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#pragma once
#include "traffic/speed_groups.hpp"
#include "indexer/mwm_set.hpp"
#include "std/cstdint.hpp"
#include "std/map.hpp"
#include "std/shared_ptr.hpp"
#include "std/vector.hpp"
namespace traffic
{
// This class is responsible for providing the real-time
// information about road traffic for one mwm file.
class TrafficInfo
{
public:
enum class Availability
{
IsAvailable,
NoData,
ExpiredData,
ExpiredApp,
Unknown
};
struct RoadSegmentId
{
// m_dir can be kForwardDirection or kReverseDirection.
static int constexpr kForwardDirection = 0;
static int constexpr kReverseDirection = 1;
RoadSegmentId();
RoadSegmentId(uint32_t fid, uint16_t idx, uint8_t dir);
bool operator==(RoadSegmentId const & o) const
{
return m_fid == o.m_fid && m_idx == o.m_idx && m_dir == o.m_dir;
}
bool operator<(RoadSegmentId const & o) const
{
if (m_fid != o.m_fid)
return m_fid < o.m_fid;
if (m_idx != o.m_idx)
return m_idx < o.m_idx;
return m_dir < o.m_dir;
}
// The ordinal number of feature this segment belongs to.
uint32_t m_fid;
// The ordinal number of this segment in the list of
// its feature's segments.
uint16_t m_idx : 15;
// The direction of the segment.
uint8_t m_dir : 1;
};
// todo(@m) unordered_map?
using Coloring = map<RoadSegmentId, SpeedGroup>;
TrafficInfo() = default;
TrafficInfo(MwmSet::MwmId const & mwmId, int64_t currentDataVersion);
void SetColoringForTesting(Coloring & coloring) { m_coloring = coloring; }
// Fetches the latest traffic data from the server and updates the coloring.
// Construct the url by passing an MwmId.
// *NOTE* This method must not be called on the UI thread.
bool ReceiveTrafficData();
// Returns the latest known speed group by a feature segment's id.
SpeedGroup GetSpeedGroup(RoadSegmentId const & id) const;
MwmSet::MwmId const & GetMwmId() const { return m_mwmId; }
Coloring const & GetColoring() const { return m_coloring; }
Availability GetAvailability() const { return m_availability; }
static void SerializeTrafficData(Coloring const & coloring, vector<uint8_t> & result);
static void DeserializeTrafficData(vector<uint8_t> const & data, Coloring & coloring);
private:
// The mapping from feature segments to speed groups (see speed_groups.hpp).
Coloring m_coloring;
MwmSet::MwmId m_mwmId;
Availability m_availability = Availability::Unknown;
int64_t m_currentDataVersion = 0;
};
class RoutingObserver
{
public:
virtual ~RoutingObserver() = default;
virtual void OnTrafficEnabled(bool enable) = 0;
virtual void OnTrafficInfoAdded(traffic::TrafficInfo const & info) = 0;
virtual void OnTrafficInfoRemoved(MwmSet::MwmId const & mwmId) = 0;
};
class TrafficInfoGetter
{
public:
virtual ~TrafficInfoGetter() = default;
virtual shared_ptr<traffic::TrafficInfo> GetTrafficInfo(MwmSet::MwmId const & mwmId) const = 0;
};
} // namespace traffic
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