {
+            T.formView(for: T.createNew())
+        }
+        .sheet(item: $itemToEdit) { item in
+            T.formView(for: item)
+        }
+        .confirmationDialog(
+            "Delete?",
+            isPresented: Binding<Bool>(
+                get: { itemToDelete != nil },
+                set: { if !$0 { itemToDelete = nil } }
+            ),
+            titleVisibility: .visible
+        ) {
+            Button("Delete", role: .destructive) {
+                if let item = itemToDelete {
+                    modelContext.delete(item)
+                    try? modelContext.save()
+                    itemToDelete = nil
+                }
+            }
+            Button("Cancel", role: .cancel) {
+                itemToDelete = nil
+            }
+        } message: {
+            Text("Are you sure you want to delete \(itemToDelete?.name ?? "this item")?")
+        }
+        .background(
+            NavigationStackChecker(isInside: $isInsideNavigationStack)
+        )
+
+        if isInsideNavigationStack {
+            content
+        } else {
+            NavigationStack {
+                content
+            }
+        }
+    }
+}