#define _GNU_SOURCE  // usleep, getline
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/select.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include "icmpd.h"
#include "util.h"


int main(void) {
	struct icmpd *server = icmpd_create_server(-1, 0);
	struct icmpd *conn = NULL;

	while (true) {
		// printf("Iter\n");

		if (icmpd_peek(server)) {
			struct icmpd_received msg = icmpd_recv(server);
			printf("Server recv: %zu\n", msg.length);
			xxd(msg.data, msg.length);

			if (conn) {
				printf("Message received while already connected\n");
				struct icmpd *d = icmpd_create_server(msg.id, msg.source_addr);
				icmpd_server_set_outstanding(d, msg.seqnum);
				icmpd_send(d, msg.data, msg.length);
				icmpd_destroy(d);
			} else {
				conn = icmpd_create_server(msg.id, msg.source_addr);
				icmpd_server_set_outstanding(conn, msg.seqnum);

				// icmpd_send(conn, "dankje", 6);
				// icmpd_destroy(conn);
			}

			free(msg.data);
		}

		if (icmpd_peek(conn)) {
			struct icmpd_received msg = icmpd_recv(conn);
			printf("Connection recv: %zu\n", msg.length);
			xxd(msg.data, msg.length);
			free(msg.data);
		}

		fd_set inset;
		FD_ZERO(&inset);
		FD_SET(0, &inset);
		struct timeval tv;
		tv.tv_sec = 1;
		tv.tv_usec = 0;
		int ret = select(1, &inset, NULL, NULL, &tv);
		if (ret < 0) {
			if (errno == EINTR) continue;
			perror("select");
			return 1;
		}
		if (ret == 0) continue;  // timeout
		if (FD_ISSET(0, &inset)) {
			char *line = NULL;
			size_t linelen = 0;
			ssize_t nr = getline(&line, &linelen, stdin);
			assert(nr >= 0);
			if (nr > 0) nr--;
			icmpd_send(conn, line, nr);
			free(line);
		}
	}
}