qaservice.h

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/*
 * Copyright (C) 2018-2025 QuasarApp.
 * Distributed under the lgplv3 software license, see the accompanying
 * Everyone is permitted to copy and distribute verbatim copies
 * of this license document, but changing it is not allowed.
*/
 
#ifndef QASERVICE_H
#define QASERVICE_H
 
#include <memory>
#include <utility>
namespace QuasarAppUtils {
 
template<class Base>
class Service
{
 
public:
    Service() {};
 
    static inline std::unique_ptr<Base>& initService() {
        auto& val = instancePrivat();
        if(!val) {
            val.reset(new Base());
        }
        return val;
    }
 
    static bool initService(std::unique_ptr<Base> obj) {
        auto& val = instancePrivat();
        if(!val) {
            val = std::move(obj);
            return true;
        }
        return false;
    };
 
    static Base* instance() {
        return instancePrivat().get();
    }
 
    static Base* autoInstance() {
        auto& val = instancePrivat();
 
        if (!val) {
            initService();
        }
 
        return val.get();
    }
 
    static void deinitService() {
        auto& val = instancePrivat();
 
        if(val) {
            val.release();
        }
    }
 
private:
    static inline std::unique_ptr<Base>& instancePrivat() {
        static std::unique_ptr<Base> instance = nullptr;
        return instance;
    }
 
};
 
 
}
#endif // QASERVICE_H