58 lines
1.7 KiB
Go
58 lines
1.7 KiB
Go
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package platform
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import (
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"errors"
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"fmt"
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"github.com/Gleipnir-Technology/nidus-sync/db/enums"
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"github.com/Gleipnir-Technology/nidus-sync/h3utils"
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"github.com/rs/zerolog/log"
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"github.com/uber/h3-go/v4"
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)
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type LatLng struct {
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Latitude *float64
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Longitude *float64
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MapZoom float32
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AccuracyValue float64
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AccuracyType enums.PublicreportAccuracytype
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}
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func (l LatLng) Resolution() uint {
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switch l.AccuracyType {
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// These accuracy_type strings come from the Mapbox Geocoding API definition and
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// are far from scientific
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case enums.PublicreportAccuracytypeRooftop:
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return 14
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case enums.PublicreportAccuracytypeParcel:
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return 13
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case enums.PublicreportAccuracytypePoint:
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return 13
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case enums.PublicreportAccuracytypeInterpolated:
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return 12
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case enums.PublicreportAccuracytypeApproximate:
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return 11
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case enums.PublicreportAccuracytypeIntersection:
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return 10
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// This is a special indicator that we got our location from the browser measurements
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case enums.PublicreportAccuracytypeBrowser:
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return uint(h3utils.MeterAccuracyToH3Resolution(l.AccuracyValue))
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default:
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log.Warn().Str("accuracy-type", string(l.AccuracyType)).Msg("unrecognized accuracy type, this indicates either a weird client or misbehaving web page. Defaulting to resolution 13")
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return 13
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}
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}
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func (l LatLng) H3Cell() (*h3.Cell, error) {
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if l.Longitude == nil || l.Latitude == nil {
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return nil, errors.New("nil lat/lng")
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}
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result, err := h3utils.GetCell(*l.Longitude, *l.Latitude, int(l.Resolution()))
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return &result, err
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}
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func (l LatLng) GeometryQuery() (string, error) {
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if l.Longitude == nil || l.Latitude == nil {
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return "", errors.New("nil lat/lng")
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}
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return fmt.Sprintf("ST_Point(%f, %f, 4326)", *l.Longitude, *l.Latitude), nil
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}
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