import csv
import sys


def get_urls(filename: str, limit: int | None = None) -> list[str]:
    """Get a list of URLs from FILENAME.

    FILENAME should be that of a CSV file with a field 'Domain',
    denoting the site URL.

    The 'https://' schema is prefixed to each URL.

    If LIMIT is not None, then stop after LIMIT URLs have been read.

    Return the list of URLs.

    """

    urls: list[str] = []

    with open(filename) as f:
        reader = csv.DictReader(f)
        for i, row in enumerate(reader):
            if limit is not None and i == limit:
                break

            urls.append(f"https://{row['Domain']}")

        return urls


def main():
    limit: int | None = None

    if len(sys.argv) > 1:
        limit = int(sys.argv[1])

    urls = get_urls("majestic_million.csv", limit)
    print(urls)


if __name__ == "__main__":
    main()