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finalProject.py
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finalProject.py
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from flask import Flask, render_template, url_for, request, redirect, flash, jsonify
from flask import session as login_session
from flask import make_response
import random, string
from sqlalchemy import create_engine, asc
from sqlalchemy.orm import sessionmaker
from database_setup import Base, Restaurant, MenuItem
from oauth2client.client import flow_from_clientsecrets
from oauth2client.client import FlowExchangeError
import httplib2
import json
import requests
app = Flask(__name__)
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
engine = create_engine('sqlite:///restaurantmenu.db')
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
session = DBSession()
# function showLogin
# args
# none
# return displays login page and provides a STATE to be used by gconnect
@app.route('/login')
def showLogin():
state = ''.join(random.choice(string.ascii_uppercase + string.digits) for x in xrange(32))
login_session['state'] = state
return render_template('login.html', STATE=state)
# function gconnect
# args
# none
# return provides authorization, authentication or throws an error message
@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 objedct
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
login_session['credentials'] = credentials.to_json()
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'
# 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 give 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"), 401)
print "Token's client ID does not match apps's."
response.headers['Content-Type'] = 'application/json'
return response
# Check to see if user is already logged in
stored_credentials = login_session.get('credentials')
stored_gplus_id = login_session.get('gplus_id')
if stored_credentials 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'
# Store the access token in the sessionfor later use.
login_session['credentials'] = credentials.to_json()
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']
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
# DISCONNECT - Revoke a current user's token and reset their login_session
# function gdisconnect
# args
# none
# return removes a login sesion and redirects to login page or displays an error message
@app.route('/gdisconnect')
def gdisconnect():
# Only disconnect a connected user.
credentials = login_session.get('credentials')
if credentials is None:
response = make_response(json.dumps('Current user not connected.'), 401)
response.headers['Content-Type'] = 'application/json'
return response
parsed_json = json.loads(credentials)
access_token = parsed_json['access_token']
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':
# Reset the user's sesson.
del login_session['credentials']
del login_session['gplus_id']
del login_session['username']
del login_session['email']
del login_session['picture']
return redirect('/login')
else:
# For whatever reason, the given token was invalid.
response = make_response(json.dumps('Failed to revoke token for given user.', 400))
response.headers['Content-Type'] = 'application/json'
return response
# function showRestaurants
# args
# none
# return shows a list of restarurants primary landing page
@app.route('/')
@app.route('/restaurants')
def showRestaurants():
restaurants = session.query(Restaurant).all()
return render_template('restaurants.html', restaurants=restaurants)
# function newRestaurant
# args
# none
# return provides a form for adding a new restaurant or shows a restaurant list
@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'])
session.add(newRestaurant)
session.commit()
flash('New Restaurant Created!')
return redirect(url_for('showRestaurants'))
else:
return render_template('newrestaurant.html')
# function editRestaurant
# args
# restaurant_id // id for a particular restaurant
# return provides a a form for editing a restaurant name or shows a restaurant list
@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 request.method == 'POST':
if request.form['name']:
editedRestaurant.name = request.form['name']
session.add(editedRestaurant)
session.commit()
flash('Restaurant Successfully Edited!')
return redirect(url_for('showRestaurants'))
else:
return render_template('editrestaurant.html', restaurant=editedRestaurant)
# function deleteRestaurant
# args
# restaurant_id // id for a particular restaurant
# return deletes a restaurant or shows a restaurant list
@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 request.method == 'POST':
session.delete(restaurantToDelete)
session.commit()
flash('Restaurant Successfully Deleted')
return redirect(url_for('showRestaurants'))
else:
return render_template('deleterestaurant.html', restaurant=restaurantToDelete)
# function newMenuItem
# args
# restaurant_id // id for a particular restaurant
# return shows a menu item for a restaurant
@app.route('/restaurant/<int:restaurant_id>', methods=['GET', 'POST'])
@app.route('/restaurant/<int:restaurant_id>/menu', methods=['GET', 'POST'])
def showMenu(restaurant_id):
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
menuItems = session.query(MenuItem).filter_by(restaurant_id=restaurant_id)
return render_template('menu.html', restaurant=restaurant, items=menuItems)
# function newMenuItem
# args
# restaurant_id // id for a particular restaurant
# return either creates a menu item for a restaurant or shows a menu for a restaurant
@app.route('/restaurant/<int:restaurant_id>/menu/new', methods=['GET', 'POST'])
def newMenuItem(restaurant_id):
if 'username' not in login_session:
return redirect('/login')
if request.method == 'POST':
newMenuItem = MenuItem(name=request.form['name'], description=request.form['description'],
price=request.form['price'], course=request.form['course'], restaurant_id=restaurant_id)
session.add(newMenuItem)
session.commit()
flash('Menu Item Created')
return redirect(url_for('showMenu', restaurant_id=restaurant_id))
else:
return render_template('newmenuitem.html', restaurant_id=restaurant_id)
# function editMenuItem
# args
# restaurant_id // id for a particular restaurant
# menu_id // id for a particular menu
# return either edits a menu item for a restaurant or shows a menu for a restaurant
@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')
editedMenuItem = session.query(MenuItem).filter_by(id=menu_id).one()
if request.method == 'POST':
if request.form['name']:
editedMenuItem.name = request.form['name']
if request.form['course']:
editedMenuItem.course = request.form['course']
if request.form['description']:
editedMenuItem.description = request.form['description']
if request.form['price']:
editedMenuItem.price = request.form['price']
session.add(editedMenuItem)
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, i=editedMenuItem)
# function deleteMenuItem
# args
# restaurant_id // id for a particular restaurant
# menu_id // id for a particular menu
# return either deletes a menu item for a restaurant or shows a menu for a restaurant
@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')
menuItemToDelete = session.query(MenuItem).filter_by(id=menu_id).one()
if request.method == 'POST':
session.delete(menuItemToDelete)
session.commit()
flash('Menu Item Successfully Deleted')
return redirect(url_for('showMenu', restaurant_id=restaurant_id))
else:
return render_template('deletemenuitem.html', restaurant_id=restaurant_id, menu=menuItemToDelete)
# JSON API
# Returns JSON object containing all restaurants
@app.route('/restaurants/JSON')
def restaurantsJSON():
allRestaurants = session.query(Restaurant).all()
return jsonify(Restaurant=[i.serialize for i in allRestaurants])
# JSON API
# Returns JSON object containing a menu for a restaurant
@app.route('/restaurants/<int:restaurant_id>/menu/JSON')
def restaurantMenuJSON(restaurant_id):
restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one()
menuItems = session.query(MenuItem).filter_by(restaurant_id=restaurant_id)
return jsonify(MenuItem=[i.serialize for i in menuItems])
# JSON API
# Returns JSON object containing menu item from a menu for a restaurant
@app.route('/restaurants/<int:restaurant_id>/menu/<int:menu_id>/JSON/')
def restaurantMenuDetailJSON(restaurant_id, menu_id):
item = session.query(MenuItem).filter_by(id=menu_id).one()
return jsonify(MenuItem=item.serialize)
# main
# run app on web server localhost port 5000
# store secret key for app
# debug is on
if __name__ == '__main__':
app.secret_key = 'super_secret_key'
app.debug = True
app.run(host='0.0.0.0', port=5000)