#define CONFIG_LOAD_SUCCESS 0
#define CONFIG_LOAD_FAILED -1

#define CONFIG_PARSE_SUCCESS 0
#define CONFIG_PARSE_FAILED -1

int parse_config( server_config_t *svconfig, ssize_t cfg_len ){
    if ( svconfig->config_contents == NULL || cfg_len <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->config_parsed = cJSON_ParseWithLength( svconfig->config_contents, (size_t)cfg_len );
    if ( svconfig->config_parsed == NULL )
        return CONFIG_PARSE_FAILED;
    svconfig->log_enabled = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "log_enabled" );
    if ( svconfig->log_enabled == NULL || (int64_t)strlen(svconfig->log_enabled->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->log_file = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "log_file" );
    if ( svconfig->log_file == NULL || (int64_t)strlen(svconfig->log_file->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->bind_address = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "bind_address" );
    if ( svconfig->bind_address == NULL || (int64_t)strlen(svconfig->bind_address->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->bind_port = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "bind_port" );
    if ( svconfig->bind_port == NULL || (int64_t)strlen(svconfig->bind_port->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->server_password = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "server_password" );
    if ( svconfig->server_password == NULL || (int64_t)strlen(svconfig->server_password->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->cert_file = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "cert_file" );
    if ( svconfig->cert_file == NULL || (int64_t)strlen(svconfig->cert_file->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->cert_key_file = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "cert_key_file" );
    if ( svconfig->cert_key_file == NULL || (int64_t)strlen(svconfig->cert_key_file->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    svconfig->webhooks_file = cJSON_GetObjectItemCaseSensitive( svconfig->config_parsed, "webhooks_file" );
    if ( svconfig->webhooks_file == NULL || (int64_t)strlen(svconfig->webhooks_file->valuestring) <= 0 )
        return CONFIG_PARSE_FAILED;
    return CONFIG_PARSE_SUCCESS;
}

int load_config( char *config_file_name, server_config_t *sv_config ){
    if ( config_file_name == NULL || (int64_t)strlen(config_file_name) <= 0 || strcmp((const char*)config_file_name, "") == 0 )
        return CONFIG_LOAD_FAILED;
    FILE *cfg_file = fopen( config_file_name, "r" );
    if ( cfg_file == NULL )
        return CONFIG_LOAD_FAILED;
    if ( fseek(cfg_file, 0, SEEK_END) == -1 ){
        fclose( cfg_file );
        return CONFIG_LOAD_FAILED;
    }
    ssize_t cfg_file_size = (ssize_t)ftell( cfg_file );
    if ( cfg_file_size <= 0 ){
        rewind( cfg_file );
        fclose( cfg_file );
        return CONFIG_LOAD_FAILED;
    }
    rewind( cfg_file );
    sv_config->config_contents = (char*)calloc( (size_t)cfg_file_size, sizeof(char) );
    if ( sv_config->config_contents == NULL ){
        fclose( cfg_file );
        cfg_file_size = 0;
        return CONFIG_LOAD_FAILED;
    }
    if ( (int64_t)fread(sv_config->config_contents, sizeof(char), (size_t)(cfg_file_size * sizeof(char)), cfg_file) == (int64_t)-1 ){
        free( sv_config->config_contents );
        sv_config->config_contents = NULL;
        fclose( cfg_file );
        cfg_file_size = 0;
        return CONFIG_LOAD_FAILED;
    }
    if ( parse_config(sv_config, cfg_file_size) != CONFIG_PARSE_SUCCESS ){
        free( sv_config->config_contents );
        sv_config->config_contents = NULL;
        return CONFIG_LOAD_FAILED;
    }
    free( sv_config->config_contents );
    sv_config->config_contents = NULL;
    return CONFIG_LOAD_SUCCESS;
}