DLLoader.hpp

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/*
** EPITECH PROJECT, 2023
** RType
** File description:
** DLLoader.cpp
*/
 
#pragma once
 
#include "DLLoader.hpp"
#include "IGame.hpp"
#include "networking/server/ServerSocket.hpp"
#include <dlfcn.h>
#include <iostream>
 
class DLLoader
{
  public:
    explicit DLLoader(const std::string &libraryPath)
    {
        std::cout << "Loading library: " << libraryPath << '\n';
        handle = dlopen(libraryPath.c_str(), RTLD_LAZY);
        if (!handle) {
            std::cerr << "Cannot open library: " << dlerror() << '\n';
        }
        std::cout << "Library loaded\n";
    }
 
    ~DLLoader()
    {
        if (handle) {
            dlclose(handle);
        }
    }
 
    IGame *getInstance(const std::string &functionName, const std::shared_ptr<ServerSocket> &socket)
    {
        dlerror();
        auto *create = (create_t *)dlsym(handle, functionName.c_str());
        const char *dlsym_error = dlerror();
        if (dlsym_error) {
            std::cerr << "Cannot load symbol '" << functionName << "': " << dlsym_error << '\n';
            return nullptr;
        }
        if (!create) {
            std::cerr << "Function '" << functionName << "' not found in the library.\n";
            return nullptr;
        }
        std::cout << "Function '" << functionName << "' found in the library.\n";
        return create(socket);
    }
 
  private:
    typedef IGame *create_t(std::shared_ptr<ServerSocket>);
    void *handle = nullptr;
};