#include <iostream>
#include <unistd.h>
#include "testconnections.h"

#include <stdio.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <netdb.h>
#include <string.h>

#include <openssl/sha.h>
#include "maxinfo_func.h"
#include <sys/epoll.h>
#include <jansson.h>
#include <fcntl.h>

using namespace std;

#define PORT 8080
#define USERAGENT "HTMLGET 1.1"

int create_tcp_socket()
{
    int sock;
    if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
    {
        perror("Can't create TCP socket");
        return 0;
    }
    return sock;
}

char *get_ip(char *host)
{
    struct hostent *hent;
    int iplen = 16; //XXX.XXX.XXX.XXX
    char *ip = (char *)malloc(iplen + 1);
    memset(ip, 0, iplen + 1);
    if ((hent = gethostbyname(host)) == NULL)
    {
        herror("Can't get IP");
        return NULL;
    }
    if (inet_ntop(AF_INET, (void *)hent->h_addr_list[0], ip, iplen) == NULL)
    {
        perror("Can't resolve host");
        return NULL;
    }
    return ip;
}

char *build_get_query(char *host, const char *page)
{
    char *query;
    const char *getpage = page;
    char *tpl = (char *) "GET /%s HTTP/1.1\r\nHost: %s\r\nUser-Agent: %s\r\n\r\n";
    if (getpage[0] == '/')
    {
        getpage = getpage + 1;
        fprintf(stderr, "Removing leading \"/\", converting %s to %s\n", page, getpage);
    }
    // -5 is to consider the %s %s %s in tpl and the ending \0
    query = (char *)malloc(strlen(host) + strlen(getpage) + strlen(USERAGENT) + strlen(tpl) - 5);
    sprintf(query, tpl, getpage, host, USERAGENT);
    return query;
}

char * get_maxinfo(const char * page, TestConnections* Test)
{
    struct sockaddr_in *remote;
    int sock;
    int tmpres;
    char *ip;
    char *get;
    char buf[BUFSIZ + 1];

    sock = create_tcp_socket();
    ip = get_ip(Test->maxscales->IP[0]);
    if (ip == NULL)
    {
        Test->add_result(1, "Can't get IP\n");
        return NULL;
    }
    remote = (struct sockaddr_in *)malloc(sizeof(struct sockaddr_in *));
    remote->sin_family = AF_INET;
    tmpres = inet_pton(AF_INET, ip, (void *)(&(remote->sin_addr.s_addr)));
    if ( tmpres < 0)
    {
        Test->add_result(1, "Can't set remote->sin_addr.s_addr\n");
        return NULL;
    }
    else if (tmpres == 0)
    {
        Test->add_result(1, "%s is not a valid IP address\n", ip);
        return NULL;
    }
    remote->sin_port = htons(PORT);

    if (connect(sock, (struct sockaddr *)remote, sizeof(struct sockaddr)) < 0)
    {
        Test->add_result(1, "Could not connect\n");
        return NULL;
    }
    get = build_get_query(Test->maxscales->IP[0], page);
    //Test->tprintf("Query is:\n<<START>>\n%s<<END>>\n", get);

    //Send the query to the server
    int sent = 0;
    while (sent < strlen(get))
    {
        tmpres = send(sock, get + sent, strlen(get) - sent, 0);
        if (tmpres == -1)
        {
            Test->add_result(1, "Can't send query\n");
            return NULL;
        }
        sent += tmpres;
    }
    //now it is time to receive the page
    memset(buf, 0, sizeof(buf));

    char* result = (char*)calloc(BUFSIZ, sizeof(char));
    size_t rsize = sizeof(buf);
    while ((tmpres = recv(sock, buf, BUFSIZ, MSG_WAITALL)) > 0)
    {
        result = (char*)realloc(result, tmpres + rsize);
        rsize += tmpres;
        strcat(result, buf);
        memset(buf, 0, tmpres);
    }
    if (tmpres < 0)
    {
        Test->add_result(1, "Error receiving data\n");
        return NULL;
    }

    free(get);
    free(remote);
    free(ip);
    close(sock);

