PNP_PIbd-31_Rodionov_I_A_CourseWork_ClientPart/apiclient.h

#ifndef APICLIENT_H
#define APICLIENT_H

#include <QtCore>
#include <QtNetwork>
#include <QObject>

#include "models/types.h" // IWYU pragma: keep

class ApiClient : public QObject
{
    Q_OBJECT

public:
    explicit ApiClient(QObject *parent = nullptr);

    void getEntities(const QString &url);
    void getFilteredDevices(bool isWorking, double priceFrom, double priceTo, bool applyFilters,
                                     bool disregardState, int entityId, int currentEntity, const QString &searchText,
                                     const QString &sortOrder);
    void updateDevice(int id, const Device &device);

signals:
    void departmentsReceived(const QMap<int, Department> &departments);
    void deviceModelsReceived(const QMap<int, DeviceModel> &deviceModels);
    void deviceTypesReceived(const QMap<int, DeviceType> &deviceType);
    void locationsReceived(const QMap<int, Location> &locations);
    void manufacturersReceived(const QMap<int, Manufacturer> &manufacturers);
    void devicesReceived(const QList<Device> &devices);
    void deviceUpdated(bool success);

private:
    template <typename T>
    QMap<int, T> deserializeEntities(const QByteArray &data, const QString &itemsKey);
    Device deserializeDevice(const QJsonObject &json);

private slots:
    void parseData(QNetworkReply *reply);
    void handleDeviceUpdated(QNetworkReply *reply);
    void handleError(QNetworkReply::NetworkError error);

private:
    const QString baseUrl = "http://localhost:8080";

    QNetworkAccessManager *_networkManager;
};

template<typename T>
QMap<int, T> ApiClient::deserializeEntities(const QByteArray &data, const QString &itemsKey)
{
    QMap<int, T> entities;
    QJsonDocument doc = QJsonDocument::fromJson(data);
    QJsonArray itemsArray = doc.object().value(itemsKey).toArray();

    for (const QJsonValue &value : itemsArray) {
        T entity;
        entity.fromJson(value.toObject());
        entities.insert(entity.id(), entity);
    }

    return entities;
}

#endif // APICLIENT_H