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#include "routing/online_cross_fetcher.hpp"
#include "platform/http_request.hpp"
#include "platform/platform.hpp"
#include "base/logging.hpp"
#include "base/string_utils.hpp"
#include "3party/jansson/myjansson.hpp"
#include "geometry/mercator.hpp"
using namespace std;
namespace
{
inline string LatLonToURLArgs(ms::LatLon const & point)
{
return strings::to_string(point.lat) + ','+ strings::to_string(point.lon);
}
} // namespace
namespace routing
{
bool ParseResponse(string const & serverResponse, vector<m2::PointD> & outPoints)
{
try
{
base::Json parser(serverResponse.c_str());
json_t const * countries = json_object_get(parser.get(), "used_mwms");
size_t const pointsCount = json_array_size(countries);
for (size_t i = 0; i < pointsCount; ++i)
{
json_t * pointArray = json_array_get(countries, i);
outPoints.push_back({json_number_value(json_array_get(pointArray, 0)),
json_number_value(json_array_get(pointArray, 1))});
}
return pointsCount > 0;
}
catch (base::Json::Exception const & exception)
{
LOG(LWARNING, ("Can't parse server response:", exception.what()));
LOG(LWARNING, ("Response body:", serverResponse));
return false;
}
}
string GenerateOnlineRequest(string const & serverURL, ms::LatLon const & startPoint,
ms::LatLon const & finalPoint)
{
return serverURL + "/mapsme?loc=" + LatLonToURLArgs(startPoint) + "&loc=" +
LatLonToURLArgs(finalPoint);
}
OnlineCrossFetcher::OnlineCrossFetcher(TCountryFileFn const & countryFileFn,
string const & serverURL, Checkpoints const & checkpoints)
: m_countryFileFn(countryFileFn), m_serverURL(serverURL), m_checkpoints(checkpoints)
{
CHECK(m_countryFileFn, ());
}
void OnlineCrossFetcher::Do()
{
m_mwmPoints.clear();
for (size_t i = 0; i < m_checkpoints.GetNumSubroutes(); ++i)
{
m2::PointD const & pointFrom = m_checkpoints.GetPoint(i);
m2::PointD const & pointTo = m_checkpoints.GetPoint(i + 1);
string const mwmFrom = m_countryFileFn(pointFrom);
string const mwmTo = m_countryFileFn(pointTo);
if (mwmFrom == mwmTo)
continue;
string const url = GenerateOnlineRequest(m_serverURL, MercatorBounds::ToLatLon(pointFrom),
MercatorBounds::ToLatLon(pointTo));
platform::HttpClient request(url);
request.SetRawHeader("User-Agent", GetPlatform().GetAppUserAgent());
LOG(LINFO, ("Check mwms by URL: ", url));
if (request.RunHttpRequest() && request.ErrorCode() == 200 && !request.WasRedirected())
ParseResponse(request.ServerResponse(), m_mwmPoints);
else
LOG(LWARNING, ("Can't get OSRM server response. Code: ", request.ErrorCode()));
}
}
} // namespace routing
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