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#include "reverse_geocoder.hpp"
#include "search/mwm_context.hpp"
#include "indexer/data_source.hpp"
#include "indexer/feature.hpp"
#include "indexer/feature_algo.hpp"
#include "indexer/ftypes_matcher.hpp"
#include "indexer/scales.hpp"
#include "indexer/search_string_utils.hpp"
#include "base/stl_helpers.hpp"
#include "std/limits.hpp"
namespace search
{
namespace
{
size_t constexpr kSimilarityThresholdPercent = 10;
int constexpr kQueryScale = scales::GetUpperScale();
/// Max number of tries (nearest houses with housenumber) to check when getting point address.
size_t constexpr kMaxNumTriesToApproxAddress = 10;
} // namespace
ReverseGeocoder::ReverseGeocoder(DataSourceBase const & dataSource) : m_dataSource(dataSource) {}
void ReverseGeocoder::GetNearbyStreets(MwmSet::MwmId const & id, m2::PointD const & center,
vector<Street> & streets) const
{
m2::RectD const rect = GetLookupRect(center, kLookupRadiusM);
auto const addStreet = [&](FeatureType & ft)
{
if (ft.GetFeatureType() != feature::GEOM_LINE ||
!ftypes::IsStreetChecker::Instance()(ft))
{
return;
}
string name;
if (!ft.GetName(StringUtf8Multilang::kDefaultCode, name))
return;
ASSERT(!name.empty(), ());
streets.emplace_back(ft.GetID(), feature::GetMinDistanceMeters(ft, center), name);
};
MwmSet::MwmHandle mwmHandle = m_dataSource.GetMwmHandleById(id);
if (mwmHandle.IsAlive())
{
search::MwmContext(move(mwmHandle)).ForEachFeature(rect, addStreet);
sort(streets.begin(), streets.end(), my::LessBy(&Street::m_distanceMeters));
}
}
void ReverseGeocoder::GetNearbyStreets(FeatureType & ft, vector<Street> & streets) const
{
ASSERT(ft.GetID().IsValid(), ());
GetNearbyStreets(ft.GetID().m_mwmId, feature::GetCenter(ft), streets);
}
// static
size_t ReverseGeocoder::GetMatchedStreetIndex(strings::UniString const & keyName,
vector<Street> const & streets)
{
// Find the exact match or the best match in kSimilarityTresholdPercent limit.
size_t const count = streets.size();
size_t result = count;
size_t minPercent = kSimilarityThresholdPercent + 1;
for (size_t i = 0; i < count; ++i)
{
strings::UniString const actual = GetStreetNameAsKey(streets[i].m_name);
size_t const editDistance = strings::EditDistance(keyName.begin(), keyName.end(),
actual.begin(), actual.end());
if (editDistance == 0)
return i;
if (actual.empty())
continue;
size_t const percent = editDistance * 100 / actual.size();
if (percent < minPercent)
{
result = i;
minPercent = percent;
}
}
return result;
}
pair<vector<ReverseGeocoder::Street>, uint32_t>
ReverseGeocoder::GetNearbyFeatureStreets(FeatureType & ft) const
{
pair<vector<ReverseGeocoder::Street>, uint32_t> result;
GetNearbyStreets(ft, result.first);
HouseTable table(m_dataSource);
if (!table.Get(ft.GetID(), result.second))
result.second = numeric_limits<uint32_t>::max();
return result;
}
void ReverseGeocoder::GetNearbyAddress(m2::PointD const & center, Address & addr) const
{
vector<Building> buildings;
GetNearbyBuildings(center, buildings);
HouseTable table(m_dataSource);
size_t triesCount = 0;
for (auto const & b : buildings)
{
// It's quite enough to analize nearest kMaxNumTriesToApproxAddress houses for the exact nearby address.
// When we can't guarantee suitable address for the point with distant houses.
if (GetNearbyAddress(table, b, addr) || (++triesCount == kMaxNumTriesToApproxAddress))
break;
}
}
bool ReverseGeocoder::GetExactAddress(FeatureType const & ft, Address & addr) const
{
if (ft.GetHouseNumber().empty())
return false;
HouseTable table(m_dataSource);
return GetNearbyAddress(table, FromFeature(ft, 0.0 /* distMeters */), addr);
}
bool ReverseGeocoder::GetNearbyAddress(HouseTable & table, Building const & bld,
Address & addr) const
{
string street;
if (osm::Editor::Instance().GetEditedFeatureStreet(bld.m_id, street))
{
addr.m_building = bld;
addr.m_street.m_name = street;
return true;
}
uint32_t ind;
if (!table.Get(bld.m_id, ind))
return false;
vector<Street> streets;
GetNearbyStreets(bld.m_id.m_mwmId, bld.m_center, streets);
if (ind < streets.size())
{
addr.m_building = bld;
addr.m_street = streets[ind];
return true;
}
else
{
LOG(LWARNING, ("Out of bound street index", ind, "for", bld.m_id));
return false;
}
}
void ReverseGeocoder::GetNearbyBuildings(m2::PointD const & center, vector<Building> & buildings) const
{
m2::RectD const rect = GetLookupRect(center, kLookupRadiusM);
auto const addBuilding = [&](FeatureType & ft)
{
if (!ft.GetHouseNumber().empty())
buildings.push_back(FromFeature(ft, feature::GetMinDistanceMeters(ft, center)));
};
m_dataSource.ForEachInRect(addBuilding, rect, kQueryScale);
sort(buildings.begin(), buildings.end(), my::LessBy(&Building::m_distanceMeters));
}
// static
ReverseGeocoder::Building ReverseGeocoder::FromFeature(FeatureType const & ft, double distMeters)
{
return { ft.GetID(), distMeters, ft.GetHouseNumber(), feature::GetCenter(ft) };
}
// static
m2::RectD ReverseGeocoder::GetLookupRect(m2::PointD const & center, double radiusM)
{
return MercatorBounds::RectByCenterXYAndSizeInMeters(center, radiusM);
}
bool ReverseGeocoder::HouseTable::Get(FeatureID const & fid, uint32_t & streetIndex)
{
if (!m_table || m_handle.GetId() != fid.m_mwmId)
{
m_handle = m_dataSource.GetMwmHandleById(fid.m_mwmId);
if (!m_handle.IsAlive())
{
LOG(LWARNING, ("MWM", fid, "is dead"));
return false;
}
m_table = search::HouseToStreetTable::Load(*m_handle.GetValue<MwmValue>());
}
return m_table->Get(fid.m_index, streetIndex);
}
string DebugPrint(ReverseGeocoder::Object const & obj)
{
return obj.m_name;
}
string DebugPrint(ReverseGeocoder::Address const & addr)
{
return "{ " + DebugPrint(addr.m_building) + ", " + DebugPrint(addr.m_street) + " }";
}
} // namespace search
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