#!/usr/bin/env python3
# This Source Code Form is licensed MPL-2.0: http://mozilla.org/MPL/2.0
import sys, os, re, requests

userdict = {}

def get_github_user_info(username):
    url = f"https://api.github.com/users/{username}"
    headers = {
        'Authorization': f'token {os.getenv("GITHUB_TOKEN")}'
    }
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        user_info = response.json()
        return user_info.get('name'), user_info.get('company'), user_info.get('blog')
    else:
        print(f"Failed to fetch user information for {username}")
        return None, None, None

def convert_handles_to_names(text):
    username_pattern = re.compile(r' @([\w-]+)\b')
    usernames = username_pattern.findall(text)

    for username in usernames:
        if username not in userdict:
            name, company, blog = get_github_user_info(username)
            userdict[username] = (name, company, blog)
            if name:
                text = text.replace(f'@{username}', name + f' (@{username})')
    return text

def main():
    if os.getenv("GITHUB_TOKEN") is None:
        print("Please set the GITHUB_TOKEN environment variable.", file=sys.stderr)
        sys.exit(1)
    # Read from stdin
    input_text = sys.stdin.read()
    converted_text = convert_handles_to_names(input_text)
    print(converted_text)

if __name__ == "__main__":
    main()

# Usage:
#   cat changelog.txt | python github-username-expander
# Deps:
#   pip install requests
#   export GITHUB_TOKEN=your_github_token_here