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app.py
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app.py
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from database import db_session
from flask import Flask, request, session, g, redirect, url_for, abort, render_template, jsonify
import uuid
import hmac
from oauth2client import client
from hashlib import sha1
from dao.userdao import UserDao
from dao.pagedao import PageDao
from dao.elementdao import ElementDao
import json
# Flask Configuration
app = Flask(__name__)
app.config.from_pyfile('default.conf.py')
# Google OAuth flow object
flow = client.flow_from_clientsecrets(
'client_secrets.json',
scope='https://www.googleapis.com/auth/plus.login',
redirect_uri='http://127.0.0.1:5000/oauth2callback')
# Load default config and override config from an environment variable
app.config.update(dict(
DEBUG=True,
))
app.config.from_envvar('FLASKR_SETTINGS', silent=True)
@app.teardown_appcontext
def shutdown_session(exception=None):
db_session.remove()
@app.route("/")
def index():
if 'logged_in_user' not in session:
return redirect("/login")
curr_user = UserDao.does_user_exist(session['logged_in_user'])
res = {'api_key': curr_user.api_key}
return render_template('index.html', res=res)
@app.route('/login', methods=['GET','POST'])
def login():
res = {'oauth_url': flow.step1_get_authorize_url()}
return render_template('login.html', res=res)
@app.route('/oauth2callback')
def oauth_success():
auth_code = request.args.get('code')
credentials = flow.step2_exchange(auth_code)
unique_id = credentials.id_token['sub']
curr_user = UserDao.does_user_exist(unique_id)
if not curr_user:
curr_user = UserDao.add_user(unique_id,"",_generate_key(),credentials.access_token)
session['logged_in_user'] = curr_user.id
return redirect("/")
@app.route("/logout")
def logout():
session.pop('logged_in_user', None)
return redirect('/login')
# API
@app.route('/api/site/<site_id>/pages', methods=['GET','POST'])
def pages(site_id):
if not _valid_api_key(request):
return _access_denied()
if request.method == 'POST':
return create_page(request, site_id)
else:
return show_pages(site_id)
@app.route('/api/site/<site_id>/page/<page_id>', methods=['GET','PUT','DELETE'])
def access_page(site_id,page_id):
if not _valid_api_key(request):
return _access_denied()
if request.method == 'PUT':
return update_page(page_id)
if request.method == 'DELETE':
return delete_page(page_id)
else:
return get_page(page_id)
def show_pages(site_id):
pages = PageDao.get_pages_by_site(site_id)
data = []
for page in pages:
data.append(page.to_dict())
return _success_message(data,200)
def get_page(page_id):
curr_page = PageDao.get_page(page_id)
if curr_page:
return jsonify(curr_page.to_dict())
else:
return _error_message("Invalid Page Id", 400)
def create_page(request, site_id):
page_json = request.get_json()
try:
_verify_page(page_json)
new_page = PageDao.add_page(page_json['name'], site_id, page_json['order'])
_add_elements(page_json['elements'], new_page.id)
ret_page = PageDao.get_page(new_page.id)
return _success_message(ret_page.to_dict(),201)
except ValueError as e:
return _error_message(str(e), 400)
def update_page(page_id):
page_json = request.get_json()
try:
_verify_page(page_json)
new_page = PageDao.update_page(page_json['name'], page_id, page_json['order'])
ElementDao.delete_elements(page_id)
_add_elements(page_json['elements'], page_id)
ret_page = PageDao.get_page(new_page.id)
return _success_message(ret_page.to_dict(), 200)
except ValueError as e:
return _error_message(str(e), 400)
def delete_page(page_id):
PageDao.delete_page(page_id)
return _success_message("Page Deleted", 200)
def _valid_api_key(request):
if 'Authorization' in request.headers:
api_key = request.headers['Authorization']
if UserDao.valid_api_key(api_key):
return True
return False
def _add_elements(elements, page_id):
for i, element in enumerate(elements):
ElementDao.add_element(element['type'], page_id, i, element['content'])
def _verify_page(json):
if 'name' not in json:
raise ValueError("A Page requires a name.")
if 'order' not in json:
raise ValueError("A Page requires an order.")
def _access_denied():
return _error_message("Invalid API Key.", 401)
def _generate_key():
new_uuid = uuid.uuid4()
return hmac.new(str(new_uuid), digestmod=sha1).hexdigest()
def _error_message(msg, status):
return jsonify(status="error", data=msg), status
def _success_message(msg, status):
return jsonify(status="success", data=msg), status
if __name__ == "__main__":
app.run(debug=True)