level2 task1

src/main.dart

@@ -1,5 +1,126 @@
-import 'core/note_app.dart';
+import 'dart:io';
 
 void main(List<String> args) {
-  NoteApp().run();
+  NoteApp noteApp = NoteApp();
+  noteApp.run();
 }
+
+class Note {
+  String? title;
+  String? content;
+
+  Note({this.title, this.content});
+}
+
+class NoteApp {
+  List<Note> notes = [];
+
+  void menu() {
+    print("Display menu:");
+    print("1- Create a new Note");
+    print("2- Edit an existing note");
+    print("3- Delete a note");
+    print("4- Searching for a note");
+    print("5- Exit");
+  }
+
+  void Edit() {
+    if (notes.isEmpty) {
+      print('Nothing to edit.');
+      return;
+    }
+    print('Enter the index of the note you want to edit:');
+    int? index = int.tryParse(stdin.readLineSync() ?? '');
+    if (index == null || index < 0 || index >= notes.length) {
+      print('Invalid index.');
+      return;
+    }
+    print('Enter new title:');
+    String? newTitle = stdin.readLineSync();
+    print('Enter new content:');
+    String? newContent = stdin.readLineSync();
+    notes[index].title = newTitle;
+    notes[index].content = newContent;
+    print('Note edited successfully.');
+  }
+
+  void Delete() {
+    if (notes.isEmpty) {
+      print('Nothing to delete.');
+      return;
+    }
+    print('Enter the index of the note you want to delete:');
+    int? index = int.tryParse(stdin.readLineSync() ?? '');
+    if (index == null || index < 0 || index >= notes.length) {
+      print('Invalid index.');
+      return;
+    }
+    notes.removeAt(index);
+    print('Note deleted successfully.');
+  }
+
+  void Search() {
+    if (notes.isEmpty) {
+      print('Nothing to search.');
+      return;
+    }
+    print('Enter the title of the note you want to search for:');
+    String? title = stdin.readLineSync();
+    for (int i = 0; i < notes.length; i++) {
+      if (notes[i].title == title) {
+        print('Note found.');
+        print('Title: ${notes[i].title}');
+        print('Content: ${notes[i].content}');
+        return;
+      }
+    }
+    print('Note not found.');
+  }
+
+  void Add() {
+    print('Enter title:');
+    String? title = stdin.readLineSync();
+    print('Enter content:');
+    String? content = stdin.readLineSync();
+    notes.add(Note(title: title, content: content));
+    print('Note added successfully.');
+    print('Title: ${notes[notes.length - 1].title}');
+  }
+
+  void run() {
+    menu();
+    while (true) {
+      stdout.write('Enter your choice: '); // Using stdout.write to prompt user input
+      String? input = stdin.readLineSync();
+      if (input != null && input.isNotEmpty) {
+        int? choice = int.tryParse(input);
+        if (choice != null) {
+          switch (choice) {
+            case 1:
+              Add();
+              break;
+            case 2:
+              Edit();
+              break;
+            case 3:
+              Delete();
+              break;
+            case 4:
+              Search();
+              break;
+            case 5:
+              exit(0);
+              break;
+            default:
+              print('Invalid choice.');
+          }
+        } else {
+          print('Please enter a valid number.');
+        }
+      } else {
+        print('Please enter a choice.');
+      }
+    }
+  }
+}
+