#!/usr/bin/env python
# -*- coding: utf-8 -*-

from flask import Flask, request, session, g, redirect, url_for, abort, \
    render_template, flash
from flask_openid import OpenID
from flaskext.babel import Babel, gettext, ngettext
import sqlite3
from datetime import date, time, timedelta, datetime
import time
from contextlib import closing
import locale
locale.setlocale(locale.LC_ALL, '')
import os
import hashlib
import smtplib
import string

from settings import *

app = Flask(__name__) 
app.config.from_object(__name__)

oid = OpenID(app)
babel = Babel(app)

def connect_db():
    return sqlite3.connect(app.config['DATABASE'])

@app.before_request
def before_request():
    g.db = connect_db()
    g.db.execute("PRAGMA foreign_keys = ON")

@app.teardown_request
def teardown_request(exception):
    g.db.close()

@app.route('/')
def home():
    return render_template('index.html', active_button="home")

def query_db(query, args=(), one=False):
    cur = g.db.execute(query, args)
    rv = [dict((cur.description[idx][0], value)
        for idx, value in enumerate(row)) for row in cur.fetchall()]
    return (rv[0] if rv else None) if one else rv

def init_db():
    with closing(connect_db()) as db:
        with app.open_resource('schema.sql') as f:
            db.cursor().executescript(f.read())
        db.commit()

#----------------
# Login / Logout

def valid_login(email, password):
    # get user key
    user_key = query_db('select key from users where email = ?', (email,),
            one=True)
    if not user_key:
        # no such user
        return None
    user_key = user_key['key']
    # try password
    return query_db('select * from users where email = ? and password = ?',
            [email, crypt(password, user_key)], one=True)

def connect_user(user):
    session['user'] = user
    del session['user']['password']
    del session['user']['key']

def disconnect_user():
    session.pop('user', None)

def crypt(passwd, user_key):
    # the per-user salt should not be stored in the db
    # storing the passwd... but this is better than nothing
    per_user_salt = hashlib.sha1(user_key).hexdigest()
    salt_passwd = '%s%s%s' % (app.config['PASSWD_SALT'], per_user_salt, passwd)
    return hashlib.sha1(salt_passwd).hexdigest()

def keygen():
    return hashlib.sha1(os.urandom(24)).hexdigest()

def get_userid():
    user = session.get('user')
    if user is None: 
        return -1
    elif user.get('id') < 0:
        return -1
    else:
        return user.get('id')

@app.route('/login', methods=['GET', 'POST'])
@oid.loginhandler
def login():
    if request.method == 'POST':
        user = valid_login(request.form['username'], request.form['password'])
        if user is None:
            if request.form['openid']:
                return oid.try_login(request.form['openid'], ask_for=['email', 'fullname', 'nickname'])
            else:
                flash(u'Email ou mot de passe invalide.', 'error')
        else:
            connect_user(user)
            flash(u'Vous êtes connecté. Bienvenue, %s !' % user['name'], 'success')
            if request.args.get('continue'):
                return redirect(request.args['continue'])
            return redirect(url_for('home'))
    return render_template('login.html')

@oid.after_login
def create_or_login(resp):
    openid_url = resp.identity_url
    user = query_db('select * from users where openid = ?', [openid_url], one=True)
    if user is not None:
        flash(gettext(u'Successfully signed in'))
        connect_user(user)
        return redirect(oid.get_next_url())
    return redirect(url_for('home'))

@app.route('/logout')
def logout():
    disconnect_user()
    flash(u'Vous avez été déconnecté.', 'info')
    if request.args.get('continue') and not "admin" in request.args.get('continue'):
        return redirect(request.args['continue'])
    return redirect(url_for('home'))

#-----------------
# Change password

@app.route('/password/lost', methods=['GET', 'POST'])
def password_lost():
    info = None
    if request.method == 'POST':
        user = query_db('select * from users where email = ?', [request.form['email']], one=True)
        if user is None:
            flash('Cet utilisateur n\'existe pas !', 'error')
        else:
            key = 'v%s' % keygen() # start with v: valid key
            g.db.execute('update users set key = ? where id = ?', [key, user['id']])
            g.db.commit()
            link = request.url_root + url_for('login_key', userid=user['id'], key=key)
            BODY = string.join((
                "From: %s" % EMAIL,
                "To: %s" % user['email'],
                "Subject: [Cavote] %s" % gettext(u"Lost password"),
                "Date: %s" % time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime()).decode('utf-8'),
                "X-Mailer: %s" % VERSION,
                "",
                gettext(u"It seems that you have lost your password."),
                gettext(u"This link will log you without password."),
                gettext(u"Don't forget to define a new one as soon a possible!"),
                gettext(u"This link will only work one time."),
                "",
                link,
                "",
                gettext(u"If you think this mail is not for you, please ignore and delete it.")
                ), "\r\n")
            server = smtplib.SMTP(SMTP_SERVER)
            server.sendmail(EMAIL, [user['email']], BODY.encode('utf-8'))
            server.quit()
            flash(u"Un mail a été envoyé à " + user['email'], 'info')
    return render_template('password_lost.html')

