notify script: handle organizations

Mail every owners of an organization when a repository belongs to an
organization.

notify_owners.py

@@ -103,9 +103,29 @@ def db_config_from_gitea():
 
 
 def fetch_mail_from_db(cur, user):
-    query = "select email from public.user where name = %s;"
+    query = "select id, email from public.user where name = %s;"
     cur.execute(query, (user,))
-    return cur.fetchone()[0]
+    uid, mail = cur.fetchone()
+    owners = [mail]
+
+    # Organizations don't have an email address
+    if not mail:
+        logging.debug("'%s' is an organization", user)
+        # Fetch organization id
+        query = (
+            "select id from public.team where org_id = %s and lower_name = 'owners';"
+        )
+        cur.execute(query, (uid,))
+        team_id = cur.fetchone()[0]
+
+        query = (
+            "select public.user.email from team_user INNER JOIN public.user"
+            " ON team_user.uid = public.user.id where team_user.team_id = %s;"
+        )
+        cur.execute(query, (team_id,))
+        owners = [x[0] for x in cur.fetchall()]
+
+    return owners
 
 
 def notify(smtp, repositories, agir_key, fetch_mail):
@@ -138,8 +158,9 @@ def notify(smtp, repositories, agir_key, fetch_mail):
             raise ValueError(f"URL not recognized ({url})")
         user, repository = urlsplit(url).path.split("/")[1:3]
         assert user and repository, f"Can not fetch user and repository from {url}"
-        user_email = fetch_mail(user)
-        logging.debug("Mail for '%s' is '%s'", user, user_email)
+        user_emails = fetch_mail(user)
+        assert user_emails, f"Unable to identify owners of {url}"
+        logging.debug("Mail for '%s' is '%s'", user, " ".join(user_emails))
         subject = SUBJECT_TMPL.substitute(repository=repository)
         message = MAIL_TMPL.substitute(
             user=user, repository=repository, animsys=animsys
@@ -149,11 +170,11 @@ def notify(smtp, repositories, agir_key, fetch_mail):
         email.set_content(message)
         email["Subject"] = subject
         email["From"] = FORGE_ML
-        email["To"] = user_email
+        email["To"] = ", ".join(user_emails)
         email["CC"] = FORGE_ML
 
         smtp.send_message(email)
-        logging.debug("Mail to '%s' (%s) sent for %s.", user, user_email, url)
+        logging.debug("Mail to '%s' (%s) sent for %s.", user, email["To"], url)
 
         issue_api = f"{AGIR_URL}/issues/5615.json"
         req = requests.put(