text: from flask import render_template, redirect, url_for, flash, request, current_app
  from werkzeug.urls import url_parse
  from flask_login import login_user, logout_user, current_user
  from app import db
  from app.auth import bp
  from app.auth.forms import LoginForm, SimpleRegistrationForm, RegistrationForm, \
  	ResetPasswordRequestForm, ResetPasswordForm
  from app.models import User
  from app.auth.email import send_password_reset_email
  from app import password_for_simple_login
  from app import server_data
  from datetime import datetime
  
  def login_eurovision_user(user, remember):
  	if user is None:
  		return
  
  	if login_user(user, remember=remember):
  		server_data.set_user_logged_in(user.id)
  
  
  @bp.route('/simple_register', methods=['GET', 'POST'])
  def simple_register():
  	if current_user.is_authenticated:
  		return redirect(url_for('main.index'))
  	
  	form = SimpleRegistrationForm()
  	if form.validate_on_submit():
  		current_app.logger.info("Logging in user {}".format(form.username.data))
  
  		existing_user = User.query.filter_by(username=form.username.data.lower()).first()	# check if a user of this name exists
  		if existing_user is not None:
  			if server_data.is_user_logged_in(existing_user.id):
  				flash("Someone with the username {} already exists! Try another name".format(form.username.data))
  				return render_template('auth/simple_register.html', start_time=server_data.start_time, now=datetime.utcnow(), title='Register', form=form)
  			current_app.logger.info("User {} already exists, so we're going to log them in.".format(existing_user.username))
  			login_eurovision_user(existing_user, remember=True)
  			return redirect(url_for('main.index'))
  		
  		user = User(username=form.username.data.lower(), emoji=form.emoji.data)
  
  		current_app.logger.info("User {} doesn't exist, so we're going to add them.".format(user.username))
  		db.session.add(user)		#pylint: disable=E1101
  		db.session.commit()			#pylint: disable=E1101
  		current_app.logger.info("New user {} has been added!".format(user.username))
  		flash('Welcome to the party, {}!'.format(user.username))
  
  		login_eurovision_user(user, remember=True)
  
  		return redirect(url_for('main.index'))
  	return render_template('auth/simple_register.html', start_time=server_data.start_time, now=datetime.utcnow(), title='Register', form=form)
  
  
  @bp.route('/login', methods=['GET', 'POST'])
  def login():
  	if current_user.is_authenticated:
  		return redirect(url_for('main.index'))
  	form = LoginForm()
  	if form.validate_on_submit():
  		user = User.query.filter_by(username=form.username.data).first()
  		if user is None or not user.check_password(form.password.data):
  			flash('Invalid username or password')
  			return redirect(url_for('auth.login'))
  		login_eurovision_user(user, remember=form.remember_me.data)
  		current_app.logger.info("{} has logged in.".format(user.username))
  		return redirect(url_for('main.index'))
  	return render_template('auth/login.html', title='Sign In', form=form)
  
  
  @bp.route('/logout')
  def logout():
  	server_data.set_user_logged_out(current_user.id)
  	logout_user()
  	return redirect(url_for('main.index'))
  
  
  @bp.route('/register', methods=['GET', 'POST'])
  def register():
  	if current_user.is_authenticated:
  		return redirect(url_for('main.index'))
  	form = RegistrationForm()
  	if form.validate_on_submit():
  		user = User(username=form.username.data, email=form.email.data)
  
  		if User.query.filter_by(username=form.username.data).first() is not None:
  			flash("Someone with the username {} already exists! Try another name".format(user.username))
  			return render_template('auth/register.html', title='Register', form=form)
  
  		user.set_password(form.password.data)
  		db.session.add(user)		#pylint: disable=E1101
  		db.session.commit()			#pylint: disable=E1101
  		current_app.logger.info("New user {} has been added!".format(user.username))
  		flash('Congratulations, you are now a registered user!')
  		return redirect(url_for('auth.login'))
  	return render_template('auth/register.html', title='Register', form=form)
  
  
  @bp.route('/reset_password_request', methods=['GET', 'POST'])
  def reset_password_request():
  	if current_user.is_authenticated:
  		return redirect(url_for('main.index'))
  	form = ResetPasswordRequestForm()
  	if form.validate_on_submit():
  		user = User.query.filter_by(email=form.email.data).first()
  		if user:
  			send_password_reset_email(user)
  		flash('Check your email for the instructions to reset your password')
  		return redirect(url_for('auth.login'))
  	return render_template('auth/reset_password_request.html',
  						   title='Reset Password', form=form)
  
  
  @bp.route('/reset_password/<token>', methods=['GET', 'POST'])
  def reset_password(token):
  	if current_user.is_authenticated:
  		return redirect(url_for('main.index'))
  	user = User.verify_reset_password_token(token)
  	if not user:
  		return redirect(url_for('main.index'))
  	form = ResetPasswordForm()
  	if form.validate_on_submit():
  		user.set_password(form.password.data)
  		db.session.commit()		#pylint: disable=E1101
  		flash('Your password has been reset.')
  		return redirect(url_for('auth.login'))
  	return render_template('auth/reset_password.html', form=form)
  