Get warned when Hunter credits run low

from clickruntime import on_trigger, credentials, http, notify, state

THRESHOLD = 0.10

@on_trigger
def run(event):
    data = http.get("https://api.hunter.io/v2/account",
                    params={"api_key": credentials.secret("HUNTER_API_KEY")}).json()["data"]
    reset = data.get("reset_date", "")
    lines, low = [], []
    for kind in ("searches", "verifications"):
        r = data["requests"][kind]
        left = r["available"] - r["used"]
        lines.append(f"{kind.title()}: {r['used']:,} of {r['available']:,} used, {left:,} left")
        if r["available"] and left / r["available"] < THRESHOLD:
            low.append((kind, left))
    warned = state.get("warned") or {}
    fresh = [k for k, _ in low if warned.get(k) != reset]
    if fresh:
        kind, left = low[0]
        notify.email_me(f"Hunter: {left:,} {kind} left this month", "\n".join(lines) + f"\nCredits reset on {reset}.")
        state.set("warned", {**warned, **{k: reset for k in fresh}})
    return {"low": [k for k, _ in low]}