#include <iostream>
#include <string>

using namespace std;

#include "person.h"

void person::modify_food(string new_food) {
    fav_food = new_food;
}

void person::display_person(vector<person> & p) {
    for(unsigned int i = 0; i < friends.size(); i++) {
        for(unsigned int j = 0; j < p.size(); j++) {
            if(p[j].name == friends[i] and p[j].fav_food == fav_food) {
                cout << p[j].name << " also likes " << fav_food << endl;
            }
        }
    }
}

void person::add_friend(string name) {
    if(not already_friends(name)) {
        friends.push_back(name);
    }
}

bool person::already_friends(string name) {
    for(unsigned int i = 0; i < friends.size(); i++) {
        if(friends[i] == name) {
            return true;
        }
    }
    return false;
}

void person::delete_friend(string name) {
    for(unsigned int i = 0; i < friends.size(); i++) {
        if(friends[i] == name) {
            friends.erase((friends.begin())+i);
            break;
        }
        else {
            cerr << "this person does not exist" << endl;
        }
    }
}