68 lines
1.2 KiB
Go
68 lines
1.2 KiB
Go
package photoprism
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import (
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"fmt"
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"sync"
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"time"
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"github.com/photoprism/photoprism/internal/entity"
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"github.com/photoprism/photoprism/internal/query"
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)
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// Photos represents photo id lookup table, sorted by date and S2 cell id.
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type Photos struct {
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count int
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photos query.PhotoMap
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mutex sync.RWMutex
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}
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// NewPhotos returns a new Photos instance.
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func NewPhotos() *Photos {
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m := &Photos{
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photos: make(query.PhotoMap),
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}
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return m
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}
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// Init fetches the list from the database once.
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func (m *Photos) Init() error {
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m.mutex.Lock()
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defer m.mutex.Unlock()
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if len(m.photos) > 0 {
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m.count = len(m.photos)
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return nil
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}
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photos, err := query.IndexedPhotos()
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if err != nil {
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return fmt.Errorf("%s (find indexed photos)", err.Error())
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} else {
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m.photos = photos
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m.count = len(photos)
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return nil
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}
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}
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// Remove a photo from the lookup table.
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func (m *Photos) Remove(takenAt time.Time, cellId string) {
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key := entity.MapKey(takenAt, cellId)
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m.mutex.Lock()
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defer m.mutex.Unlock()
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delete(m.photos, key)
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}
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// Find returns the photo ID for a time and cell id.
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func (m *Photos) Find(takenAt time.Time, cellId string) uint {
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key := entity.MapKey(takenAt, cellId)
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m.mutex.RLock()
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defer m.mutex.RUnlock()
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return m.photos[key]
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}
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