feat: added list overview and detail view

MindDump/ContentView.swift

@@ -2,16 +2,16 @@ import SwiftUI
 
 struct ContentView: View {
     var body: some View {
-        VStack {
-            Image(systemName: "globe")
-                .imageScale(.large)
-                .foregroundStyle(.tint)
-            Text("Hello, world!")
+        NavigationStack {
+            ListsOverviewView()
+                .navigationDestination(for: UUID.self) { listID in
+                    ListDetailView(listID: listID)
+                }
         }
-        .padding()
     }
 }
 
 #Preview {
     ContentView()
+        .environment(ListStore())
 }

MindDump/MindDumpApp.swift

@@ -2,9 +2,12 @@ import SwiftUI
 
 @main
 struct MindDumpApp: App {
+    @State private var store = ListStore()
+
     var body: some Scene {
         WindowGroup {
             ContentView()
+                .environment(store)
         }
     }
 }

MindDump/Models/TodoItem.swift

@@ -0,0 +1,15 @@
+import Foundation
+
+struct TodoItem: Identifiable {
+    let id: UUID
+    var title: String
+    var isCompleted: Bool
+    let createdAt: Date
+
+    init(id: UUID = UUID(), title: String, isCompleted: Bool = false, createdAt: Date = Date()) {
+        self.id = id
+        self.title = title
+        self.isCompleted = isCompleted
+        self.createdAt = createdAt
+    }
+}

MindDump/Models/TodoList.swift

@@ -0,0 +1,15 @@
+import Foundation
+
+struct TodoList: Identifiable {
+    let id: UUID
+    var name: String
+    var items: [TodoItem]
+    let isInbox: Bool
+
+    init(id: UUID = UUID(), name: String, items: [TodoItem] = [], isInbox: Bool = false) {
+        self.id = id
+        self.name = name
+        self.items = items
+        self.isInbox = isInbox
+    }
+}

MindDump/ViewModels/ListStore.swift

@@ -0,0 +1,44 @@
+import Foundation
+import Observation
+
+@Observable
+class ListStore {
+    var lists: [TodoList]
+
+    init() {
+        self.lists = [TodoList(name: "Inbox", isInbox: true)]
+    }
+
+    func addList(name: String) {
+        let list = TodoList(name: name)
+        lists.append(list)
+    }
+
+    func deleteList(_ list: TodoList) {
+        guard !list.isInbox else { return }
+        lists.removeAll { $0.id == list.id }
+    }
+
+    func addItem(to listID: UUID, title: String) {
+        guard let index = lists.firstIndex(where: { $0.id == listID }) else { return }
+        let item = TodoItem(title: title)
+        lists[index].items.append(item)
+    }
+
+    func deleteItem(_ itemID: UUID, from listID: UUID) {
+        guard let listIndex = lists.firstIndex(where: { $0.id == listID }) else { return }
+        lists[listIndex].items.removeAll { $0.id == itemID }
+    }
+
+    func updateItem(_ itemID: UUID, in listID: UUID, title: String) {
+        guard let listIndex = lists.firstIndex(where: { $0.id == listID }),
+              let itemIndex = lists[listIndex].items.firstIndex(where: { $0.id == itemID }) else { return }
+        lists[listIndex].items[itemIndex].title = title
+    }
+
+    func toggleItemCompleted(_ itemID: UUID, in listID: UUID) {
+        guard let listIndex = lists.firstIndex(where: { $0.id == listID }),
+              let itemIndex = lists[listIndex].items.firstIndex(where: { $0.id == itemID }) else { return }
+        lists[listIndex].items[itemIndex].isCompleted.toggle()
+    }
+}

MindDump/Views/ListDetailView.swift

@@ -0,0 +1,52 @@
+import SwiftUI
+
+struct ListDetailView: View {
+    @Environment(ListStore.self) private var store
+    let listID: UUID
+    @State private var editorItem: TodoItem?
+    @State private var showingEditor = false
+
+    private var todoList: TodoList? {
+        store.lists.first { $0.id == listID }
+    }
+
+    var body: some View {
+        Group {
+            if let todoList {
+                if todoList.items.isEmpty {
+                    ContentUnavailableView("Keine Einträge", systemImage: "tray")
+                } else {
+                    List {
+                        ForEach(todoList.items) { item in
+                            TodoRowView(item: item, onToggle: {
+                                store.toggleItemCompleted(item.id, in: listID)
+                            }, onTap: {
+                                editorItem = item
+                                showingEditor = true
+                            })
+                        }
+                        .onDelete { offsets in
+                            for index in offsets {
+                                store.deleteItem(todoList.items[index].id, from: listID)
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        .navigationTitle(todoList?.name ?? "")
+        .toolbar {
+            ToolbarItem(placement: .primaryAction) {
+                Button(action: {
+                    editorItem = nil
+                    showingEditor = true
+                }) {
+                    Image(systemName: "plus")
+                }
+            }
+        }
+        .sheet(isPresented: $showingEditor) {
+            TodoEditorView(listID: listID, item: editorItem)
+        }
+    }
+}

