Error Handling

{
  "status": {
    "code": 200,
    "message": "Success"
  },
  "data": {
    // Response data here
  }
}

{
  "status": {
    "code": "ERROR_CODE",
    "message": "Human-readable error description"
  },
  "data": null
}

// Generate external reference: 10-digit timestamp + 6 alphanumeric
function generateReference() {
  const timestamp = Math.floor(Date.now() / 1000);
  const chars =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  let suffix = "";
  for (let i = 0; i < 6; i++) {
    suffix += chars.charAt(Math.floor(Math.random() * chars.length));
  }
  return `${timestamp}${suffix}`;
}

async function makePurchase(productId, phoneNumber, amount) {
  try {
    const response = await fetch(
      "https://my.rizpay.app/api/partners/v1/purchases",
      {
        method: "POST",
        headers: {
          Authorization: `Bearer ${API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          product_id: productId,
          phone_number: phoneNumber,
          amount: amount,
          external_reference: generateReference(),
        }),
      }
    );

    const data = await response.json();

    if (!response.ok) {
      // Handle specific error codes
      switch (data.status.code) {
        case "INSUFFICIENT_BALANCE":
          throw new Error("Please fund your account");
        case "INVALID_PHONE_NUMBER":
          throw new Error("Please enter a valid phone number");
        case "DUPLICATE_REFERENCE":
          throw new Error("This transaction was already processed");
        case "RATE_LIMIT_EXCEEDED":
          const retryAfter = response.headers.get("Retry-After");
          throw new Error(
            `Too many requests. Retry after ${retryAfter} seconds`
          );
        default:
          throw new Error(data.status.message);
      }
    }

    return data.data;
  } catch (error) {
    console.error("Purchase failed:", error.message);
    throw error;
  }
}