store/dash: add 'last update X hours ago' info at the bottom

store/app.py

@@ -91,6 +91,14 @@ def days_ago(timestamp):
     return int((time.time() - timestamp) / (60 * 60 * 24))
 
 
+@app.template_filter("hours_ago")
+def hours_ago(timestamp):
+    d = datetime.now() - datetime.fromtimestamp(timestamp)
+    hours = int(divmod(d.total_seconds(), 3600)[0])
+    minutes = int(divmod(d.total_seconds(), 60)[1])
+    return f"{hours}:{minutes}h"
+
+
 @app.template_filter("format_datetime")
 def format_datetime(value, format="%d %b %Y %I:%M %p"):
     if value is None:
@@ -469,7 +477,7 @@ def dash():
     stars = get_stars()
     data = dict(sorted(get_dashboard_data().items(), key=lambda app: len(stars.get(app[0], [])), reverse=True))
 
-    return render_template("dash.html", data=data, stars=stars)
+    return render_template("dash.html", data=data, stars=stars, last_data_update=get_dashboard_data.mtime)
 
 
 @app.route("/charts")

store/templates/dash.html

@@ -202,6 +202,7 @@
 
 <div id="nbEntriesFound" class="text-center text-gray-600 text-sm py-3"></div>
 
+<div class="text-center text-gray-600 text-sm py-3">{{ _("Last data update %(time)s ago", time=last_data_update|hours_ago) }}</div>
 
 <script type="text/javascript">