Joory Altuwaijri

src/task.dart

@@ -0,0 +1,23 @@
+
+
+
+class Task {
+
+    late int ID;
+    late String Title;
+    late String Description;
+    late bool isCompleted;
+
+    Task(this.ID, this.Title, this.Description, this.isCompleted);
+
+    Task.create() {
+        ID = 0;
+        Title = '';
+        Description = '';
+        isCompleted = false;
+    }
+}
+
+
+
+

src/task_list.dart

@@ -0,0 +1,183 @@
+
+import'dart:io';
+import 'task.dart';
+
+
+List <Task> All_tasks = [] ;
+
+
+void add(){
+
+  late Task new_task =Task.create();
+
+  new_task.ID = All_tasks.length;
+
+  stdout.write('task title: ');
+  new_task.Title = stdin.readLineSync()!;
+
+  stdout.write('task description: ');
+  new_task.Description = stdin.readLineSync()!;
+
+  All_tasks.add(new_task);
+
+  print('The task has been added successfully!');
+  main();
+
+}
+
+void remove(){
+
+
+  stdout.write('Please enter the ID of the task you want to remove: ');
+  int task_id = int.parse(stdin.readLineSync()!);
+
+  All_tasks.remove(All_tasks[task_id]);
+
+  print('The task has been removed successfully!');
+
+  main();
+
+}
+
+void update(){
+
+
+  stdout.write('Please enter the ID of the task you want to update: ');
+  int task_id = int.parse(stdin.readLineSync()!);
+
+  Task the_task = All_tasks[task_id];
+
+  stdout.write('What do you want to update (title, description, completed)?');
+  String? field = stdin.readLineSync()!;
+
+  field.toLowerCase();
+
+  if (field == 'title')
+  {
+    stdout.write('Enter new title please: ');
+    the_task.Title = stdin.readLineSync()!;
+
+  }
+  else if (field == 'description')
+  {
+    stdout.write('Enter new description please: ');
+    the_task.Description = stdin.readLineSync()!;
+  }
+  else if (field == 'competed') 
+  {
+    the_task.isCompleted = !(the_task.isCompleted);
+  }
+  else
+  {
+     print('Please select a valid field');
+  }
+
+    print('The task has been updated successfully!');
+      main();
+
+
+}
+
+void printRow(List<String> row, List<int> columnWidths) {
+
+  for (int i = 0; i < row.length; i++) {
+    String cell = row[i];
+    String padding = ' ' * (columnWidths[i] - cell.length);
+    stdout.write('| $cell$padding ');
+  }
+  stdout.write('|\n');
+
+}
+
+void printSubheadings(List<int> columnWidths) {
+
+  stdout.write('+' + ('-' * (columnWidths.reduce((a, b) => a + b) + 3 * columnWidths.length - 1)) + '+');
+  stdout.write('\n');
+}
+
+void view(){
+
+ try {
+
+  List<List<String>> tasks = [];
+  List<String> sub_headings = ['ID', 'Title', 'Description', 'Completed' ];
+  tasks.add(sub_headings);
+
+  for (var i = 0; i < All_tasks.length; i++){
+
+    Task task = All_tasks[i];
+    List<String> single_task = [task.ID.toString() , task.Title.toString() ,task.Description.toString() , task.isCompleted.toString()];
+    tasks.add(single_task);
+  }
+
+  List<int> columnWidths = List.generate(tasks[0].length, (index) => 0);
+
+
+  for (var row in tasks) {
+    for (int i = 0; i < row.length; i++) {
+      if (row[i].length > columnWidths[i]) {
+        columnWidths[i] = row[i].length;
+
+      }
+    }
+  }
+
+  // Print the table headings
+  printRow(tasks[0], columnWidths);
+
+  // Print the subheadings
+  printSubheadings(columnWidths);
+
+  // Print the table rows
+  for (int i = 1; i < tasks.length; i++) {
+    printRow(tasks[i], columnWidths);
+  }
+
+  main();
+
+ }catch(e)
+ {
+   print('You dont have any tasks yet!');
+   main();
+ }
+
+}
+
+
+
+void main(){
+
+
+
+  print('Welcome to the task tracker app!');
+  stdout.write('Choose action: (Add) || (Remove) || (Update) || (View) || (Stop)\n');
+  String? action = stdin.readLineSync()!;
+
+  action.toLowerCase();
+
+  if (action == 'add')
+  {
+    add();
+  }
+  else if (action == 'Remove')
+  {
+    remove();
+  }
+  else if (action == 'update')
+  {
+    update();
+  }
+  else if (action == 'view')
+  {
+    view();
+  }
+  else if (action == 'stop')
+  {
+    return ; 
+  }
+  else
+  {
+    print('Please select a valid action');
+    main();
+  }
+}