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, RegisterForm, User, register_account

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():
		try:
			user = User((form.email.data, form.password.data))
		except Exception as e:
			flash(str(e), "danger")
			return render_template("login.html", form=form)

		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("/register", methods = ["GET", "POST"])
def register():
	if flask_login.current_user.is_authenticated:
		flash("Already logged in", "info")
		return redirect(url_for("dashboard"))
	
	form = RegisterForm(request.form)
	if request.method == "POST" and form.validate():
		try:
			register_account(form.email.data, form.password.data, form.firstname.data, form.surname.data)
		except Exception as e:
			flash(str(e), "danger")
			return render_template("register.html", form=form)

		flash("User registered", "success")
		return redirect(url_for("login"))
	return render_template("register.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):
	uuid = int(uuid)
	lst = [x for x in logged_in_users if x.id == uuid]
	return lst[0] if len(lst) > 0 else None

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