let f thread_view thread_id request =
<script type="text/javascript" src="/assets/js/js_thread.js" defer="defer"></script>
      <%s! thread_view %>
% let thread_url = Format.sprintf "/thread/%s" thread_id in
% begin match Dream.session "nick" request with
% | None ->
% let redirect = Dream.to_percent_encoded thread_url in
<a href="/login?redirect=<%s redirect%>">Login to reply!</a>
% | Some _ ->
    <div class="post-form">
        <%s! Dream.form_tag ~action:( Format.sprintf "/thread/%s" thread_id)
        ~enctype:`Multipart_form_data request %>

        <label for="reply-comment" id="reply-comment-label" class="form-label">Comment:</label>
        <textarea name="reply-comment" type="text" class="form-control" id="reply-comment" aria-labelledby="reply-comment-label"></textarea>

        <label for="tags" id="tags-label" class="form-label">Tags:</label>
        <input name="tags" type="text" class="form-control" id="tags" aria-labelledby="tags-label"></input>

        <label for="file" id="file-label" class="form-label">Picture:</label>
        <input id="file" name="file" aria-describedby="file-label" type="file" accept="image/*">

        <label for="alt" id="alt-label" class="form-label">Image description:</label>
        <input name="alt" type="text" class="form-control" id="alt" aria-labelledby="alt-label"></input>
      <button type="submit" class="btn btn-primary">Reply</button>
      </div>
    </form>
% end;
% let feed_url = Format.sprintf "%s/feed" thread_url in
<a type="application/atom+xml" href=<%s! feed_url %> >
    <img src="/assets/img/atom.svg" class="rss-logo" />
</a>
<link rel="alternate" type="application/atom+xml" href=<%s! feed_url %> />