# Copyright (c) 2020 The Regents of the University of California
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import argparse

def parse_gitcookies_line(raw):
    # if this is a line from .gitcookies, the delimiter is `\t`
    auth_info = raw.strip().split('\t')
    if len(auth_info) < 7:
        # if this is a line from auth script, the delimiter is `,`
        auth_info = raw.strip().split(',')
    if len(auth_info) != 7:
        return None, None
    auth_info = auth_info[-1]
    auth_info = auth_info[4:].split("=")
    username = auth_info[0]
    password = auth_info[1]
    return username, password

def parse_gitcookies(input_path):
    username_password_dict = {}
    with open(input_path, "r") as input_stream:
        for line in input_stream:
            username, password = parse_gitcookies_line(line)
            if not username:
                continue
            username_password_dict[username] = password
    return username_password_dict

if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description=("Extract username and password from .gitcookies"
                     "or from the script used to write .gitcookies file"))
    parser.add_argument("input",
                        help = ("Path to a .gitcookies file or a file with "
                                "a similar format"))
    parser.add_argument("output", help="Path to the output file")
    args = parser.parse_args()
    username_password_dict = parse_gitcookies(args.input)
    with open(args.output, "w") as output_stream:
        for username, password in username_password_dict.items():
            output_stream.write(f"{username}\n{password}\n")
