/**
 * Relational pipes
 * Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
#include <string>
#include <cstring>
#include <unistd.h>
#include <stdexcept>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <vector>

#include "Socket.h"

namespace relpipe {
namespace out {
namespace socket {

class TCPSocket : public Socket {
public:

	void send(const std::string& message) override {
		// TODO: TCP send()
		struct sockaddr_in a;
		memset((char *) &a, 0, sizeof (a));
		a.sin_family = AF_INET;
		a.sin_addr.s_addr = inet_addr("127.0.0.1"); // TODO: use getaddrinfo() instead (because of error -1 = 255.255.255.255)
		a.sin_port = htons(1234);

		int s = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
		sendto(s, message.c_str(), message.size(), 0, (sockaddr*) & a, sizeof (a));

		close(s);
	}

	const std::string receive() override {
		// TODO: TCP receive()
		return "TODO: receive() a message";
	}

};

static class TCPSocketFactory : public SocketFactory {
public:

	bool canHandle(const std::string& connectionString) override {
		return connectionString.rfind("tcp://", 0) == 0;
	}

	Socket* open(const std::string& connectionString) override {
		// TODO: pass string to constructor
		return new TCPSocket();
	}
} tcpSocketFactory;

static std::vector<SocketFactory*> factories{&tcpSocketFactory};

SocketFactory* SocketFactory::find(const std::string& connectionString) {
	for (auto f : factories) if (f->canHandle(connectionString)) return f;
	return nullptr;
}


}
}
}