Truck Gate Check-In API: Container Number + License Plate

import base64, os, requests
from concurrent.futures import ThreadPoolExecutor

API = "https://api.structocr.com/v1"
HEADERS = {"x-api-key": os.environ["STRUCTOCR_API_KEY"]}

def scan(endpoint, path):
    with open(path, "rb") as f:
        img = base64.b64encode(f.read()).decode()
    r = requests.post(f"{API}/{endpoint}", headers=HEADERS, json={"img": img}, timeout=30)
    r.raise_for_status()
    return r.json()["data"]

def check_in(container_photo, truck_photo, expected):
    with ThreadPoolExecutor() as pool:
        box = pool.submit(scan, "container", container_photo)
        truck = pool.submit(scan, "license-plate", truck_photo)
        box, truck = box.result(), truck.result()

    container = box["container_number"] if box["is_valid"] else None
    plates = [p["plate_number_normalized"] for p in truck.get("plates", [])]

    if container == expected["container"] and expected["plate"] in plates:
        return "gate in", container
    return "send to clerk", {"container": box["container_number"], "plates": plates}

print(check_in("container.jpg", "truck.jpg", {"container": "SOCU7345122", "plate": "701234"}))