Get a Friday summary of invoices you sent

from datetime import date, timedelta
from clickruntime import on_trigger, credentials, http, notify

BUSINESS_ID = "your-wave-business-id"

def wave(query, variables=None):
    token = credentials.connection("wave", "work")
    resp = http.post("https://gql.waveapps.com/graphql/public", headers={"Authorization": f"Bearer {token}"},
                     json={"query": query, "variables": {"biz": BUSINESS_ID, **(variables or {})}})
    return resp.json()["data"]["business"]

QUERY = """query($biz: ID!, $start: Date!) { business(id: $biz) { invoices(invoiceDateStart: $start, pageSize: 100) {
  edges { node { invoiceNumber status customer { name } total { value } } } } } }"""

@on_trigger
def run(event):
    monday = date.today() - timedelta(days=date.today().weekday())
    invoices = [e["node"] for e in wave(QUERY, {"start": monday.isoformat()})["invoices"]["edges"]]
    lines = [f"#{i['invoiceNumber']} {i['customer']['name']}: {i['total']['value']} ({i['status']})" for i in invoices]
    total = sum(float(i["total"]["value"]) for i in invoices)
    notify.email_me(f"Wave invoices this week: {total:,.2f}", "\n".join(lines) or "No invoices this week.")
    return {"count": len(lines), "total": total}