database.cpp

#include <iostream>
#include <memory>
#include <string>

// ===== Реализация (Implementor) =====
class Device {
public:
    virtual ~Device() = default;
    virtual std::string getInfo() const = 0;
};

// Конкретные реализации
class VideoCard : public Device {
public:
    std::string getInfo() const override {
        return "Видеокарта: NVIDIA GeForce RTX 3060, 12GB";
    }
};

class Processor : public Device {
public:
    std::string getInfo() const override {
        return "Процессор: Intel Core i7-12700K, 12 ядер";
    }
};

class HardDisk : public Device {
public:
    std::string getInfo() const override {
        return "Жесткий диск: Seagate Barracuda 2TB, HDD";
    }
};

// Новое устройство (расширение библиотеки)
class RAM : public Device {
public:
    std::string getInfo() const override {
        return "Оперативная память: Corsair Vengeance 16GB DDR4";
    }
};

// ===== Абстракция (Abstraction) =====
class Report {
protected:
    std::shared_ptr<Device> device;
public:
    Report(std::shared_ptr<Device> dev) : device(dev) {}
    virtual ~Report() = default;
    virtual void showReport() const = 0;
};

// Конкретные абстракции
class SimpleReport : public Report {
public:
    SimpleReport(std::shared_ptr<Device> dev) : Report(dev) {}
    void showReport() const override {
        std::cout << "[Простой отчет]\n" << device->getInfo() << "\n";
    }
};

class DetailedReport : public Report {
public:
    DetailedReport(std::shared_ptr<Device> dev) : Report(dev) {}
    void showReport() const override {
        std::cout << "[Детализированный отчет]\n"
            << "Устройство: " << device->getInfo() << "\n"
            << "Дата генерации: 02.04.2026\n"
            << "Автор: Михаил\n";
    }
};

// ===== Демонстрация =====
int main() {
    std::shared_ptr<Device> gpu = std::make_shared<VideoCard>();
    std::shared_ptr<Device> cpu = std::make_shared<Processor>();
    std::shared_ptr<Device> hdd = std::make_shared<HardDisk>();
    std::shared_ptr<Device> ram = std::make_shared<RAM>();

    SimpleReport report1(gpu);
    DetailedReport report2(cpu);
    SimpleReport report3(hdd);
    DetailedReport report4(ram);

    report1.showReport();
    report2.showReport();
    report3.showReport();
    report4.showReport();

    return 0;
}