db

type ArcFlag uint64

type CoordBounds struct {
	Latitude  MinMax
	Longitude MinMax
}

type DB interface {
	AddVertices(ctx context.Context, vertices []Vertex, generation Generation) error
	AddEdges(ctx context.Context, edges []Edge, generation Generation) error
	AddArcFlags(ctx context.Context, edgeIds []EdgeId, generation Generation) error

	GetVertexIds(ctx context.Context, id RegionId, generation Generation) ([]VertexId, error)
	GetEdgesFrom(ctx context.Context, from []VertexId, generation Generation) (map[VertexId][]Edge, error)
	GetArcFlags(ctx context.Context, edgeIds []EdgeId, generation Generation) ([]ArcFlag, error)
	GetVertexCount(ctx context.Context, coordsBetween CoordBounds, generation Generation) (int64, error)
	GetVertexCountOnVerticalSegment(ctx context.Context, latitude MinMax, longtitude float64, generation Generation) (int64, error)
	GetVertexCountOnHorizontalSegment(ctx context.Context, latitude float64, longtitude MinMax, generation Generation) (int64, error)
	GetVertexRegion(ctx context.Context, id VertexId, generation Generation) (RegionId, error)
	GetEdgeToRegionMapping(ctx context.Context, regionId RegionId, generation Generation) (map[EdgeId]RegionId, error)
	GetCurrentGeneration(ctx context.Context) (Generation, error)
	GetNextGeneration(ctx context.Context) (Generation, error)
	GetActiveGeneration(ctx context.Context) (Generation, error)

	SetFlag(ctx context.Context, edgeIds []EdgeId, region RegionId, generation Generation) error
	SetRegion(ctx context.Context, coordsBetween CoordBounds, region RegionId, generation Generation) (rowsAffected int64, err error)
	SetCurrentGeneration(ctx context.Context, generation Generation) error
	SetNextGeneration(ctx context.Context, generation Generation) error
	SetActiveGeneration(ctx context.Context, generation Generation) error
}

type Edge = api.Edge

type EdgeId = api.EdgeId

type Generation = api.Generation

type MinMax struct {
	Min float64 // Inclusive
	Max float64 // Exclusive
}

type RegionId = uint16

type Vertex = api.Vertex

type VertexId = api.VertexId