44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
from fastapi import APIRouter, Depends, HTTPException, status
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from core.rabbitmq import publish_ticket_paid_event
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from database.models import Ticket, TicketStatus
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from database.session import get_db
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from schemas.payment import PaymentWebhookRequest
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router = APIRouter(prefix="/api/webhooks", tags=["webhooks"])
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@router.post("/payment", status_code=status.HTTP_200_OK)
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async def payment_webhook(
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body: PaymentWebhookRequest,
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db: AsyncSession = Depends(get_db),
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) -> dict[str, str]:
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result = await db.execute(select(Ticket).where(Ticket.id == body.ticket_id))
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ticket: Ticket | None = result.scalar_one_or_none()
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if ticket is None:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail=f"Ticket {body.ticket_id} not found",
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)
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# Idempotency guard: повторный запрос с тем же ключом — возвращаем 200 без действий
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if ticket.idempotency_key == body.idempotency_key:
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return {"detail": "Already processed"}
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if ticket.status != TicketStatus.LOCKED:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail=f"Ticket is in '{ticket.status}' state, expected 'LOCKED'",
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)
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ticket.status = TicketStatus.PAID
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ticket.idempotency_key = body.idempotency_key
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await db.commit()
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await publish_ticket_paid_event(ticket_id=ticket.id, user_id=ticket.user_id or 0)
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return {"detail": "Payment processed"}
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