installation.py

import os
import requests
import jwt
import time

# Load environment variables
app_id = os.getenv('GITHUB_APP_ID')
private_key_file = os.getenv('GITHUB_RSA_PRIVATE_KEY_PATH')

with open(private_key_file, 'r') as f:
    private_key = f.read()

# Create JWT
def create_jwt(app_id, private_key):
    payload = {
        "iat": int(time.time()),
        "exp": int(time.time()) + (10 * 60),  # Token valid for 10 minutes
        "iss": app_id
    }
    return jwt.encode(payload, private_key, algorithm="RS256")

jwt_token = create_jwt(app_id, private_key)

# List installations of the GitHub App
url = "https://api.github.com/app/installations"
headers = {
    "Authorization": f"Bearer {jwt_token}",
    "Accept": "application/vnd.github+json"
}

response = requests.get(url, headers=headers)

if response.status_code == 200:
    print("Installations:", response.json())
else:
    print(f"Failed to list installations: {response.status_code}, {response.text}")