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from datetime import datetime
from flask import Flask, request, url_for, redirect, g, session, flash, \
abort, render_template
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.oauth import OAuth
from juggernaut import Juggernaut
app = Flask(__name__)
app.config.from_pyfile('config.cfg')
db = SQLAlchemy(app)
oauth = OAuth()
jug = Juggernaut()
facebook = oauth.remote_app('facebook',
base_url='https://graph.facebook.com/',
request_token_url=None,
access_token_url='/oauth/access_token',
authorize_url='https://www.facebook.com/dialog/oauth',
consumer_key='188477911223606',
consumer_secret='621413ddea2bcc5b2e83d42fc40495de',
request_token_params={'scope': 'email'}
)
def url_for_other_page(page):
args = request.view_args.copy()
args['page'] = page
return url_for(request.endpoint, **args)
app.jinja_env.globals['url_for_other_page'] = url_for_other_page
class Paste(db.Model):
id = db.Column(db.Integer, primary_key=True)
code = db.Column(db.Text)
pub_date = db.Column(db.DateTime)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
parent_id = db.Column(db.Integer, db.ForeignKey('paste.id'))
parent = db.relationship('Paste', lazy=True, backref='children',
uselist=False, remote_side=[id])
def __init__(self, user, code, parent=None):
self.user = user
self.code = code
self.pub_date = datetime.utcnow()
self.parent = parent
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
display_name = db.Column(db.String(120))
fb_id = db.Column(db.String(30), unique=True)
pastes = db.relationship(Paste, lazy='dynamic', backref='user')
def send_new_paste_notifications(paste, reply):
"""Notifies clients about new pastes."""
user = None
user_id = None
if paste.user:
user = paste.user.display_name
user_id = paste.user.id
data = {'paste_id': paste.id, 'reply_id': reply.id, 'user': user}
jug.publish('paste-replies:%d' % paste.id, data)
if user_id is not None:
jug.publish('user-replies:%d' % user_id, data)
@app.before_request
def check_user_status():
g.user = None
if 'user_id' in session:
g.user = User.query.get(session['user_id'])
@app.route('/', methods=['GET', 'POST'])
def new_paste():
parent = None
reply_to = request.args.get('reply_to', type=int)
if reply_to is not None:
parent = Paste.query.get(reply_to)
if request.method == 'POST' and request.form['code']:
paste = Paste(g.user, request.form['code'], parent=parent)
db.session.add(paste)
db.session.commit()
if parent is not None:
send_new_paste_notifications(parent, paste)
return redirect(url_for('show_paste', paste_id=paste.id))
return render_template('new_paste.html', parent=parent)
@app.route('/<int:paste_id>')
def show_paste(paste_id):
paste = Paste.query.options(db.eagerload('children')).get_or_404(paste_id)
return render_template('show_paste.html', paste=paste)
@app.route('/<int:paste_id>/delete', methods=['GET', 'POST'])
def delete_paste(paste_id):
paste = Paste.query.get_or_404(paste_id)
if g.user is None or g.user != paste.user:
abort(401)
if request.method == 'POST':
if 'yes' in request.form:
db.session.delete(paste)
db.session.commit()
flash('Paste was deleted')
return redirect(url_for('new_paste'))
else:
return redirect(url_for('show_paste', paste_id=paste.id))
return render_template('delete_paste.html', paste=paste)
@app.route('/my-pastes/', defaults={'page': 1})
@app.route('/my-pastes/page/<int:page>')
def my_pastes(page):
if g.user is None:
return redirect(url_for('login', next=request.url))
pagination = Paste.query.filter_by(user=g.user).paginate(page)
return render_template('my_pastes.html', pagination=pagination)
@app.route('/login')
def login():
return facebook.authorize(callback=url_for('facebook_authorized',
next=request.args.get('next') or request.referrer or None,
_external=True))
@app.route('/logout')
def logout():
session.clear()
flash('You were logged out')
return redirect(url_for('new_paste'))
@app.route('/login/authorized')
@facebook.authorized_handler
def facebook_authorized(resp):
next_url = request.args.get('next') or url_for('new_paste')
if resp is None:
flash('You denied the login')
return redirect(next_url)
session['fb_access_token'] = (resp['access_token'], '')
me = facebook.get('/me')
user = User.query.filter_by(fb_id=me.data['id']).first()
if user is None:
user = User()
user.fb_id = me.data['id']
db.session.add(user)
user.display_name = me.data['name']
db.session.commit()
session['user_id'] = user.id
flash('You are now logged in as %s' % user.display_name)
return redirect(next_url)
@facebook.tokengetter
def get_facebook_oauth_token():
return session.get('fb_access_token')
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