@app.route('/login/<userid>/<key>')
def login_key(userid, key):
    user = query_db('select * from users where id = ? and key = ?', [userid, key], one=True)
    if user is None or user['key'][0] != "v":
        abort(404)
    else:
        connect_user(user)
        flash(u"Veuillez mettre à jour votre mot de passe", 'info')
        return redirect(url_for('user_password', userid=user['id']))

#---------------
# User settings

@app.route('/user/<userid>')
def user(userid):
    if int(userid) != get_userid():
        abort(401)
    groups = query_db('select * from groups join user_group on id=id_group where id_user = ?', (userid,))
    return render_template('user.html', groups=groups)

@app.route('/user/settings/<userid>', methods=['GET', 'POST'])
def user_edit(userid):
    if int(userid) != get_userid():
        abort(401)
    if request.method == 'POST':
        if query_db('select * from users where email=? and id!=?', [request.form['email'], userid], one=True) is None:
            if query_db('select * from users where name=? and id!=?', [request.form['name'], userid], one=True) is None:
                g.db.execute('update users set email = ?, openid = ?, name = ?, organization = ? where id = ?',
                        [request.form['email'], request.form['openid'], request.form['name'], request.form['organization'], session['user']['id']])
                g.db.commit()
                disconnect_user()
                user = query_db('select * from users where id=?', [userid], one=True)
                if user is None:
                    flash(u'Une erreur s\'est produite.', 'error')
                    return redirect(url_for('login'))
                connect_user(user)
                flash(u'Votre profil a été mis à jour !', 'success')
            else:
                flash(u'Le nom ' + request.form['name'] + u' est déjà pris ! Veuillez en choisir un autre.', 'error')
        else:
            flash(u'Il existe déjà un compte pour cette adresse e-mail : ' + request.form['email'], 'error')
    return render_template('user_edit.html')

@app.route('/user/password/<userid>', methods=['GET', 'POST'])
def user_password(userid):
    if int(userid) != get_userid():
        abort(401)
    if request.method == 'POST':
        if request.form['password'] == request.form['password2']:
            # new (invalid) key
            key = 'i%s' % keygen() # start with i: invalid key
            print "\n\nchange key for %s\n" % key # FIXME TMP
            g.db.execute('update users set password = ?, key = ? where id = ?', [crypt(request.form['password'], key), key, session['user']['id']])
            g.db.commit()
            flash(u'Votre mot de passe a été mis à jour.', 'success')
        else:
            flash(u'Les mots de passe sont différents.', 'error')
    return render_template('user_edit.html')

#------------
# User admin

@app.route('/admin/users')
def admin_users():
    if not session.get('user').get('is_admin'):
        abort(401)
    tuples = query_db('select *, groups.name as groupname from (select *, id as userid, name as username from users join user_group on id=id_user order by id desc) join groups on id_group=groups.id')
    users = dict()
    for t in tuples:
        if t['userid'] in users:
            users[t['userid']]['groups'].append(t["groupname"])
        else:
            users[t['userid']] = dict()
            users[t['userid']]['userid'] = t['userid']
            users[t['userid']]['email'] = t['email']
            users[t['userid']]['username'] = t['username']
            users[t['userid']]['is_admin'] = t['is_admin']
            users[t['userid']]['groups'] = [t['groupname']]

    return render_template('admin_users.html', users=users.values())

