import logging

import streamlit as st
from sqlalchemy.sql import text
from streamlit.user_info import UserInfoProxy

from queries.connection import connection

logger = logging.getLogger(__name__)

def find_user_by_oidc_id(oidc_user_id):
   return connection().query('SELECT * FROM users WHERE oidc_user_id = :id', params={'id': oidc_user_id})


def find_user_by_email(email):
    return connection().query('SELECT * FROM users WHERE email = :email', params={'email': email})


def find_default_user():
    return find_user_by_email('default')


def update_default_user(email, name, oidc_user_id):
    with connection().session as session:
        try:
            query = text("UPDATE users SET email = :email, name = :name, oidc_user_id = :user_id WHERE email = 'default'")
            session.execute(query, {'email': email, 'name': name, 'user_id': oidc_user_id})
        except Exception as e:
            session.rollback()
            raise e


def create_user(email, name, oidc_user_id):
    with connection().session as session:
        try:
            logger.info("Creating new user %s", email)
            query = text('INSERT INTO users (email, name, oidc_user_id) VALUES (:email, :name, :user_id)')
            session.execute(query, {'email': email, 'name': name, 'user_id': oidc_user_id})
            return connection().query('SELECT * FROM users WHERE oidc_user_id = :id', params={'id': oidc_user_id})
        except Exception as e:
            session.rollback()
            raise e


def set_user_in_session(user: UserInfoProxy):
    email = user.email
    user_id = user.sub
    if hasattr(user, 'name'):
        name = user.name
    else:
        name = None

    user_entity = find_user_by_oidc_id(user_id)
    if user_entity.empty:
        user_entity = find_user_by_email(email)
    if user_entity.empty:
        user_entity = find_default_user()
        if user_entity.empty:
            user_entity = create_user(email, name, user_id)
        else:
            update_default_user(email, name, user_id)
            user_entity = find_user_by_oidc_id(user_id)

    st.session_state.user_id = user_entity["id"][0]
    st.session_state.user_name = user_entity["name"][0]
    st.session_state.user_email = user_entity["email"][0]
    st.session_state.user_external_id = user_entity["oidc_user_id"][0]