from flask import render_template, url_for, request, redirect, flash, abort
from wtforms import Form, BooleanField, StringField, PasswordField, validators
import flask_login

from forms.login import LoginForm, User

from objects import glob # Global sharing of python objects in a manageable way

login_manager = flask_login.LoginManager()
login_manager.init_app(glob.app)
login_manager.login_view = "login"

logged_in_users = []

@glob.app.route("/")
@glob.app.route("/home")
@glob.app.route("/dashboard")
@flask_login.login_required
def dashboard():
	return render_template("pages/dashboard.html")

@glob.app.route("/login", methods = ["GET", "POST"])
def login():
	if flask_login.current_user.is_authenticated:
		flash("Already logged in", "info")
		return redirect(url_for("dashboard"))

	form = LoginForm(request.form)
	if request.method == "POST" and form.validate():

		conn = glob.get_sql_connection()
		cur = conn.cursor()

		cur.execute("""
		SELECT BrukerID
		FROM Bruker
		WHERE Epost = %s
			AND Passord = %s
		LIMIT 1;
		""", (form.email.data, form.password.data))

		uuid = cur.fetchone()

		cur.close()

		if uuid is None:
			flash("Invalid login", "danger")
			return render_template("login.html", form=form)

		user = User(int(uuid[0]))

		flask_login.login_user(user)
		logged_in_users.append(user)

		flash("Logged in", "success")
		return redirect(url_for("dashboard"))
	return render_template("login.html", form=form)

@glob.app.route("/logout")
@flask_login.login_required
def logout():
	flask_login.logout_user()
	flash("Logged out", "success")
	return redirect(url_for("login"))

@glob.app.errorhandler(401)
def unauthorized_handler_err():
	flash("Login is required", "danger")
	unauthorized_handler()

@login_manager.user_loader
def load_user(uuid):
    return User(uuid)

@login_manager.unauthorized_handler
def unauthorized_handler():
	return redirect(url_for("login"))