161 lines
2.7 KiB
Go
161 lines
2.7 KiB
Go
package maps
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import (
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"errors"
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"strings"
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olc "github.com/google/open-location-code/go"
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"github.com/photoprism/photoprism/internal/maps/osm"
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)
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// Photo location
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type Location struct {
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ID string `gorm:"primary_key"`
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LocLat float64
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LocLng float64
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LocTitle string
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LocRegion string
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LocCity string
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LocSuburb string
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LocState string
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LocCountryCode string
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LocLabel string
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LocSource string
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}
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type LocationSource interface {
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Latitude() float64
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Longitude() float64
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Title() string
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City() string
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Suburb() string
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State() string
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CountryCode() string
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Label() string
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Source() string
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}
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func NewLocation (lat, lng float64) *Location {
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id := olc.Encode(lat, lng, 11)
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result := &Location{
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ID: id,
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LocLat: lat,
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LocLng: lng,
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}
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return result
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}
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func (l *Location) Query() error {
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o, err := osm.FindLocation(l.LocLat, l.LocLng)
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if err != nil {
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return err
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}
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return l.Assign(o)
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}
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func (l *Location) Assign(s LocationSource) error {
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l.LocSource = s.Source()
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if l.LocLat == 0 { l.LocLat = s.Latitude() }
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if l.LocLng == 0 { l.LocLng = s.Longitude() }
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if l.Unknown() {
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l.LocLabel = "unknown"
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return errors.New("maps: unknown location")
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}
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if l.ID == "" { l.ID = olc.Encode(l.LocLat, l.LocLng, 11) }
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l.LocTitle = s.Title()
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l.LocCity = s.City()
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l.LocSuburb = s.Suburb()
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l.LocState = s.State()
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l.LocCountryCode = s.CountryCode()
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l.LocLabel = s.Label()
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l.LocRegion = l.region()
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return nil
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}
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func (l *Location) Unknown() bool {
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if l.LocLng == 0.0 && l.LocLat == 0.0 {
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return true
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}
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return false
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}
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func (l *Location) region() string {
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if l.Unknown() {
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return "Unknown"
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}
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var countryName = l.CountryName()
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var loc []string
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shortCountry := len([]rune(countryName)) <= 20
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shortCity := len([]rune(l.LocCity)) <= 20
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if shortCity && l.LocCity != "" {
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loc = append(loc, l.LocCity)
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}
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if shortCountry && l.LocState != "" && l.LocCity != l.LocState {
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loc = append(loc, l.LocState)
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}
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if countryName != "" {
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loc = append(loc, countryName)
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}
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return strings.Join(loc[:], ", ")
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}
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func (l Location) Latitude() float64 {
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return l.LocLat
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}
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func (l Location) Longitude() float64 {
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return l.LocLng
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}
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func (l Location) Title() string {
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return l.LocTitle
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}
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func (l Location) City() string {
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return l.LocCity
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}
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func (l Location) Suburb() string {
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return l.LocSuburb
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}
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func (l Location) State() string {
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return l.LocState
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}
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func (l Location) Label() string {
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return l.LocLabel
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}
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func (l Location) Source() string {
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return l.LocSource
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}
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func (l Location) Region() string {
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return l.LocRegion
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}
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func (l Location) CountryCode() string {
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return l.LocCountryCode
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}
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func (l Location) CountryName() string {
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return CountryNames[l.LocCountryCode]
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}
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