"""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}")