import asyncio
from typing import Any, Dict

# Import decorator and logger from the worker so handlers can register themselves
from .queue_worker import register_task_handler, logger


@register_task_handler("email")
async def handle_email_task(payload: Dict[str, Any]) -> None:
    """Handle 'email' tasks dispatched by the queue worker.

    Expected payload schema:
    {
        "type": "email",
        "to": "recipient@example.com",
        "subject": "Subject text",
        "body": "Email body text"
    }
    """
    to = payload.get("to")
    subject = payload.get("subject")
    body = payload.get("body")
    if not (to and subject and body):
        logger.error("Email task missing fields. Payload: %s", payload)
        return

    # Placeholder for real email sending logic
    await asyncio.sleep(0)  # yield control, simulate async work
    logger.info("Email sent | to=%s | subject=%s | body_len=%d", to, subject, len(body))