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final_project.py
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final_project.py
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from helpers import search_db, get_galleries, get_artists, get_artworks, get_artwork
from helpers import create_gallery, edit_gallery, delete_gallery, new_artwork
from helpers import edit_artwork, delete_artwork, create_user, get_user_info, get_user_id
from flask import Flask, render_template, url_for, request, redirect, flash, jsonify
from flask import session as login_session
import random, string
from oauth2client.client import flow_from_clientsecrets
from oauth2client.client import FlowExchangeError
import httplib2
import json
from flask import make_response
import requests
from functools import wraps
from flask.ext.seasurf import SeaSurf
from gallerydatabase_setup import Galleries, Inventory
app = Flask(__name__)
# Cross site forgery request protection
csrf = SeaSurf(app)
# client secret for google authentication
CLIENT_ID = json.loads(open('client_secrets.json', 'r').read())['web']['client_id']
# public access urls routes
@app.route('/', methods=['GET', 'POST'])
@app.route('/galleries/', methods=['GET', 'POST'])
def galleryList():
"Main page. Shows a list of the galleries in the database with details."
# The only POST request is the search box
if request.method == 'POST':
search = request.form['search']
if search:
results = search_db(search)
return render_template('search.html', results=results)
else:
# the GET request renders the page
galleries = get_galleries()
# check if user is logged in
if 'user_id' in login_session:
user_id = login_session['user_id']
else:
user_id = None
return render_template('galleries2.html', galleries=galleries,
user_id=user_id)
@app.route('/artists/', methods=['GET', 'POST'])
def artistList():
"Artists page. Lists all the artists in the db."
# The only POST request is the search box
if request.method == 'POST':
search = request.form['search']
if search:
results = search_db(search)
return render_template('search.html', results=results)
# the GET request renders the page
else:
# query to get the artists in the gallery inventory
artists = get_artists()
return render_template('all_artists.html', artists=artists)
@app.route('/artist_works/<artist_name>', methods=['GET', 'POST'])
def artistWorks(artist_name):
"List of all the works in the db for a specific artist."
# The only POST request is the search box
if request.method == 'POST':
search = request.form['search']
if search:
results = search_db(search)
return render_template('search.html', results=results)
else:
# query to get the artworks of the specific artist
artworks = get_artworks(artist_name)
return render_template('artist_works.html', artist=artist_name,
artworks=artworks)
@app.route('/gallery/<int:gallery_id>/')
@app.route('/gallery/<int:gallery_id>/inventory/', methods=['GET', 'POST'])
def galleryInventory(gallery_id):
'''Inventory of works for a specific gallery. Artworks are only editable if
user is the gallery administrator'''
gallery = get_galleries(gallery_id)
items = get_artworks(gallery_id=gallery_id)
if 'username' not in login_session or gallery.user_id != login_session[
'user_id']:
return render_template('public_inventory.html', gallery=gallery,
items=items)
else:
return render_template('inventory.html', gallery=gallery, items=items)
@app.route('/gallery/<int:gallery_id>/artists/')
def galleryArtists(gallery_id):
'''Lists all the artists of a specific gallery'''
gallery = get_galleries(gallery_id)
artists = get_artists(gallery_id)
return render_template('artists.html', gallery=gallery, artists=artists)
@app.route('/gallery/<int:gallery_id>/artists/<artist_name>')
def artistInventory(gallery_id, artist_name):
'''Lists all the works of a specific artist in a specific gallery.
Artworks are only editable if user is the gallery administrator'''
gallery = get_galleries(gallery_id)
items = get_artworks(artist_name, gallery_id)
if 'username' not in login_session or gallery.user_id != login_session[
'user_id']:
return render_template('public_artistinventory.html', items=items,
artist=artist_name, gallery=gallery)
else:
return render_template('artistinventory.html', items=items,
artist=artist_name, gallery=gallery)
# For the following urls the user need to be logged in.
def login_required(f):
'''Login required decorator. use this to decorate all the routes where the
user has to be logged in. If the user isn't logged in, it redirects to the
login page'''
@wraps(f)
def decorated_function(*args, **kwargs):
if 'username' not in login_session:
return redirect(url_for('showLogin', next_url=request.url))
return f(*args, **kwargs)
return decorated_function
@app.route('/gallery/new/', methods=['GET', 'POST'])
@login_required
def newGallery():
'''Create a new gallery'''
# POST request is the form with the details of the new gallery
if request.method == 'POST':
create_gallery(request.form, login_session['user_id'])
# flash message confirmation
flash('New gallery created')
return redirect(url_for('galleryList'))
# GET request renders the page
else:
return render_template('newgallery.html')
@app.route('/gallery/<int:gallery_id>/edit/', methods=['GET', 'POST'])
@login_required
def editGallery(gallery_id):
'''Edit the details of an existing gallery. For this the user has to
be the administrator of the gallery.'''
