Function ThumbnailExt

internal/attachments/processor.go:156–165

ThumbnailExt returns the file extension for a thumbnail encoded in `format`. Used to build a synthetic filename for the derived row (parent's basename + variant + extension) so downloads with Content-Disposition expose a sensible filename.

(format string)

// (parent's basename + variant + extension) so downloads with
// Content-Disposition expose a sensible filename.
func ThumbnailExt(format string) string {
	switch format {
	case "png":
		return ".png"
	case "jpeg", "jpg":
		return ".jpg"
	default:
		return ".bin"
	}
}