( w http.ResponseWriter, r *http.Request, imgSvc ImgService, fileCache FileCache, file *files.FileInfo, previewSize PreviewSize, enableThumbnails, resizePreview bool, )
| 70 | } |
| 71 | |
| 72 | func handleImagePreview( |
| 73 | w http.ResponseWriter, |
| 74 | r *http.Request, |
| 75 | imgSvc ImgService, |
| 76 | fileCache FileCache, |
| 77 | file *files.FileInfo, |
| 78 | previewSize PreviewSize, |
| 79 | enableThumbnails, resizePreview bool, |
| 80 | ) (int, error) { |
| 81 | if (previewSize == PreviewSizeBig && !resizePreview) || |
| 82 | (previewSize == PreviewSizeThumb && !enableThumbnails) { |
| 83 | return rawFileHandler(w, r, file) |
| 84 | } |
| 85 | |
| 86 | format, err := imgSvc.FormatFromExtension(file.Extension) |
| 87 | // Unsupported extensions directly return the raw data |
| 88 | if errors.Is(err, img.ErrUnsupportedFormat) || format == img.FormatGif { |
| 89 | return rawFileHandler(w, r, file) |
| 90 | } |
| 91 | if err != nil { |
| 92 | return errToStatus(err), err |
| 93 | } |
| 94 | |
| 95 | cacheKey := previewCacheKey(file, previewSize) |
| 96 | resizedImage, ok, err := fileCache.Load(r.Context(), cacheKey) |
| 97 | if err != nil { |
| 98 | return errToStatus(err), err |
| 99 | } |
| 100 | if !ok { |
| 101 | resizedImage, err = createPreview(imgSvc, fileCache, file, previewSize) |
| 102 | if err != nil { |
| 103 | return errToStatus(err), err |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | w.Header().Set("Cache-Control", "private") |
| 108 | http.ServeContent(w, r, file.Name, file.ModTime, bytes.NewReader(resizedImage)) |
| 109 | |
| 110 | return 0, nil |
| 111 | } |
| 112 | |
| 113 | func createPreview(imgSvc ImgService, fileCache FileCache, |
| 114 | file *files.FileInfo, previewSize PreviewSize) ([]byte, error) { |
no test coverage detected