package constants

import "time"

const (
	// ObservationWindow defines how far back observations are queried.
	ObservationWindow = 30 * time.Minute

	// DefaultObservationCount defines the default number of observations returned.
	DefaultObservationCount = 5

	// MaxObservationCount defines the max observation count accepted from query params.
	MaxObservationCount = 100

	// ForecastQueryLimit defines the max forecast periods returned.
	ForecastQueryLimit = 5

	// UnitSystemUS identifies the US customary unit system.
	UnitSystemUS = "us"

	// UnitSystemMetric identifies the metric unit system.
	UnitSystemMetric = "metric"

	// DefaultOutputUnitSystem is the API's default output unit system for forecast/current conditions.
	DefaultOutputUnitSystem = UnitSystemUS

	// DefaultHTTPAddr is the default listen address for the HTTP server.
	DefaultHTTPAddr = ":8080"
)

var SupportedTimestampLayouts = []string{
	time.RFC3339Nano,
	time.RFC3339,
}

const (
	TempFahrenheitPrecision = 1
	WindMphPrecision        = 1

	KmhPerMph = 1.609344
	MphPerKmh = 1 / KmhPerMph
)