Add next and previous buttons only when content is available

pystream/routers/video.py

@@ -75,11 +75,10 @@ async def stream_video(request: Request,
         )
     if pure_path.exists():
         prev_, next_ = squire.get_iter(pure_path)
-        # fixme: perhaps, remove previous and next buttons in template instead of defaulting to #
         attrs = {
             "request": request, "title": video_path,
             "path": f"{config.static.streaming_endpoint}?{config.static.query_param}={urlparse.quote(str(pure_path))}",
-            "previous": prev_ or "#", "next": next_ or "#"
+            "previous": prev_, "next": next_
         }
         # set default to avoid broken image sign in thumbnail
         preview_src = os.path.join(pathlib.PurePath(__file__).parent, "blank.jpg")

pystream/templates/index.html

@@ -129,12 +129,16 @@ <h1>{{title}}</h1>
         <a href="https://videojs.com/html5-video-support/" target="_blank">supports HTML5 video</a>
     </p>
 </video>
+{% if previous %}
 <button class="iter" style="float: left" onclick="window.location='{{ previous }}'" title="{{ previous }}">
     <i class="fa fa-backward"></i> Previous
 </button>
+{% endif %}
+{% if next %}
 <button class="iter" style="float: right" onclick="window.location='{{ next }}'" title="{{ next }}">
     Next <i class="fa fa-forward"></i>
 </button>
+{% endif %}
 <br><br>
 </div>
 <script>