Add next-test time to SN details page

observer.py

@@ -33,6 +33,8 @@ else:
 
 app = flask.Flask(__name__)
 
+app.jinja_options['extensions'].append('jinja2.ext.loopcontrols')
+
 class Hex64Converter(BaseConverter):
     def __init__(self, url_map):
         super().__init__(url_map)
@@ -420,6 +422,8 @@ def show_sn(pubkey):
     info = FutureJSON(lmq, oxend, 'rpc.get_info', 1)
     hfinfo = FutureJSON(lmq, oxend, 'rpc.hard_fork_info', 10)
     sn = sn_req(lmq, oxend, pubkey).get()
+    quos = get_quorums_future(lmq, oxend, info.get()['height'])
+
 
     if 'service_node_states' not in sn or not sn['service_node_states']:
         return flask.render_template('not_found.html',
@@ -442,6 +446,7 @@ def show_sn(pubkey):
             info=info.get(),
             hf=hfinfo.get(),
             sn=sn,
+            quorums=get_quorums(quos)
             )
 
 

templates/sn.html

@@ -124,6 +124,28 @@
         {%if sn.swarm_id == 18446744073709551615%}(none){%else%}0x{{'{:016x}'.format(sn.swarm_id)}}{%endif%}
     </span>
 
+    <!--<pre>{{quorums}}</pre>-->
+    {%set next_test = namespace(height=none)%}
+    {%for q in quorums.obligation[-13:]%}
+      {%if next_test.height%}{%break%}{%endif%}
+      {%if q.height + 13 >= info.height%}
+        {%for w in q.quorum.workers%}
+          {%if w == sn.service_node_pubkey%}
+            {%set next_test.height = q.height + 13%}
+            {%break%}
+          {%endif%}
+        {%endfor%}
+      {%endif%}
+    {%endfor%}
+    <span title="Next SN test">
+      <label>Next SN test:</label>
+      {%if next_test.height%}
+        Block {{next_test.height}}
+        ({%if next_test.height == info.height%}Now!{%else%}~{{((next_test.height - info.height) * 120) | reltime(in_ago=false)}}{%endif%})
+      {%else%}
+        <span title="&gt;12 blocks (~24 minutes): future test quorums are only known 12 blocks in advance">Unknown</span>
+      {%endif%}
+    </span>
 
   </h4>