BaseHttp/Core/BaseController.h

#ifndef BASECONTROLLER_H
#define BASECONTROLLER_H

#include "Controller.h"
#ifndef _MSC_VER
#include <cxxabi.h>
#endif
#include "Core/HttpManager.h"

template<typename T>
class BaseController : public Controller
{
public:
    [[nodiscard]] const QString className() const override { return allocator.className(); }

    static QString getClassName() { return allocator.className(); }

    static QString getClassname(const char *mangled_name)
    {
#ifndef _MSC_VER
        std::size_t len = 0;
        int status = 0;
        std::unique_ptr<char, decltype(&std::free)>
            ptr(__cxxabiv1::__cxa_demangle(mangled_name, nullptr, &len, &status), &std::free);
        if (status == 0) {
            return {ptr.get()};
        }
        return "";
#else
        auto pos = strstr(mangled_name, " ");
        if (pos == nullptr)
            return std::string{mangled_name};
        else
            return std::string{pos + 1};
#endif
    }

protected:
    BaseController() = default;

    ~BaseController() override = default;

private:
    class Allocator
    {
    public:
        Allocator() { registerClass<T>(); }

        [[nodiscard]] const QString &className() const
        {
            static QString class_name = getClassname(typeid(T).name());
            return class_name;
        }

        template<typename D>
        typename std::enable_if<std::is_default_constructible<D>::value, void>::type registerClass()
        {
            HttpManager::instance().registerCtl(className(),
                                                []() -> BaseController * { return new T(); });
        }

        template<typename D>
        typename std::enable_if<!std::is_default_constructible<D>::value, void>::type registerClass()
        {}
    };

    static Allocator allocator;
};

template<typename T>
typename BaseController<T>::Allocator BaseController<T>::allocator;

#endif // BASECONTROLLER_H