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#include <iostream>
#include <vector>
#include <set>
#include <map>
using namespace std;

class Tourist
{
    protected: string name; int id, contactNo, noOfPeople;
    public: Tourist(); Tourist(string, int, int, int); void showTourist(); int getID();

    bool operator < (const Tourist &TA) const
    {
        return (this->id < TA.id);
    }

    bool operator == (const Tourist &TouristA) const
    {
        if (this -> name == TouristA.name && this->id == TouristA.id)
            return true;
        else
            return false;
    }
};

Tourist :: Tourist()
{
    name = ""; id = 0; contactNo = 0; noOfPeople = 0;
}

Tourist :: Tourist (string a, int b, int c, int d)
{
    name = a; id = b; contactNo = c; noOfPeople = d;
}

int Tourist :: getID ()
{
    return id;
}

void Tourist :: showTourist()
{
    cout << "Name: " << name << endl;
    cout << "ID: " << id << endl;
    cout << "Contact No: " << endl;
    cout << "No of People: " << noOfPeople << endl;
}

class TourPackage
{
    friend ostream& operator << (ostream &, const TourPackage&);

    private: int pid; string pName; double price; string desc, startingDate; int duration;
    public: TourPackage(); TourPackage(int, string, double, string, string, int);

    bool operator < (const TourPackage &TPA) const
    {
        return (this->pid < TPA.pid);
    }

    bool operator == (const TourPackage &TourPackageA) const
    {
        return (this->pid == TourPackageA.pid);
    }
};

ostream& operator << (ostream &out, const TourPackage & tourP)
{
    out << "Package ID: " << tourP.pid << "\nPackage Name: " << tourP.pName << "\nPackage Price: " << tourP.price <<
    "\nPackage Desc: " << tourP.desc << "\nStarting-Date: " << tourP.startingDate << "\nDuration: " << tourP.duration << endl;

    return out;
}

TourPackage :: TourPackage ()
{
    pid = 0; pName = ""; price = 0; desc = ""; startingDate = ""; duration = 0;
}

TourPackage :: TourPackage (int a, string b, double c, string d, string e, int f)
{
    pid = a; pName = b; price = c; desc = d; startingDate = e; duration = f;
}

template <class T>
T getNthElementFromSet(set<T> &searchSet, int SelectedIndex)
{
    T a;
    int index(0);

    for (T elem: searchSet)
    {
        index++;
        if(index == SelectedIndex)
        {
            a=elem;
            break;
        }
    }

    return a;
}

int main ()
{
    int option1, option2, trNo;
    bool check1;

    vector <Tourist> myTourist;
    string name; int id, contactNo, noOfPeople;

    set <TourPackage> myTourPackage;
    int pid; string pName; double price; string desc, startingDate; int duration;

    multimap <TourPackage, Tourist> myTourList;

    do
    {
        cout << "1. Add a new tour package" << endl;
        cout << "2. Register a tourist to a package" << endl;
        cout << "3. Show all tourists registered" << endl;
        cout << "4. Show all packages available" << endl;
        cout << "5. Show the total tourist registered for a particular package and the number of availability" << endl;
        cout << "Option: ";
        cin >> option1;

        switch (option1)
        {
            case 1:
                {
                    cout << "Enter Package ID: ";
                    cin >> pid;
                    cout << "Enter Package Name: ";
                    cin >> pName;
                    cout << "Enter Package Price: ";
                    cin >> price;
                    cout << "Enter Package Description: ";
                    cin >> desc;
                    cout << "Enter the Starting-Date: ";
                    cin >> startingDate;
                    cout << "Enter the Package Duration: ";
                    cin >> duration;

                    TourPackage p1(pid, pName, price, desc, startingDate, duration);
                    myTourPackage.insert(p1);
                }
                break;

            case 2:
                {
                    check1 = false;
                    cout << "Enter Name: ";
                    cin >> name;
                    cout << "Enter ID: ";
                    cin >> id;

                    for (int i = 0; i < myTourist.size(); i++)
                    {
                        if (id == myTourist[i].getID())
                        {
                            trNo = i;
                            cout << "ID has been registered before!" << endl;
                            check1 = true;
                            break;
                        }
                    }

                    if (check1 == false)
                    {
                        trNo = myTourist.size();
                        cout << "Enter Contact No: ";
                        cin >> contactNo;
                        cout << "Enter No-of-People: ";
                        cin >> noOfPeople;
                        Tourist t1(name, id, contactNo, noOfPeople);
                        myTourist.push_back(t1);
                        cout << endl;
                    }

                    do
                    {
                        cout << "--------------------------------------" << endl;

                        set <TourPackage, less <TourPackage> > :: iterator p = myTourPackage.begin();

                        while (p!= myTourPackage.end())
                        {
                            cout << *p << endl;
                            p++;
                            cout << endl;
                        }

                        cout << "Which package would you like to select?: ";
                        cin >> option2;
                    }while (option2 < 1 || option2 > myTourPackage.size());

                    myTourList.insert(pair<TourPackage,Tourist> (getNthElementFromSet(myTourPackage, option2), myTourist[trNo]));
                    cout << "Successfully Registered for tour. " << endl;
                }

                break;

            case 3:
                {
                    int maxx = myTourist.size();
                    int counter = 0;
                    while (counter != maxx)
                    {
                        myTourist.at(counter).showTourist();
                        counter++;
                    }
                }

                break;

            case 4:
                {
                    set <TourPackage, less <TourPackage> > :: iterator p = myTourPackage.begin();

                    while (p!= myTourPackage.end())
                    {
                        cout << *p << endl;
                        p++;
                    }
                }

                break;

            case 5:
                {

                }

                break;

            default:

            break;
        }

    }while (option1 != 0);

    return 0;
}