Turn newsletters you read into LinkedIn posts

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

LABEL_ID = "Label_123"  # your "Share" label

@on_trigger
def run(event):
    gmail = build("gmail", "v1", credentials=Credentials(credentials.connection("google", "work")), cache_discovery=False)
    msgs = gmail.users().messages().list(userId="me", labelIds=[LABEL_ID], maxResults=5).execute().get("messages", [])
    report_fetched(len(msgs))
    if not msgs:
        return {"posted": 0}
    headers = {"Authorization": "Bearer " + credentials.connection("linkedin", "main"), "LinkedIn-Version": "202405"}
    me = http.get("https://api.linkedin.com/v2/userinfo", headers=headers).json()["sub"]
    for m in msgs:
        full = gmail.users().messages().get(userId="me", id=m["id"], format="full").execute()
        parts = full["payload"].get("parts", [full["payload"]])
        body = next((base64.urlsafe_b64decode(p["body"]["data"]).decode(errors="ignore") for p in parts
                     if p.get("mimeType") == "text/plain" and p["body"].get("data")), full["snippet"])
        text = ai.generate(f"Newsletter:\n{body[:4000]}", max_output_tokens=350,
                           system="Write a 120-word LinkedIn post in first person about the key idea, crediting the newsletter by name.").text
        http.post("https://api.linkedin.com/rest/posts", headers=headers, json={
            "author": f"urn:li:person:{me}", "commentary": text, "visibility": "PUBLIC", "lifecycleState": "PUBLISHED",
            "distribution": {"feedDistribution": "MAIN_FEED", "targetEntities": [], "thirdPartyDistributionChannels": []}}).raise_for_status()
        gmail.users().messages().modify(userId="me", id=m["id"], body={"removeLabelIds": [LABEL_ID]}).execute()
    return {"posted": len(msgs)}