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, BillForm, User, register_account

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

from flask_babel import gettext

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("/bills", methods = ["GET", "POST"])
@flask_login.login_required
def bills():
	form = BillForm(request.form)

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

	if request.method == "POST" and form.validate():
		cur.execute("""
		INSERT
		INTO Regninger
		VALUES (NULL, %s, %s, %s, %s, %s, 0, 1, %s)
		""", (form.payment_to.data, form.description.data, form.kid.data, form.sum.data, form.date_due.data, flask_login.current_user.id))

		conn.commit()

		return redirect(url_for("bills"))

	cur.execute("""
	SELECT Betaletil, Regningfor, Regningsum, KID, Betalingsfrist, Betalt
	FROM Regninger
	WHERE BrukerID = %s
	""", (flask_login.current_user.id,))

	data = []
	for row in cur:
		data.append(row)

	cur.close()
	conn.close()
	return render_template("pages/bills.html", data=data, form=form)

@glob.app.route("/warranties")
@flask_login.login_required
def warranties():
	return "Unimplemented"

@glob.app.route("/receipts")
@flask_login.login_required
def receipts():
	return "Unimplemented"

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

	form_login = LoginForm(request.form)
	form_register = RegisterForm(request.form)

	if request.method == "POST":
		if form_register.validate():
			try:
				register_account(form_register.email.data, form_register.password.data, form_register.firstname.data, form_register.surname.data)
				flash(gettext("User registered"), "success")
			except Exception as e:
				flash(gettext(str(e)), "danger")
			return redirect(url_for("login"))
		elif form_login.validate():
			try:
				user = User((form_login.email.data, form_login.password.data))
				flask_login.login_user(user)
				logged_in_users.append(user)
				flash(gettext("Logged in"), "success")
			except Exception as e:
				flash(gettext(str(e)), "danger")
				return redirect(url_for("login"))
			return redirect(url_for("dashboard")) # Valid login > Redirect to dashboard as user is logged in
	return render_template("login.html", form = {
		"login": form_login,
		"register": form_register
		})

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

@glob.app.errorhandler(401)
def unauthorized_handler_err():
	flash(gettext("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"))