@app.route('/admin/users/add', methods=['GET', 'POST'])
def admin_user_add():
    if not session.get('user').get('is_admin'):
        abort(401)
    if request.method == 'POST':
        if request.form['email']:
            if query_db('select * from users where email=?', [request.form['email']], one=True) is None:
                if request.form['username']:
                    if query_db('select * from users where name=?', [request.form['username']], one=True) is None:
                        admin = 0
                        if 'admin' in request.form.keys():
                            admin = 1
                        key = 'v%s' % keygen()
                        g.db.execute('insert into users (email, openid, name, organization, password, is_admin, key) values (?, ?, ?, ?, ?, ?, ?)',
                                [request.form['email'],
                                    request.form['openid'],
                                    request.form['username'],
                                    request.form['organization'],
                                    '', admin, key])
                        g.db.commit()
                        user = query_db('select * from users where email = ?', [request.form["email"]], one=True)
                        if user:
                            groups = request.form.getlist('groups')
                            groups.append('1')
                            for group in groups:
                                if query_db('select id from groups where id = ?', group, one=True) is None:
                                    flash(u'Le groupe portant l\'id %s n\'existe pas.' % group, 'warning')
                                else:
                                    g.db.execute('insert into user_group values (?, ?)', [user['id'], group])
                                    g.db.commit()
                            link = request.url_root + url_for('login_key', userid=user['id'], key=user['key'])
                            BODY = string.join((
                            "From: %s" % EMAIL,
                            "To: %s" % user['email'],
                            "Subject: [Cavote] %s" % gettext(u"Welcome"),
                            "Date: %s" % time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime()).decode('utf-8'),
                            "X-Mailer: %s" % VERSION,
                            "",
                            "%(text)s %(user)s!" % {"text": gettext(u"Hi"), "user": user['name']},
                            "%(text2)s %(title)s." % {"text2": gettext(u"Welcome on"), "title": TITLE},
                            "%(text3)s %(email)s." % {"text3": gettext(u"Your account address is"), "email": user['email']},
                            "",
                            gettext(u"To log in for the first time and set your password, please follow this link :"),
                            link,
                            ""
                            ), "\r\n")
                            server = smtplib.SMTP(SMTP_SERVER)
                            server.sendmail(EMAIL, [user['email']], BODY.encode('utf-8'))
                            server.quit()
                            flash(u'Le nouvel utilisateur a été créé avec succès', 'success')
                            return redirect(url_for('admin_users'))
                        else:
                            flash(u'Une erreur s\'est produite.', 'error')
                    else:
                        flash(u'Le nom ' + request.form['username'] + u' est déjà pris ! Veuillez en choisir un autre.', 'error')
                else:
                    flash(u"Vous devez spécifier un nom d'utilisateur.", 'error')
            else:
                flash(u'Il existe déjà un compte pour cette adresse e-mail : ' + request.form['email'], 'error')
        else:
            flash(u"Vous devez spécifier une adresse email.", 'error')
    groups = query_db('select * from groups where system=0') 
    return render_template('admin_user_new.html', groups=groups)

@app.route('/admin/users/edit/<iduser>', methods=['GET', 'POST'])
def admin_user_edit(iduser):
    if not session.get('user').get('is_admin'):
        abort(401)
    user = query_db('select * from users where id = ?', [iduser], one=True)
    user['groups'] = query_db('select groups.* from groups join user_group on groups.id = user_group.id_group where id_user = ?', [iduser])
    if user is None:
        abort(404)
    if request.method == 'POST':
        if query_db('select * from users where email=? and id!=?', [request.form['email'], iduser], one=True) is None:
            if query_db('select * from users where name=? and id!=?', [request.form['name'], iduser], one=True) is None:
                admin = 0
                if 'admin' in request.form.keys():
                    admin = 1
                g.db.execute('update users set email = ?, name = ?, organization = ?, openid= ?, is_admin = ? where id = ?',
                        [request.form['email'], request.form['name'], request.form['organization'], request.form['openid'], admin, iduser])
                g.db.commit()
                groups = request.form.getlist('groups')
                groups.append('1')
                for group in user['groups']:
                    if not group['id'] in groups:
                        g.db.execute('delete from user_group where id_user = ? and id_group = ?', [iduser, group['id']])
                        g.db.commit()
                for group in groups:
                    group = query_db('select id from groups where id = ?', group, one=True)
                    if group is None:
                        flash(u'Le groupe portant l\'id %s n\'existe pas.' % group, 'warning')
                    else:
                        if not group in user['groups']:
                            g.db.execute('insert into user_group values (?, ?)', [user['id'], group['id']])
                            g.db.commit()
                user = query_db('select * from users where id = ?', [iduser], one=True)
                user['groups'] = query_db('select groups.* from groups join user_group on groups.id = user_group.id_group where id_user = ?', [iduser])
                flash(u'Le profil a été mis à jour !', 'success')
            else:
                flash(u'Le nom ' + request.form['name'] + u' est déjà pris ! Veuillez en choisir un autre.', 'error')
        else:
            flash(u'Il existe déjà un compte pour cette adresse e-mail : ' + request.form['email'], 'error')
    groups = query_db('select * from groups where system=0') 
    return render_template('admin_user_edit.html', user=user, groups=groups)

