Post image carousels from Drive to Instagram and Facebook

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

PAGE_ID, IG_ID, ROOT, POSTED, G = "1234567890", "17841400000000000", "folder-carousels-id", "folder-posted-id", "https://graph.facebook.com/v21.0"

@on_trigger
def run(event):
    drive = build("drive", "v3", credentials=Credentials(credentials.connection("google", "work")), cache_discovery=False)
    folders = drive.files().list(q=f"'{ROOT}' in parents and mimeType='application/vnd.google-apps.folder'",
                                 orderBy="name", pageSize=1).execute()["files"]
    if not folders:
        return {"posted": False}
    folder = folders[0]
    images = drive.files().list(q=f"'{folder['id']}' in parents and mimeType contains 'image/'", orderBy="name",
                                fields="files(id,webContentLink)", pageSize=10).execute()["files"]
    for img in images:
        drive.permissions().create(fileId=img["id"], body={"type": "anyone", "role": "reader"}).execute()
    caption = ai.generate(f"Instagram caption for an interior design project: {folder['name']}", max_output_tokens=150).text.strip()
    t = {"access_token": credentials.connection("facebook", "work")}
    kids = [http.post(f"{G}/{IG_ID}/media", data={**t, "image_url": i["webContentLink"], "is_carousel_item": "true"}).json()["id"] for i in images]
    c = http.post(f"{G}/{IG_ID}/media", data={**t, "media_type": "CAROUSEL", "children": ",".join(kids), "caption": caption}).json()["id"]
    http.post(f"{G}/{IG_ID}/media_publish", data={**t, "creation_id": c})
    fb_ids = [http.post(f"{G}/{PAGE_ID}/photos", data={**t, "url": i["webContentLink"], "published": "false"}).json()["id"] for i in images]
    http.post(f"{G}/{PAGE_ID}/feed", json={**t, "message": caption, "attached_media": [{"media_fbid": i} for i in fb_ids]})
    drive.files().update(fileId=folder["id"], addParents=POSTED, removeParents=ROOT).execute()
    return {"images": len(images)}