MindDump/Views/ListsOverviewView.swift

@@ -0,0 +1,50 @@
+import SwiftUI
+
+struct ListsOverviewView: View {
+    @Environment(ListStore.self) private var store
+    @State private var showingAddList = false
+    @State private var newListName = ""
+
+    var body: some View {
+        List {
+            ForEach(store.lists) { list in
+                NavigationLink(value: list.id) {
+                    HStack {
+                        Text(list.name)
+                        Spacer()
+                        Text("\(list.items.count)")
+                            .foregroundStyle(.secondary)
+                    }
+                }
+            }
+            .onDelete(perform: deleteLists)
+        }
+        .navigationTitle("MindDump")
+        .toolbar {
+            ToolbarItem(placement: .primaryAction) {
+                Button(action: { showingAddList = true }) {
+                    Image(systemName: "plus")
+                }
+            }
+        }
+        .alert("Neue Liste", isPresented: $showingAddList) {
+            TextField("Name", text: $newListName)
+            Button("Abbrechen", role: .cancel) {
+                newListName = ""
+            }
+            Button("Erstellen") {
+                let name = newListName.trimmingCharacters(in: .whitespaces)
+                if !name.isEmpty {
+                    store.addList(name: name)
+                }
+                newListName = ""
+            }
+        }
+    }
+
+    private func deleteLists(at offsets: IndexSet) {
+        for index in offsets {
+            store.deleteList(store.lists[index])
+        }
+    }
+}

MindDump/Views/TodoEditorView.swift

@@ -0,0 +1,52 @@
+import SwiftUI
+
+struct TodoEditorView: View {
+    @Environment(ListStore.self) private var store
+    @Environment(\.dismiss) private var dismiss
+
+    let listID: UUID
+    var item: TodoItem?
+
+    @State private var title: String = ""
+    @FocusState private var titleFocused: Bool
+
+    private var isEditing: Bool { item != nil }
+
+    var body: some View {
+        NavigationStack {
+            Form {
+                TextField("Titel", text: $title)
+                    .focused($titleFocused)
+            }
+            .navigationTitle(isEditing ? "Bearbeiten" : "Neuer Eintrag")
+            .navigationBarTitleDisplayMode(.inline)
+            .toolbar {
+                ToolbarItem(placement: .cancellationAction) {
+                    Button("Abbrechen") { dismiss() }
+                }
+                ToolbarItem(placement: .confirmationAction) {
+                    Button("Fertig") { save() }
+                        .disabled(title.trimmingCharacters(in: .whitespaces).isEmpty)
+                }
+            }
+            .onAppear {
+                if let item {
+                    title = item.title
+                }
+                titleFocused = true
+            }
+        }
+    }
+
+    private func save() {
+        let trimmed = title.trimmingCharacters(in: .whitespaces)
+        guard !trimmed.isEmpty else { return }
+
+        if let item {
+            store.updateItem(item.id, in: listID, title: trimmed)
+        } else {
+            store.addItem(to: listID, title: trimmed)
+        }
+        dismiss()
+    }
+}

MindDump/Views/TodoRowView.swift

@@ -0,0 +1,27 @@
+import SwiftUI
+
+struct TodoRowView: View {
+    let item: TodoItem
+    let onToggle: () -> Void
+    var onTap: (() -> Void)?
+
+    var body: some View {
+        HStack {
+            Button(action: onToggle) {
+                Image(systemName: item.isCompleted ? "checkmark.circle.fill" : "circle")
+                    .foregroundStyle(item.isCompleted ? .green : .secondary)
+                    .imageScale(.large)
+            }
+            .buttonStyle(.borderless)
+
+            Button(action: { onTap?() }) {
+                Text(item.title)
+                    .strikethrough(item.isCompleted)
+                    .foregroundStyle(item.isCompleted ? .secondary : .primary)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                    .contentShape(Rectangle())
+            }
+            .buttonStyle(.plain)
+        }
+    }
+}