#include "talkingq_wss.h"
#include <string.h>

int talkingq_is_legacy_ws_url(const char *url)
{
    return url && (!strcmp(url, "ws://101.35.224.118:8080") ||
                   !strcmp(url, "ws://101.35.224.118:8080/ws") ||
                   !strcmp(url, "ws://api.talkingq.com:8080") ||
                   !strcmp(url, "ws://175.24.73.253:80"));
}

int talkingq_parse_wss_url(const char *url, char *host, size_t host_size,
                          int *port, char *path, size_t path_size)
{
    const char *begin, *end, *colon, *cursor, *resource;
    size_t length;
    unsigned int value = 0;
    if (!url || !host || !port || !path || strncmp(url, "wss://", 6))
        return -1;
    begin = url + 6;
    end = strchr(begin, '/');
    if (!end) end = begin + strlen(begin);
    colon = memchr(begin, ':', (size_t)(end - begin));
    length = (size_t)((colon ? colon : end) - begin);
    if (!length || length >= host_size) return -1;
    for (cursor = begin; cursor < begin + length; ++cursor) {
        char c = *cursor;
        if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
              (c >= '0' && c <= '9') || c == '.' || c == '-')) return -1;
    }
    if (colon) {
        if (colon + 1 == end) return -1;
        for (cursor = colon + 1; cursor < end; ++cursor) {
            if (*cursor < '0' || *cursor > '9') return -1;
            value = value * 10 + (unsigned int)(*cursor - '0');
            if (value > 65535) return -1;
        }
        if (!value) return -1;
    } else {
        value = 443;
    }
    resource = *end ? end : "/ws";
    if (strlen(resource) >= path_size) return -1;
    for (cursor = resource; *cursor; ++cursor) {
        if ((unsigned char)*cursor <= 32 || *cursor == '#' ||
            (unsigned char)*cursor >= 127) return -1;
    }
    memcpy(host, begin, length);
    host[length] = '\0';
    strcpy(path, resource);
    *port = (int)value;
    return 0;
}