feat(create_user): Send an email with the credentials reset link

src/dgsi/views.py

@@ -1,5 +1,7 @@
 from asgiref.sync import async_to_sync
 from django.contrib.auth.mixins import LoginRequiredMixin
+from django.core.mail import EmailMessage
+from django.template.loader import render_to_string
 from django.urls import reverse_lazy
 from django.views.generic import FormView, TemplateView
 
@@ -30,6 +32,8 @@ class CreateKanidmAccountView(StaffRequiredMixin, FormView):
 
     @async_to_sync
     async def form_valid(self, form):
+        ttl = 86400  # 24h
+
         d = form.cleaned_data
 
         # Create the base account
@@ -42,6 +46,26 @@ class CreateKanidmAccountView(StaffRequiredMixin, FormView):
         if d["active"]:
             await client.group_add_members("dgnum_members", [d["name"]])
 
-        # TODO: Generate a reset token, and update it
+        # FIXME: Will maybe change when kanidm gets its shit together and switches to POST
+        r = await client.call_get(
+            f"/v1/person/{d['name']}/_credential/_update_intent/{ttl}"
+        )
+
+        assert r.data is not None
+
+        token: str = r.data["token"]
+        link = f"https://sso.dgnum.eu/ui/reset?token={token}"
+
+        # Send an email to the new user with the given email address
+        EmailMessage(
+            subject="Réinitialisation de mot de passe DGNum -- DGNum password reset",
+            body=render_to_string(
+                "mail/credentials_reset.txt",
+                context={"link": link},
+            ),
+            from_email="To Be Determined <dgsi@infra.dgnum.eu>",
+            to=[d["mail"]],
+            headers={"Reply-To": "contact@dgnum.eu"},
+        ).send()
 
         return super().form_valid(form)

src/shared/templates/mail/credentials_reset.txt

@@ -0,0 +1,17 @@
+Bonjour,
+
+Une demande de réinitialisation de votre mot de passe DGNum a été effectuée.
+
+Pour mettre à jour vos moyens de connexion, merci de vous rendre à l'adresse : {{ link }}
+
+-- 
+
+Hello,
+
+A request to reset your DGNum password has been made.
+
+To update your login details, please go to: {{ link }}
+
+
+Bien cordialement,
+La Délégation Générale Numérique