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main.py
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main.py
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import webapp2
import jinja2
import os
# from google.cloud import datastore
from webapp2_extras import auth
from webapp2_extras import sessions
from google.appengine.ext.webapp import template
from google.appengine.ext import blobstore
from google.appengine.ext.webapp import blobstore_handlers
from webapp2_extras.auth import InvalidAuthIdError
from webapp2_extras.auth import InvalidPasswordError
# the handler section
the_jinja_env = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
extensions=['jinja2.ext.autoescape'],
autoescape=True)
def user_required(handler):
"""
Decorator that checks if there's a user associated with the current session.
Will also fail if there's no session present.
"""
def check_login(self, *args, **kwargs):
auth = self.auth
print("Reached check login")
if not auth.get_user_by_session():
print("Check login doesn't work")
self.redirect(self.uri_for('login'), abort=True)
else:
print("Check login works")
return handler(self, *args, **kwargs)
return check_login
class BaseHandler(webapp2.RequestHandler):
@webapp2.cached_property
def auth(self):
"""Shortcut to access the auth instance as a property."""
return auth.get_auth()
@webapp2.cached_property
def user_info(self):
"""Shortcut to access a subset of the user attributes that are stored
in the session.
The list of attributes to store in the session is specified in
config['webapp2_extras.auth']['user_attributes'].
:returns
A dictionary with most user information
"""
return self.auth.get_user_by_session()
@webapp2.cached_property
def user(self):
"""Shortcut to access the current logged in user.
Unlike user_info, it fetches information from the persistence layer and
returns an instance of the underlying model.
:returns
The instance of the user model associated to the logged in user.
"""
u = self.user_info
return self.user_model.get_by_id(u['user_id']) if u else None
@webapp2.cached_property
def user_model(self):
"""Returns the implementation of the user model.
It is consistent with config['webapp2_extras.auth']['user_model'], if set.
"""
return self.auth.store.user_model
@webapp2.cached_property
def session(self):
"""Shortcut to access the current session."""
return self.session_store.get_session(backend="datastore")
def render_template(self, view_filename, params={}):
user = self.user_info
params['user'] = user
path = os.path.join(os.path.dirname(__file__), 'templates', view_filename)
self.response.out.write(template.render(path, params))
def display_message(self, message):
"""Utility function to display a template with a simple message."""
params = {
'message': message
}
self.render_template('message.html', params)
# this is needed for webapp2 sessions to work
def dispatch(self):
# Get a session store for this request.
self.session_store = sessions.get_store(request=self.request)
try:
# Dispatch the request.
webapp2.RequestHandler.dispatch(self)
finally:
# Save all sessions.
self.session_store.save_sessions(self.response)
class MainPage(BaseHandler):
@user_required
def get(self):
params = {
'first_name': self.user.first_name,
'logged_in': True
}
self.render_template('index.html',params)
class UploadPhotoPage(BaseHandler,blobstore_handlers.BlobstoreUploadHandler):
@user_required
def get(self):
params = {
'first_name': self.user.first_name,
}
upload_url = blobstore.create_upload_url('/upload_photo')
self.response.out.write(template.render("templates/ProfilePicture.html", params).format(upload_url))
def post(self):
upload = self.get_uploads()[0]
self.user.user_photo = upload.key()
self.user.put()
self.redirect(self.uri_for('home'))
class LogOutPage(BaseHandler):
@user_required
def get(self): #for a get request
self.user.logged_in = False
self.auth.unset_session()
self.redirect(self.uri_for('login'))
class LoginPage(BaseHandler):
def error_login(self, error):
params = {
'bad_login': 'Yes',
'bad_response': error
}
self.render_template('Login.html', params)
def get(self):
self.render_template('Login.html')
def post(self):
username = self.request.get('username')
password = self.request.get('password')
remember_var = self.request.get('remember')
print("Password is " + password)
print("%s is the username " %(username))
try:
u = self.auth.get_user_by_password(username, password, remember=True)
self.redirect(self.uri_for('home'))
except (InvalidAuthIdError, InvalidPasswordError) as e:
if "InvalidPasswordError" in str(type(e)):
self.error_login("Wrong password")
else:
self.error_login("Wrong username")
class SignUpPage(BaseHandler):
def get(self):
self.render_template('Signup.html')
def post(self):
first_name_var = self.request.get('first_name')
last_name_var = self.request.get('last_name')
username_var = self.request.get('username')
password_var = self.request.get('password')
remember_var = self.request.get('remember')
email_var = self.request.get('email')
unique_properties = ['email','username','password']
user_data = self.user_model.create_user(username_var,unique_properties,username=username_var,email=email_var,
password_raw=password_var,logged_in=True,first_name = first_name_var,
last_name=last_name_var
)
if not user_data[0]:
error = {
'bad_login' : 'Yes',
'bad_response' : 'Duplicates for %s ' % (user_data[1])
}
return self.render_template('Signup.html',error)
user = user_data[1]
if remember_var == "on":
print("Remember function says checkbox is on")
self.auth.set_session(self.auth.store.user_to_dict(user), remember=True)
else:
print("Remember function says checkbox is off")
self.auth.set_session(self.auth.store.user_to_dict(user), remember=False)
self.redirect(self.uri_for('UploadPhoto'))
# the app configuration section
config = {
'webapp2_extras.auth': {
'user_model': 'Users.User',
'user_attributes': ['username','password','email','first_name','last_name']
},
'webapp2_extras.sessions': {
'secret_key': '\x0cWh\xd4|\xfd\xe6G\xba\x06\xf7)\xcf\xd32\x14\xc4\xbe\x8e\x10=\x87-r'
}
}
app = webapp2.WSGIApplication([
webapp2.Route('/', handler=MainPage, name='home'),
webapp2.Route('/Logout', handler=LogOutPage, name='logout'),
webapp2.Route('/Login', handler=LoginPage, name='login'),
webapp2.Route('/sign_up', handler=SignUpPage, name='SignUp'),
webapp2.Route('/upload_photo', handler=UploadPhotoPage, name='UploadPhoto'),
], debug=True,config=config)