# gallery = session.query(Galleries).filter_by(id=gallery_id).one()
gallery = get_galleries(gallery_id)
# check if user is authorised
if gallery.user_id != login_session['user_id']:
response = make_response(json.dumps(
"You don't have permission to edit this gallery"), 200)
response.headers['Content-Type'] = 'application/json'
return response
# POST request is the form to edit the details
if request.method == 'POST':
edit_gallery(request.form, gallery)
flash('Gallery edited')
return redirect(url_for('galleryList'))
# GET request renders the page
else:
return render_template('editgallery.html', gallery=gallery)
@app.route('/gallery/<int:gallery_id>/delete', methods=['GET', 'POST'])
@login_required
def deleteGallery(gallery_id):
'''Delete an existing gallery. For this the user has to be the administrator
of the gallery.'''
# get the objects from the DB
gallery = get_galleries(gallery_id)
items = get_artworks(gallery_id=gallery_id)
# check if the user is authorised to delete the gallery
if gallery.user_id != login_session['user_id']:
response = make_response(json.dumps(
"You don't have permission to delete this gallery"), 200)
response.headers['Content-Type'] = 'application/json'
return response
if request.method == 'POST':
# delete the items in the gallery inventory, then the gallery from
# the db
delete_gallery(gallery, items)
flash('Gallery deleted')
return redirect(url_for('galleryList'))
else:
return render_template('deletegallery.html', gallery=gallery)
@app.route('/gallery/<int:gallery_id>/inventory/new/', methods=['GET', 'POST'])
@login_required
def newInventoryItem(gallery_id):
'''Add an artwork to the inventory of a gallery, user has to be the
administrator of the gallery'''
gallery = get_galleries(gallery_id)
# check if user is authorised
if gallery.user_id != login_session['user_id']:
response = make_response(json.dumps(
"You don't have permission to add an item to this gallery"), 200)
response.headers['Content-Type'] = 'application/json'
return response
# POST request is the form for the new artwork
if request.method == 'POST':
new_artwork(request.form, gallery_id)
flash('New artwork added')
return redirect(url_for('galleryInventory', gallery_id=gallery_id))
# GET request renders the page
else:
return render_template('newitem.html', gallery=gallery)
@app.route('/gallery/<int:gallery_id>/inventory/<int:item_id>/edit/',
methods=['GET', 'POST'])
@login_required
def editInventoryItem(gallery_id, item_id):
'''Edit an artwork to the inventory of a gallery, user has to be the
administrator of the gallery'''
gallery = get_galleries(gallery_id)
# check if user is authorised
if gallery.user_id != login_session['user_id']:
response = make_response(json.dumps(
"You don't have permission to edit items for this gallery"), 200)
response.headers['Content-Type'] = 'application/json'
return response
item = get_artwork(item_id)
# POST request is the form to edit artwork
if request.method == 'POST':
edit_artwork(request.form, item)
flash('Item edited')
return redirect(url_for('galleryInventory', gallery_id=gallery_id))
# GET request renders the page
else:
return render_template('edititem.html', gallery_id=gallery_id,
item=item)
@app.route('/gallery/<int:gallery_id>/inventory/<int:item_id>/delete/',
methods=['GET', 'POST'])
@login_required
def deleteInventoryItem(gallery_id, item_id):
'''Edit an artwork of a gallery, user has to be the administrator of the
gallery'''
gallery = get_galleries(gallery_id)
# check if user is authorised
if gallery.user_id != login_session['user_id']:
response = make_response(json.dumps(
"You don't have permission to delete items for this gallery"), 200)
response.headers['Content-Type'] = 'application/json'
return response
item = get_artwork(item_id)
if request.method == 'POST':
delete_artwork(item)
flash('Item deleted')
return redirect(url_for('galleryInventory', gallery_id=gallery_id))
else:
return render_template('deleteitem.html', item=item,
gallery_id=gallery_id)
@app.route('/login')
def showLogin():
'''Login page'''
state = ''.join(random.choice(string.ascii_uppercase + string.
