main.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 from flask import Flask, request, session, g, redirect, url_for, abort, \
   5     render_template, flash
   6 import sqlite3
   7 from datetime import date, timedelta
   8 from contextlib import closing
   9 import locale
  10 locale.setlocale(locale.LC_ALL, '')
  11
  12 DATABASE = '/tmp/cavote.db'
  13 SECRET_KEY = '{J@uRKO,xO-PK7B,jF?>iHbxLasF9s#zjOoy=+:'
  14 DEBUG = True
  15 USERNAME = 'admin'
  16 PASSWORD = 'admin'
  17
  18 app = Flask(__name__)
  19 app.config.from_object(__name__)
  20
  21 def connect_db():
  22     return sqlite3.connect(app.config['DATABASE'])
  23
  24 @app.before_request
  25 def before_request():
  26     g.db = connect_db()
  27
  28 @app.teardown_request
  29 def teardown_request(exception):
  30     g.db.close()
  31
  32 @app.route('/')
  33 def home():
  34     return render_template('index.html')
  35
  36 def query_db(query, args=(), one=False):
  37     cur = g.db.execute(query, args)
  38     rv = [dict((cur.description[idx][0], value)
  39         for idx, value in enumerate(row)) for row in cur.fetchall()]
  40     return (rv[0] if rv else None) if one else rv
  41
  42 def init_db():
  43     with closing(connect_db()) as db:
  44         with app.open_resource('schema.sql') as f:
  45             db.cursor().executescript(f.read())
  46         db.commit()
  47
  48 #----------------
  49 # Login / Logout
  50
  51 def valid_login(username, password):
  52     return username == app.config['USERNAME'] and password == app.config['PASSWORD']
  53
  54 @app.route('/login', methods=['GET', 'POST'])
  55 def login():
  56     error = None
  57     if request.method == 'POST':
  58         if valid_login(request.form['username'], request.form['password']):
  59             session['username'] = request.form['username']
  60             if session['username'] == 'admin':
  61                 session['is_admin'] = True
  62             flash('You were logged in')
  63             return redirect(url_for('home'))
  64         else:
  65             error = "Invalid username/password"
  66     return render_template('login.html', error=error)
  67
  68 @app.route('/logout')
  69 def logout():
  70     session.pop('username', None)
  71     session.pop('is_admin', None)
  72     flash('You were logged out')
  73     return redirect(url_for('home'))
  74
  75 #---------------
  76 # User settings
  77 @app.route('/user/settings/<username>')
  78 def show_settings(username):
  79     if username != session['username']:
  80         abort(401)
  81
  82
  83 #------------
  84 # User admin
  85
  86
  87 #------------
  88 # Votes list
  89
  90 @app.route('/votes/<votes>')
  91 def show_votes(votes):
  92     today = date.today()
  93     if votes == 'all':
  94         votes = query_db('select title, description, date_begin, date_end from votes order by id desc')
  95     elif votes == 'archive':
  96         votes = query_db('select title, description, date_begin, date_end from votes where date_end < (?) order by id desc', [today])
  97     elif votes == 'current':
  98         votes = query_db('select title, description, date_begin, date_end from votes where date_end >= (?) order by id desc', [today])
  99     else:
 100         abort(404)
 101     return render_template('show_votes.html', votes=votes)
 102
 103 #-------------
 104 # Votes admin
 105
 106 @app.route('/votes/admin/new')
 107 def new_vote():
 108     if not session.get('is_admin'):
 109         abort(401)
 110     return render_template('new_vote.html')
 111
 112 @app.route('/votes/admin/add', methods=['POST'])
 113 def add_vote():
 114     if not session.get('is_admin'):
 115         abort(401)
 116     date_begin = date.today()
 117     date_end = date.today() + timedelta(days=int(request.form['days']))
 118     transparent = 0
 119     public = 0
 120     multiplechoice = 0
 121     if 'transparent' in request.form.keys():
 122         transparent = 1
 123     if 'public' in request.form.keys():
 124         public = 1
 125     if 'multiplechoice' in request.form.keys():
 126         multiplechoice = 1
 127     g.db.execute('insert into votes (title, description, date_begin, date_end, is_transparent, is_public, is_multiplechoice) values (?, ?, ?, ?, ?, ?, ?)',
 128             [request.form['title'], request.form['description'], date_begin, date_end, transparent, public, multiplechoice])
 129     g.db.commit()
 130     flash('New entry was successfully posted')
 131     return redirect(url_for('home'))
 132
 133 #------
 134 # Main
 135
 136 if __name__ == '__main__':
 137     app.run()
 138