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controller.py
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controller.py
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from flask import (Flask,
render_template,
request,
redirect,
jsonify,
url_for,
flash)
from sqlalchemy import create_engine, asc
from sqlalchemy.orm import sessionmaker
from model import Base, Restaurant, MenuItem, User
from flask import session as login_session
import random
import string
from oauth2client.client import flow_from_clientsecrets
from oauth2client.client import FlowExchangeError
import httplib2
import json
from flask import make_response
import requests
app = Flask(__name__)
# load client_id from google_credentials.json file
CLIENT_ID = json.loads(
open('google_data.json', 'r').read())['web']['client_id']
# intialize global scope variable with the name of the app
APPLICATION_NAME = "Restaurant Menu Application"
# Connect to Database
engine = create_engine('sqlite:///restaurant.db')
Base.metadata.bind = engine
# create database session so you can do CRUD functionality
DBSession = sessionmaker(bind=engine)
session = DBSession()
# start to authorization with Google
@app.route('/gconnect', methods=['POST'])
def gconnect():
# Validate state token
if request.args.get('state') != login_session['state']:
response = make_response(json.dumps('Invalid state parameter.'), 401)
response.headers['Content-Type'] = 'application/json'
return response
# Obtain authorization code
code = request.data
try:
# Upgrade the authorization code into a credentials object
oauth_flow = flow_from_clientsecrets('google_data.json', scope='')
oauth_flow.redirect_uri = 'postmessage'
credentials = oauth_flow.step2_exchange(code)
except FlowExchangeError:
response = make_response(
json.dumps('Failed to upgrade the authorization code.'), 401)
response.headers['Content-Type'] = 'application/json'
return response
# Check that the access token is valid.
access_token = credentials.access_token
url = ('https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=%s'
% access_token)
h = httplib2.Http()
result = json.loads(h.request(url, 'GET')[1])
# If there was an error in the access token info, abort.
if result.get('error') is not None:
response = make_response(json.dumps(result.get('error')), 500)
response.headers['Content-Type'] = 'application/json'
return response
# Verify that the access token is used for the intended user.
gplus_id = credentials.id_token['sub']
if result['user_id'] != gplus_id:
response = make_response(
json.dumps("Token's user ID doesn't match given user ID."), 401)
response.headers['Content-Type'] = 'application/json'
return response
# Verify that the access token is valid for this app.
if result['issued_to'] != CLIENT_ID:
response = make_response(
json.dumps("Token's client ID does not match app's."), 401)
print ("Token's client ID does not match app's.")
response.headers['Content-Type'] = 'application/json'
return response
stored_access_token = login_session.get('access_token')
stored_gplus_id = login_session.get('gplus_id')
if stored_access_token is not None and gplus_id == stored_gplus_id:
response = make_response(
json.dumps('Current user is already connected.'), 200)
response.headers['Content-Type'] = 'application/json'
return response
# Store the access token in the session for later use.
login_session['access_token'] = credentials.access_token
login_session['gplus_id'] = gplus_id
# Get user info
userinfo_url = "https://www.googleapis.com/oauth2/v1/userinfo"
params = {'access_token': credentials.access_token, 'alt': 'json'}
answer = requests.get(userinfo_url, params=params)
data = answer.json()
login_session['username'] = data['name']
login_session['picture'] = data['picture']
login_session['email'] = data['email']
# ADD PROVIDER TO LOGIN SESSION
login_session['provider'] = 'google'
# see if user exists, if it doesn't make a new one
user_id = getUserID(data["email"])
if not user_id:
user_id = createUser(login_session)
login_session['user_id'] = user_id
output = ''
output += '<h1>Welcome, '
output += login_session['username']
output += '!</h1>'
output += '<img src="'
output += login_session['picture']
output += ''' " style = "width: 300px; height: 300px;border-radius: 150px;
-webkit-border-radius: 150px;-moz-border-radius: 150px;"> '''
flash("you are now logged in as %s" % login_session['username'])
print ("done!")
return output
# this function is
@app.route('/gdisconnect')
def gdisconnect():
