networks: First boot view for network topology wizard

Signed-off-by: Nektarios Katakis <iam@nektarioskatakis.xyz>
[sunil: Use the term 'network topology' consistently]
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/modules/networks/templates/network_topology_firstboot.html

@@ -0,0 +1,24 @@
+{% extends "base_firstboot.html" %}
+{% comment %}
+# SPDX-License-Identifier: AGPL-3.0-or-later
+{% endcomment %}
+
+{% load bootstrap %}
+{% load i18n %}
+{% load static %}
+
+{% block content %}
+  {% include "network_topology_content.html" %}
+
+  <form class="form" method="post">
+    {% csrf_token %}
+
+    {{ form|bootstrap }}
+
+    <input type="submit" class="btn btn-link" name="skip"
+           value="{% trans "Skip this step" %}"/>
+    <input type="submit" class="btn btn-primary pull-right" name="next"
+           value="{% trans "Next" %}"/>
+  </form>
+
+{% endblock %}

plinth/modules/networks/views.py

@@ -421,6 +421,23 @@ class NetworkTopologyView(FormView):
         return super().form_valid(form)
 
 
+class NetworkTopologyFirstBootView(NetworkTopologyView):
+    """View for network topology form during first wizard."""
+    template_name = 'network_topology_firstboot.html'
+
+    def get_success_url(self):
+        """Return next fistboot step."""
+        return reverse_lazy(first_boot.next_step())
+
+    def form_valid(self, form):
+        """Mark the first wizard step as done, save value and redirect."""
+        first_boot.mark_step_done('network_topology_wizard')
+        if 'skip' in form.data:
+            return FormView.form_valid(self, form)
+
+        return super().form_valid(form)
+
+
 class RouterConfigurationView(FormView):
     """View for router configuration form."""
     template_name = 'router_configuration_update.html'