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libraryproject.py
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from flask import Flask, render_template, request, redirect, url_for, flash
from flask import jsonify
from sqlalchemy import create_engine, join, desc
from sqlalchemy.orm import sessionmaker
from library_database_setup import Base, User, Author, Book
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
# Creates client id
CLIENT_ID = json.loads(
open('client_secret.json', 'r').read())['web']['client_id']
APPLICATION_NAME = "Restaurant Menu Application"
app = Flask(__name__)
engine = create_engine('sqlite:///librarydatabase.db')
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
session = DBSession()
@app.route('/')
@app.route('/main/')
def frontPage():
loggedin = False
if 'username' in login_session:
print login_session['username']
loggedin = True
authors = session.query(Author).order_by(Author.lastName).all()
joinedBooks = session.query(Book, Author).join(Author)\
.filter(Book.author_id == Author.id)\
.order_by(desc(Book.create_date)).limit(4)\
.values(Book.title, Book.description,
Author.firstName, Author.lastName,
Book.author_id, Book.id, Book.create_date)
result = []
for j in joinedBooks:
result.append({'title': j.title, 'description': j.description,
'author': (j.firstName + " " + j.lastName),
'author_id': j.author_id, 'id': j.id})
return render_template('front.html', authors=authors, booklist=result,
loggedin=loggedin)
@app.route('/authors/')
def showAuthors():
authors = session.query(Author).order_by(Author.lastName).all()
if 'username' in login_session:
return render_template('authors.html', authors=authors, loggedin=True)
else:
return render_template('publicauthors.html', authors=authors,
loggedin=False)
@app.route('/authors/new/', methods=['GET', 'POST'])
def addAuthor():
if 'username' not in login_session:
return redirect('/login')
if request.method == 'POST':
newAuthor = Author(lastName=request.form['lastname'],
firstName=request.form['firstname'],
user_id=login_session['user_id'])
session.add(newAuthor)
session.commit()
flash("Author " + newAuthor.firstName + " " + newAuthor.lastName +
" has been added")
return redirect(url_for('showAuthors', loggedin=True))
else:
return render_template('addauthor.html', loggedin=True)
@app.route('/authors/<int:author_id>/')
def showOneAuthor(author_id):
author = session.query(Author).filter_by(id=author_id).one()
books = session.query(Book).filter_by(author_id=author.id).all()
if 'username' in login_session:
return render_template('oneauthor.html', author=author, books=books,
loggedin=True)
else:
return render_template('publicauthor.html', author=author, books=books,
loggedin=False)
@app.route('/authors/<int:author_id>/edit/', methods=['GET', 'POST'])
def editAuthor(author_id):
if 'username' not in login_session:
return redirect('/login')
editAuthor = session.query(Author).filter_by(id=author_id).one()
if editAuthor.user_id != login_session['user_id']:
return "<script>function myFunction() \
{alert('Only the creator can edit an entry.');}</script>\
<body onload='myFunction()'>"
if request.method == 'POST':
editAuthor.lastName = request.form['lastname']
editAuthor.firstName = request.form['firstname']
session.add(editAuthor)
session.commit()
flash(editAuthor.firstName + " " + editAuthor.lastName +
" was updated.")
return redirect(url_for('showAuthors'))
else:
return render_template('editauthor.html', author=editAuthor)
@app.route('/authors/<int:author_id>/delete/', methods=['GET', 'POST'])
def deleteAuthor(author_id):
if 'username' not in login_session:
return redirect('/login')
deleteAuthor = session.query(Author).filter_by(id=author_id).one()
if request.method == 'POST':
session.delete(deleteAuthor)
session.commit()
flash(deleteAuthor.firstName + " " + deleteAuthor.lastName +
" was deleted.")
return redirect(url_for('showAuthors'))
else:
return render_template('deleteauthor.html', author=deleteAuthor)
@app.route('/authors/<int:author_id>/shelf/new/', methods=['GET', 'POST'])
def addBook(author_id):
if 'username' not in login_session:
return redirect('/login')
if request.method == 'POST':
if request.form['title'] == "":
flash("Book must have title")
return redirect(url_for('showOneAuthor', author_id=author_id))
newBook = Book(title=request.form['title'],
description=request.form['descrip'],
genre=request.form['genre'],
page_count=request.form['pagecount'],
year=request.form['year'],
author_id=author_id,
user_id=login_session['user_id'])
session.add(newBook)
session.commit()
flash("New book " + newBook.title + " was added.")
