Get dispute details before the deadline

from clickruntime import on_event, credentials, http, notify

API = "https://api-m.paypal.com"

def paypal_headers():
    resp = http.post(f"{API}/v1/oauth2/token", data={"grant_type": "client_credentials"},
                     auth=(credentials.secret("PAYPAL_CLIENT_ID"), credentials.secret("PAYPAL_CLIENT_SECRET")))
    resp.raise_for_status()
    return {"Authorization": f"Bearer {resp.json()['access_token']}"}

@on_event
def handle(event):
    body = event.json
    if body.get("event_type") != "CUSTOMER.DISPUTE.CREATED":
        return {"emailed": False}
    d = http.get(f"{API}/v1/customer/disputes/{body['resource']['dispute_id']}", headers=paypal_headers()).json()
    amount = d["dispute_amount"]
    txn = d["disputed_transactions"][0]["seller_transaction_id"]
    notify.email_me(f"PayPal dispute opened: {amount['currency_code']} {amount['value']}",
                    f"Reason: {d['reason']}\nAmount: {amount['currency_code']} {amount['value']}\n"
                    f"Transaction: {txn}\nRespond by: {d.get('seller_response_due_date', 'not set')}\n"
                    f"https://www.paypal.com/resolutioncenter")
    return {"dispute": d["dispute_id"]}