142 lines
3.8 KiB
Go
142 lines
3.8 KiB
Go
package entity
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import (
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"strings"
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"sync"
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"time"
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"github.com/photoprism/photoprism/internal/event"
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"github.com/photoprism/photoprism/pkg/clean"
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"github.com/photoprism/photoprism/pkg/txt"
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)
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var lensMutex = sync.Mutex{}
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// Lenses represents a list of lenses.
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type Lenses []Lens
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// Lens represents camera lens (as extracted from UpdateExif metadata)
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type Lens struct {
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ID uint `gorm:"primary_key" json:"ID" yaml:"ID"`
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LensSlug string `gorm:"type:VARBINARY(160);unique_index;" json:"Slug" yaml:"Slug,omitempty"`
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LensName string `gorm:"type:VARCHAR(160);" json:"Name" yaml:"Name"`
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LensMake string `gorm:"type:VARCHAR(160);" json:"Make" yaml:"Make,omitempty"`
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LensModel string `gorm:"type:VARCHAR(160);" json:"Model" yaml:"Model,omitempty"`
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LensType string `gorm:"type:VARCHAR(100);" json:"Type" yaml:"Type,omitempty"`
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LensDescription string `gorm:"type:VARCHAR(2048);" json:"Description,omitempty" yaml:"Description,omitempty"`
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LensNotes string `gorm:"type:VARCHAR(1024);" json:"Notes,omitempty" yaml:"Notes,omitempty"`
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CreatedAt time.Time `json:"-" yaml:"-"`
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UpdatedAt time.Time `json:"-" yaml:"-"`
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DeletedAt *time.Time `sql:"index" json:"-" yaml:"-"`
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}
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// TableName returns the entity table name.
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func (Lens) TableName() string {
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return "lenses"
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}
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var UnknownLens = Lens{
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LensSlug: UnknownID,
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LensName: "Unknown",
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LensMake: "",
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LensModel: "Unknown",
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}
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// CreateUnknownLens initializes the database with an unknown lens if not exists
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func CreateUnknownLens() {
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UnknownLens = *FirstOrCreateLens(&UnknownLens)
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}
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// NewLens creates a new lens in database
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func NewLens(modelName string, makeName string) *Lens {
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modelName = strings.TrimSpace(modelName)
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makeName = strings.TrimSpace(makeName)
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if modelName == "" && makeName == "" {
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return &UnknownLens
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} else if strings.HasPrefix(modelName, makeName) {
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modelName = strings.TrimSpace(modelName[len(makeName):])
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}
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if n, ok := CameraMakes[makeName]; ok {
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makeName = n
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}
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var name []string
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if makeName != "" {
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name = append(name, makeName)
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}
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if modelName != "" {
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name = append(name, modelName)
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}
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lensName := strings.Join(name, " ")
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result := &Lens{
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LensSlug: txt.Slug(lensName),
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LensName: txt.Clip(lensName, txt.ClipName),
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LensMake: txt.Clip(makeName, txt.ClipName),
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LensModel: txt.Clip(modelName, txt.ClipName),
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}
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return result
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}
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// Create inserts a new row to the database.
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func (m *Lens) Create() error {
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lensMutex.Lock()
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defer lensMutex.Unlock()
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return Db().Create(m).Error
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}
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// FirstOrCreateLens returns the existing row, inserts a new row or nil in case of errors.
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func FirstOrCreateLens(m *Lens) *Lens {
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if m.LensSlug == "" {
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return &UnknownLens
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}
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if cacheData, ok := lensCache.Get(m.LensSlug); ok {
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log.Tracef("lens: cache hit for %s", m.LensSlug)
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return cacheData.(*Lens)
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}
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result := Lens{}
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if res := Db().Where("lens_slug = ?", m.LensSlug).First(&result); res.Error == nil {
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lensCache.SetDefault(m.LensSlug, &result)
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return &result
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} else if err := m.Create(); err == nil {
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if !m.Unknown() {
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event.EntitiesCreated("lenses", []*Lens{m})
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event.Publish("count.lenses", event.Data{
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"count": 1,
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})
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}
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lensCache.SetDefault(m.LensSlug, m)
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return m
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} else if res := Db().Where("lens_slug = ?", m.LensSlug).First(&result); res.Error == nil {
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lensCache.SetDefault(m.LensSlug, &result)
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return &result
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} else {
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log.Errorf("lens: %s (create %s)", err.Error(), clean.Log(m.String()))
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}
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return &UnknownLens
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}
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// String returns an identifier that can be used in logs.
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func (m *Lens) String() string {
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return clean.Log(m.LensName)
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}
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// Unknown returns true if the lens is not a known make or model.
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func (m *Lens) Unknown() bool {
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return m.LensSlug == "" || m.LensSlug == UnknownLens.LensSlug
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}
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