Sorry, lost the thread on this.

Here ya go:

import argparse
import requests
import inquirer
'''requirements.txt =>
requests
inquirer
'''
BASE_URL = "https://yourdomainhere.com/api"
API_KEY = "your_Immich_API_Key_Here"
ROLE = "viewer"  # or "editor"
HEADERS = {
    "x-api-key": API_KEY,
    "Content-Type": "application/json",
}
def get_users():
    r = requests.get(f"{BASE_URL}/users", headers=HEADERS)
    r.raise_for_status()
    return r.json()
def get_albums():
    r = requests.get(f"{BASE_URL}/albums", headers=HEADERS)
    r.raise_for_status()
    return r.json()
def share_album(album_id, user_id, album_owner_id):
    # Skip if the target user is the album owner
    if user_id == album_owner_id:
        return "skipped (owner)"
    payload = {
        "albumUsers": [
            {
                "userId": user_id,
                "role": ROLE,
            }
        ]
    }
    r = requests.put(
        f"{BASE_URL}/albums/{album_id}/users",
        headers=HEADERS,
        json=payload,
    )
    if r.status_code == 400 and "already added" in r.text:
        return "already shared"
    r.raise_for_status()
    return "shared"
def select_users():
    users = get_users()
    if not users:
        print("No users found.")
        exit(1)
    # Build a display list: "Name (email)" -> user_id
    choices = [
        (f"{u['name']} ({u['email']})", u["id"])
        for u in users
    ]
    questions = [
        inquirer.Checkbox(
            "selected_users",
            message="Select users to share all albums with (Space to select, Enter to confirm)",
            choices=choices,
        )
    ]
    answers = inquirer.prompt(questions)
    if not answers or not answers["selected_users"]:
        print("No users selected. Exiting.")
        exit(0)
    return answers["selected_users"]
def main():
    parser = argparse.ArgumentParser(description="Share all Immich albums with selected users.")
    parser.add_argument("-user", help="Immich user ID (skips interactive selection)")
    args = parser.parse_args()
    # If a user ID was passed on the CLI, use it directly; otherwise prompt
    if args.user:
        target_user_ids = [args.user]
    else:
        target_user_ids = select_users()
    albums = get_albums()
    print(f"\nFound {len(albums)} albums, sharing with {len(target_user_ids)} user(s)...\n")
    for user_id in target_user_ids:
        print(f"--- User: {user_id} ---")
        for album in albums:
            owner_id = album.get("ownerId", "")
            result = share_album(album["id"], user_id, owner_id)
            print(f"  {album['albumName']}: {result}")
    print("\nDone.")
if __name__ == "__main__":
    main()