ExPrep3

#include <iostream>
#include <list>

using namespace std;

class Person{
public:
    string email;
    string name;
    string surname;

    Person() = default;

    Person(const char* email, const char* name, const char* surname){
        this->email = email;
        this->name = name;
        this->surname = surname;
    }
};

class Following{
public:
    Person* follower;
    Person* follows;

    Following() = default;
    Following(Person* bjacz, Person* mastier){
        this->follower = bjacz;
        this->follows - mastier;
    }
};

class SocialGraph{
public:
    list <Person> people;
    list <Following> foll;

    bool addPerson(const char* email, const char* name, const char* surname){
        for(auto person:people){
            if (person.email == email){
                return false;
            }
        }
        this->people.emplace_back(Person(email,name,surname));
    }
    bool removePerson(const char* email){
        for (auto i = foll.begin(); foll.end()!=i; ++i){
            if (((*i).follows->email == email || (*i).follower->email == email)){
                i = foll.erase(i);
            }
        }
        for (auto i = people.begin(); people.end()!=i; ++i){
            if ((*i).email == email){
                i = people.erase(i);
            }
        }
    }

    Person* findPerson(const char* email){
        for(auto i = people.begin(); people.end()!=i; ++i){
            if ((*i).email == email){
                return &(*i);
            }
        }
    }

    bool addFollower(const char* emailTo,const char* emailFrom){
        for(auto follow:foll) {
            if (follow.follower->email == emailFrom && follow.follows->email == emailTo) {
                return false;
            }
        }
        Following abc;
        abc.follower = findPerson(emailFrom);
        abc.follows = findPerson(emailTo);
        foll.push_back(abc);
        return true;
    }

    bool unfollow(const char* emailTo,const char* emailFrom){
        for(auto i = foll.begin(); foll.end()!=i; ++i){
            if ((*i).follower->email == emailFrom && (*i).follows->email == emailTo){
                i = foll.erase(i);
            }
        }
    }

    void printPeople(){
        for(auto person:people){
            cout << "name: " << person.name << "\nsurname: " << person.surname << "\nemail: " << person.email;
            cout << "\n___________________________________________\n";
        }
    };

    void printFollowers(){
        for(auto i = foll.begin(); foll.end()!=i; ++i){
            cout << (*i).follower->name << " -> " << (*i).follows->name << "\n";
        }
    }
};


int main() {
    SocialGraph a;
    a.addPerson("obajtekmagda@gmail.com","Magdalena","Obajtek");
    a.addPerson("aaaaaaaaaa@gmail.com","Aaaaa","Bbbbbbb");
    a.addPerson("ccccccccccc@gmail.com","Ccccc","Dddddddddddd");
    a.printPeople();
    a.addFollower("obajtekmagda@gmail.com","ccccccccccc@gmail.com");

    cout << "\n\n";
    a.printFollowers();
    a.unfollow("obajtekmagda@gmail.com","ccccccccccc@gmail.com");
    a.printFollowers();
    return 0;
}