#include "proto.h"
#include "log.h"

void flush_messages(int sfd, struct message* cursor, const struct message* const end) {
	dbg("Flushing %ld pending messages", end - cursor);
	for(; cursor < end; cursor++) {
		//now reply the client with the same data
		int rc = sendto(sfd, cursor->payload, cursor->payload_len, 0, (const struct sockaddr*)&cursor->dest, cursor->dest_len);
		if (rc < 0) {
			fatal("Failed to send message");
		}
	}
}

int main(int argc, char** argv) {
	struct message outbuff[10] = {0};

	struct dht dht;
	dht.self = (struct nodeid){.inner={0x0034048f, 0x08000020, 0x00888880, 0x02008460, 0x0ab00521}};
	struct message* message_cursor = outbuff;
	proto_begin(&dht, &message_cursor, outbuff+10);
	flush_messages(dht.sfd, outbuff, message_cursor);


	int rc = 0;
	while(rc == 0) {
		char buff[2049];
		printf("Waiting for data...");
		fflush(stdout);

		// Try to receive some data, this is a blocking call
		struct sockaddr_storage remote;
		socklen_t remote_len = sizeof(remote);
		ssize_t recv_len = recvfrom(dht.sfd, buff, 2048, 0, (struct sockaddr *)&remote, &remote_len);
		if(recv_len == -1) {
			fatal("RECV failed");
		} else if(recv_len >= 2048) {
			fatal("Receive buffer too small");
		}
		// Null terminate the packet
		buff[recv_len] = '\0';

		struct message* message_cursor = outbuff;
		rc = proto_run(&dht, buff, recv_len, (struct sockaddr_in*)&remote, remote_len, &message_cursor, outbuff+10);
		flush_messages(dht.sfd, outbuff, message_cursor);
	}

	proto_end(&dht);

	return rc;
}