//Lobby
//Simulate a lobby where people wait
 
#include <iostream>
#include <string>
 
using namespace std;
 
class Person
{
public:
    Person(const string& name = ""):m_Name(name), m_pNext(NULL){}
    Person(const Person& copyName);
    string GetName() const { return m_Name;}
    Person* GetNext() const { return m_pNext;}
    void SetNext(Person* next) { m_pNext = next;}
 
private:
    string m_Name;
    Person* m_pNext;    // pointer to next name in list
};
 
Person::Person(const Person& copyName)
{
    cout << "Copy constructor called...\n";
 
    m_pNext = new Person;
    *m_pNext = copyName.GetName();
}
 
class Lobby
{
    friend ostream& operator<<(ostream& os, const Lobby& aLobby);
 
public:
    Lobby():m_pHead(NULL){}
    ~Lobby() { Clear();}
 
    void AddName();
    void RemoveName();
    void Clear();
 
private:
    Person* m_pHead;
};
 
void Lobby::AddName()
{
    //create a new name node
    cout << "Please enter the name of the new person: ";
    string name;
    cin >> name;
    Person* pNewName = new Person(name);
 
    //if list is empty, make head of list this new name
    if (m_pHead == NULL)
    {
        m_pHead = pNewName;
    }
    //otherwise find the end of the list and add the name there
    else
    {
        Person* pIter = m_pHead;
 
        while (pIter->GetNext() != NULL)
        {
                pIter = pIter->GetNext();
        }
        pIter->SetNext(pNewName);
    }
}
 
void Lobby::RemoveName()
{
    if (m_pHead == NULL)
    {
        cout << "The lobby is empty. No one to remove.\n";
    }
    else
    {
        Person* pTemp = m_pHead;
        m_pHead = m_pHead->GetNext();
        delete pTemp;
    }
}
 
void Lobby::Clear()
{
    while (m_pHead != NULL)
    {
        RemoveName();
    }
}
 
ostream& operator<<(ostream& os, const Lobby& aLobby)
{
    Person* pIter = aLobby.m_pHead;
 
    os << "\nHere's who's in the lobby:\n";
 
    if (pIter == NULL)
    {
        os << "The lobby is empty.\n";
    }
    else
    {
        while (pIter != NULL)
        {
                os << pIter->GetName() <<  endl;
                pIter = pIter->GetNext();
        }
    }
    return os;
}
 
int main()
{
    Lobby myLobby;
    int choice;
 
    do
    {
        cout << myLobby;
        cout << "\nLOBBY\n";
        cout << "0 - Exit the program.\n";
        cout << "1 - Add a person to the lobby.\n";
        cout << "2 - Remove a person from the lobby.\n";
        cout << "3 - Clear the lobby.\n";
        cout << "4 - Copy the last name.\n";
        cout << endl << "Enter choice: ";
 
        cin >> choice;
 
        switch(choice)
        {
                case 0:
                cout << "Good-bye.\n";
                break;
                case 1:
                myLobby.AddName();
                break;
                case 2:
                myLobby.RemoveName();
                break;
                case 3:
                myLobby.Clear();
                break;
                //case 4:
                //Person.             //<-- how to write the link to getting
                //break;              //the copy???
                default:
                cout << "That was not a valid choice.\n";
 
        }
    } while (choice != 0);
 
    cout << "Press enter to exit!\n";
 
    cin.ignore(1, '\0');
 
    return 0;
}