Function previewHandler

http/preview.go:37–70

(imgSvc ImgService, fileCache FileCache, enableThumbnails, resizePreview bool)

}

func previewHandler(imgSvc ImgService, fileCache FileCache, enableThumbnails, resizePreview bool) handleFunc {
	return withUser(func(w http.ResponseWriter, r *http.Request, d *data) (int, error) {
		if !d.user.Perm.Download {
			return http.StatusAccepted, nil
		}
		vars := mux.Vars(r)

		previewSize, err := ParsePreviewSize(vars["size"])
		if err != nil {
			return http.StatusBadRequest, err
		}

		file, err := files.NewFileInfo(&files.FileOptions{
			Fs:         d.user.Fs,
			Path:       "/" + vars["path"],
			Modify:     d.user.Perm.Modify,
			Expand:     true,
			ReadHeader: d.server.TypeDetectionByHeader,
			Checker:    d,
		})
		if err != nil {
			return errToStatus(err), err
		}

		setContentDisposition(w, r, file)

		switch file.Type {
		case "image":
			return handleImagePreview(w, r, imgSvc, fileCache, file, previewSize, enableThumbnails, resizePreview)
		default:
			return http.StatusNotImplemented, fmt.Errorf("can't create preview for %s type", file.Type)
		}
	})
}

func handleImagePreview(
	w http.ResponseWriter,