Place combo

PUBLIC_KEY="pk_live_abcdef123456"
SECRET_KEY="sk_live_secret789xyz"
TIMESTAMP=$(date +%s)
METHOD="POST"
URL_PATH="/v1/pm/combos"
BODY='{"quoteId":"7c1e9a52-4b3d-4f8e-9a61-2d5b8c0e3f47","selections":[{"marketId":"f6a7b8c9-d0e1-2345-fabc-678901234567","outcomeId":"01234567-89ab-cdef-0123-456789abcdef"},{"marketId":"c9d0e1f2-a3b4-5678-cdef-901234567890","outcomeId":"34567890-bcde-f012-3456-789abcdef012"},{"marketId":"d0e1f2a3-b4c5-6789-defa-012345678901","outcomeId":"45678901-cdef-0123-4567-89abcdef0123"}],"amount":10,"currency":"USD","maxPrice":0.18}'

BODY_HASH=$(printf '%s' "$BODY" | openssl dgst -sha256 -hex 2>/dev/null | sed 's/.*= //')
PAYLOAD="${TIMESTAMP}.${METHOD}.${URL_PATH}.${BODY_HASH}"
SIGNATURE=$(printf '%s' "$PAYLOAD" | openssl dgst -sha256 -hmac "$SECRET_KEY" -binary | base64)

curl -X POST "https://relay.bayse.markets${URL_PATH}" \
  -H "X-Public-Key: ${PUBLIC_KEY}" \
  -H "X-Timestamp: ${TIMESTAMP}" \
  -H "X-Signature: ${SIGNATURE}" \
  -H "Content-Type: application/json" \
  -d "$BODY"

import crypto from 'crypto';

const publicKey = 'pk_live_abcdef123456';
const secretKey = 'sk_live_secret789xyz';
const timestamp = Math.floor(Date.now() / 1000);
const method = 'POST';
const path = '/v1/pm/combos';
const body = JSON.stringify({
  quoteId: '7c1e9a52-4b3d-4f8e-9a61-2d5b8c0e3f47',
  selections: [
    { marketId: 'f6a7b8c9-d0e1-2345-fabc-678901234567', outcomeId: '01234567-89ab-cdef-0123-456789abcdef' },
    { marketId: 'c9d0e1f2-a3b4-5678-cdef-901234567890', outcomeId: '34567890-bcde-f012-3456-789abcdef012' },
    { marketId: 'd0e1f2a3-b4c5-6789-defa-012345678901', outcomeId: '45678901-cdef-0123-4567-89abcdef0123' },
  ],
  amount: 10,
  currency: 'USD',
  maxPrice: 0.18,
});

const bodyHash = crypto.createHash('sha256').update(body).digest('hex');
const payload = `${timestamp}.${method}.${path}.${bodyHash}`;
const signature = crypto
  .createHmac('sha256', secretKey)
  .update(payload)
  .digest('base64');

const response = await fetch(`https://relay.bayse.markets${path}`, {
  method,
  headers: {
    'X-Public-Key': publicKey,
    'X-Timestamp': timestamp.toString(),
    'X-Signature': signature,
    'Content-Type': 'application/json',
  },
  body,
});
if (!response.ok) {
  const { message = '' } = await response.json().catch(() => ({}));
  // 409 "already been placed": an earlier request with this quoteId went
  // through. Find that combo with List combos instead of placing another.
  // Any other 409: the price moved past maxPrice and nothing was placed.
  throw new Error(`Place combo failed: ${response.status} ${message}`);
}
const combo = await response.json();

import hmac, hashlib, base64, json, time, requests

public_key = 'pk_live_abcdef123456'
secret_key = 'sk_live_secret789xyz'
timestamp = int(time.time())
method = 'POST'
path = '/v1/pm/combos'
body = json.dumps({
    'quoteId': '7c1e9a52-4b3d-4f8e-9a61-2d5b8c0e3f47',
    'selections': [
        {'marketId': 'f6a7b8c9-d0e1-2345-fabc-678901234567', 'outcomeId': '01234567-89ab-cdef-0123-456789abcdef'},
        {'marketId': 'c9d0e1f2-a3b4-5678-cdef-901234567890', 'outcomeId': '34567890-bcde-f012-3456-789abcdef012'},
        {'marketId': 'd0e1f2a3-b4c5-6789-defa-012345678901', 'outcomeId': '45678901-cdef-0123-4567-89abcdef0123'},
    ],
    'amount': 10,
    'currency': 'USD',
    'maxPrice': 0.18,
})

body_hash = hashlib.sha256(body.encode()).hexdigest()
payload = f'{timestamp}.{method}.{path}.{body_hash}'
signature = base64.b64encode(
    hmac.new(secret_key.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

resp = requests.post(
    f'https://relay.bayse.markets{path}',
    headers={
        'X-Public-Key': public_key,
        'X-Timestamp': str(timestamp),
        'X-Signature': signature,
        'Content-Type': 'application/json',
    },
    data=body,
)
if not resp.ok:
    message = resp.json().get('message', '') if resp.content else ''
    # 409 "already been placed": an earlier request with this quoteId went
    # through. Find that combo with List combos instead of placing another.
    # Any other 409: the price moved past maxPrice and nothing was placed.
    raise RuntimeError(f'Place combo failed: {resp.status_code} {message}')
combo = resp.json()

import (
    "crypto/hmac"
    "crypto/sha256"
    "encoding/base64"
    "encoding/hex"
    "fmt"
    "net/http"
    "strconv"
    "strings"
    "time"
)

timestamp := time.Now().Unix()
method := "POST"
urlPath := "/v1/pm/combos"
body := []byte(`{"quoteId":"7c1e9a52-4b3d-4f8e-9a61-2d5b8c0e3f47","selections":[{"marketId":"f6a7b8c9-d0e1-2345-fabc-678901234567","outcomeId":"01234567-89ab-cdef-0123-456789abcdef"},{"marketId":"c9d0e1f2-a3b4-5678-cdef-901234567890","outcomeId":"34567890-bcde-f012-3456-789abcdef012"},{"marketId":"d0e1f2a3-b4c5-6789-defa-012345678901","outcomeId":"45678901-cdef-0123-4567-89abcdef0123"}],"amount":10,"currency":"USD","maxPrice":0.18}`)

bodySum := sha256.Sum256(body)
bodyHash := hex.EncodeToString(bodySum[:])
payload := fmt.Sprintf("%d.%s.%s.%s", timestamp, method, urlPath, bodyHash)
mac := hmac.New(sha256.New, []byte("sk_live_secret789xyz"))
mac.Write([]byte(payload))
signature := base64.StdEncoding.EncodeToString(mac.Sum(nil))

req, _ := http.NewRequest("POST", "https://relay.bayse.markets"+urlPath, strings.NewReader(string(body)))
req.Header.Set("X-Public-Key", "pk_live_abcdef123456")
req.Header.Set("X-Timestamp", strconv.FormatInt(timestamp, 10))
req.Header.Set("X-Signature", signature)
req.Header.Set("Content-Type", "application/json")
resp, _ := http.DefaultClient.Do(req)