SmartTaskManagerCLI.java

import java.util.Scanner;

public class SmartTaskManagerCLI {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        TaskManager taskManager = TaskManager.getInstance();

        while(true){
            System.out.println("---Smart Task Manager ---");
            System.out.println("1. Add Task");
            System.out.println("2. View All Tasks");
            System.out.println("3. Mark Task as Done");
            System.out.println("4. Delete Task");
            System.out.println("5. View Task By Tag");
            System.out.println("6. Exit from App");
            System.out.print("Choose an option: ");

            int choice = input.nextInt();
            input.nextLine();
            switch(choice){
                case 1:
                    System.out.print("Enter title: ");
                    String title = input.nextLine();
                    System.out.print("Enter description: ");
                    String desc = input.nextLine();
                    System.out.print("Enter tag name for your task: ");
                    String tag = input.nextLine();
                    input.nextLine();
                    Task task = new Task(title, desc, tag);
                    taskManager.addTask(task);
                    break;
                case 2:
                    System.out.println("\n");
                    taskManager.viewAllTasks();
                    break;
                case 3:
                    System.out.print("Enter title to mark as done: ");
                    String doneTitle = input.nextLine();
                    taskManager.markAsDone(doneTitle);
                    break;
                case 4:
                    System.out.print("Enter title to delete task: ");
                    String deleteTitle = input.nextLine();
                    taskManager.deleteTask(deleteTitle);
                    break;
                case 5:
                    System.out.print("Enter tag name to view tasks: ");
                    String tagname = input.nextLine();
                    taskManager.viewTasksByTag(tagname);
                    break;
                case 6:
                    System.out.println("Thank you for using Smart Task Manager!");
                    System.exit(0);
                default:
                    System.out.println("Invalid choice. Try again.\n");
            }
        }
    }
}