photoprism/internal/entity/camera.go
Michael Mayer e8e0639d78 Backend: Provide unknown camera & lens as default
Signed-off-by: Michael Mayer <michael@liquidbytes.net>
2020-04-25 14:22:47 +02:00

86 lines
2.1 KiB
Go

package entity
import (
"fmt"
"strings"
"time"
"github.com/gosimple/slug"
"github.com/jinzhu/gorm"
"github.com/photoprism/photoprism/internal/mutex"
)
// Camera model and make (as extracted from UpdateExif metadata)
type Camera struct {
ID uint `gorm:"primary_key"`
CameraSlug string `gorm:"type:varbinary(128);unique_index;"`
CameraModel string `gorm:"type:varchar(128);"`
CameraMake string `gorm:"type:varchar(128);"`
CameraType string `gorm:"type:varchar(128);"`
CameraDescription string `gorm:"type:text;"`
CameraNotes string `gorm:"type:text;"`
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt *time.Time `sql:"index"`
}
var UnknownCamera = Camera{
CameraModel: "Unknown",
CameraMake: "",
CameraSlug: "zz",
}
// CreateUnknownCamera initializes the database with an unknown camera if not exists
func CreateUnknownCamera(db *gorm.DB) {
UnknownCamera.FirstOrCreate(db)
}
// NewCamera creates a camera entity from a model name and a make name.
func NewCamera(modelName string, makeName string) *Camera {
makeName = strings.TrimSpace(makeName)
if modelName == "" {
return &UnknownCamera
} else if strings.HasPrefix(modelName, makeName) {
modelName = strings.TrimSpace(modelName[len(makeName):])
}
var cameraSlug string
if makeName != "" {
cameraSlug = slug.Make(makeName + " " + modelName)
} else {
cameraSlug = slug.Make(modelName)
}
result := &Camera{
CameraModel: modelName,
CameraMake: makeName,
CameraSlug: cameraSlug,
}
return result
}
// FirstOrCreate checks wether the camera model exist already in the database
func (m *Camera) FirstOrCreate(db *gorm.DB) *Camera {
mutex.Db.Lock()
defer mutex.Db.Unlock()
if err := db.FirstOrCreate(m, "camera_model = ? AND camera_make = ?", m.CameraModel, m.CameraMake).Error; err != nil {
log.Errorf("camera: %s", err)
}
return m
}
// String returns a string designing the given Camera entity
func (m *Camera) String() string {
if m.CameraMake != "" && m.CameraModel != "" {
return fmt.Sprintf("%s %s", m.CameraMake, m.CameraModel)
} else if m.CameraModel != "" {
return m.CameraModel
}
return ""
}