#!/usr/bin/env python3
"""
Resampler Loop Wrapper

Runs the Resampler in a continuous loop, executing it once per minute.
This replaces the schedule-based approach used in main_app.py and is
designed to run as a supervisord-managed process inside Docker.
"""

import argparse
import logging
import os
import sys
import time
import signal

from logging_utils import setup_logging
from resampler import Resampler, parse_timeframes

shutdown_requested = False


def handle_shutdown(signum, frame):
    global shutdown_requested
    shutdown_requested = True


def main():
    parser = argparse.ArgumentParser(description="Run the resampler in a continuous loop.")
    parser.add_argument("--coins", nargs='+', required=True, help="List of coins to process.")
    parser.add_argument("--timeframes", nargs='+', required=True, help="List of timeframes to generate.")
    parser.add_argument("--log-level", default="normal", choices=['off', 'normal', 'debug'])
    args = parser.parse_args()

    signal.signal(signal.SIGTERM, handle_shutdown)
    signal.signal(signal.SIGINT, handle_shutdown)

    setup_logging(args.log_level, 'ResamplerLoop')

    timeframes_dict = parse_timeframes(args.timeframes)
    logging.info(f"Resampler loop started. Coins: {args.coins}, Timeframes: {list(timeframes_dict.keys())}")

    while not shutdown_requested:
        try:
            # Pass a copy because Resampler.run() deletes '1m' from the dict
            timeframes_copy = dict(timeframes_dict)
            resampler = Resampler(
                log_level=args.log_level,
                coins=args.coins,
                timeframes=timeframes_copy
            )
            resampler.run()
        except Exception as e:
            logging.error(f"Resampler run failed: {e}")

        if shutdown_requested:
            break

        # Sleep for 60 seconds, but check shutdown flag every second
        for _ in range(60):
            if shutdown_requested:
                break
            time.sleep(1)

    logging.info("Resampler loop shutting down.")


if __name__ == "__main__":
    main()