# Only disconnect a connected user.
access_token = login_session.get('access_token')
if access_token is None:
response = make_response(
json.dumps('Current user not connected.'), 401)
response.headers['Content-Type'] = 'application/json'
return response
url = 'https://accounts.google.com/o/oauth2/revoke?token=%s' % access_token
h = httplib2.Http()
result = h.request(url, 'GET')[0]
if result['status'] == '200':
response = make_response(json.dumps('Successfully disconnected.'), 200)
response.headers['Content-Type'] = 'application/json'
return response
else:
response = make_response(json.dumps(
'Failed to revoke token for given user.', 400))
response.headers['Content-Type'] = 'application/json'
return response
# User Helper Functions <<<<<<<<<<<<<<<
def createUser(login_session):
user = session.query(User).filter_by(email=login_session['email']).first()
if user is not None:
return user.id
newUser = User(name=login_session['username'], email=login_session[
'email'], picture=login_session['picture'])
session.add(newUser)
session.commit()
user = session.query(User).filter_by(email=login_session['email']).one()
return user.id
def getUserInfo(user_id):
user = session.query(User).filter_by(id=user_id).one()
return user
def getUserID(email):
try:
user = session.query(User).filter_by(email=email).one()
return user.id
except:
return None
# Create anti-forgery state token
@app.route('/login', methods=['GET', 'POST'])
def showLogin():
if request.method == 'POST':
login_session['provider'] = 'locale'
login_session['username'] = request.form['username']
login_session['email'] = request.form['email']
login_session['picture'] = request.form['picture']
login_session['user_id'] = createUser(login_session)
flash("You were logged in as %s" % login_session['username'])
return redirect(url_for('showRestaurants'))
if 'username' not in login_session:
state = ''.join(
random.choice(string.ascii_uppercase + string.digits)
for x in range(32))
login_session['state'] = state
return render_template('login.html', STATE=state)
return redirect(url_for('showRestaurants'))
# Disconnect based on provider
@app.route('/disconnect')
def disconnect():
if 'provider' in login_session:
if login_session['provider'] == 'google':
gdisconnect()
del login_session['gplus_id']
del login_session['access_token']
# if login_session['provider'] == 'facebook':
# fbdisconnect()
# del login_session['facebook_id']
del login_session['username']
del login_session['email']
del login_session['picture']
del login_session['user_id']
del login_session['provider']
flash("You have successfully been logged out.")
return redirect(url_for('showRestaurants'))
else:
flash("You were not logged in")
return redirect(url_for('showRestaurants'))
# Show all restaurants
@app.route('/')
@app.route('/restaurant/')
def showRestaurants():
restaurants = session.query(Restaurant).order_by(asc(Restaurant.name))
if 'username' in login_session:
return render_template(
'restaurants.html', restaurants=restaurants,
login_session=login_session['user_id'])
# return render_template('publicrestaurants.html', restaurants=restaurants)
# else:
return render_template('restaurants.html', restaurants=restaurants)
# Create a new restaurant
@app.route('/restaurant/new/', methods=['GET', 'POST'])
def newRestaurant():
if 'username' not in login_session:
return redirect('/login')
if request.method == 'POST':
newRestaurant = Restaurant(
name=request.form['name'], user_id=login_session['user_id'])
session.add(newRestaurant)
flash('New Restaurant %s Successfully Created' % newRestaurant.name)
session.commit()
return redirect(url_for('showRestaurants'))
else:
return render_template('newRestaurant.html')
# Edit a restaurant
@app.route('/restaurant/<int:restaurant_id>/edit/', methods=['GET', 'POST'])
def editRestaurant(restaurant_id):
if 'username' not in login_session:
return redirect('/login')
editedRestaurant = session.query(
Restaurant).filter_by(id=restaurant_id).one()
if editedRestaurant.user_id != login_session['user_id']:
# return "<script>function myFunction() {alert('You are not authorized
# to edit this restaurant. Please create your own restaurant in order
# to edit.');}</script><body onload='myFunction()'>"
flash(
'''You are not authorized to edit ""%s"" restaurant.
Please create your own restaurant in order to edit.'''
% editedRestaurant.name)
return redirect(url_for('showRestaurants'))
if request.method == 'POST':
if request.form['name']:
editedRestaurant.name = request.form['name']
flash('Restaurant Successfully Edited %s' % editedRestaurant.name)
return redirect(url_for('showRestaurants'))
else:
return render_template(
'editRestaurant.html', restaurant=editedRestaurant)
# Delete a restaurant
@app.route('/restaurant/<int:restaurant_id>/delete/', methods=['GET', 'POST'])
def deleteRestaurant(restaurant_id):
if 'username' not in login_session:
return redirect('/login')
restaurantToDelete = session.query(
Restaurant).filter_by(id=restaurant_id).one()
if restaurantToDelete.user_id != login_session['user_id']:
# return "<script>function myFunction() {alert(' this restaurant.
# Please create your own restaurant in order to delete.');}
# </script><body onload='myFunction()'>"
flash(
'''You are not authorized to delete ""%s"" restaurant.
Please create your own restaurant in order to delete.'''
