package api import ( "net/http" "path/filepath" "time" "github.com/gin-gonic/gin" "github.com/photoprism/photoprism/internal/photoprism" "github.com/photoprism/photoprism/internal/query" "github.com/photoprism/photoprism/internal/service" "github.com/photoprism/photoprism/internal/thumb" "github.com/photoprism/photoprism/pkg/fs" "github.com/photoprism/photoprism/pkg/txt" ) // Namespaces for caching and logs. const ( albumCover = "album-cover" labelCover = "label-cover" ) // AlbumCover returns an album cover image. // // GET /api/v1/albums/:uid/t/:token/:size // // Parameters: // uid: string album uid // token: string security token (see config) // size: string thumb type, see photoprism.ThumbnailTypes func AlbumCover(router *gin.RouterGroup) { router.GET("/albums/:uid/t/:token/:size", func(c *gin.Context) { if InvalidPreviewToken(c) { c.Data(http.StatusForbidden, "image/svg+xml", albumIconSvg) return } start := time.Now() conf := service.Config() thumbName := thumb.Name(c.Param("size")) uid := c.Param("uid") size, ok := thumb.Sizes[thumbName] if !ok { log.Errorf("%s: invalid size %s", albumCover, thumbName) c.Data(http.StatusOK, "image/svg+xml", albumIconSvg) return } cache := service.CoverCache() cacheKey := CacheKey(albumCover, uid, string(thumbName)) if cacheData, ok := cache.Get(cacheKey); ok { log.Debugf("api: cache hit for %s [%s]", cacheKey, time.Since(start)) cached := cacheData.(ThumbCache) if !fs.FileExists(cached.FileName) { log.Errorf("%s: %s not found", albumCover, uid) c.Data(http.StatusOK, "image/svg+xml", albumIconSvg) return } AddCoverCacheHeader(c) if c.Query("download") != "" { c.FileAttachment(cached.FileName, cached.ShareName) } else { c.File(cached.FileName) } return } f, err := query.AlbumCoverByUID(uid) if err != nil { log.Debugf("%s: %s contains no photos, using generic cover", albumCover, uid) c.Data(http.StatusOK, "image/svg+xml", albumIconSvg) return } fileName := photoprism.FileName(f.FileRoot, f.FileName) if !fs.FileExists(fileName) { log.Errorf("%s: found no original for %s", albumCover, fileName) c.Data(http.StatusOK, "image/svg+xml", albumIconSvg) // Set missing flag so that the file doesn't show up in search results anymore. log.Warnf("%s: %s is missing", albumCover, txt.Quote(f.FileName)) logError(albumCover, f.Update("FileMissing", true)) return } // Use original file if thumb size exceeds limit, see https://github.com/photoprism/photoprism/issues/157 if size.ExceedsLimit() && c.Query("download") == "" { log.Debugf("%s: using original, size exceeds limit (width %d, height %d)", albumCover, size.Width, size.Height) AddCoverCacheHeader(c) c.File(fileName) return } var thumbnail string if conf.ThumbUncached() || size.Uncached() { thumbnail, err = thumb.FromFile(fileName, f.FileHash, conf.ThumbPath(), size.Width, size.Height, f.FileOrientation, size.Options...) } else { thumbnail, err = thumb.FromCache(fileName, f.FileHash, conf.ThumbPath(), size.Width, size.Height, size.Options...) } if err != nil { log.Errorf("%s: %s", albumCover, err) c.Data(http.StatusOK, "image/svg+xml", albumIconSvg) return } else if thumbnail == "" { log.Errorf("%s: %s has empty thumb name - bug?", albumCover, filepath.Base(fileName)) c.Data(http.StatusOK, "image/svg+xml", albumIconSvg) return } cache.SetDefault(cacheKey, ThumbCache{thumbnail, f.ShareBase(0)}) log.Debugf("cached %s [%s]", cacheKey, time.Since(start)) AddCoverCacheHeader(c) if c.Query("download") != "" { c.FileAttachment(thumbnail, f.DownloadName(DownloadName(c), 0)) } else { c.File(thumbnail) } }) } // LabelCover returns a label cover image. // // GET /api/v1/labels/:uid/t/:token/:size // // Parameters: // uid: string label uid // token: string security token (see config) // size: string thumb type, see photoprism.ThumbnailTypes func LabelCover(router *gin.RouterGroup) { router.GET("/labels/:uid/t/:token/:size", func(c *gin.Context) { if InvalidPreviewToken(c) { c.Data(http.StatusForbidden, "image/svg+xml", labelIconSvg) return } start := time.Now() conf := service.Config() thumbName := thumb.Name(c.Param("size")) uid := c.Param("uid") size, ok := thumb.Sizes[thumbName] if !ok { log.Errorf("%s: invalid size %s", labelCover, thumbName) c.Data(http.StatusOK, "image/svg+xml", labelIconSvg) return } cache := service.CoverCache() cacheKey := CacheKey(labelCover, uid, string(thumbName)) if cacheData, ok := cache.Get(cacheKey); ok { log.Debugf("api: cache hit for %s [%s]", cacheKey, time.Since(start)) cached := cacheData.(ThumbCache) if !fs.FileExists(cached.FileName) { log.Errorf("%s: %s not found", labelCover, uid) c.Data(http.StatusOK, "image/svg+xml", labelIconSvg) return } AddCoverCacheHeader(c) if c.Query("download") != "" { c.FileAttachment(cached.FileName, cached.ShareName) } else { c.File(cached.FileName) } return } f, err := query.LabelThumbByUID(uid) if err != nil { log.Errorf(err.Error()) c.Data(http.StatusOK, "image/svg+xml", labelIconSvg) return } fileName := photoprism.FileName(f.FileRoot, f.FileName) if !fs.FileExists(fileName) { log.Errorf("%s: file %s is missing", labelCover, txt.Quote(f.FileName)) c.Data(http.StatusOK, "image/svg+xml", labelIconSvg) // Set missing flag so that the file doesn't show up in search results anymore. logError(labelCover, f.Update("FileMissing", true)) return } // Use original file if thumb size exceeds limit, see https://github.com/photoprism/photoprism/issues/157 if size.ExceedsLimit() { log.Debugf("%s: using original, size exceeds limit (width %d, height %d)", labelCover, size.Width, size.Height) AddCoverCacheHeader(c) c.File(fileName) return } var thumbnail string if conf.ThumbUncached() || size.Uncached() { thumbnail, err = thumb.FromFile(fileName, f.FileHash, conf.ThumbPath(), size.Width, size.Height, f.FileOrientation, size.Options...) } else { thumbnail, err = thumb.FromCache(fileName, f.FileHash, conf.ThumbPath(), size.Width, size.Height, size.Options...) } if err != nil { log.Errorf("%s: %s", labelCover, err) c.Data(http.StatusOK, "image/svg+xml", labelIconSvg) return } else if thumbnail == "" { log.Errorf("%s: %s has empty thumb name - bug?", labelCover, filepath.Base(fileName)) c.Data(http.StatusOK, "image/svg+xml", labelIconSvg) return } cache.SetDefault(cacheKey, ThumbCache{thumbnail, f.ShareBase(0)}) log.Debugf("cached %s [%s]", cacheKey, time.Since(start)) AddCoverCacheHeader(c) if c.Query("download") != "" { c.FileAttachment(thumbnail, f.DownloadName(DownloadName(c), 0)) } else { c.File(thumbnail) } }) }