from celery import shared_task
from django.utils import timezone

from apps.integrations.odoo.services import OdooInvoiceService
from apps.invoicing.models import Invoice


@shared_task(bind=True, max_retries=5, default_retry_delay=60)
def sync_invoice_to_odoo(self, invoice_id):
    """Synchronize an invoice to Odoo with automatic retry (idempotent)."""
    try:
        invoice = Invoice.objects.get(pk=invoice_id)
    except Invoice.DoesNotExist:
        return
    if invoice.sync_state == Invoice.SyncState.SYNCHRONIZED:
        return  # already synchronized; retries must be idempotent

    invoice.sync_state = Invoice.SyncState.PROCESSING
    invoice.save(update_fields=["sync_state"])
    try:
        result = OdooInvoiceService().sync_invoice(invoice)
        invoice.odoo_invoice_id = result.get("id", "")
        invoice.sync_state = Invoice.SyncState.SYNCHRONIZED
        invoice.synced_at = timezone.now()
        invoice.save(update_fields=["odoo_invoice_id", "sync_state", "synced_at"])
    except Exception as exc:
        invoice.sync_state = Invoice.SyncState.RETRYING
        invoice.last_error = str(exc)
        invoice.save(update_fields=["sync_state", "last_error"])
        raise self.retry(exc=exc)