Idempotencia

curl -X POST https://api.thalbank.com/transactions \
  -H "Idempotency-Key: 550e8400-e29b-41d4-a716-446655440000" \
  -H "x-api-key: sua_api_key" \
  -H "Content-Type: application/json" \
  -d '{ "amount": 1500, "method": "PIX", ... }'

const idempotencyKey = crypto.randomUUID(); // gere UMA vez

async function createTransaction(data, retries = 3) {
  for (let i = 0; i < retries; i++) {
    try {
      const response = await fetch("https://api.thalbank.com/transactions", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
          "x-api-key": process.env.THALPAY_API_KEY,
          "Idempotency-Key": idempotencyKey, // mesma key em todos os retries
        },
        body: JSON.stringify(data),
      });
      return await response.json();
    } catch (err) {
      if (i === retries - 1) throw err;
    }
  }
}