Get emailed when someone on Reddit needs your product

import base64
from email.message import EmailMessage
from google.oauth2.credentials import Credentials
from googleapiclient.discovery import build
from clickruntime import on_trigger, report_fetched, credentials, http, state, ai

QUERY, ME = 'invoicing software freelancer OR "invoice app" recommend', "me@example.com"
SCHEMA = {"type": "object", "required": ["match", "reply"], "properties": {"match": {"type": "boolean"}, "reply": {"type": "string"}}}

def reddit(path, **params):
    headers = {"Authorization": "Bearer " + credentials.connection("reddit", "main"), "User-Agent": "clickruntime/1.0"}
    return [c["data"] for c in http.get(f"https://oauth.reddit.com{path}", headers=headers, params=params).json()["data"]["children"]]

def send_email(subject, text):
    msg = EmailMessage()
    msg["To"], msg["Subject"] = ME, subject
    msg.set_content(text)
    gmail = build("gmail", "v1", credentials=Credentials(credentials.connection("google", "work")), cache_discovery=False)
    gmail.users().messages().send(userId="me", body={"raw": base64.urlsafe_b64encode(msg.as_bytes()).decode()}).execute()

@on_trigger
def run(event):
    seen = set(state.get("seen") or [])
    posts = [p for p in reddit("/search", q=QUERY, sort="new", t="day", limit=25) if p["id"] not in seen]
    report_fetched(len(posts))
    if not posts:
        return {"leads": 0}
    leads = []
    for p in posts:
        r = ai.generate(f"{p['title']}\n{p['selftext'][:1500]}", json_schema=SCHEMA, max_output_tokens=250,
                        system="Our product: simple invoicing for freelancers. Is this person looking for it? Draft a helpful, honest reply.").json
        if r["match"]:
            leads.append(f"{p['title']}\nhttps://reddit.com{p['permalink']}\n\nSuggested reply:\n{r['reply']}")
    if leads:
        send_email(f"{len(leads)} Reddit lead(s)", "\n\n---\n\n".join(leads))
    state.set("seen", (list(seen) + [p["id"] for p in posts])[-2000:])
    return {"checked": len(posts), "leads": len(leads)}