from django.apps import apps
from django.db.utils import IntegrityError

def create_oauth_credentials(name):
    """
    Automatically create oauth credentials for applications
    """
    username = 'oauth_api_%s' % name
    try:
        auth_user = get_user_model().objects.create_user(username)
    except IntegrityError:
        auth_user = get_user_model().objects.get(username=username)
    app, created = apps.get_model('oauth2_provider.Application').objects.get_or_create(
        name='Oauth User %s' % name,
        user=auth_user,
        client_type='confidential',
        authorization_grant_type='client-credentials'
        )
    return app.client_id, app.client_secret, username, created