#pragma once

#include "colnodapi.h"
#include "databaseapi.h"

Q_DECLARE_LOGGING_CATEGORY(syncmanager)

class SyncManager : public QObject
{
    Q_OBJECT
    friend class SyncManagerTest;
public:
    explicit SyncManager(bool dryMode);

    bool databaseInitialization();
    bool startSynchronization();

    // New approach
private:
    /**
     * @brief Preapre data to be pushed to database and colnod from actual downloaded data
     * @param data from database
     * @param data from colnod
     * @return prepared data to be pushed into colnod and db
     *
     * @todo rename when removed old aproach
     */
    std::unique_ptr<PreparedData> prepareDataNew(const std::shared_ptr<Data> &databaseData, const std::shared_ptr<Data> &colnodData);

private:
    void initNewToken(std::shared_ptr<Token> token);

    bool prepareData();
    bool processData();
    void updateLastUpdate(qint64 syncBegin);


private:
    Q_SLOT void saveColnodData(const std::shared_ptr<Data> &data);
    Q_SLOT void saveDatabaseData(const std::shared_ptr<Data> &data);
    Q_SLOT void areDataReady();

signals:
    void dataReady();
    void dataProcessFinished();
    void syncFinished();

    void error();

private:
    std::shared_ptr<ColnodAPI> colnod;
    std::shared_ptr<DatabaseAPI> database;
    serversdk::RequestManager reqMan;
    serversdk::DatabaseManager dbMan;
    Timestamp mlastSync;

    int dataAmount = 0;
    bool mDryMode;

    std::function<void()> onError = nullptr;
};