photoprism/internal/entity/photo_location.go
Michael Mayer e3f614bc23 Backend: Update photo title when location or labels change
Signed-off-by: Michael Mayer <michael@liquidbytes.net>
2020-04-16 20:57:00 +02:00

121 lines
3.6 KiB
Go

package entity
import (
"errors"
"fmt"
"strings"
"github.com/jinzhu/gorm"
"github.com/photoprism/photoprism/internal/classify"
"github.com/photoprism/photoprism/internal/event"
"github.com/photoprism/photoprism/pkg/txt"
)
// IndexLocation updates location and labels based on latitude and longitude.
func (m *Photo) IndexLocation(db *gorm.DB, geoApi string, labels classify.Labels) ([]string, classify.Labels) {
var location = NewLocation(m.PhotoLat, m.PhotoLng)
location.Lock()
defer location.Unlock()
var keywords []string
err := location.Find(db, geoApi)
if err == nil {
if location.Place.New {
event.Publish("count.places", event.Data{
"count": 1,
})
}
m.Location = location
m.LocationID = location.ID
m.Place = location.Place
m.PlaceID = location.PlaceID
m.LocationEstimated = false
country := NewCountry(location.CountryCode(), location.CountryName()).FirstOrCreate(db)
if country.New {
event.Publish("count.countries", event.Data{
"count": 1,
})
}
locCategory := location.Category()
keywords = append(keywords, location.Keywords()...)
// Append category from reverse location lookup
if locCategory != "" {
labels = append(labels, classify.LocationLabel(locCategory, 0, -1))
}
if err := m.UpdateTitle(labels); err != nil {
log.Warn(err)
}
} else {
log.Warn(err)
m.Place = UnknownPlace
m.PlaceID = UnknownPlace.ID
}
if m.Place != nil && (!m.ModifiedLocation || m.PhotoCountry == "" || m.PhotoCountry == "zz") {
m.PhotoCountry = m.Place.LocCountry
}
return keywords, labels
}
// UpdateTitle updated the photo title based on location and labels.
func (m *Photo) UpdateTitle(labels classify.Labels) error {
if m.ModifiedTitle && m.HasTitle() {
return errors.New("photo: won't update title, was modified")
}
hasLocation := m.Location != nil && m.Location.Place != nil
if hasLocation {
loc := m.Location
if title := labels.Title(loc.Name()); title != "" { // TODO: User defined title format
log.Infof("photo: using label \"%s\" to create photo title", title)
if loc.NoCity() || loc.LongCity() || loc.CityContains(title) {
m.PhotoTitle = fmt.Sprintf("%s / %s / %s", txt.Title(title), loc.CountryName(), m.TakenAt.Format("2006"))
} else {
m.PhotoTitle = fmt.Sprintf("%s / %s / %s", txt.Title(title), loc.City(), m.TakenAt.Format("2006"))
}
} else if loc.Name() != "" && loc.City() != "" {
if len(loc.Name()) > 45 {
m.PhotoTitle = txt.Title(loc.Name())
} else if len(loc.Name()) > 20 || len(loc.City()) > 16 || strings.Contains(loc.Name(), loc.City()) {
m.PhotoTitle = fmt.Sprintf("%s / %s", loc.Name(), m.TakenAt.Format("2006"))
} else {
m.PhotoTitle = fmt.Sprintf("%s / %s / %s", loc.Name(), loc.City(), m.TakenAt.Format("2006"))
}
} else if loc.City() != "" && loc.CountryName() != "" {
if len(loc.City()) > 20 {
m.PhotoTitle = fmt.Sprintf("%s / %s", loc.City(), m.TakenAt.Format("2006"))
} else {
m.PhotoTitle = fmt.Sprintf("%s / %s / %s", loc.City(), loc.CountryName(), m.TakenAt.Format("2006"))
}
}
}
if !hasLocation || m.NoTitle() {
if len(labels) > 0 && labels[0].Priority >= -1 && labels[0].Uncertainty <= 85 && labels[0].Name != "" {
m.PhotoTitle = fmt.Sprintf("%s / %s", txt.Title(labels[0].Name), m.TakenAt.Format("2006"))
} else if !m.TakenAtLocal.IsZero() {
m.PhotoTitle = fmt.Sprintf("Unknown / %s", m.TakenAtLocal.Format("2006"))
} else {
m.PhotoTitle = "Unknown"
}
log.Infof("photo: changed empty photo title to \"%s\"", m.PhotoTitle)
} else {
log.Infof("photo: new title is \"%s\"", m.PhotoTitle)
}
return nil
}