149 lines
3.9 KiB
Go
149 lines
3.9 KiB
Go
package api
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import (
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"fmt"
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"net/http"
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"path"
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"path/filepath"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/photoprism/photoprism/internal/config"
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"github.com/photoprism/photoprism/internal/query"
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"github.com/photoprism/photoprism/internal/service"
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"github.com/photoprism/photoprism/internal/thumb"
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"github.com/photoprism/photoprism/pkg/fs"
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"github.com/photoprism/photoprism/pkg/txt"
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)
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type ThumbCache struct {
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FileName string
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ShareName string
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}
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// GET /api/v1/t/:hash/:token/:type
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//
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// Parameters:
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// hash: string The file hash as returned by the search API
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// type: string Thumbnail type, see photoprism.ThumbnailTypes
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func GetThumbnail(router *gin.RouterGroup, conf *config.Config) {
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router.GET("/t/:hash/:token/:type", func(c *gin.Context) {
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if InvalidToken(c, conf) {
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c.Data(http.StatusForbidden, "image/svg+xml", brokenIconSvg)
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return
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}
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start := time.Now()
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fileHash := c.Param("hash")
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typeName := c.Param("type")
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thumbType, ok := thumb.Types[typeName]
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if !ok {
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log.Errorf("thumbnail: invalid type %s", txt.Quote(typeName))
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c.Data(http.StatusOK, "image/svg+xml", photoIconSvg)
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return
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}
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gc := service.Cache()
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cacheKey := fmt.Sprintf("thumbnail:%s:%s", fileHash, typeName)
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if cacheData, ok := gc.Get(cacheKey); ok {
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log.Debugf("cache hit for %s [%s]", cacheKey, time.Since(start))
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cached := cacheData.(*ThumbCache)
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if !fs.FileExists(cached.FileName) {
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log.Errorf("thumbnail: %s not found", fileHash)
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c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
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return
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}
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if c.Query("download") != "" {
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c.FileAttachment(cached.FileName, cached.ShareName)
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} else {
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c.File(cached.FileName)
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}
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return
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}
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f, err := query.FileByHash(fileHash)
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if err != nil {
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c.Data(http.StatusOK, "image/svg+xml", photoIconSvg)
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return
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}
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// Find fallback if file is not a JPEG image.
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if f.NoJPEG() {
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f, err = query.FileByPhotoUID(f.PhotoUID)
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if err != nil {
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c.Data(http.StatusOK, "image/svg+xml", fileIconSvg)
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return
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}
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}
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// Return SVG icon as placeholder if file has errors.
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if f.FileError != "" {
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c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
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return
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}
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fileName := path.Join(conf.OriginalsPath(), f.FileName)
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if !fs.FileExists(fileName) {
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log.Errorf("thumbnail: file %s is missing", txt.Quote(f.FileName))
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c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
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// Set missing flag so that the file doesn't show up in search results anymore.
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logError("thumbnail", f.Update("FileMissing", true))
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if f.AllFilesMissing() {
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log.Infof("thumbnail: deleting photo, all files missing for %s", txt.Quote(f.FileName))
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logError("thumbnail", f.RelatedPhoto().Delete(false))
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}
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return
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}
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// Use original file if thumb size exceeds limit, see https://github.com/photoprism/photoprism/issues/157
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if thumbType.ExceedsLimit() && c.Query("download") == "" {
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log.Debugf("thumbnail: using original, size exceeds limit (width %d, height %d)", thumbType.Width, thumbType.Height)
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c.File(fileName)
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return
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}
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var thumbnail string
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if conf.ThumbUncached() || thumbType.OnDemand() {
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thumbnail, err = thumb.FromFile(fileName, f.FileHash, conf.ThumbPath(), thumbType.Width, thumbType.Height, thumbType.Options...)
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} else {
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thumbnail, err = thumb.FromCache(fileName, f.FileHash, conf.ThumbPath(), thumbType.Width, thumbType.Height, thumbType.Options...)
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}
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if err != nil {
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log.Errorf("thumbnail: %s", err)
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c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
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return
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} else if thumbnail == "" {
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log.Errorf("thumbnail: %s has empty thumb name - bug?", filepath.Base(fileName))
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c.Data(http.StatusOK, "image/svg+xml", brokenIconSvg)
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return
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}
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// Cache thumbnail filename.
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gc.Set(cacheKey, &ThumbCache{thumbnail, f.ShareFileName()}, time.Hour*24)
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log.Debugf("cached %s [%s]", cacheKey, time.Since(start))
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if c.Query("download") != "" {
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c.FileAttachment(thumbnail, f.ShareFileName())
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} else {
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c.File(thumbnail)
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}
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})
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}
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