// serveFile serves the relevant view when the subject in serveSubject
// is a permanode with some content cref. It is meant to be called
// from serveSubject.
func (pr *publishRequest) serveFile(cref blob.Ref) error {
des, err := pr.dr.DescribeSync(cref)
if err != nil {
pr.pf("<p>Error serving file</p>")
return fmt.Errorf("Could not describe %v: %v", cref, err)
}
if des.File != nil {
path := []blob.Ref{pr.subject, cref}
downloadURL := pr.SubresFileURL(path, des.File.FileName)
pr.pf("<div>File: %s, %d bytes, type %s</div>",
html.EscapeString(des.File.FileName),
des.File.Size,
des.File.MIMEType)
if des.File.IsImage() {
pr.pf("<a href='%s'><img src='%s'></a>",
downloadURL,
pr.SubresThumbnailURL(path, des.File.FileName, 600))
}
pr.pf("<div id='%s' class='camlifile'>[<a href='%s'>download</a>]</div>",
cref.DomID(),
downloadURL)
}
if strings.Contains(pr.subjectBasePath, resSeparator) {
// this permanode has a "parent" collection.
// so we send a deep request on the parent in order to get some info
// about the siblings and build some "prev" and "next" nav links.
// TODO(mpl): nav links everywhere, not just when showing a permanode
// with some content.
err := pr.serveNav()
if err != nil {
pr.pf("<p>Error building navs links</p>")
return err
}
}
return nil
}