parametrize oauth url in config

import connexion

from flask import render_template

import encoder

import yaml

from flask_mongoengine import MongoEngine

from configparser import ConfigParser

PORT = int(CONFIG.get("server", "port"))

MONGO_HOST = CONFIG.get("mongodb", "host")

MONGO_PORT = CONFIG.get("mongodb", "port")

KEYCLOAK_HOST = CONFIG.get("keycloak", "host")

KEYCLOAK_PORT = int(CONFIG.get("keycloak", "port"))

KEYCLOAK_REALM = CONFIG.get("keycloak", "realm")

app = connexion.App(__name__, specification_dir='./swagger/')

    """Endpoint to retrieve documentation"""

    return render_template("swaggerui.html")

def edit_openapi_file():

    with open("static/openapi.yaml", "r") as f:

        openapi_data = yaml.safe_load(f)

    token_url = f"http://{KEYCLOAK_HOST}:{KEYCLOAK_PORT}/realms/{KEYCLOAK_REALM}/protocol/openid-connect/token"

    # Update the tokenUrl

    openapi_data['components']['securitySchemes']['oAuth2ClientCredentials']['flows']['clientCredentials']['tokenUrl'] = token_url

    with open("static/openapi.yaml", "w") as f:

        yaml.dump(openapi_data, f)

def main():

    edit_openapi_file()

    app.run(host=HOST, port=PORT, threaded=True)