Initial commit

site/directmail/channels/__init__.py

@@ -0,0 +1,21 @@
+"""Channel dispatch — postcard / direct mail."""
+
+from dataclasses import dataclass
+
+from contacts.models import Channel
+from directmail.models import Message
+from directmail.providers.postcard import get_postcard_provider
+
+
+@dataclass
+class ProviderResult:
+    provider: str
+    provider_id: str
+
+
+def dispatch_message(message: Message) -> ProviderResult:
+    if message.channel == Channel.POSTCARD:
+        provider = get_postcard_provider()
+        result = provider.send_postcard(message)
+        return ProviderResult(provider=provider.name, provider_id=result.provider_id)
+    raise ValueError(f"Unsupported channel: {message.channel}")