First commit

apps/channel_gateway/app/adapters/whatsapp.py

@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+from app.schemas import BusinessContext, GatewayRequest, WhatsAppWebhook
+from app.settings import settings
+
+
+class WhatsAppAdapter:
+    name = 'whatsapp'
+
+    async def to_gateway_request(self, payload: WhatsAppWebhook) -> GatewayRequest:
+        user_id = payload.wa_id or payload.from_
+        text = payload.message or payload.text or payload.interactive_title or payload.interactive_id
+        if not text:
+            raise ValueError('INVALID_WHATSAPP_PAYLOAD: message/text/interactive_title is required')
+        session_id = payload.session_id or user_id
+        message_id = payload.message_id or payload.interaction_key
+        bc = BusinessContext(
+            customer_key=payload.customer_key or user_id,
+            contract_key=payload.contract_key,
+            interaction_key=payload.interaction_key or message_id,
+            session_key=session_id,
+            metadata={'source_channel': 'whatsapp', **(payload.metadata or {})},
+        )
+        data = {
+            'message': text,
+            'session_id': session_id,
+            'user_id': user_id,
+            'message_id': message_id,
+            'customer_key': bc.customer_key,
+            'contract_key': bc.contract_key,
+            'interaction_key': bc.interaction_key,
+            'session_key': bc.session_key,
+            'business_context': bc.model_dump(exclude_none=True),
+            'metadata': {
+                **(payload.metadata or {}),
+                'external_gateway': settings.APP_NAME,
+                'source_channel': 'whatsapp',
+                'interactive_id': payload.interactive_id,
+                'contract_version': 'gateway-request-v1',
+            },
+        }
+        return GatewayRequest(channel='whatsapp', tenant_id=settings.DEFAULT_TENANT_ID, agent_id=settings.DEFAULT_AGENT_ID, payload=data)