from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager,UserMixin,login_user,login_required,current_user,logout_user

app = Flask(__name__)

app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///login.db'
app.config['SECRET_KEY'] = 'thisissecret'


db = SQLAlchemy(app)

login_manager = LoginManager()
login_manager.init_app(app)

class User(UserMixin,db.Model):
    id = db.Column(db.Integer,primary_key=True)
    username = db.Column(db.String(30),unique=True)

@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))

@app.route('/')
def index():
    user = User.query.filter_by(username='Anthony').first()
    login_user(user)
    return 'You are now logged in!'

@app.route('/logout')
@login_required
def logout():
    logout_user()
    return 'You are now logged out!'

@app.route('/home')
@login_required
def home():
    return 'the current user is '+ current_user.username

if __name__ == '__main__':
    app.run(debug=True)