post updates on mastodon

froide_govplan/apps.py

@@ -1,7 +1,6 @@
 from django.apps import AppConfig
 from django.utils.translation import gettext_lazy as _
 
-
 class FroideGovPlanConfig(AppConfig):
     name = "froide_govplan"
     verbose_name = _("GovPlan App")
@@ -18,3 +17,5 @@ class FroideGovPlanConfig(AppConfig):
         api_router.register(
             r"governmentplan", GovernmentPlanViewSet, basename="governmentplan"
         )
+
+        from . import signals

froide_govplan/signals.py

@@ -0,0 +1,35 @@
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.conf import settings
+from django.db import transaction
+from mastodon import Mastodon
+from .models import GovernmentPlanUpdate, GovernmentPlan
+import re
+
+def strip_html_tags(text):
+    tag_re = re.compile(r'<[^>]+>')
+    return tag_re.sub('', text)
+
+def post_to_mastodon(text):
+    mastodon = Mastodon(
+        access_token=settings.MASTODON_ACCESS_TOKEN,
+        api_base_url=settings.MASTODON_API_BASE_URL
+    )
+    mastodon.status_post(text)
+
+@receiver(post_save, sender=GovernmentPlanUpdate)
+def send_mastodon_toot_update(sender, instance, created, **kwargs):
+    if created and instance.public:
+        transaction.on_commit(lambda: post_to_mastodon(
+            f"Neue Entwicklung im Verwaltungsvorhaben: {instance.plan.title}!\n\n"
+            f"{instance.title}: {strip_html_tags(instance.content)}\n\n"
+            f"Mehr Informationen: {instance.plan.reference} #karlsruhe"
+        ))
+
+@receiver(post_save, sender=GovernmentPlan)
+def send_mastodon_toot_plan(sender, instance, created, **kwargs):
+    if created and instance.public:
+        transaction.on_commit(lambda: post_to_mastodon(
+            f"Neues Verwaltungsvorhaben '{instance.title}' wurde aufgenommen.\n\n"
+            f"Mehr Informationen: {instance.reference} #karlsruhe"
+        ))