Remind me about Buffer posts waiting for approval

from datetime import datetime, timedelta, timezone
from clickruntime import on_trigger, credentials, http, notify, report_fetched

ORG_ID = "your-organization-id"

def buffer(query, variables=None):
    resp = http.post("https://api.buffer.com", json={"query": query, "variables": variables or {}},
                     headers={"Authorization": f"Bearer {credentials.secret('BUFFER_API_KEY')}"})
    resp.raise_for_status()
    return resp.json()["data"]

@on_trigger
def run(event):
    edges = buffer("query($org: OrganizationId!) { posts(input: {organizationId: $org, "
                   "filter: {status: [needs_approval]}, sort: [{field: dueAt, direction: asc}]}, first: 100) "
                   "{ edges { node { text dueAt channel { name service } } } } }", {"org": ORG_ID})["posts"]["edges"]
    posts = [e["node"] for e in edges]
    report_fetched(len(posts))
    if not posts:
        return {"waiting": 0}
    soon = datetime.now(timezone.utc) + timedelta(hours=24)
    lines = []
    for p in posts:
        due = datetime.fromisoformat(p["dueAt"].replace("Z", "+00:00")) if p.get("dueAt") else None
        flag = "DUE SOON · " if due and due <= soon else ""
        when = f"{due:%a %d %b %H:%M}" if due else "no time set"
        lines.append(f"{flag}{p['channel']['service'].title()} · {when} · {p['text'][:100]}")
    notify.email_me(f"{len(posts)} Buffer posts waiting for approval", "\n".join(lines))
    return {"waiting": len(posts)}