photoprism/internal/api/photo_thumbnail.go
Michael Mayer 2156afd85a File browser: Implement clipboard; refactor entities and fixtures #260
Signed-off-by: Michael Mayer <michael@liquidbytes.net>
2020-05-25 19:10:44 +02:00

109 lines
3.0 KiB
Go

package api
import (
"net/http"
"path"
"path/filepath"
"github.com/gin-gonic/gin"
"github.com/photoprism/photoprism/internal/config"
"github.com/photoprism/photoprism/internal/query"
"github.com/photoprism/photoprism/internal/thumb"
"github.com/photoprism/photoprism/pkg/fs"
"github.com/photoprism/photoprism/pkg/txt"
)
// GET /api/v1/thumbnails/:hash/:type
//
// Parameters:
// hash: string The file hash as returned by the search API
// type: string Thumbnail type, see photoprism.ThumbnailTypes
func GetThumbnail(router *gin.RouterGroup, conf *config.Config) {
router.GET("/thumbnails/:hash/:type", func(c *gin.Context) {
fileHash := c.Param("hash")
typeName := c.Param("type")
thumbType, ok := thumb.Types[typeName]
if !ok {
log.Errorf("photo: invalid thumb type %s", txt.Quote(typeName))
c.Data(http.StatusOK, "image/svg+xml", photoIconSvg)
return
}
f, err := query.FileByHash(fileHash)
if err != nil {
c.Data(http.StatusOK, "image/svg+xml", photoIconSvg)
return
}
// Find fallback if file is not a JPEG image.
if f.NoJPEG() {
f, err = query.FileByPhotoUID(f.PhotoUID)
if err != nil {
c.Data(http.StatusOK, "image/svg+xml", fileIconSvg)
return
}
}
// Return SVG icon as placeholder if file has errors.
if f.FileError != "" {
c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
return
}
fileName := path.Join(conf.OriginalsPath(), f.FileName)
if !fs.FileExists(fileName) {
log.Errorf("photo: file %s is missing", txt.Quote(f.FileName))
c.Data(http.StatusOK, "image/svg+xml", photoIconSvg)
// Set missing flag so that the file doesn't show up in search results anymore.
report("photo", f.Update("FileMissing", true))
if f.AllFilesMissing() {
log.Infof("photo: deleting photo, all files missing for %s", txt.Quote(f.FileName))
report("photo", f.RelatedPhoto().Delete(false))
}
return
}
// Use original file if thumb size exceeds limit, see https://github.com/photoprism/photoprism/issues/157
if thumbType.ExceedsLimit() && c.Query("download") == "" {
log.Debugf("photo: using original, thumbnail size exceeds limit (width %d, height %d)", thumbType.Width, thumbType.Height)
c.File(fileName)
return
}
var thumbnail string
if conf.ThumbUncached() || thumbType.OnDemand() {
thumbnail, err = thumb.FromFile(fileName, f.FileHash, conf.ThumbPath(), thumbType.Width, thumbType.Height, thumbType.Options...)
} else {
thumbnail, err = thumb.FromCache(fileName, f.FileHash, conf.ThumbPath(), thumbType.Width, thumbType.Height, thumbType.Options...)
}
if err != nil {
log.Errorf("photo: %s", err)
c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
return
} else if thumbnail == "" {
log.Errorf("photo: thumbnail name for %s is empty - bug?", filepath.Base(fileName))
c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
return
}
if c.Query("download") != "" {
c.FileAttachment(thumbnail, f.ShareFileName())
} else {
c.File(thumbnail)
}
})
}