#pragma once

#include "drape_frontend/tile_key.hpp"

#include "std/function.hpp"
#include "std/set.hpp"

namespace df
{

using TTilesCollection = set<TileKey>;

struct CoverageResult
{
  int m_minTileX = 0;
  int m_maxTileX = 0;
  int m_minTileY = 0;
  int m_maxTileY = 0;
};

/// This function determines the tiles coverage in specified zoom level.
/// Each tile can be processed in processTile callback.
CoverageResult CalcTilesCoverage(m2::RectD const & rect, int targetZoom,
                                 function<void(int, int)> const & processTile);

/// This function checks if tileKey1 and tileKey2 are neighbours
bool IsNeighbours(TileKey const & tileKey1, TileKey const & tileKey2);

/// This function performs clipping by maximum zoom label available for map data.
int ClipTileZoomByMaxDataZoom(int zoom);

/// This function returns tile key by point on specific zoom level.
TileKey GetTileKeyByPoint(m2::PointD const & pt, int zoom);

} // namespace df