task

src/core/note_app.dart

@@ -1,6 +1,78 @@
-class NoteApp {
-  // TODO: Complete the run function
-  void run() {
-    print('Hello, world!');
+import 'dart:io';
+import '../models/note_model.dart';
+ class NoteApp {
+  List<NoteModel> notes = [];
+
+  void Menu() {
+    print("----------MENU----------");
+    print("1-Creat a note");
+    print("2-Edit a note");
+    print("3-Delete a note");
+    print("4-Search for note");
+    print("5-Exit");
+    print("------------------------");
+  }
+
+  void creat_note() {
+    print("Enter the title:");
+    String? title = stdin.readLineSync();
+    print("Enter the note context:");
+    String? context = stdin.readLineSync();
+    notes.add(NoteModel(title: title, context: context));
+    print("note added.");
+    print('Title: ${notes[notes.length - 1].title}');
+  }
+
+  void edit_note() {
+    if (notes.isEmpty) {
+      print("there is nothing to edit.");
+      return;
+    }
+    print("enter the index of the note you want to edit:");
+    int? index = int.tryParse(stdin.readLineSync() ?? '');
+    if (index == null || notes.length <= index || index < 0) {
+      print("this index is invalid.");
+      return;
+    }
+    print("Enter the new title: ");
+    String? new_title = stdin.readLineSync();
+    notes[index].title = new_title;
+    print("Enter the new note context: ");
+    String? new_context = stdin.readLineSync();
+    notes[index].context = new_context;
+    print("your note is edited.");
+  }
+
+  void delete_note() {
+    if (notes.isEmpty) {
+      print("there is nothing to delete.");
+      return;
+    }
+    print("enter the index of the note you want to delete:");
+    int? index = int.tryParse(stdin.readLineSync() ?? '');
+    if (index == null || notes.length <= index || index < 0) {
+      print("this index is invalid.");
+      return;
+    }
+    notes.remove(index);
+    print("your note is deleted.");
+  }
+
+  void search_note() {
+    if (notes.isEmpty) {
+      print("there is nothing to edit.");
+      return;
+    }
+    print("Enter the title for the note that you want to search for: ");
+    String? title = stdin.readLineSync();
+    for (int i = 0; i < notes.length; i++) {
+      if (notes[i].title == title) {
+        print("your note is found.");
+        print('Title: ${notes[i].title}');
+        print('note context: ${notes[i].context}');
+        return;
+      }
+    }
+    print("your note isnt found.");
   }
 }

src/main.dart

@@ -1,5 +1,47 @@
+import 'dart:io';
 import 'core/note_app.dart';
 
-void main(List<String> args) {
-  NoteApp().run();
-}
+void main() {
+  print("----------MENU----------");
+    print("1-Creat a note");
+    print("2-Edit a note");
+    print("3-Delete a note");
+    print("4-Search for note");
+    print("5-Exit");
+    print("------------------------");
+     while (true) {
+      stdout.write('Enter your choice: '); 
+      String? input = stdin.readLineSync();
+      if (input != null && input.isNotEmpty) {
+        int? choice = int.tryParse(input);
+        if (choice != null) {
+          switch (choice) {
+            case 1:
+              creat_note();
+              break;
+            case 2:
+              edit_note();
+              break;
+            case 3:
+              delete_note();
+              break;
+            case 4:
+              search_note();
+              break;
+            case 5:
+              exit(0);
+              break;
+            default:
+              print('Invalid choice.');
+          }
+        } else {
+          print('Please enter a valid number.');
+        }
+      } else {
+        print('Please enter a choice.');
+      }
+    }
+  }
+
+
+

src/models/note_model.dart

@@ -1,2 +1,6 @@
-//TODO: Define a note model class
-class NoteModel {}
+class NoteModel {
+  String? title;
+  String? context;
+  NoteModel({this.title, this.context});
+
+}