Error Handling

{
  "message": "Human-readable description of the error."
}

{
  "message": "The given data was invalid.",
  "errors": {
    "bank": ["The bank field is required."],
    "transaction_number": ["The transaction number field is required."]
  }
}

{ "message": "Unauthenticated." }

{ "message": "Unsupported bank: xyz" }

{ "success": false, "exists": false, "message": "Transaction not found." }

{ "message": "Monthly verification limit reached. Please upgrade your plan." }

async function verifyWithRetry(payload, maxAttempts = 3) {
  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
    const res = await fetch("https://api.check.et/api/v1/verify", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${process.env.CHECK_ET_API_KEY}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify(payload),
    })

    if (res.status !== 500 && res.status !== 429) {
      return res.json()
    }

    const delay = Math.min(1000 * 2 ** attempt, 30000)
    await new Promise((r) => setTimeout(r, delay))
  }
  throw new Error("Max retry attempts reached")
}