backups: Add apps selection to restore form

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
Reviewed-by: Joseph Nuthalapati <njoseph@thoughtworks.com>

plinth/modules/backups/forms.py

@@ -57,3 +57,19 @@ class ExportArchiveForm(forms.Form):
         """Initialize the form with disk choices."""
         super().__init__(*args, **kwargs)
         self.fields['disk'].choices = get_export_locations()
+
+
+class RestoreForm(forms.Form):
+    selected_apps = forms.MultipleChoiceField(
+        label=_('Restore apps'),
+        help_text=_('Apps data to restore from the backup'),
+        widget=forms.CheckboxSelectMultiple)
+
+    def __init__(self, *args, **kwargs):
+        """Initialize the form with selectable apps."""
+        super().__init__(*args, **kwargs)
+        apps = _list_of_all_apps_for_backup()
+        # TODO: Only list apps included in the backup file.
+        self.fields['selected_apps'].choices = [
+            (app[0], app[1].name) for app in apps]
+        self.fields['selected_apps'].initial = [app[0] for app in apps]

plinth/modules/backups/templates/backups_restore.html

@@ -47,6 +47,8 @@
     <form class="form" method="post">
       {% csrf_token %}
 
+      {{ form|bootstrap }}
+
       <input type="submit" class="btn btn-danger"
              value="{% blocktrans trimmed %}
                       Restore data from {{ name }}

plinth/modules/backups/views.py

@@ -31,7 +31,7 @@ from urllib.parse import unquote
 
 from plinth.modules import backups
 from .backups import _list_of_all_apps_for_backup
-from .forms import CreateArchiveForm, ExportArchiveForm
+from .forms import CreateArchiveForm, ExportArchiveForm, RestoreForm
 
 
 class IndexView(TemplateView):
@@ -125,9 +125,13 @@ class ExportArchiveView(SuccessMessageMixin, FormView):
         return super().form_valid(form)
 
 
-class RestoreView(SuccessMessageMixin, TemplateView):
+class RestoreView(SuccessMessageMixin, FormView):
     """View to restore files from an exported archive."""
+    form_class = RestoreForm
+    prefix = 'backups'
     template_name = 'backups_restore.html'
+    success_url = reverse_lazy('backups:index')
+    success_message = _('Restored files from backup.')
 
     def get_context_data(self, **kwargs):
         """Return additional context for rendering the template."""
@@ -137,8 +141,9 @@ class RestoreView(SuccessMessageMixin, TemplateView):
         context['name'] = self.kwargs['name']
         return context
 
-    def post(self, request, label, name):
+    def form_valid(self, form):
         """Restore files from the archive on valid form submission."""
-        backups.restore_exported(label, name)
-        messages.success(request, _('Restored data from backup.'))
-        return redirect(reverse_lazy('backups:index'))
+        backups.restore_exported(unquote(self.kwargs['label']),
+                                 self.kwargs['name'],
+                                 form.cleaned_data['selected_apps'])
+        return super().form_valid(form)