digits) for x in xrange(32))
login_session['state'] = state
next_url = request.args.get('next_url') or '/galleries'
print 'in showLogin, next_url: ', next_url
return render_template('login.html', STATE=state, next_url=next_url)
@csrf.exempt
@app.route('/gconnect', methods=['POST'])
def gconnect():
'''Oauth with Google account'''
if request.args.get('state') != login_session['state']:
response = make_response(json.dumps('Invalid state'), 401)
response.headers['Content-Type'] = 'application/json'
return response
code = request.data
try:
# upgrade the authorisation code into a credential 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 auth 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'
# 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
# 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'
return response
# store the access token in the session for later use
login_session['credentials'] = credentials
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 = json.loads(answer.text)
login_session['username'] = data['name']
login_session['email'] = data['email']
login_session['picture'] = data['picture']
login_session['provider'] = 'google'
# check if user exists in the db
user_id = get_user_id(data['email'])
if user_id is None:
user_id = create_user(login_session)
login_session['user_id'] = user_id
output = 'Welcome ' + login_session['username']
flash('you are logged in as %s' % login_session['username'])
return output
@app.route('/gdisconnect')
def gdisconnect():
'''Oauth disconnect of user connected with Google'''
# only disconnect a connected user
credentials = login_session.get('credentials')
print 'credentials:', credentials
if credentials is None:
response = make_response(json.dumps('Current user not connected.'), 401)
response.headers['Content-Type'] = 'application/json'
return response
# execute HTTP GET request to revoke current token
access_token = credentials.access_token
print 'access_token:', 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':
# if for whatever reason the token was invalid
response = make_response(json.dumps(
'Failed to revoke token for given user'), 400)
response.headers['Content-Type'] = 'application/json'
return response
@csrf.exempt
@app.route('/fbconnect', methods=['POST'])
def fbconnect():
'''Oauth with Facebook account'''
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
# Exchange client token for long-lived server side token with GET /oauth/
# acces_token?grant_type=fb_exchange_token&client_id={app-id}
# &client_secret={app-secret}&fb_exchange_token={short-lived-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/v2.3/me'
# strip expire tag from access token
token = result.split('&')[0]
url = 'https://graph.facebook.com/v2.3/me?%s' % 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']
# The token must be stored in the login_session in order to properly logout,
# let's strip out the information before the equals sign in our token
stored_token = token.split("=")[1]
login_session['access_token'] = stored_token
# check if user exists in the db
user_id = get_user_id(data['email'])
if user_id is None:
user_id = create_user(login_session)
login_session['user_id'] = user_id
output = 'welcome ' + login_session['username']
flash('you are logged in as %s' % login_session['username'])
return output
@app.route('/fbdisconnect')
def fbdisconnect():
'''Oauth disconnect for users of Facebook'''
facebook_id = login_session['facebook_id']
access_token = login_session['access_token']
url = 'https://graph.facebook.com/%s/permissions' % facebook_id
h = httplib2.Http()
result = h.request(url, 'DELETE')[1]
return 'you have been logged out.'
@app.route('/disconnect')
def disconnect():
'''General disconnect, Will call the method specific to the oauth
provider'''
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['user_id']
del login_session['provider']
flash('You have successfully been logged out.')
return redirect(url_for('galleryList'))
else:
flash('You were not logged in.')
return redirect(url_for('galleryList'))
# API endpoints
@app.route('/galleries/JSON')
def galleryListJSON():
galleries = get_galleries()
return jsonify(Galleries=[i.serialize for i in galleries])
@app.route('/gallery/<int:gallery_id>/inventory/JSON')
def inventoryJSON(gallery_id):
gallery = get_galleries(gallery_id)
items = get_artworks(gallery_id=gallery_id)
return jsonify(Inventory=[i.serialize for i in items])
@app.route('/gallery/<int:gallery_id>/inventory/<int:artwork_id>/JSON')
def itemJSON(gallery_id, artwork_id):
item = get_artwork(artwork_id)
return jsonify(Inventory=item.serialize)
if __name__ == '__main__':
app.secret_key = 'super_secret_key'
app.debug = True
app.run(host='0.0.0.0', port=8050)