photoprism/internal/api/thumbnails.go

78 lines
2.3 KiB
Go

package api
import (
"fmt"
"strconv"
"github.com/photoprism/photoprism/internal/context"
log "github.com/sirupsen/logrus"
"github.com/gin-gonic/gin"
"github.com/photoprism/photoprism/internal/photoprism"
)
var photoIconSvg = []byte(`
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
<path d="M0 0h24v24H0z" fill="none"/>
<path d="M21 19V5c0-1.1-.9-2-2-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2zM8.5 13.5l2.5 3.01L14.5 12l4.5 6H5l3.5-4.5z"/>
</svg>`)
// GET /api/v1/thumbnails/:type/:size/:hash
//
// Parameters:
// type: string Format, either "fit" or "square"
// size: int Size in pixels
// hash: string The file hash as returned by the search API
func GetThumbnail(router *gin.RouterGroup, ctx *context.Context) {
router.GET("/thumbnails/:type/:size/:hash", func(c *gin.Context) {
fileHash := c.Param("hash")
thumbnailType := c.Param("type")
size, err := strconv.Atoi(c.Param("size"))
if err != nil {
log.Errorf("invalid size: %s", c.Param("size"))
c.Data(400, "image/svg+xml", photoIconSvg)
return
}
search := photoprism.NewSearch(ctx.OriginalsPath(), ctx.Db())
file, err := search.FindFileByHash(fileHash)
if err != nil {
c.AbortWithStatusJSON(404, gin.H{"error": err.Error()})
return
}
fileName := fmt.Sprintf("%s/%s", ctx.OriginalsPath(), file.FileName)
mediaFile, err := photoprism.NewMediaFile(fileName)
if err != nil {
log.Errorf("could not find image for thumbnail: %s", err.Error())
c.Data(404, "image/svg+xml", photoIconSvg)
// Set missing flag so that the file doesn't show up in search results anymore
file.FileMissing = true
ctx.Db().Save(&file)
return
}
switch thumbnailType {
case "fit":
if thumbnail, err := mediaFile.Thumbnail(ctx.ThumbnailsPath(), size); err == nil {
c.File(thumbnail.Filename())
} else {
log.Errorf("could not create thumbnail: %s", err.Error())
c.Data(400, "image/svg+xml", photoIconSvg)
}
case "square":
if thumbnail, err := mediaFile.SquareThumbnail(ctx.ThumbnailsPath(), size); err == nil {
c.File(thumbnail.Filename())
} else {
log.Errorf("could not create square thumbnail: %s", err.Error())
c.Data(400, "image/svg+xml", photoIconSvg)
}
default:
log.Errorf("unknown thumbnail type: %s", thumbnailType)
c.Data(400, "image/svg+xml", photoIconSvg)
}
})
}