import os import shutil import sys import traceback import argparse from typing import List, Dict, Any from multiprocessing import Pool, cpu_count from src.download import download_feed_from_url from src.logger import get_logger from src.common import get_all_feed_dates, time_to_seconds from src.stops import get_all_stops from src.services import get_active_services from src.street_name import get_street_name, normalise_stop_name from src.trips import get_trips_for_services from src.stop_times import get_stops_for_trips from src.routes import load_routes from src.report_writer import write_stop_json logger = get_logger("stop_report") def parse_args(): parser = argparse.ArgumentParser( description="Generate stop-based JSON reports for a date or date range.") parser.add_argument('--output-dir', type=str, default="./output/", help='Directory to write reports to (default: ./output/)') parser.add_argument('--feed-dir', type=str, help="Path to the feed directory") parser.add_argument('--feed-url', type=str, help="URL to download the GTFS feed from (if not using local feed directory)") parser.add_argument('--force-download', action='store_true', help="Force download even if the feed hasn't been modified (only applies when using --feed-url)") args = parser.parse_args() if args.feed_dir and args.feed_url: parser.error("Specify either --feed-dir or --feed-url, not both.") if not args.feed_dir and not args.feed_url: parser.error( "You must specify either a path to the existing feed (unzipped) or a URL to download the GTFS feed from.") if args.feed_dir and not os.path.exists(args.feed_dir): parser.error(f"Feed directory does not exist: {args.feed_dir}") return args def time_to_seconds(time_str: str) -> int: """Convert HH:MM:SS to seconds since midnight.""" if not time_str: return 0 parts = time_str.split(':') if len(parts) != 3: return 0 try: hours, minutes, seconds = map(int, parts) return hours * 3600 + minutes * 60 + seconds except ValueError: return 0 def get_numeric_code(stop_code: str | None) -> str: if not stop_code: return "" numeric_code = ''.join(c for c in stop_code if c.isdigit()) return str(int(numeric_code)) if numeric_code else "" def get_stop_arrivals( feed_dir: str, date: str ) -> Dict[str, List[Dict[str, Any]]]: """ Process trips for the given date and organize stop arrivals. Args: feed_dir: Path to the GTFS feed directory date: Date in YYYY-MM-DD format numeric_stop_code: If True, strip non-numeric characters from stop codes Returns: Dictionary mapping stop_code to lists of arrival information. """ stops = get_all_stops(feed_dir) logger.info(f"Found {len(stops)} stops in the feed.") active_services = get_active_services(feed_dir, date) if not active_services: logger.info("No active services found for the given date.") return {} logger.info( f"Found {len(active_services)} active services for date {date}.") trips = get_trips_for_services(feed_dir, active_services) total_trip_count = sum(len(trip_list) for trip_list in trips.values()) logger.info(f"Found {total_trip_count} trips for active services.") # Get all trip IDs all_trip_ids = [trip.trip_id for trip_list in trips.values() for trip in trip_list] # Get stops for all trips stops_for_all_trips = get_stops_for_trips(feed_dir, all_trip_ids) logger.info(f"Precomputed stops for {len(stops_for_all_trips)} trips.") # Load routes information routes = load_routes(feed_dir) logger.info(f"Loaded {len(routes)} routes from feed.") # Create a reverse lookup from stop_id to stop_code stop_id_to_code = {} for stop_id, stop in stops.items(): if stop.stop_code: stop_id_to_code[stop_id] = get_numeric_code(stop.stop_code) # Organize data by stop_code stop_arrivals = {} for service_id, trip_list in trips.items(): for trip in trip_list: # Get route information once per trip route_info = routes.get(trip.route_id, {}) route_short_name = route_info.get('route_short_name', '') trip_headsign = getattr(trip, 'headsign', '') or '' trip_id = trip.trip_id # Get stop times for this trip trip_stops = stops_for_all_trips.get(trip.trip_id, []) if not trip_stops: continue # Pair stop_times with stop metadata once to avoid repeated lookups trip_stop_pairs = [] stop_names = [] for stop_time in trip_stops: stop = stops.get(stop_time.stop_id) trip_stop_pairs.append((stop_time, stop)) stop_names.append(stop.stop_name if stop else "Unknown Stop") # Memoize street names per stop name for this trip and build segments street_cache: dict[str, str] = {} segment_names: list[str] = [] stop_to_segment_idx: list[int] = [] previous_street: str | None = None for name in stop_names: street = street_cache.get(name) if street is None: street = get_street_name(name) or "" street_cache[name] = street if street != previous_street: segment_names.append(street) previous_street = street stop_to_segment_idx.append(len(segment_names) - 1) # Precompute future street transitions per segment future_suffix_by_segment: list[tuple[str, ...]] = [()] * len(segment_names) future_tuple: tuple[str, ...] = () for idx in range(len(segment_names) - 1, -1, -1): future_suffix_by_segment[idx] = future_tuple current_street = segment_names[idx] future_tuple = (current_street,) + future_tuple if current_street is not None else future_tuple segment_future_lists: dict[int, list[str]] = {} first_stop_time, first_stop = trip_stop_pairs[0] last_stop_time, last_stop = trip_stop_pairs[-1] starting_stop_name = first_stop.stop_name if first_stop else "Unknown Stop" terminus_stop_name = last_stop.stop_name if last_stop else "Unknown Stop" starting_code = get_numeric_code(first_stop.stop_code) if first_stop else "" terminus_code = get_numeric_code(last_stop.stop_code) if last_stop else "" starting_name = normalise_stop_name(starting_stop_name) terminus_name = normalise_stop_name(terminus_stop_name) starting_time = first_stop_time.departure_time terminus_time = last_stop_time.arrival_time for i, (stop_time, _) in enumerate(trip_stop_pairs): stop_code = stop_id_to_code.get(stop_time.stop_id) if not stop_code: continue # Skip stops without a code if stop_code not in stop_arrivals: stop_arrivals[stop_code] = [] if segment_names: segment_idx = stop_to_segment_idx[i] if segment_idx not in segment_future_lists: segment_future_lists[segment_idx] = list(future_suffix_by_segment[segment_idx]) next_streets = segment_future_lists[segment_idx].copy() else: next_streets = [] trip_id_fmt = "_".join(trip_id.split("_")[1:3]) stop_arrivals[stop_code].append({ "trip_id": trip_id_fmt, "service_id": service_id.split("_")[1], "line": route_short_name, "route": trip_headsign, "stop_sequence": stop_time.stop_sequence, 'shape_dist_traveled': getattr(stop_time, 'shape_dist_traveled', 0), "next_streets": next_streets, "starting_code": starting_code, "starting_name": starting_name, "starting_time": starting_time, "calling_time": stop_time.departure_time, "calling_ssm": time_to_seconds(stop_time.departure_time), "terminus_code": terminus_code, "terminus_name": terminus_name, "terminus_time": terminus_time, }) # Sort each stop's arrivals by arrival time for stop_code in stop_arrivals: # Filter out entries with None arrival_seconds stop_arrivals[stop_code] = [ item for item in stop_arrivals[stop_code] if item["calling_ssm"] is not None] stop_arrivals[stop_code].sort(key=lambda x: x["calling_ssm"]) return stop_arrivals def process_date( feed_dir: str, date: str, output_dir: str ) -> tuple[str, Dict[str, int]]: """ Process a single date and write its stop JSON files. Returns summary data for index generation. """ logger = get_logger(f"stop_report_{date}") try: logger.info(f"Starting stop report generation for date {date}") # Get all stop arrivals for the current date stop_arrivals = get_stop_arrivals(feed_dir, date) if not stop_arrivals: logger.warning(f"No stop arrivals found for date {date}") return date, {} # Write individual stop JSON files for stop_code, arrivals in stop_arrivals.items(): write_stop_json(output_dir, date, stop_code, arrivals) # Create summary for index stop_summary = {stop_code: len(arrivals) for stop_code, arrivals in stop_arrivals.items()} logger.info(f"Processed {len(stop_arrivals)} stops for date {date}") return date, stop_summary except Exception as e: logger.error(f"Error processing date {date}: {e}") raise def main(): args = parse_args() output_dir = args.output_dir feed_url = args.feed_url if not feed_url: feed_dir = args.feed_dir else: logger.info(f"Downloading GTFS feed from {feed_url}...") feed_dir = download_feed_from_url( feed_url, output_dir, args.force_download) if feed_dir is None: logger.info("Download was skipped (feed not modified). Exiting.") return all_dates = get_all_feed_dates(feed_dir) if not all_dates: logger.error('No valid dates found in feed.') return date_list = all_dates # Ensure date_list is not empty before processing if not date_list: logger.error("No valid dates to process.") return logger.info(f"Processing {len(date_list)} dates") # Dictionary to store summary data for index files all_stops_summary = {} for date in date_list: _, stop_summary = process_date(feed_dir, date, output_dir) all_stops_summary[date] = stop_summary if feed_url: if os.path.exists(feed_dir): shutil.rmtree(feed_dir) logger.info(f"Removed temporary feed directory: {feed_dir}") if __name__ == "__main__": try: main() except Exception as e: logger = get_logger("stop_report") logger.critical(f"An unexpected error occurred: {e}", exc_info=True) traceback.print_exc() sys.exit(1)