Add option to filter launches by orbit

templates/launches.html

@@ -39,6 +39,21 @@
   {% endfor %}
   </p>
 
+  <p>Orbit:
+  {% if request.args.orbit %}<a href="{{ request.path }}">🗙</a>{% endif %}
+
+  {% for name, abbrev in orbits | sort %}
+      {% if abbrev == request.args.orbit %}
+        <strong>{{ name }}</strong>
+      {% else %}
+        <a href="?orbit={{ abbrev }}" class="text-nowrap">
+        {{ name }}
+        </a>
+      {% endif %}
+      {% if not loop.last %} | {% endif %}
+  {% endfor %}
+  </p>
+
   {% for launch in launches %}
     {% set highlight =" bg-primary-subtle" if launch.slug in config.FOLLOW_LAUNCHES else "" %}
     {% set country = get_country(launch.country_code) %}

web_view.py

@@ -150,14 +150,21 @@ def launch_list() -> str:
     data_dir = app.config["DATA_DIR"]
     rocket_dir = os.path.join(data_dir, "thespacedevs")
     launches = agenda.thespacedevs.get_launches(rocket_dir, limit=100)
+    assert launches
 
     mission_type_filter = flask.request.args.get("type")
     rocket_filter = flask.request.args.get("rocket")
+    orbit_filter = flask.request.args.get("orbit")
 
     mission_types = {
         launch["mission"]["type"] for launch in launches if launch["mission"]
     }
 
+    orbits = {
+        (launch["orbit"]["name"], launch["orbit"]["abbrev"])
+        for launch in launches
+        if launch.get("orbit")
+    }
     rockets = {launch["rocket"]["full_name"] for launch in launches}
 
     launches = [
@@ -168,6 +175,10 @@ def launch_list() -> str:
             or (launch["mission"] and launch["mission"]["type"] == mission_type_filter)
         )
         and (not rocket_filter or launch["rocket"]["full_name"] == rocket_filter)
+        and (
+            not orbit_filter
+            or (launch.get("orbit") and launch["orbit"]["abbrev"] == orbit_filter)
+        )
     ]
 
     return flask.render_template(
@@ -177,6 +188,7 @@ def launch_list() -> str:
         now=now,
         get_country=agenda.get_country,
         mission_types=mission_types,
+        orbits=orbits,
     )