import datetime
import streamlit as st

from config import DEFAULT_ICON
from shared_page import common_page_config

from data_storage import add_new_user, is_admin, DB_PATH, drop_tables


def admin_add_new_user():
    add_new_user(st.session_state["admin_new_user_email"], st.session_state["admin_new_user_name"])


def admin_add_new_user_form():
    if st.button("Add new user"):
        with st.form("Add new user"):
            st.header("Admin add new user")
            st.write("Adds new user to sqlite db")
            st.text_input("Email Address", key="admin_new_user_email")
            st.text_input("Name", key="admin_new_user_name")
            st.form_submit_button("Submit", on_click=admin_add_new_user)


def database_backup_form():
    if st.button("DB Backup"):
        with st.container():
            st.header("Utility for backing up and restoring db file")
            with open(DB_PATH, "rb") as f:
                file_name = f"backup-{datetime.datetime.now().strftime('%y%m%d%H%M')}.db"
                st.download_button("Download db", f, file_name=file_name)


def drop_db_if_confirmed():
    confirmed = st.session_state.get("delete_confirmation") == "delete"
    if confirmed:
        drop_tables()
        st.warning("Database tables have been dropped")
    else:
        st.warning("Must confirm deletion by typing 'delete'")


def drop_db_form():
    if st.button("Reset DB"):
        with st.form("Reset DB"):
            st.header("Reset DB")
            st.text_input("Enter 'delete' to confirm deletion", key="delete_confirmation")
            st.form_submit_button("Submit", on_click=drop_db_if_confirmed)


def get_page():
    page_title = "Admin"
    st.set_page_config(page_title=page_title, page_icon=DEFAULT_ICON, layout="wide")
    common_page_config()
    if not is_admin(st.session_state.get("logged_in_user")):
        st.write("Not authorized")
        st.stop()

    st.title(page_title)

    database_backup_form()
    admin_add_new_user_form()
    drop_db_form()


if __name__ == "__main__":
    get_page()