Save invoice PDFs from Gmail to Drive, named by supplier and amount

import base64, json
from clickruntime import on_trigger, credentials, http, ai, report_fetched

G, FOLDER, LABEL = "https://gmail.googleapis.com/gmail/v1/users/me", "your-invoices-folder-id", "Label_Filed"
SCHEMA = {"type": "object", "properties": {"invoice": {"type": "boolean"}, "date": {"type": "string"},
          "supplier": {"type": "string"}, "amount": {"type": "string"}}, "required": ["invoice", "date", "supplier", "amount"]}

@on_trigger
def run(event):
    h = {"Authorization": f"Bearer {credentials.connection('google', 'work')}"}
    msgs = http.get(f"{G}/messages", headers=h, params={"q": "has:attachment filename:pdf -label:Filed newer_than:7d"}).json().get("messages", [])
    report_fetched(len(msgs))
    if not msgs:
        return {"new": 0}
    saved = 0
    for m in msgs:
        msg = http.get(f"{G}/messages/{m['id']}", headers=h).json()
        for part in [p for p in msg["payload"].get("parts", []) if p.get("filename", "").lower().endswith(".pdf")]:
            info = ai.generate(f"Email snippet: {msg['snippet']}\nFile: {part['filename']}\nIs this an invoice or receipt? Extract date (YYYY-MM-DD), supplier, total.",
                               json_schema=SCHEMA, max_output_tokens=80).json
            if not info["invoice"]:
                continue
            data = http.get(f"{G}/messages/{m['id']}/attachments/{part['body']['attachmentId']}", headers=h).json()["data"]
            name = f"{info['date']}_{info['supplier']}_{info['amount'] or 'unknown'}.pdf"
            http.post("https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart", headers=h, files={
                "metadata": (None, json.dumps({"name": name, "parents": [FOLDER]}), "application/json"),
                "file": (name, base64.urlsafe_b64decode(data), "application/pdf")})
            saved += 1
        http.post(f"{G}/messages/{m['id']}/modify", headers=h, json={"addLabelIds": [LABEL]})
    return {"checked": len(msgs), "saved": saved}