import certifi
import pymongo
import os

from dotenv import load_dotenv

load_dotenv()


def get_mongo_client(mongo_url):
    """Establish connection to the MongoDB."""
    if not mongo_url:
        print("MONGO_URI not set in environment variables")
    try:
        client = pymongo.MongoClient(mongo_url, tlsCAFile=certifi.where())
        print("Connection to MongoDB successful")
        return client
    except pymongo.errors.ConnectionFailure as e:
        print(f"Connection failed: {e}")
        return None


def get_mongo_url():
    username = os.environ["MONGO_USERNAME"]
    password = os.environ["MONGO_PW"]
    mongo_url = f"mongodb+srv://{username}:{password}@cluster0.62unmco.mongodb.net/"
    return mongo_url