Files
weatherapi/internal/adapters/inbound/httpapi/presenter/observation.go
Eric Rakestraw 6806de3c0a
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Added support for rounding of values by default in API responses
2026-03-20 11:30:11 -05:00

77 lines
4.7 KiB
Go

// observation.go presents observation payloads in metric and US shapes.
// Layer: adapters/inbound/httpapi/presenter observation payload mapping.
package presenter
import (
"time"
"gitea.maximumdirect.net/ejr/weatherfeeder/model"
)
// WeatherObservationUS is the US-customary response shape for observations.
type WeatherObservationUS struct {
StationID string `json:"stationId,omitempty" xml:"stationId,omitempty"`
StationName string `json:"stationName,omitempty" xml:"stationName,omitempty"`
Timestamp time.Time `json:"timestamp" xml:"timestamp"`
ConditionCode model.WMOCode `json:"conditionCode" xml:"conditionCode"`
IsDay *bool `json:"isDay,omitempty" xml:"isDay,omitempty"`
TextDescription string `json:"textDescription,omitempty" xml:"textDescription,omitempty"`
TemperatureF *float64 `json:"temperatureF,omitempty" xml:"temperatureF,omitempty"`
DewpointF *float64 `json:"dewpointF,omitempty" xml:"dewpointF,omitempty"`
WindDirectionDegrees *float64 `json:"windDirectionDegrees,omitempty" xml:"windDirectionDegrees,omitempty"`
WindSpeedMph *float64 `json:"windSpeedMph,omitempty" xml:"windSpeedMph,omitempty"`
WindGustMph *float64 `json:"windGustMph,omitempty" xml:"windGustMph,omitempty"`
BarometricPressureInHg *float64 `json:"barometricPressureInHg,omitempty" xml:"barometricPressureInHg,omitempty"`
VisibilityMiles *float64 `json:"visibilityMiles,omitempty" xml:"visibilityMiles,omitempty"`
RelativeHumidityPercent *float64 `json:"relativeHumidityPercent,omitempty" xml:"relativeHumidityPercent,omitempty"`
ApparentTemperatureF *float64 `json:"apparentTemperatureF,omitempty" xml:"apparentTemperatureF,omitempty"`
PresentWeather []model.PresentWeather `json:"presentWeather,omitempty" xml:"presentWeather,omitempty"`
}
func ObservationPayload(obs *model.WeatherObservation, units Units, precision int) any {
if obs == nil {
return nil
}
if units == UnitsUS {
converted := WeatherObservationUS{
StationID: obs.StationID,
StationName: obs.StationName,
Timestamp: obs.Timestamp,
ConditionCode: obs.ConditionCode,
IsDay: copyBoolPtr(obs.IsDay),
TextDescription: obs.TextDescription,
TemperatureF: roundedPtr(celsiusToFahrenheitPtr(obs.TemperatureC), precision),
DewpointF: roundedPtr(celsiusToFahrenheitPtr(obs.DewpointC), precision),
WindDirectionDegrees: roundedPtr(copyFloat64Ptr(obs.WindDirectionDegrees), precision),
WindSpeedMph: roundedPtr(scalePtr(obs.WindSpeedKmh, kmhToMphFactor), precision),
WindGustMph: roundedPtr(scalePtr(obs.WindGustKmh, kmhToMphFactor), precision),
BarometricPressureInHg: roundedPtr(scalePtr(obs.BarometricPressurePa, paToInHgFactor), precision),
VisibilityMiles: roundedPtr(scalePtr(obs.VisibilityMeters, metersToMilesFactor), precision),
RelativeHumidityPercent: roundedPtr(copyFloat64Ptr(obs.RelativeHumidityPercent), precision),
ApparentTemperatureF: roundedPtr(celsiusToFahrenheitPtr(obs.ApparentTemperatureC), precision),
PresentWeather: append([]model.PresentWeather(nil), obs.PresentWeather...),
}
return converted
}
rounded := model.WeatherObservation{
StationID: obs.StationID,
StationName: obs.StationName,
Timestamp: obs.Timestamp,
ConditionCode: obs.ConditionCode,
IsDay: copyBoolPtr(obs.IsDay),
TextDescription: obs.TextDescription,
TemperatureC: roundedPtr(copyFloat64Ptr(obs.TemperatureC), precision),
DewpointC: roundedPtr(copyFloat64Ptr(obs.DewpointC), precision),
WindDirectionDegrees: roundedPtr(copyFloat64Ptr(obs.WindDirectionDegrees), precision),
WindSpeedKmh: roundedPtr(copyFloat64Ptr(obs.WindSpeedKmh), precision),
WindGustKmh: roundedPtr(copyFloat64Ptr(obs.WindGustKmh), precision),
BarometricPressurePa: roundedPtr(copyFloat64Ptr(obs.BarometricPressurePa), precision),
VisibilityMeters: roundedPtr(copyFloat64Ptr(obs.VisibilityMeters), precision),
RelativeHumidityPercent: roundedPtr(copyFloat64Ptr(obs.RelativeHumidityPercent), precision),
ApparentTemperatureC: roundedPtr(copyFloat64Ptr(obs.ApparentTemperatureC), precision),
PresentWeather: append([]model.PresentWeather(nil), obs.PresentWeather...),
}
return &rounded
}