Description

The purpose of this challenge is to implement basic class functionality (setters, getters, constructor, destructor). This challenge simulates part of a messaging application.

Requirements

1. Create a class called Message. For the entirety of the assignment, be sure to NOT use cout or cin inside the class.
2. Add the following private data members

   int id;
   string sender;
   string text;
   bool read;

3. Add a private function, clear_message(). Use this function to clear all the private data members (blank the strings, set bool member(s) to false)
4. Add a default constructor that will call clear_message(). Then, set sender to “Unknown”
5. Add an overloaded constructor that will pass three parameters. These 3 parameters will be used to set the values of id, sender and text. Set read to false.
6. Add a destructor to append to a file called “message_log.txt”. In this file, append a line that looks like this “Destroyed message {id} from {sender}” The placeholders {id} and {sender} will be replaced by the actual values for the class. Then, call clear_message().
7. Add a setter function to set the text data member.
8. Add a setter function to set the sender data member.
9. Add a setter function to set the id data member. Only set the id member as long as it is greater than zero
10. Add a setter function called markRead(). This sets read to true. 
11. Add 3 getter functions, one for each of the data members id, sender and read.
12. Add the following getter function

    string summary() const
    {
      return "ID: " + to_string(id) + " | Sender: " + sender +
      " | Text: " + text + " | Status: " + (read ? "Read" : "Unread");
    }
    

13. Use the sample main() as given.

Sample main()

int main()
{
    // start the log file from scratch
    ofstream clearLog("message_log.txt");
    clearLog << "Message destruction log\n";
    clearLog.close();

    const int SIZE = 3;
    // inbox is an array of Message objects
    // each element of the array is created as an object
    // calling the Message overloaded constructor
    Message inbox[SIZE] = {
        Message(101, "Ava", "Are you coming?"),
        Message(102, "Leo", "Meeting at 2."),
        Message(103, "Mia", "Send the notes.")
    };

    cout << "A destructor log entry was written for the preview message." << endl;

    int choice, id;
    string newText;

    do
    {
        cout << "\n1. Display All\n2. Mark Read\n3. Edit Text\n4. Quit\nChoice: "; 
        cin >> choice;

        if (choice == 1)
        {
            for (int i = 0; i < SIZE; i++) 
            {
              cout << inbox[i].summary() << endl;
            }
        }
        else if (choice == 2)
        {
            cout << "Enter message ID: "; 
            cin >> id;
            for (int i = 0; i < SIZE; i++)
            {
                if (inbox[i].getId() == id) 
                {
                  inbox[i].markRead();
                }
            }
        }

        else if (choice == 3)
        {
            cout << "Enter message ID: "; 
            cin >> id;
            cin.ignore();
            cout << "Enter new text: ";
            getline(cin, newText);
            for (int i = 0; i < SIZE; i++)
            {
                if (inbox[i].getId() == id) 
                {
                  inbox[i].setText(newText);
                }
            }
        }

    } while (choice != 4);

    cout << "Check message_log.txt to see activity." << endl;
    return 0;
}

LEGEND
PROGRAM OUTPUT
USER INPUT
FROM INPUT

CATALOG ID: CPP-CHAL00081