Convert json cookies to netscape format

cookies-converter.py

#!/usr/bin/env python3

import json
import datetime
import sys
import os

def convert_json_to_netscape(json_data):
    netscape_cookies = []

    for cookie in json_data:
        domain = cookie.get('domain', '')
        include_subdomain = 'TRUE' if cookie.get('includeSubdomain', False) else 'FALSE'
        path = cookie.get('path', '/')
        secure = 'TRUE' if cookie.get('secure', False) else 'FALSE'
        expiry = cookie.get('expiry', 0)
        name = cookie.get('name', '')
        value = cookie.get('value', '')

        # Convert expiry to Netscape format (epoch time)
        if isinstance(expiry, str):
            try:
                expiry_date = datetime.datetime.strptime(expiry, '%Y-%m-%dT%H:%M:%SZ')
                expiry = int(expiry_date.timestamp())
            except ValueError:
                expiry = 0

        netscape_cookie = f"{domain}\t{include_subdomain}\t{path}\t{secure}\t{expiry}\t{name}\t{value}"
        netscape_cookies.append(netscape_cookie)

    return netscape_cookies

def prepend_netscape_header(file):
    header = (
        "# Netscape HTTP Cookie File\n"
        "# http://curl.haxx.se/rfc/cookie_spec.html\n"
        "# This is a generated file!  Do not edit.\n\n"
    )
    file.write(header)

def main():
    if len(sys.argv) < 2:
        print("Usage: cookies-converter.py <json_file> [-n|--netscape]")
        return

    json_file = sys.argv[1]
    add_netscape_header = '-n' in sys.argv or '--netscape' in sys.argv

    try:
        with open(json_file, 'r') as file:
            json_data = json.load(file)
    except FileNotFoundError:
        print(f"Error: File '{json_file}' not found.")
        return
    except json.JSONDecodeError:
        print(f"Error: File '{json_file}' is not a valid JSON file.")
        return

    netscape_cookies = convert_json_to_netscape(json_data)

    # Create the output file name
    base_name, _ = os.path.splitext(json_file)
    output_file = f"{base_name}-netscape.txt"

    try:
        with open(output_file, 'w') as file:
            if add_netscape_header:
                prepend_netscape_header(file)
            for cookie in netscape_cookies:
                file.write(cookie + '\n')
        print(f"Netscape cookies saved to '{output_file}'")
    except IOError as e:
        print(f"Error: Could not write to file '{output_file}'. {e}")

if __name__ == "__main__":
    main()