return redirect(url_for('showOneAuthor', author_id=author_id,
loggedin=True))
else:
author = session.query(Author).filter_by(id=author_id).one()
return render_template('addbook.html', author=author, loggedin=True)
@app.route('/authors/<int:author_id>/shelf/<int:book_id>')
def showBook(author_id, book_id):
author = session.query(Author).filter_by(id=author_id).one()
book = session.query(Book).filter_by(author_id=author_id, id=book_id).one()
if 'username' in login_session:
return render_template('onebook.html', author=author, book=book,
loggedin=True)
else:
return render_template('publicbook.html', author=author, book=book)
@app.route('/authors/<int:author_id>/shelf/<int:book_id>/edit',
methods=['GET', 'POST'])
def editBook(author_id, book_id):
if 'username' not in login_session:
return redirect('/login')
editBook = session.query(Book).filter_by(author_id=author_id, id=book_id)\
.one()
if request.method == 'POST':
editBook.title = request.form['title']
editBook.description = request.form['descrip']
editBook.genre = request.form['genre']
editBook.page_count = request.form['pagecount']
editBook.year = request.form['year']
session.add(editBook)
session.commit()
flash(editBook.title + " was updated.")
return redirect(url_for('showOneAuthor', author_id=author_id))
else:
return render_template('editbook.html', author_id=author_id,
book=editBook)
return "This edits the book with id " + book_id
@app.route('/authors/<int:author_id>/shelf/<int:book_id>/delete',
methods=['GET', 'POST'])
def deleteBook(author_id, book_id):
if 'username' not in login_session:
return redirect('/login')
deleteBook = session.query(Book).filter_by(author_id=author_id,
id=book_id).one()
if request.method == 'POST':
session.delete(deleteBook)
session.commit()
flash(deleteBook.title + " was deleted.")
return redirect(url_for('showOneAuthor', author_id=author_id))
else:
return render_template('deletebook.html', author_id=author_id,
book=deleteBook)
@app.route('/login')
def login():
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)
@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_secret.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_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'
return response
# Store the access token in the session for later use.
login_session['credentials'] = credentials.access_token
login_session['gplus_id'] = gplus_id
login_session['provider'] = 'google'
# 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']
# See if user exists, if it doesnt, make a new one
user_id = getUserID(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: 200px; height: 200px;border-radius: 100px;\
-webkit-border-radius: 100px;-moz-border-radius: 100px;"> '
flash("You are now logged in as %s" % login_session['username'])
return output
@app.route('/disconnect')
def disconnect():
if 'provider' in login_session:
if login_session['provider'] == "google":
gdisconnect()
del login_session['gplus_id']
del login_session['credentials']
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('frontPage'))
else:
flash("You were not logged in")
return redirect(url_for('frontPage'))
@app.route('/gdisconnect')
def gdisconnect():
access_token = login_session.get('credentials')
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' \
% login_session.get('credentials')
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
@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"
# strip expire tag from access token
token = result.split("&")[0]
url = 'https://graph.facebook.com/v2.8/me?%s&fields=name,id,email' % token
h = httplib2.Http()
result = h.request(url, 'GET')[1]
data = json.loads(result)
login_session['provider'] = 'facebook'
login_session['username'] = data["name"]
login_session['email'] = data["email"]
login_session['facebook_id'] = data["id"]
stored_token = token.split("=")[1]
login_session['access_token'] = stored_token
# Get user picture
url = 'https://graph.facebook.com/v2.8/me/picture?%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'])
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']
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."
@app.route('/clearSession')
def clearSession():
login_session.clear()
return "session cleared."
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
# JSON API ENDPOINTS
@app.route('/authors/<int:author_id>/JSON')
def oneAuthorJSON(author_id):
author = session.query(Author).filter_by(id=author_id).one()
books = session.query(Book).filter_by(author_id=author_id).all()
return jsonify(Books=[b.serialize for b in books])
@app.route('/authors/<int:author_id>/shelf/<int:book_id>/JSON')
def bookJSON(author_id, book_id):
book = session.query(Book).filter_by(author_id=author_id, id=book_id).one()
return jsonify(Book=[book.serialize])
@app.route('/authors/JSON')
def authorsJSON():
authors = session.query(Author).all()
return jsonify(Authors=[a.serialize for a in authors])
if __name__ == '__main__':
app.secret_key = 'super_secret_key'
app.debug = True
app.run(host='0.0.0.0', port=5000)