#include <iostream>
#include <fstream>
#include <vector>
#include <tchar.h>
#include <string>
#include <sstream>

using namespace std;

class Shop
{

public:
    string shopName, productName;
    float quantityGoods = 0, pricePerKilogram = 0;

    Shop(){}
    Shop(string s, string pro, float q, float pri) : shopName(s), productName(pro), quantityGoods(q), pricePerKilogram(pri)
    {}


    static void Write(const string path, vector<Shop> operations) {

        ofstream out(path, ios::ate);

        if (out.is_open())
        {
            for (int i = 0; i < operations.size(); i++)
            {
                out << operations[i].shopName << " " << operations[i].productName << " " << operations[i].quantityGoods << " " << operations[i].pricePerKilogram << endl;
            }
        }
        out.close();
    }
    static void Read(const string path, vector<Shop> operations) {

        string shopName, productName;
        float quantityGoods, pricePerKilogram;
        ifstream in(path); // окрываем файл для чтения
        if (in.is_open())
        {
            while (in >> shopName >> productName >> quantityGoods >> pricePerKilogram)
            {
                operations.push_back(Shop(shopName, productName, quantityGoods, pricePerKilogram));
            }
        }
        in.close();

        for (int i = 0; i < operations.size(); i++)
        {
            cout << "\tНазва магазину: " << operations[i].shopName << "\tНазва товару: " << operations[i].productName << "\tКiлькiсть товарiв: " << operations[i].quantityGoods << "\tЦiна за кiлограм: " << operations[i].pricePerKilogram << endl;
        }
    }

    static void Write(const string path, Shop operations) {
        ofstream out(path, ios::app);

        if (out.is_open())
        {
            out << operations.shopName << " " << operations.productName << " " << operations.quantityGoods << " " << operations.pricePerKilogram << endl;
        }
        out.close();
    }
};

vector<Shop> Product() {
    vector<Shop> operations = {
        Shop("Shop1", "Good1", 120, 3),
        Shop("Shop2", "Good2", 134, 43),
        Shop("Shop3", "Good3", 176, 2),
        Shop("Shop4", "Good4", 156, 5)
    };
    return operations;
}
void Add(const string path, Shop operations) {

    cout << "Назва магазину: ";
    cin >> operations.shopName;

    cout << "Назва товару: ";
    cin >> operations.productName;

    cout << "Кiлькiсть товарiв: ";
    cin >> operations.quantityGoods;

    cout << "Цiна за кiлограм: ";
    cin >> operations.pricePerKilogram;

    Shop::Write(path, operations);

}
void Menu() {
    cout << " 1. Додати товар.\n 2. Переглянути товари.\n 0. Вийти.\n";
    cout << ">> ";
}


int main() {
    setlocale(0, "");
    const string path = "shop.txt";
    Shop shop;
    uint16_t in = -1;

    Shop::Write(path, Product());
    vector<Shop> new_operations;

    do {
        Menu();
        cin >> in;
        switch (in)
        {
        case 1: { Add(path, shop); } break;
        case 2: { Shop::Read(path, new_operations); } break;
        default:
            break;
        }
    } while (in != 0);

    system("pause");
    return 0;
}