LastfmService::Result LastfmService::fetch(Args &args)
{
Result result;
std::string url = baseURL;
url += methodName();
for (Args::const_iterator it = args.begin(); it != args.end(); ++it)
{
url += "&";
url += it->first;
url += "=";
url += Curl::escape(it->second);
}
std::string data;
CURLcode code = Curl::perform(data, url);
if (code != CURLE_OK)
{
result.second = curl_easy_strerror(code);
return result;
}
if (actionFailed(data))
{
StripHtmlTags(data);
result.second = data;
return result;
}
if (!parse(data))
{
// if relevant part of data was not found and one of arguments
// was language, try to fetch it again without that parameter.
// otherwise just report failure.
Args::iterator lang = args.find("lang");
if (lang != args.end())
{
args.erase(lang);
return fetch(args);
}
else
{
// parse should change data to error msg, if it fails
result.second = data;
return result;
}
}
result.first = true;
result.second = data;
return result;
}
bool ArtistInfo::checkArgs(const Args &args)
{
return args.find("artist") != args.end();
}