package entity import ( "time" "github.com/jinzhu/gorm" "github.com/photoprism/photoprism/pkg/fs" "github.com/photoprism/photoprism/pkg/txt" ) // EstimateCountry updates the photo with an estimated country if possible. func (m *Photo) EstimateCountry() { if m.HasLocation() || m.HasPlace() || m.HasCountry() && m.PlaceSrc != SrcAuto && m.PlaceSrc != SrcEstimate { // Do nothing. return } unknown := UnknownCountry.ID countryCode := unknown if code := txt.CountryCode(m.PhotoTitle); code != unknown { countryCode = code } if countryCode == unknown { if code := txt.CountryCode(m.PhotoName); code != unknown && !fs.IsGenerated(m.PhotoName) { countryCode = code } else if code := txt.CountryCode(m.PhotoPath); code != unknown { countryCode = code } } if countryCode == unknown && m.OriginalName != "" && !fs.IsGenerated(m.OriginalName) { if code := txt.CountryCode(m.OriginalName); code != UnknownCountry.ID { countryCode = code } } if countryCode != unknown { m.PhotoCountry = countryCode m.PlaceSrc = SrcEstimate log.Debugf("photo: probable country for %s is %s", m, txt.Quote(m.CountryName())) } } // EstimatePlace updates the photo with an estimated place and country if possible. func (m *Photo) EstimatePlace() { if m.HasLocation() || m.HasPlace() && m.PlaceSrc != SrcAuto && m.PlaceSrc != SrcEstimate { // Do nothing. return } var recentPhoto Photo var dateExpr string switch DbDialect() { case MySQL: dateExpr = "ABS(DATEDIFF(taken_at, ?)) ASC" case SQLite: dateExpr = "ABS(JulianDay(taken_at) - JulianDay(?)) ASC" default: log.Errorf("photo: unknown sql dialect %s", DbDialect()) return } if err := UnscopedDb(). Where("place_id <> '' AND place_id <> 'zz' AND place_src <> '' AND place_src <> ?", SrcEstimate). Order(gorm.Expr(dateExpr, m.TakenAt)). Preload("Place").First(&recentPhoto).Error; err != nil { log.Debugf("photo: can't estimate place at %s", m.TakenAt) m.EstimateCountry() } else { if hours := recentPhoto.TakenAt.Sub(m.TakenAt) / time.Hour; hours < -36 || hours > 36 { log.Debugf("photo: can't estimate position of %s, %d hours time difference", m, hours) } else if recentPhoto.HasPlace() { m.Place = recentPhoto.Place m.PlaceID = recentPhoto.PlaceID m.PhotoCountry = recentPhoto.PhotoCountry m.PlaceSrc = SrcEstimate m.UpdateTimeZone(recentPhoto.TimeZone) log.Debugf("photo: approximate position of %s is %s (id %s)", m, txt.Quote(m.CountryName()), recentPhoto.PlaceID) } else if recentPhoto.HasCountry() { m.PhotoCountry = recentPhoto.PhotoCountry m.PlaceSrc = SrcEstimate m.UpdateTimeZone(recentPhoto.TimeZone) log.Debugf("photo: probable country for %s is %s", m, txt.Quote(m.CountryName())) } else { m.EstimateCountry() } } }