クーポンの作成

import { WaffoPancake } from "@waffo/pancake-ts";

const client = new WaffoPancake({
  merchantId: process.env.WAFFO_MERCHANT_ID!,
  privateKey: process.env.WAFFO_PRIVATE_KEY!,
});

const { coupon } = await client.coupons.create(
  {
    storeId: "STO_2aUyqjCzEIiEcYMKj7TZtw",
    name: "Black Friday 20% off",
    discount: { type: "percentage", percentOff: 20 },
    duration: "repeating",
    durationInPeriods: 3,
    maxRedemptions: 1000,
    redeemBy: "2026-12-01T00:00:00.000Z",
    code: "bf2026",
    promotionCodes: [{ code: "bf-new", restrictions: { perCustomerLimit: 1 } }],
  },
  { idempotencyKey: "MER_2aUyqjCzEIiEcYMKj7TZtw-0f8e2a9c-5b1d-4e7a-9c3f-2d6b8e1a4c70" },
);
console.log(coupon.status, coupon.code, coupon.promotionCodes[0].code); // => "active" "BF2026" "BF-NEW"

MERCHANT_ID="MER_2aUyqjCzEIiEcYMKj7TZtw"
IDEMPOTENCY_KEY="MER_2aUyqjCzEIiEcYMKj7TZtw-0f8e2a9c-5b1d-4e7a-9c3f-2d6b8e1a4c70"
TIMESTAMP=$(date +%s)
BODY='{"storeId":"STO_2aUyqjCzEIiEcYMKj7TZtw","name":"Black Friday 20% off","discount":{"type":"percentage","percentOff":20},"duration":"repeating","durationInPeriods":3,"maxRedemptions":1000,"redeemBy":"2026-12-01T00:00:00.000Z","code":"bf2026","promotionCodes":[{"code":"bf-new","restrictions":{"perCustomerLimit":1}}]}'
BODY_HASH=$(echo -n "$BODY" | openssl dgst -sha256 -binary | base64 | tr -d '\n')
CANONICAL_REQUEST="POST
/v1/actions/coupon/create-coupon
$TIMESTAMP
$BODY_HASH"

SIGNATURE=$(echo -n "$CANONICAL_REQUEST" | openssl dgst -sha256 -sign private_key.pem | base64 | tr -d '\n')

curl -X POST "https://api.waffo.ai/v1/actions/coupon/create-coupon" \
  -H "Content-Type: application/json" \
  -H "X-Merchant-Id: $MERCHANT_ID" \
  -H "X-Timestamp: $TIMESTAMP" \
  -H "X-Signature: $SIGNATURE" \
  -H "X-Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d "$BODY"

import hashlib, time, base64, json, requests
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.asymmetric import padding

merchant_id = "MER_2aUyqjCzEIiEcYMKj7TZtw"
timestamp = str(int(time.time()))
body = {
    "storeId": "STO_2aUyqjCzEIiEcYMKj7TZtw",
    "name": "Black Friday 20% off",
    "discount": {"type": "percentage", "percentOff": 20},
    "duration": "repeating",
    "durationInPeriods": 3,
    "maxRedemptions": 1000,
    "redeemBy": "2026-12-01T00:00:00.000Z",
    "code": "bf2026",
    "promotionCodes": [{"code": "bf-new", "restrictions": {"perCustomerLimit": 1}}],
}

body_json = json.dumps(body, separators=(",", ":"))
body_hash = base64.b64encode(hashlib.sha256(body_json.encode()).digest()).decode()
path = "/v1/actions/coupon/create-coupon"
canonical = f"POST\n{path}\n{timestamp}\n{body_hash}"

with open("private_key.pem", "rb") as f:
    private_key = serialization.load_pem_private_key(f.read(), password=None)

signature = base64.b64encode(
    private_key.sign(canonical.encode(), padding.PKCS1v15(), hashes.SHA256())
).decode()

resp = requests.post(
    f"https://api.waffo.ai{path}",
    headers={
        "Content-Type": "application/json",
        "X-Merchant-Id": merchant_id,
        "X-Timestamp": timestamp,
        "X-Signature": signature,
        "X-Idempotency-Key": "MER_2aUyqjCzEIiEcYMKj7TZtw-0f8e2a9c-5b1d-4e7a-9c3f-2d6b8e1a4c70",
    },
    data=body_json,
)
print(resp.json())