import argparse
import os
import cv2
import time
import logging

from siwatsystem.pympta import load_pipeline_from_zip, run_pipeline

logging.basicConfig(level=logging.DEBUG, format="%(asctime)s [%(levelname)s] %(message)s")

def main(mpta_url: str, video_source: str):
    extraction_dir = os.path.join("models", "webcam_pipeline")
    logging.info(f"Loading pipeline from {mpta_url}")
    model_tree = load_pipeline_from_zip(mpta_url, extraction_dir)
    if model_tree is None:
        logging.error("Failed to load pipeline.")
        return

    cap = cv2.VideoCapture(video_source)
    if not cap.isOpened():
        logging.error(f"Cannot open video source {video_source}")
        return

    logging.info("Press 'q' to exit.")
    while True:
        ret, frame = cap.read()
        if not ret:
            logging.error("Failed to capture frame.")
            break

        detection, bbox = run_pipeline(frame, model_tree, return_bbox=True)
        if bbox:
            x1, y1, x2, y2 = bbox
            cv2.rectangle(frame, (x1, y1), (x2, y2), (0, 255, 0), 2)
            label = detection["class"] if detection else "Detection"
            cv2.putText(frame, label, (x1, y1 - 10),
                        cv2.FONT_HERSHEY_SIMPLEX, 0.9, (36, 255, 12), 2)

        cv2.imshow("Pipeline Webcam", frame)
        if cv2.waitKey(1) & 0xFF == ord('q'):
            break

    cap.release()
    cv2.destroyAllWindows()

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Run pipeline webcam utility.")
    parser.add_argument("--mpta-url", type=str, required=True, help="URL to the pipeline mpta (ZIP) file.")
    parser.add_argument("--video", type=str, default="0", help="Video source (default webcam index 0).")
    args = parser.parse_args()
    video_source = int(args.video) if args.video.isdigit() else args.video
    main(args.mpta_url, video_source)