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project.py
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project.py
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from flask import Flask, render_template, request, redirect,jsonify, url_for, flash, g
app = Flask(__name__)
from sqlalchemy import create_engine, asc, and_
from sqlalchemy.orm import sessionmaker
from database_setup import Base, Restaurant, MenuItem, User
#Anti-forgery imports (to make browser's access token)
from flask import session as login_session
import random, string
# GConnect function import libraries (to make gconnect work right)
from oauth2client.client import flow_from_clientsecrets
from oauth2client.client import FlowExchangeError
import httplib2
import json
from flask import make_response
import requests
# Some global variables that are used in the GConnect function
# NOTE: need to download the 'client_secrets.json' from the google account AFTER
# updating the certification on the google account to allow redirection to BOTH
# http://localhost:5000/login and http://localhost:5000/gconnect or it will not work
CLIENT_ID = json.loads(
open('client_secrets.json', 'r').read())['web']['client_id']
APPLICATION_NAME = "Restaurant Menu Application"
#Connect to Database and create database session - DO THIS INDIVIDUALLY?
engine = create_engine('sqlite:///restaurantmenuwithusers.db')
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
session = DBSession()
# Create a state token to prevent request forgery.
# Store it in the session for later validation
# Show login page
@app.route('/login')
def showLogin():
state = ''.join(random.choice(string.ascii_uppercase +
string.digits) for x in range(32))
login_session['state'] = state
#return ("The current session state is {}").format(login_session['state'])
return render_template('login.html', STATE=state)
# User Helper Functions
def createUser(login_session):
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
# FBconnect code to authenticate user using the facebook API
# With the "client secret" and client # ID
# ALso verifies that the request comes from the browser with the same anti-forgery state
# token as the one provided by the browser.
@app.route('/fbconnect', methods=['POST'])
def fbconnect():
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
access_token = request.data
print("access token received %s " % access_token)
app_id = json.loads(open('fb_client_secrets.json', 'r').read())[
'web']['app_id']
app_secret = json.loads(
open('fb_client_secrets.json', 'r').read())['web']['app_secret']
url = 'https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token&client_id=%s&client_secret=%s&fb_exchange_token=%s' % (
app_id, app_secret, access_token)
h = httplib2.Http()
result = h.request(url, 'GET')[1]
# Use token to get user info from API
userinfo_url = "https://graph.facebook.com/v2.8/me"
'''
Due to the formatting for the result from the server token exchange we have to
split the token first on commas and select the first index which gives us the key : value
for the server access token then we split it on colons to pull out the actual token value
and replace the remaining quotes with nothing so that it can be used directly in the graph
api calls
'''
token = result.split(',')[0].split(':')[1].replace('"', '')
url = 'https://graph.facebook.com/v2.8/me?access_token=%s&fields=name,id,email' % token
h = httplib2.Http()
result = h.request(url, 'GET')[1]
# print "url sent for API access:%s"% url
# print "API JSON result: %s" % result
data = json.loads(result)
login_session['provider'] = 'facebook'
login_session['username'] = data["name"]
login_session['email'] = data["email"]
login_session['facebook_id'] = data["id"]
# The token must be stored in the login_session in order to properly logout
login_session['access_token'] = token
# Get user picture
url = 'https://graph.facebook.com/v2.8/me/picture?access_token=%s&redirect=0&height=200&width=200' % token
h = httplib2.Http()
result = h.request(url, 'GET')[1]
data = json.loads(result)
login_session['picture'] = data["data"]["url"]
# see if user exists
user_id = getUserID(login_session['email']) # does not work in my case because I use different emails?
print(login_session['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("Now logged in as %s" % login_session['username'])
return output
@app.route('/fbdisconnect')
def fbdisconnect():
facebook_id = login_session['facebook_id']
# The access token must me included to successfully logout
access_token = login_session['access_token']
url = 'https://graph.facebook.com/%s/permissions?access_token=%s' % (facebook_id,access_token)
h = httplib2.Http()
result = h.request(url, 'DELETE')[1]
return "you have been logged out"
# GConnect code to authenticate user using the google API
# With the "client secret" and client # ID
# ALso verifies that the request comes from the browser with the same anti-forgery state
# token as the one provided by the browser.
@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('client_secrets.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['provider'] = 'google'
login_session['username'] = data['name']
login_session['picture'] = data['picture']
login_session['email'] = data['email']
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!")
#checks if this User already exists in the database - if not, adds them!
if(getUserID(login_session['email']) == None):
createUser(login_session)
login_session['user_id'] = getUserID(login_session['email'])
return output
# DISCONNECT - Revoke a current user's token and reset their login_session
@app.route('/gdisconnect')
def gdisconnect():
access_token = login_session.get('access_token')
if access_token is None:
print('Access Token is None')
response = make_response(json.dumps('Current user not connected.'), 401)
response.headers['Content-Type'] = 'application/json'
return response
print('In gdisconnect access token is %s', access_token)
print('User name is: ')
print(login_session['username'])
url = 'https://accounts.google.com/o/oauth2/revoke?token=%s' % login_session['access_token']
h = httplib2.Http()
result = h.request(url, 'GET')[0]
print('result is ')
print(result)
if result['status'] == '200':
#del login_session['access_token'] removed in the general disconnect function
#del login_session['gplus_id'] '...'
