Database.cpp

#include "database.h"

using namespace std;

void Database::Add(const Date& date, const std::string& event) {

    base_vector.push_back(make_pair(date, event));
    stable_sort(base_vector.begin(), base_vector.end(),
        [](const pair<Date, string>& lhs,
            const pair<Date, string>& rhs) {
                return lhs.first < rhs.first;
        });
}

void Database::Print(ostream& is) {


    Date chek = base_vector.begin()->first;
    for (auto it = base_vector.begin(); it < base_vector.end(); it++) {
        if (it == base_vector.begin()) {
            is << it->first << ' ' << it->second << ' ';
        }
        if (it->first == chek) {
            is << it->second << ' ';
        }
        else if (it->first != chek) {
            is << endl << it->first << ' ' << it->second << ' ';
        }
    }
}
std::string Database::Last(const Date& a) {
    auto r = lower_bound(base_vector.begin(), base_vector.end(), [a](const  pair<Date, std::string>& i) {
        return i.first < a;
        });
    return r->second;
}

ostream& operator << (std::ostream& stream, const std::pair<Date, string>& a) {
    stream << a.first << ' ' << a.second;
    return stream;
}
bool operator <(const std::pair<Date, string>& lhs, const std::pair<Date, string>& rhs) {
    return lhs.first < rhs.first;
}