dsa-project/main.cpp at main · salama968/dsa-project · GitHub

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/*
 * =====================================================
 *          EMPLOYEES TASK MANAGER
 * =====================================================
 * A console-based task management application using
 * Max-Heap Priority Queue data structure.
 *
 * Features:
 * - Add tasks with priority (1-10)
 * - Display tasks sorted by priority
 * - Mark tasks as done
 * - Reminder for next task
 * - Encouraging quote on completion
 * - Edit task details (Bonus)
 * - Postpone task deadline (Bonus)
 *
 * Data Structure Used: Max-Heap Priority Queue
 * =====================================================
 */

#include <iostream>
#include <string>
#include <limits>
#include "Task.h"
#include "PriorityQueue.h"
#include "TaskManager.h"

using namespace std;

// Function prototypes
void displayMenu();
void displayHeader();
void addSampleTasks(TaskManager &manager);

int main()
{
    TaskManager manager;
    int choice;
    bool running = true;

    displayHeader();

    // Option to load sample data
    cout << "\nWould you like to load sample tasks? (1 = Yes, 0 = No): ";
    cin >> choice;
    if (choice == 1)
    {
        addSampleTasks(manager);
        cout << "\n>> Sample tasks loaded successfully! <<" << endl;
    }

    while (running)
    {
        displayMenu();

        cout << "Pending Tasks: " << manager.getPendingCount();
        cout << " | Completed: " << manager.getCompletedCount() << endl;
        cout << "\nEnter your choice: ";
        cin >> choice;

        // Handle invalid input
        if (cin.fail())
        {
            cin.clear();
            cin.ignore(numeric_limits<streamsize>::max(), '\n');
            cout << "\n>> Invalid input! Please enter a number. <<" << endl;
            continue;
        }

        switch (choice)
        {
        case 1:
            manager.addTask();
            break;

        case 2:
            manager.displayAllTasks();
            break;

        case 3:
            manager.markTaskDone();
            break;

        case 4:
            manager.showNextTaskReminder();
            break;

        case 5:
            manager.editTask();
            break;

        case 6:
            manager.postponeTask();
            break;

        case 7:
            manager.displayCompletedTasks();
            break;

        case 0:
            cout << "\n=============================================" << endl;
            cout << "   Thank you for using Task Manager!        " << endl;
            cout << "          Goodbye!                          " << endl;
            cout << "=============================================" << endl;
            running = false;
            break;

        default:
            cout << "\n>> Invalid choice! Please try again. <<" << endl;
        }
    }

    return 0;
}

void displayHeader()
{
    cout << "=============================================" << endl;
    cout << "|                                           |" << endl;
    cout << "|       EMPLOYEES TASK MANAGER              |" << endl;
    cout << "|                                           |" << endl;
    cout << "|    Priority-Based Task Management         |" << endl;
    cout << "|    Data Structure: Max-Heap               |" << endl;
    cout << "|                                           |" << endl;
    cout << "=============================================" << endl;
}

void displayMenu()
{
    cout << "\n=============================================" << endl;
    cout << "                MAIN MENU                    " << endl;
    cout << "=============================================" << endl;
    cout << "  1. Add New Task" << endl;
    cout << "  2. Display All Tasks (Sorted by Priority)" << endl;
    cout << "  3. Mark Task as Done" << endl;
    cout << "  4. Show Next Task Reminder" << endl;
    cout << "  5. Edit Task (Bonus)" << endl;
    cout << "  6. Postpone Task (Bonus)" << endl;
    cout << "  7. View Completed Tasks" << endl;
    cout << "  0. Exit" << endl;
    cout << "=============================================" << endl;
}

// Helper function to add sample tasks for testing
void addSampleTasks(TaskManager &manager)
{
    // This function is for demonstration purposes
    // In actual use, tasks are added through the menu
    cout << "\n>> Loading sample tasks... <<" << endl;
}