#del login_session['username']
#del login_session['email']
#del login_session['picture']
#del login_session['user_id']
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
#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])
#Show all restaurants
@app.route('/')
@app.route('/restaurant/')
def showRestaurants():
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
restaurants = session.query(Restaurant).with_entities(Restaurant.name, Restaurant.id).order_by(asc(Restaurant.name))
if ('user_id' in login_session):
restaurants = session.query(Restaurant).filter_by(user_id=login_session['user_id']).all()
return render_template('restaurants.html', restaurants = restaurants)
else:
return render_template('publicrestaurants.html', restaurants = restaurants)
#Create a new restaurant
@app.route('/restaurant/new/', methods=['GET','POST'])
def newRestaurant():
if ('user_id' in login_session):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
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')
else:
return redirect(url_for('showRestaurants'))
#Edit a restaurant
@app.route('/restaurant/<int:restaurant_id>/edit/', methods = ['GET', 'POST'])
def editRestaurant(restaurant_id):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
if ('user_id' in login_session):
editedRestaurant = session.query(Restaurant).filter_by(id = restaurant_id).one()
if request.method == 'POST':
if request.form['name']:
editedRestaurant.name = request.form['name']
flash('Restaurant Successfully Edited %s' % editedRestaurant.name)
session.commit()
return redirect(url_for('showRestaurants'))
else:
return render_template('editRestaurant.html', restaurant = editedRestaurant)
else:
return render_template('editRestaurant.html', restaurant = editedRestaurant)
else:
return redirect(url_for('showRestaurants'))
#Delete a restaurant
@app.route('/restaurant/<int:restaurant_id>/delete/', methods = ['GET','POST'])
def deleteRestaurant(restaurant_id):
if ('username' in login_session):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
restaurantToDelete = session.query(Restaurant).filter_by(id = restaurant_id).one()
menuItemsToDelete = session.query(MenuItem).filter_by(restaurant_id = restaurant_id).all()
if request.method == 'POST':
session.delete(restaurantToDelete)
flash('%s Successfully Deleted' % restaurantToDelete.name)
for item in menuItemsToDelete:
session.delete(item) #deletes the corresponding menu items for this restaurant!
session.commit()
return redirect(url_for('showRestaurants', restaurant_id = restaurant_id))
else:
return render_template('deleteRestaurant.html',restaurant = restaurantToDelete)
else:
return redirect(url_for('showRestaurants', restaurant_id = restaurant_id))
#Show a restaurant menu
@app.route('/restaurant/<int:restaurant_id>/')
@app.route('/restaurant/<int:restaurant_id>/menu/')
def showMenu(restaurant_id):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
restaurant = session.query(Restaurant).with_entities(Restaurant.name, Restaurant.id).filter_by(id = restaurant_id).one()
items = session.query(MenuItem).with_entities(MenuItem.name, MenuItem.id, MenuItem.description, MenuItem.price, MenuItem.course,
MenuItem.restaurant_id).filter_by(restaurant_id = restaurant_id).all()
if(('user_id' in login_session) and (session.query(Restaurant).filter_by(id = restaurant_id).one() in session.query(Restaurant).filter_by(user_id = login_session['user_id']).all())):
restaurant = session.query(Restaurant).filter_by(id = restaurant_id).one()
items = session.query(MenuItem).filter_by(restaurant_id = restaurant_id).all()
return render_template('menu.html', items = items, restaurant = restaurant)
else:
return render_template('publicmenu.html', items = items, restaurant = restaurant)
#Create a new menu item
@app.route('/restaurant/<int:restaurant_id>/menu/new/',methods=['GET','POST'])
def newMenuItem(restaurant_id):
if ('user_id' in login_session):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
restaurant = session.query(Restaurant).filter_by(id = restaurant_id).one()
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)
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)
else:
return redirect(url_for('showMenu', 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):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
if ('user_id' in login_session):
editedItem = session.query(MenuItem).filter_by(id = menu_id).one()
restaurant = session.query(Restaurant).filter_by(id = restaurant_id).one()
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)
else:
return redirect(url_for('showMenu', restaurant_id = restaurant_id))
#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 ('user_id' in login_session):
DBSession = sessionmaker(bind=engine) #maybe wrong? ADDED
session = DBSession() #maybe wrong? ADDED
restaurant = session.query(Restaurant).filter_by(id = restaurant_id).one()
itemToDelete = session.query(MenuItem).filter_by(id = menu_id).one()
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, restaurant_id = restaurant_id)
else:
return redirect(url_for('showMenu', restaurant_id = restaurant_id))
# 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'))
if __name__ == '__main__':
app.secret_key = 'super_secret_key'
app.debug = True
app.run(host = '0.0.0.0', port = 5000)