import connector_neo4j as conn

def main():
    print('----')
    try_create('Neo', True)
    match()

    print('----')
    try_create('Morpheus', False)
    match()

    cleanup()


def try_create(name, fail):
    print(f'Try to create Person node, fail = {fail}')
    try:
        with conn.Neo4jSession(transaction=True):
            session = conn.get_session()
            session.run(
                'CREATE (n:Person {name: $name})',
                name=name
            )
            results = session.run('MATCH (n:Person) RETURN n')
            for results in results:
                print(results['n'])
            if fail:
                raise Exception('something went wrong!')
    except Exception:
        pass


@conn.Neo4jSession()
def match():
    print('Match all Person nodes.')
    session = conn.get_session()
    results = session.run('MATCH (n:Person) RETURN n')
    for result in results:
        print(result['n'])


@conn.Neo4jSession(transaction=True)
def cleanup():
    session = conn.get_session()
    session.run('MATCH (n:Person) DETACH DELETE n')


if __name__ == '__main__':
    conn.configure(
        'bolt://localhost:7687',
        'neo4j',
        'blerg',
        conn.SessionStorageMode.SINGLE
    )
    main()