    char * content = strstr(result, "[");
    if (content == NULL)
    {
        Test->add_result(1, "Content not found\n");
        free(result);
        return NULL;
    }

    char * ret_content = (char*) calloc(strlen(content) + 1, sizeof(char));
    mempcpy(ret_content, content, strlen(content));
    free(result);

    return ret_content;
    //return(result);
}

char * read_sc(int sock)
{
    char buf[BUFSIZ + 1];
    int tmpres;
    memset(buf, 0, sizeof(buf));

    char *result = (char*)calloc(BUFSIZ, sizeof(char));
    size_t rsize = sizeof(buf);
    while ((tmpres = recv(sock, buf, BUFSIZ, 0)) > 0)
    {
        result = (char*)realloc(result, tmpres + rsize);
        rsize += tmpres;
        //printf("%s", buf);
        strcat(result, buf);
        memset(buf, 0, tmpres);
    }
    return result;
}
int send_so(int sock, char * data)
{
    int tmpres;
    int sent = 0;
    while (sent < strlen(data))
    {
        tmpres = send(sock, data + sent, strlen(data) - sent, 0);
        if (tmpres == -1)
        {
            return -1;
        }
        sent += tmpres;
    }
    return 0;
}

static char * bin2hex(const unsigned char *old, const size_t oldlen)
{
    char *result = (char*) malloc(oldlen * 2 + 1);
    size_t i, j;

    for (i = j = 0; i < oldlen; i++)
    {
        result[j++] = hexconvtab[old[i] >> 4];
        result[j++] = hexconvtab[old[i] & 15];
    }
    result[j] = '\0';
    return result;
}

char * cdc_auth_srt(char * user, char * password)
{
    unsigned char sha1pass[20];
    char * str;
    str = (char*) malloc(42 + strlen(user) * 2);

    unsigned char *password_u;
    unsigned char *user_u;
    password_u = (unsigned char*) malloc(strlen(password));
    user_u =  (unsigned char*) malloc(strlen(user));
    memcpy((void*)password_u, (void*)password, strlen(password));
    memcpy((void*)user_u, (void*)user, strlen(user));

    SHA1(password_u, strlen(password), sha1pass);

    //char * sha1pass_hex = (char *) "454ac34c2999aacfebc6bf5fe9fa1db9b596f625";

    char * sha1pass_hex = bin2hex(sha1pass, 20);
    printf("password %s, len %lu, password sha1: %s\n", password, strlen(password), sha1pass_hex);


    char * user_hex = bin2hex(user_u, strlen(user));
    char * clmn_hex = bin2hex((unsigned char*)":", 1);

    sprintf(str, "%s%s%s", user_hex, clmn_hex, sha1pass_hex);

    free(clmn_hex);
    free(user_hex);
    free(sha1pass_hex);
    free(user_u);
    free(password_u);

    printf("%s\n", str);
    return str;

}

int setnonblocking(int sock)
{
    int opts;
    opts = fcntl(sock, F_GETFL);
    if (opts < 0)
    {
        return -1;
    }
    opts = (opts | O_NONBLOCK);
    if (fcntl(sock, F_SETFL, opts) < 0)
    {
        return -1;
    }
    return 0;
}


int get_x_fl_from_json(char * line, long long int * x1, long long int * fl)
{
    json_t *root;
    json_error_t error;

    root = json_loads( line, 0, &error );
    if ( !root )
    {
        fprintf( stderr, "error: on line %d: %s\n", error.line, error.text );
        return 1;
    }

    json_t * x_json = json_object_get(root, "x1");
    if (x_json == NULL)
    {
        return 1;
    }
    if ( !json_is_integer(x_json) )
    {
        printf("x1 is not int, type is %d\n", json_typeof(x_json));
        return 1;
    }

    *x1 = json_integer_value(x_json);
    json_t * fl_json = json_object_get(root, "fl");
    if (fl_json == NULL)
    {
        return 1;
    }
    if ( !json_is_integer(fl_json) )
    {
        printf("fl is not int\n");
        return 1;
    }

    *fl = json_integer_value(fl_json);
    json_decref(x_json);
    json_decref(fl_json);
    json_decref(root);
}