% restaurantToDelete.name)
return redirect(url_for('showRestaurants'))
if request.method == 'POST':
session.delete(restaurantToDelete)
flash('%s Successfully Deleted' % restaurantToDelete.name)
session.commit()
return redirect(
url_for('showRestaurants', restaurant_id=restaurant_id))
else:
return render_template(
'deleteRestaurant.html', restaurant=restaurantToDelete)
# Show a restaurant menu
@app.route('/restaurant/<int:restaurant_id>/')
@app.route('/restaurant/<int:restaurant_id>/menu/')
def showMenu(restaurant_id):
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
creator = getUserInfo(restaurant.user_id)
items = session.query(MenuItem).filter_by(
restaurant_id=restaurant_id).all()
if 'username' not in login_session or creator.id != login_session[
'user_id']:
return render_template(
'menu.html', items=items, restaurant=restaurant, creator=creator)
else:
return render_template(
'menu.html', items=items, restaurant=restaurant, creator=creator,
login_session=login_session['user_id'])
# Create a new menu item
@app.route(
'/restaurant/<int:restaurant_id>/menu/new/', methods=['GET', 'POST'])
def newMenuItem(restaurant_id):
if 'username' not in login_session:
return redirect('/login')
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
if login_session['user_id'] != restaurant.user_id:
return """<script>function myFunction()
{alert('You are not authorized to add menu items to this restaurant.
Please create your own restaurant in order to add items.');}
</script><body onload='myFunction()'>"""
if request.method == 'POST':
newItem = MenuItem(
name=request.form['name'],
description=request.form['description'],
price=request.form['price'],
course=request.form['course'],
restaurant_id=restaurant_id,
user_id=restaurant.user_id)
session.add(newItem)
session.commit()
flash('New Menu %s Item Successfully Created' % (newItem.name))
return redirect(url_for('showMenu', restaurant_id=restaurant_id))
else:
return render_template('newmenuitem.html', restaurant_id=restaurant_id)
# Edit a menu item
@app.route(
'/restaurant/<int:restaurant_id>/menu/<int:menu_id>/edit',
methods=['GET', 'POST'])
def editMenuItem(restaurant_id, menu_id):
if 'username' not in login_session:
return redirect('/login')
editedItem = session.query(MenuItem).filter_by(id=menu_id).one()
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
if login_session['user_id'] != restaurant.user_id:
return """<script>function myFunction()
{alert('You are not authorized to edit menu items to this restaurant.
Please create your own restaurant in order to edit items.');}</script>
<body onload='myFunction()'>"""
if request.method == 'POST':
if request.form['name']:
editedItem.name = request.form['name']
if request.form['description']:
editedItem.description = request.form['description']
if request.form['price']:
editedItem.price = request.form['price']
if request.form['course']:
editedItem.course = request.form['course']
session.add(editedItem)
session.commit()
flash('Menu Item Successfully Edited')
return redirect(url_for('showMenu', restaurant_id=restaurant_id))
else:
return render_template(
'editmenuitem.html',
restaurant_id=restaurant_id, menu_id=menu_id, item=editedItem)
# Delete a menu item
@app.route(
'/restaurant/<int:restaurant_id>/menu/<int:menu_id>/delete',
methods=['GET', 'POST'])
def deleteMenuItem(restaurant_id, menu_id):
if 'username' not in login_session:
return redirect('/login')
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
itemToDelete = session.query(MenuItem).filter_by(id=menu_id).one()
if login_session['user_id'] != restaurant.user_id:
return """<script>function myFunction()
{alert('You are not authorized to delete menu items to this restaurant.
Please create your own restaurant in order to delete items.');}
</script> <body onload='myFunction()'>"""
if request.method == 'POST':
session.delete(itemToDelete)
session.commit()
flash('Menu Item Successfully Deleted')
return redirect(url_for('showMenu', restaurant_id=restaurant_id))
else:
return render_template('deleteMenuItem.html', item=itemToDelete)
# JSON APIs to view Restaurant Information
@app.route('/restaurant/<int:restaurant_id>/menu/JSON')
def restaurantMenuJSON(restaurant_id):
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
items = session.query(MenuItem).filter_by(
restaurant_id=restaurant_id).all()
return jsonify(MenuItems=[i.serialize for i in items])
@app.route('/restaurant/<int:restaurant_id>/menu/<int:menu_id>/JSON')
def menuItemJSON(restaurant_id, menu_id):
Menu_Item = session.query(MenuItem).filter_by(id=menu_id).one()
return jsonify(Menu_Item=Menu_Item.serialize)
@app.route('/restaurant/JSON')
def restaurantsJSON():
restaurants = session.query(Restaurant).all()
return jsonify(restaurants=[r.serialize for r in restaurants])
# checking if this file running from the terminal or importing it
if __name__ == '__main__':
app.secret_key = 'super_secret_key'
app.debug = True
app.run(host='localhost', port=5000)