#include <unistd.h>

#include "shared/utils.h"
#include "minecctl.h"
#include "server.h"
#include "mc-commands.h"
#include "misc.h"
#include "shared/mc-protocol.h"

bool do_mc_pcount(struct cfg *cfg, unsigned *online, unsigned *max)
{
	struct server *server;
	struct saddr *saddr;
	char buf[4096];
	size_t plen, off;
	ssize_t r;
	bool rv = false;
	int fd;

	server = server_get_default(cfg);

	fd = connect_any(&server->scfg.remotes, true);
	if (fd < 0) {
		error("%s: unable to connect", server->name);
		return false;
	}

	/* FIXME: connect_any needs to indicate the address it used */
	saddr = list_first_entry(&server->scfg.remotes, struct saddr, list);
	if (!saddr) {
		error("No saddr");
		goto out;
	}

	if (!mc_protocol_create_status_request(buf, sizeof(buf), &plen,
					       saddr)) {
		error("Failed to create req");
		goto out;
	}

	/* FIXME: do proper checks for EINTR etc */
	off = 0;
	while (off < plen) {
		r = write(fd, buf + off, plen - off);
		if (r <= 0) {
			error("write failed: %zi (%m)", r);
			goto out;
		}
		off += r;
	}

	off = 0;
	while (off < sizeof(buf)) {
		r = read(fd, buf + off, sizeof(buf) - off);
		if (r <= 0) {
			error("Read failed %zi: %m", r);
			goto out;
		}

		off += r;

		if (mc_is_handshake_complete(buf, off)) {
			rv = true;
			break;
		}
	}

	if (!mc_protocol_parse_status_reply(buf, off, online, max)) {
		error("Failed to get player count");
		return false;
	}

out:
	close(fd);
	return rv;
}