Scaffold containerized Django/Wagtail app with core features

apps/core/consent.py

@@ -0,0 +1,59 @@
+from __future__ import annotations
+
+import time
+from dataclasses import dataclass
+from urllib.parse import parse_qs, urlencode
+
+from django.conf import settings
+
+CONSENT_COOKIE_NAME = "nhAiConsent"
+
+
+@dataclass
+class ConsentState:
+    analytics: bool = False
+    advertising: bool = False
+    policy_version: int = 0
+    timestamp: int = 0
+
+    @property
+    def requires_prompt(self) -> bool:
+        return self.policy_version != settings.CONSENT_POLICY_VERSION
+
+
+class ConsentService:
+    @staticmethod
+    def get_consent(request) -> ConsentState:
+        raw = request.COOKIES.get(CONSENT_COOKIE_NAME, "")
+        if not raw:
+            return ConsentState()
+
+        try:
+            data = {k: v[0] for k, v in parse_qs(raw).items()}
+            return ConsentState(
+                analytics=data.get("a", "0") == "1",
+                advertising=data.get("d", "0") == "1",
+                policy_version=int(data.get("v", "0")),
+                timestamp=int(data.get("ts", "0")),
+            )
+        except (ValueError, AttributeError):
+            return ConsentState()
+
+    @staticmethod
+    def set_consent(response, *, analytics: bool, advertising: bool) -> None:
+        payload = urlencode(
+            {
+                "a": int(analytics),
+                "d": int(advertising),
+                "v": settings.CONSENT_POLICY_VERSION,
+                "ts": int(time.time()),
+            }
+        )
+        response.set_cookie(
+            CONSENT_COOKIE_NAME,
+            payload,
+            max_age=60 * 60 * 24 * 365,
+            httponly=False,
+            samesite="Lax",
+            secure=not settings.DEBUG,
+        )