Don't send data if not modified

blueprints/risdeveau/templates/index.html

@@ -17,6 +17,19 @@
     crossorigin="anonymous"
   ></script>
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta
+    name="htmx-config"
+    content='{
+      "responseHandling":[
+        {"code":"204", "swap": false},
+        {"code":"304", "swap": false},
+        {"code":"[23]..", "swap": true},
+        {"code":"422", "swap": true},
+        {"code":"[45]..", "swap": false, "error":true},
+        {"code":"...", "swap": true}
+      ]
+    }'
+  />
 </head>
 <body>
   <header>

blueprints/risdeveau/templates/listenbrainz.htm

@@ -10,11 +10,16 @@
   </div>
 {% endmacro %}
 
+{% if lb_now.data and lb.data %}
 <div
   class="block"
   hx-get="/m/listenbrainz"
   hx-trigger="every 15s"
   hx-swap="outerHTML"
+  hx-headers='{
+    "If-Modified-Since": {{ (lb_now.last_updated, lb.last_updated) | max | int }},
+    "If-None-Match": "{{ lb_etag() }}"
+  }'
 >
   <h2><a href="https://listenbrainz.org/user/risdeveau/">Listenbrainz</a></h2>
   {% if lb_now.data and lb_now.data.listens.0 %}
@@ -26,3 +31,4 @@
     {% endfor %}
   {% endif %}
 </div>
+{% endif %}

blueprints/risdeveau/templates/steam.htm

@@ -3,6 +3,10 @@
   hx-get="/m/steam"
   hx-trigger="every 1m"
   hx-swap="outerHTML"
+  hx-headers='{
+    "If-Modified-Since": {{ (recent.last_updated, owned.last_updated) | max | int }},
+    "If-None-Match": "{{ steam_etag() }}"
+  }'
 >
   <h2><a href="https://steamcommunity.com/id/risdeveau">Steam</a></h2>