/**
 *
 * @file     FunctorFind.cpp
 *
 * @authors  M. Laporte, D. Mathieu
 *
 * @date     07/12/2011
 *
 * @version  V1.0
 *
 **/
#include <string>
#include <vector>
#include <algorithm>  // sort()
#include <iostream>

using namespace std;

namespace
{
    template <typename T>
    class IPredicatGen
    {
      public :
        virtual ~IPredicatGen (void) {}
        virtual bool operator () (const T &) const = 0;

    }; // IPredicatGen

    template <typename T, typename TRes>
    class IUnaryFunction
    {
      public :
        virtual ~IUnaryFunction (void) {}
        virtual TRes operator () (const T &) const = 0;

    }; // IUnaryFunction

    class Pers
    {
        string   myNom;
        unsigned myAge;

      public :
        Pers (const string & Nom, unsigned Age)
            : myNom (Nom), myAge (Age) {}

        const string & getNom (void) const noexcept { return myNom; }
        unsigned       getAge (void) const noexcept { return myAge; }

    private :
        ostream & display (ostream & os)  const
        {
            return os << getAge () << " - " << getNom ();

        } // display()

      public :
        friend ostream & operator << (ostream & os, const Pers & p)
        {
            return p.display (os);

        }

    }; // Pers

    class SelParTrancheAge : public IPredicatGen <Pers>
//  class SelParTrancheAge : public IUnaryFunction <Pers, bool>
    {
        unsigned myAgeMin;
        unsigned myAgeMax;
      public :
        SelParTrancheAge (unsigned ageMin, unsigned ageMax) : myAgeMin (ageMin), myAgeMax (ageMax) {}
        virtual ~SelParTrancheAge (void) noexcept {}

        virtual bool operator () (const Pers & p) const
        {
            return myAgeMin <= p.getAge () && p.getAge () <= myAgeMax;

        } // operator ()

    }; // SelParTrancheAge

    class SelParNomMin : public IPredicatGen <Pers>
//  class SelParNomMin : public IUnaryFunction <Pers, bool> 
    {
        string myNomMin;
      public :
        SelParNomMin (const string & nomMin) : myNomMin (nomMin) {}
        virtual ~SelParNomMin (void) noexcept {}

        virtual bool operator () (const Pers & p) const
        {
            return myNomMin < p.getNom ();

        } // operator ()

    }; // SelParNomMin

    void functorFind (void)
    {
        cout << "FunctorFind : \n";

        typedef vector <Pers> CVPers;
        CVPers vPers;

        vPers.push_back ( Pers ("Charlotte", 21));
        vPers.push_back ( Pers ("Alfred",    12));
        vPers.push_back ( Pers ("Jean",      42));
        vPers.push_back ( Pers ("Noemie",    11));
        vPers.push_back ( Pers ("Berthe",    99));
        vPers.push_back ( Pers ("Agathe",    29));
        vPers.push_back ( Pers ("Sylvain",   42));
        vPers.push_back ( Pers ("Pierre",    75));

        for (const Pers & personne : vPers)
            cout << personne << '\n';

        CVPers::const_iterator pos;

        cout << "\nRecherche sur  43 <= age <= 75 : ";

        pos = find_if (vPers.begin (), vPers.end (), SelParTrancheAge (43, 75));// a completer
        if (vPers.end () == pos)
            cout << "Aucun element ne correspond a ce critere\n";
        else
            cout << *pos << '\n';

        cout << "\nRecherche sur  43 <= age <= 45 : ";

        pos = find_if (vPers.begin (), vPers.end (), SelParTrancheAge (43, 45)); // a completer
        if (vPers.end () == pos)
            cout << "Aucun element ne correspond a ce critere\n";
        else
            cout << *pos << '\n';

        cout << '\n';

        cout << "\nRecherche sur nom > Noemie : ";

        pos = find_if (vPers.begin (),  vPers.end (), SelParNomMin ("Noemie"));// a completer

        if (vPers.end () == pos)
            cout  << "Aucun element ne correspond a ce critere\n";
        else
            cout << *pos << '\n';

        cout  << "\nRecherche sur nom > alfred : ";

        pos = find_if (vPers.begin (),  vPers.end (), SelParNomMin ("alfred"));// a completer

        if (vPers.end () == pos)
            cout  << "Aucun element ne correspond a ce critere\n";
        else
            cout << *pos << '\n';


    } // functorFind()

} // namespace

int main (void)
{
    functorFind ();

    return 0;

} // main()