email_server: Merge domain configuration with app view

Test:

- Submit the domain form unchanged. Message is printed that settings are
unchanged.

- Submit the domain form with changes. Message is printed that domain has been
updated. Configuration reflects the new domain.

- On page load, the current domain is shown in the domain configuration form.

- Clicking the repair button the service alert section triggers the repair
operations as seen in the console.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>

plinth/modules/email_server/templates/email_server.html

@@ -11,10 +11,6 @@
 {% endblock %}
 
 {% block subsubmenu %}
-  <a class="btn btn-default" role="button"
-     href="{% url 'email_server:domains' %}">
-    {% trans "Domains" %}
-  </a>
   <a class="btn btn-default" role="button" href="/rspamd/">
     {% trans "Manage Spam" %}
     <span class="fa fa-external-link"></span>

plinth/modules/email_server/urls.py

@@ -8,8 +8,6 @@ from . import views
 
 urlpatterns = [
     path('apps/email_server/', views.EmailServerView.as_view(), name='index'),
-    path('apps/email_server/domains', views.DomainsView.as_view(),
-         name='domains'),
     path('apps/email_server/my_aliases',
          non_admin_view(views.AliasView.as_view()), name='aliases'),
     path('apps/email_server/config.xml', public(views.XmlView.as_view())),

plinth/modules/email_server/views.py

@@ -44,16 +44,25 @@ class ExceptionsMixin(View):
 class EmailServerView(ExceptionsMixin, AppView):
     """Server configuration page"""
     app_id = 'email_server'
+    form_class = forms.DomainForm
     template_name = 'email_server.html'
     audit_modules = ('tls', 'rcube')
 
+    def get_initial(self):
+        """Return the initial values to populate in the form."""
+        initial = super().get_initial()
+        domains = audit.domain.get_domains()
+        initial['primary_domain'] = domains['primary_domain']
+        return initial
+
     def get_context_data(self, *args, **kwargs):
+        context = super().get_context_data(*args, **kwargs)
+
         dlist = []
         for module_name in self.audit_modules:
             self._get_audit_results(module_name, dlist)
         dlist.sort(key=audit.models.Diagnosis.sorting_key)
 
-        context = super().get_context_data(*args, **kwargs)
         context['related_diagnostics'] = dlist
         return context
 
@@ -75,12 +84,29 @@ class EmailServerView(ExceptionsMixin, AppView):
 
     def post(self, request):
         repair_field = request.POST.get('repair')
-        module_name, sep, action_name = repair_field.partition('.')
-        if not sep or module_name not in self.audit_modules:
-            return HttpResponseBadRequest('Bad post data')
+        if repair_field:
+            module_name, sep, action_name = repair_field.partition('.')
+            if not sep or module_name not in self.audit_modules:
+                return HttpResponseBadRequest('Bad post data')
 
-        self._repair(module_name, action_name)
-        return redirect(request.path)
+            self._repair(module_name, action_name)
+            return redirect(request.path)
+
+        return super().post(request)
+
+    def form_valid(self, form):
+        """Update the settings for changed domain values."""
+        old_data = form.initial
+        new_data = form.cleaned_data
+        if old_data['primary_domain'] != new_data['primary_domain']:
+            try:
+                audit.domain.set_domains(new_data['primary_domain'])
+                messages.success(self.request, _('Configuration updated'))
+            except Exception:
+                messages.success(self.request,
+                                 _('An error occurred during configuration.'))
+
+        return super().form_valid(form)
 
     def _repair(self, module_name, action_name):
         """Repair the configuration of the given audit module."""
@@ -180,43 +206,6 @@ class AliasView(FormView):
         aliases_module.put(username, form.cleaned_data['alias'])
 
 
-class DomainsView(FormView):
-    """View to allow editing domain related settings."""
-    template_name = 'form.html'
-    form_class = forms.DomainForm
-    prefix = 'domain'
-    success_url = reverse_lazy('email_server:domains')
-
-    def get_initial(self):
-        """Return the initial values to populate in the form."""
-        initial = super().get_initial()
-        domains = audit.domain.get_domains()
-        initial['primary_domain'] = domains['primary_domain']
-        return initial
-
-    def get_context_data(self, **kwargs):
-        """Add the title to the document."""
-        context = super().get_context_data(**kwargs)
-        context['title'] = _('Domains')
-        return context
-
-    def form_valid(self, form):
-        """Update the settings for changed domain values."""
-        old_data = form.initial
-        new_data = form.cleaned_data
-        if old_data['primary_domain'] != new_data['primary_domain']:
-            try:
-                audit.domain.set_domains(new_data['primary_domain'])
-                messages.success(self.request, _('Configuration updated'))
-            except Exception:
-                messages.success(self.request,
-                                 _('An error occurred during configuration.'))
-        else:
-            messages.info(self.request, _('Setting unchanged'))
-
-        return super().form_valid(form)
-
-
 class XmlView(TemplateView):
     template_name = 'email_autoconfig.xml'