package entity import ( "strings" "time" "github.com/photoprism/photoprism/pkg/txt" ) // TrustedTime tests if the photo has a known date and time from a trusted source. func (m *Photo) TrustedTime() bool { if SrcPriority[m.TakenSrc] <= SrcPriority[SrcEstimate] { return false } else if m.TakenAt.IsZero() || m.TakenAtLocal.IsZero() { return false } else if m.TimeZone == "" { return false } return true } // SetTakenAt changes the photo date if not empty and from the same source. func (m *Photo) SetTakenAt(taken, local time.Time, zone, source string) { if taken.IsZero() || taken.Year() < 1000 || taken.Year() > txt.YearMax { return } if SrcPriority[source] < SrcPriority[m.TakenSrc] && !m.TakenAt.IsZero() { return } // Remove time zone if time was extracted from file name. if source == SrcName { zone = "" } // Round times to avoid jitter. taken = taken.Round(time.Second).UTC() // Default local time to taken if zero or invalid. if local.IsZero() || local.Year() < 1000 { local = taken } else { local = local.Round(time.Second) } // Don't update older date. if SrcPriority[source] <= SrcPriority[SrcAuto] && !m.TakenAt.IsZero() && taken.After(m.TakenAt) { return } // Set UTC time and date source. m.TakenAt = taken m.TakenAtLocal = local m.TakenSrc = source if zone == time.UTC.String() && m.TimeZone != "" { // Location exists, set local time from UTC. m.TakenAtLocal = m.GetTakenAtLocal() } else if zone != "" { // Apply new time zone. m.TimeZone = zone m.TakenAt = m.GetTakenAt() } else if m.TimeZoneUTC() { // Local is UTC. m.TimeZone = zone m.TakenAtLocal = taken } else if m.TimeZone != "" { // Apply existing time zone. m.TakenAt = m.GetTakenAt() } m.UpdateDateFields() } // TimeZoneUTC tests if the current time zone is UTC. func (m *Photo) TimeZoneUTC() bool { return strings.EqualFold(m.TimeZone, time.UTC.String()) } // UpdateTimeZone updates the time zone. func (m *Photo) UpdateTimeZone(zone string) { if zone == "" || zone == time.UTC.String() || zone == m.TimeZone { return } if SrcPriority[m.TakenSrc] >= SrcPriority[SrcManual] && m.TimeZone != "" { return } if m.TimeZoneUTC() { m.TimeZone = zone m.TakenAtLocal = m.GetTakenAtLocal() } else { m.TimeZone = zone m.TakenAt = m.GetTakenAt() } } // UpdateDateFields updates internal date fields. func (m *Photo) UpdateDateFields() { if m.TakenAt.IsZero() || m.TakenAt.Year() < 1000 { return } if m.TakenAtLocal.IsZero() || m.TakenAtLocal.Year() < 1000 { m.TakenAtLocal = m.TakenAt } // Set date to unknown if file system date is about the same as indexing time. if m.TakenSrc == SrcAuto && m.TakenAt.After(m.CreatedAt.Add(-24*time.Hour)) { m.PhotoYear = UnknownYear m.PhotoMonth = UnknownMonth m.PhotoDay = UnknownDay } else if m.TakenSrc != SrcManual { m.PhotoYear = m.TakenAtLocal.Year() m.PhotoMonth = int(m.TakenAtLocal.Month()) m.PhotoDay = m.TakenAtLocal.Day() } }