#include <iostream>
#include <vector>
#include <algorithm>
#include <fstream>
#define SIZE 3
using namespace std;

enum month {
    jan = 1, feb, mar, apr, may, june, jul, aug, sep, oct, nov, dec
};

typedef struct Date {
    int day;
    month mon;
    int year;
}date;

struct Tovar
{
    int section;
    char name[30];
    double price;
    int number;
    int countMon;
    date dt;

    Tovar() {}
    Tovar(int section, char n[30], double price, int number, int day, month mon, int year, int countMon)
    {
        this->section = section;
        memcpy(this->name, n, sizeof(n));
        this->price = price;
        this->number = number;
        this->dt.day = day;
        this->dt.mon = mon;
        this->dt.year = year;
        this->countMon = countMon;
    }
};

//Функция для сравнения
bool compare(Tovar t, char name[30], int price)
{
    for (int i = 0; name[i] != '\0'; i++)
    {
        if (name[i] != t.name[i])
            return false;
    }

    return true;
}

//Ф-я для сохранения результатов в файле
void save(Tovar* t)
{
    ofstream file;
    file.open("data.txt");

    for (int i = 0; i < SIZE; i++)
    {
        file << t[i].name << " " << t[i].price << " " << t[i].section << " " << t[i].number
            << " " << t[i].dt.day << " " << t[i].dt.mon << " " << t[i].dt.year << " " << t[i].countMon << endl;
    }

    file.close();
}

//Ф-я для загрузки результатов с файла
void load(Tovar* t)
{
    char name[30];
    int section = 23;
    double price;
    int number = 1;
    int day, year;
    int mon;
    int countMon;

    ifstream file("data.txt");

    if (file.is_open())
    {
        for (int i = 0; i < SIZE; i++)
        {
            file >> name >> price >> section >> number >> day >> mon >> year >> countMon;

            memcpy(t[i].name, name, sizeof(name));
            t[i].price = price;
            t[i].section = section;
            t[i].number = number;
            t[i].dt.day = day;
            t[i].dt.mon = (month)mon;
            t[i].dt.year = year;
            t[i].countMon = countMon;
        }

        file.close();
    }
    else
    {
        cout << "Unable to open file" << endl;
    }
}

//Ф-я заполнения массива студентов
void init_products(Tovar* t)
{
    char name[30];
    int section = 23;
    double price;
    int number = 1;
    int day, year;
    int mon;
    int countMon;

    int position = 0;
    int i = 0;
    while (i < SIZE)
    {
        cout << "Enter the name of product, price and date of creation d/m/y and shelf life in month" << endl;
        cin >> name >> price >> day >> mon >> year >> countMon;
        bool isAdded = false;

        for (int j = 0; j < SIZE; j++)
        {
            if (compare(t[j], name, price))
            {
                t[j].number++;
                isAdded = true;
                break;
            }
        }

        if (!isAdded)
        {
            t[i].price = price;
            t[i].section = 24;
            t[i].number = number;
            t[i].dt.day = day;
            t[i].dt.mon = (month)mon;
            t[i].dt.year = year;
            t[i].countMon = countMon;
            memcpy(t[i].name, name, sizeof(name));
            isAdded = false;
            i++;
        }
    }

    save(t);
}

//Функция вывода студентов
void show(Tovar* t)
{
    for (int i = 0; i < SIZE; i++)
    {
        cout << "________________________" << endl;
        cout << "Name: " << t[i].name << endl;
        cout << "Price: " << t[i].price << endl;
        cout << "Number: " << t[i].number << endl;
        cout << "________________________" << endl;
    }
}

//Функция сравнения символов
bool comparisonFunc(const char *c1, const char *c2)
{
    return strcmp(c1, c2) < 0;
}

//Функция для нахождения по секции
void findBySection(Tovar* t, int section)
{
    vector<char*> names;

    for (int i = 0; i < SIZE; i++)
    {
        if (t[i].section == section)
            names.push_back(t[i].name);
    }

    sort(names.begin(), names.end(), comparisonFunc);

    cout << "The products of section number " << section << endl;
    for (auto x : names)
        cout << x << endl;
}

//Функция для нахождения по количеству товаров
void findByNumber(Tovar* t, int number)
{
    vector<char*> products;

    for (int i = 0; i < SIZE; i++)
    {
        if (t[i].number < number)
            products.push_back(t[i].name);
    }

    for (auto x : products)
        cout << x << endl;
}

//Функция для находения просроченных товаров
void findOutOfDate(Tovar* t, int day, int mon, int year)
{
    vector<char*> products;

    month end;

    for (int i = 0; i < SIZE; i++)
    {
        end = (month)((t[i].dt.mon + t[i].countMon) % 12);

        if (t[i].dt.year < year)
        {
            products.push_back(t[i].name);
        }
        else
        {
            if (end < mon)
            {
                products.push_back(t[i].name);
            }
            else
            {
                if (t[i].dt.day < day && t[i].dt.year < year && t[i].dt.mon < mon)
                {
                    products.push_back(t[i].name);
                }
            }
        }
    }


    for (auto x : products)
        cout << x << endl;
}

int main()
{
    Tovar* t = new Tovar[SIZE];
    init_products(t);//функция для заполнения массива с клавы
    //load(t);//Функция для заполнения масива из файла
    show(t);

    //findOutOfDate(t, 2, 1, 2018);
    //findByNumber(t, 2);
    //findBySection(t, 24);

    return 0;
}