122 lines
3.8 KiB
Go
122 lines
3.8 KiB
Go
package entity
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import (
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"time"
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"github.com/jinzhu/gorm"
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"github.com/photoprism/photoprism/pkg/fs"
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"github.com/photoprism/photoprism/pkg/txt"
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)
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// EstimateCountry updates the photo with an estimated country if possible.
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func (m *Photo) EstimateCountry() {
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if SrcPriority[m.PlaceSrc] > SrcPriority[SrcEstimate] || m.HasLocation() || m.HasPlace() {
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// Do nothing.
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return
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}
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unknown := UnknownCountry.ID
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countryCode := unknown
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if code := txt.CountryCode(m.PhotoTitle); code != unknown {
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countryCode = code
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}
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if countryCode == unknown {
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if code := txt.CountryCode(m.PhotoName); code != unknown && !fs.IsGenerated(m.PhotoName) {
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countryCode = code
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} else if code := txt.CountryCode(m.PhotoPath); code != unknown {
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countryCode = code
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}
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}
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if countryCode == unknown && m.OriginalName != "" && !fs.IsGenerated(m.OriginalName) {
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if code := txt.CountryCode(m.OriginalName); code != UnknownCountry.ID {
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countryCode = code
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}
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}
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if countryCode != unknown {
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m.PhotoCountry = countryCode
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m.PlaceSrc = SrcEstimate
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log.Debugf("photo: probable country for %s is %s", m, txt.Quote(m.CountryName()))
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}
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}
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// EstimatePlace updates the photo with an estimated place and country if possible.
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func (m *Photo) EstimatePlace(force bool) {
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if SrcPriority[m.PlaceSrc] > SrcPriority[SrcEstimate] || m.HasLocation() {
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// Don't estimate if location is known or set otherwise.
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return
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} else if force || m.EstimatedAt == nil {
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// Proceed.
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} else if hours := TimeStamp().Sub(*m.EstimatedAt) / time.Hour; hours < MetadataEstimateInterval {
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// Ignore if estimated less than 7 days ago.
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return
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}
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// Only estimate country if date isn't known with certainty.
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if m.TakenSrc == SrcAuto {
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m.PlaceID = UnknownPlace.ID
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m.PlaceSrc = SrcEstimate
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m.EstimateCountry()
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m.EstimatedAt = TimePointer()
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return
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}
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var err error
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rangeMin := m.TakenAt.Add(-1 * time.Hour * 72)
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rangeMax := m.TakenAt.Add(time.Hour * 72)
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// Find photo with location info taken at a similar time...
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var recentPhoto Photo
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switch DbDialect() {
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case MySQL:
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err = UnscopedDb().
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Where("place_id IS NOT NULL AND place_id <> '' AND place_id <> 'zz' AND place_src <> '' AND place_src <> ?", SrcEstimate).
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Where("taken_at BETWEEN CAST(? AS DATETIME) AND CAST(? AS DATETIME)", rangeMin, rangeMax).
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Order(gorm.Expr("ABS(DATEDIFF(taken_at, ?)) ASC", m.TakenAt)).
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Preload("Place").First(&recentPhoto).Error
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case SQLite:
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err = UnscopedDb().
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Where("place_id IS NOT NULL AND place_id <> '' AND place_id <> 'zz' AND place_src <> '' AND place_src <> ?", SrcEstimate).
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Where("taken_at BETWEEN ? AND ?", rangeMin, rangeMax).
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Order(gorm.Expr("ABS(JulianDay(taken_at) - JulianDay(?)) ASC", m.TakenAt)).
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Preload("Place").First(&recentPhoto).Error
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default:
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log.Warnf("photo: unsupported sql dialect %s", txt.Quote(DbDialect()))
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return
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}
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// Found?
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if err != nil {
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log.Debugf("photo: can't estimate place at %s", m.TakenAt)
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m.EstimateCountry()
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} else {
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// Too much time difference?
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if hours := recentPhoto.TakenAt.Sub(m.TakenAt) / time.Hour; hours < -36 || hours > 36 {
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log.Debugf("photo: can't estimate position of %s, %d hours time difference", m, hours)
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} else if recentPhoto.HasPlace() {
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m.Place = recentPhoto.Place
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m.PlaceID = recentPhoto.PlaceID
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m.PhotoCountry = recentPhoto.PhotoCountry
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m.PlaceSrc = SrcEstimate
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m.UpdateTimeZone(recentPhoto.TimeZone)
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log.Debugf("photo: approximate position of %s is %s (id %s)", m, txt.Quote(m.CountryName()), recentPhoto.PlaceID)
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} else if recentPhoto.HasCountry() {
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m.PhotoCountry = recentPhoto.PhotoCountry
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m.PlaceSrc = SrcEstimate
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m.UpdateTimeZone(recentPhoto.TimeZone)
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log.Debugf("photo: probable country for %s is %s", m, txt.Quote(m.CountryName()))
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} else {
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m.EstimateCountry()
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}
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}
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m.EstimatedAt = TimePointer()
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}
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