#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>

#include <ecp/core.h>

#include <util.h>

#include "init.h"

ECPContext ctx;
ECPSocket sock;
ECPConnHandler handler;
ECPConnection conn;

#define CTYPE_TEST  0
#define MTYPE_MSG   0

static int handle_open(ECPConnection *conn, ECP2Buffer *b) {
    char *_msg = "PERA JE CAR!";
    ssize_t rv;

    printf("OPEN\n");
    rv = ecp_msg_send(conn, MTYPE_MSG, (unsigned char *)_msg, strlen(_msg)+1);

    return ECP_OK;
}

static ssize_t handle_msg(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, size_t msg_size, ECP2Buffer *b) {
    printf("MSG C:%s size:%ld\n", msg, msg_size);
    return msg_size;
}

static void usage(char *arg) {
    fprintf(stderr, "Usage: %s <address> <node.pub>\n", arg);
    exit(1);
}

int main(int argc, char *argv[]) {
    ECPDHKey key_perma;
    ECPNode node;
    ecp_ecdh_public_t node_pub;
    int rv;

    /* client */
    if (argc != 3) usage(argv[0]);

    rv = ecp_init(&ctx);
    printf("ecp_init RV:%d\n", rv);

    ecp_conn_handler_init(&handler, handle_open, NULL, handle_msg, NULL);
    ecp_ctx_set_handler(&ctx, CTYPE_TEST, &handler);

    rv = ecp_dhkey_gen(&key_perma);
    printf("ecp_dhkey_gen RV:%d\n", rv);

    rv = ecp_sock_create(&sock, &ctx, &key_perma);
    printf("ecp_sock_create RV:%d\n", rv);

    rv = ecp_sock_open(&sock, NULL);
    printf("ecp_sock_open RV:%d\n", rv);

    rv = ecp_start_receiver(&sock);
    printf("ecp_start_receiver RV:%d\n", rv);

    rv = ecp_util_load_key(argv[2], &node_pub, NULL);
    printf("ecp_util_load_key RV:%d\n", rv);

    ecp_node_init(&node, &node_pub, NULL);
    rv = ecp_node_set_addr(&node, argv[1]);
    printf("ecp_node_set_addr RV:%d\n", rv);

    ecp_conn_init(&conn, &sock, CTYPE_TEST);
    rv = ecp_conn_open(&conn, &node);
    printf("ecp_conn_open RV:%d\n", rv);

    while (1) sleep(1);
}