Untitled

#include <iostream>
#include <fstream>
#include <string>
#include <filesystem>
#include <vector>

using namespace std;

void checkInbox();
int displayMenu();
void WriteToOutbox();

int main() {
    //TODO: Display a menu of options and prompt the user to choose from those available (including quitting)
    switch(displayMenu()) {
        case -1:
            cout << "Error selection out of bound" << endl;
            break;
        case 2:
            WriteToOutbox();
        default:
            cout << "default" << endl;
    }
    //Make sure to handle invalid input!

    return 0;
}

void checkInbox() {
    //TODO: create a vector of strings to store the filenames
    
    for (const auto& entry : std::filesystem::directory_iterator("inbox")) {
        if (entry.is_regular_file()) {  // Ensure it's a file, not a directory
            string filename = entry.path();
            //TODO: add each filename to a vector of strings
        }
    }

    //TODO: Present the user with a numbered list of their inbox emails
    //      include the filename and the subject
    
    //TODO: Ask the user for the number of the email to open, or 0 to return to the main menu
    //      if they open an email, display its full contents, then ask if they want to open another

}

int displayMenu() {
        int num = 0;
        cout << "Email Management System" << endl;
        cout << "1. Check Inbox" << endl;
        cout << "2. Write Email" << endl;
        cout << "3. Filter Spam" << endl;
        cout << "4. Filter Spam + Ham" << endl;
        cout << "5. Exit" << endl;
        cout << "Enter your choice: ";
        cin >> num;
        cin.ignore();
        if (num < 1 || num > 5) {
            
            return -1;
        } else {
            return num;
        }
}

void WriteToOutbox() {
    string recipient = "";
    cout << "Enter recipient email" << endl;
    cin >> recipient;
    cin.ignore();
    
    string subjectLine = "";
    cout << "Enter the subject line" << endl;
    cin >> subjectLine;
    cin.ignore();
    
    int emptyCounter = 0;
    string body = "";
    string line = "";
    cout << "Please enter email body. Enter 2 empty lines to finish:\n";
    while(true) {
        getline(cin,line);
        if(line.empty()) {
            emptyCounter++;
        } else {
            emptyCounter = 0;
        }
        if (emptyCounter == 2) {
            break;
        }
        body += line + '\n';
    }
    string filename = "";
    cout << "Enter the filename" << endl;
    cin >> filename;
    cin.ignore();
    
    ofstream EmailFile(filename);
    EmailFile << recipient << endl << subjectLine << endl << body << endl;
    EmailFile.close();
}