#include "libsock/server/server.hpp"
#include "libsock/types.hpp"
#include "misc/FileDescriptor.hpp"
#include <cstring>
#include <mutex>
#include <stdexcept>
#include <sys/socket.h>

using namespace LibSock::Server;

namespace LibSock {
namespace Server {

Server::Server(uint16_t port, bool reuseaddr, bool keepalive)
	: m_sockfd(std::make_shared<LibSock::CFileDescriptor>(socket(AF_INET, SOCK_STREAM, 0)))
	, m_port(port) {
	if (pServer)
		throw std::runtime_error("server:server Server already exist");
	std::lock_guard<std::mutex> lk(m_mutex);
	if (!m_sockfd->isValid() || m_sockfd->get() < 0)
		throw std::runtime_error("server:server Failed to create socket");

	constexpr int opt  = 1;
	constexpr int size = sizeof(opt);
	if (keepalive && setsockopt(m_sockfd->get(), SOL_SOCKET, SO_REUSEADDR, &opt, size) < 0)
		throw std::runtime_error("server:server setsockopt(SO_REUSEADDR) failed");

	if (reuseaddr && setsockopt(m_sockfd->get(), SOL_SOCKET, SO_KEEPALIVE, &opt, size) < 0)
		throw std::runtime_error("server:server setsockopt(SO_KEEPALIVE) failed");

	memset(&m_addr, 0, sizeof(m_addr));
	m_addr.sin_family	   = AF_INET;
	m_addr.sin_port		   = htons(m_port);
	m_addr.sin_addr.s_addr = INADDR_ANY;
	if (bind(m_sockfd->get(), reinterpret_cast<sockaddr *>(&m_addr), sizeof(m_addr)) || listen(m_sockfd->get(), 5))
		throw std::runtime_error("server:server Failed to bind or listen on socket");
}

SP<Server> Server::create(uint16_t port, bool reuseaddr, bool keepalive) {
	if (pServer)
		throw std::runtime_error("server:server Server already exist");
	pServer = SP<Server>(new Server(port, reuseaddr, keepalive));
	return pServer;
}

SP<Server> Server::get() {
	if (!pServer)
		pServer = shared_from_this();
	return pServer;
}

Server::~Server() {
	m_sockfd.reset();
}

SP<LibSock::CFileDescriptor> Server::getSocket() const {
	return m_sockfd;
}

} // namespace Server
} // namespace LibSock