""" Script to initialize the SQL crawler on a website of the user's choice """

import sys
import argparse
import logging
from sql_crawler import crawler

def start_crawler():
    """ Parses command-line args and starts the crawler.
    """

    parser = argparse.ArgumentParser(description="SQL Web Crawler")
    parser.add_argument("urls", help="A space-separated list of URLs to be crawled", nargs='+')
    parser.add_argument("--max_depth", help="The max depth of the crawler (default=3)", type=int, default=3)
    parser.add_argument("--max_size", help="The maximum number of links to be crawled (default=100)", type=int, default=100)
    parser.add_argument("--cloud_storage", help="Project and bucket to store in GCS. Formatted as project_id.bucket (default=None)", default=None)
    parser.add_argument("--bigquery", help="Project and dataset to store in BQ. Formatted as project_id.dataset (default=None)", default=None)
    parser.add_argument("--stream", help="Only stream data instead of saving locally. Simply put '--stream' to set this; no variable required afterward. Requires --bigquery variable to be set as well", action='store_true', default=False)
    args = parser.parse_args()

    if args.stream and args.bigquery is None:
        logging.error("Need to specify BigQuery table if streaming data")
        return

    new_crawler = crawler.Crawler(args.urls, max_size=args.max_size, max_depth=args.max_depth, gcs=args.cloud_storage, bq=args.bigquery, stream=args.stream)
    new_crawler.crawl()

def main():
    start_crawler()

if __name__ == "__main__":
    main()