Idempotency

curl -X POST https://api.bachs.io/v1/checkout-sessions \
  -H "Authorization: Bearer sk_live_..." \
  -H "Idempotency-Key: order_ORD-12345_attempt_1" \
  -H "Content-Type: application/json" \
  -d '{ ... }'

{
  "detail": "Idempotency-Key was already used with a different request",
  "error_code": "IDEMPOTENCY_CONFLICT"
}

import time
import requests
import uuid

def create_checkout_with_retry(payload, order_id, max_attempts=3):
    idempotency_key = f"checkout_{order_id}"
    headers = {
        "Authorization": "Bearer sk_live_...",
        "Idempotency-Key": idempotency_key,
        "Content-Type": "application/json",
    }

    for attempt in range(max_attempts):
        try:
            resp = requests.post(
                "https://api.bachs.io/v1/checkout-sessions",
                json=payload,
                headers=headers,
                timeout=30,
            )
            if resp.status_code < 500:
                return resp.json()
        except requests.Timeout:
            pass

        if attempt < max_attempts - 1:
            time.sleep(2 ** attempt)  # exponential backoff

    raise Exception("Max retries exceeded")