@app.route('/admin/users/delete/<iduser>')
def admin_user_del(iduser):
    if not session.get('user').get('is_admin'):
        abort(401)
    user = query_db('select * from users where id = ?', [iduser], one=True)
    if user is None:
        abort(404)
    g.db.execute('delete from users where id = ?', [iduser])
    g.db.commit()
    return redirect(url_for('admin_users'))

#-------------
# Roles admin

@app.route('/admin/groups')
def admin_groups():
    if not session.get('user').get('is_admin'):
        abort(401)
    groups = query_db('select groups.*, count(user_group.id_user) as nb_users from (select groups.*, count(votes.id) as nb_votes from groups left join votes on votes.id_group = groups.id group by groups.id) as groups left join user_group on user_group.id_group = groups.id group by groups.id')
    return render_template('admin_groups.html', groups=groups)

@app.route('/admin/groups/add', methods=['POST'])
def admin_group_add():
    if not session.get('user').get('is_admin'):
        abort(401)
    if request.method == 'POST':
        if request.form['name']:
            g.db.execute('insert into groups (name) values (?)', [request.form['name']])
            g.db.commit()
        else:
            flash(u"Vous devez spécifier un nom.", "error")
    return redirect(url_for('admin_groups'))

@app.route('/admin/groups/delete/<idgroup>')
def admin_group_del(idgroup):
    if not session.get('user').get('is_admin'):
        abort(401)
    group = query_db('select * from groups where id = ?', [idgroup], one=True)
    if group is None:
        abort(404)
    if group['system']:
        abort(401)
    g.db.execute('delete from groups where id = ?', [idgroup])
    g.db.commit()
    return redirect(url_for('admin_groups'))

#------------
# Votes list

@app.route('/votes/<votes>')
def votes(votes):
    today = date.today()
    active_button = votes
    max_votes ='select id_group, count(*) as max_votes from user_group group by id_group'
    basequery = 'select votes.*, max_votes from votes left join (' + max_votes + ') as max_votes on votes.id_group = max_votes.id_group'
    nb_votes = 'select id_vote, count(*) as nb_votes from (select id_user, id_vote from user_choice join choices on id_choice = choices.id group by id_user, id_vote) group by id_vote'
    basequery = 'select * from (' + basequery + ') left join (' + nb_votes + ') on id = id_vote'
    basequery = 'select *, votes.id as voteid, groups.name as groupname from (' + basequery + ') as votes join groups on groups.id = id_group where is_open=1 and is_hidden=0'
    if votes == 'all':
        votes = query_db(basequery + ' order by date_end')
    elif votes == 'archive':
        votes = query_db(basequery + ' and is_terminated=1 order by date_end desc')
    elif votes == 'current':
        votes = query_db(basequery + ' and is_terminated=0 order by date_end')
    elif votes == 'waiting':
        basequery = 'select votes.* from user_group join (' + basequery + ') as votes on votes.id_group = user_group.id_group where user_group.id_user = ?'
        already_voted = 'select id_vote from user_choice join choices on user_choice.id_choice = choices.id where id_user = ?'
        votes = query_db(basequery + ' and votes.id not in (' + already_voted + ') and is_terminated=0', [get_userid(), get_userid()])
    else:
        abort(404)
    for vote in votes:
        if not vote.get('nb_votes'):
            vote['nb_votes'] = 0 
        if vote.get('max_votes'):
            vote['percent'] = int((float(vote['nb_votes']) / float(vote['max_votes'])) * 100)
    return render_template('votes.html', votes=votes, active_button=active_button)

#------
# Vote

def can_see_vote(idvote, iduser=-1):
    vote = query_db('select * from votes where id=?', [idvote], one=True)
    if vote is None:
        return False
    if not vote['is_public']:
        user = query_db('select * from users where id=?', [iduser], one=True)
        if query_db('select * from user_group where id_user = ? and id_group = ?', [iduser, vote['id']], one=True) is None:
            return False
    return True

def can_vote(idvote, iduser=-1):
    vote = query_db('select * from votes where id=?', [idvote], one=True)
    if vote is None:
        return False
    if vote['is_terminated'] == 0:
        if iduser > 0: 
            if can_see_vote(idvote, iduser): 
                if not has_voted(idvote, iduser):
                    if query_db('select * from user_group where id_user = ? and id_group = ?', [iduser, vote['id_group']], one=True):
                        return True
    return False

def has_voted(idvote, iduser=-1):
    vote = query_db('select * from user_choice join choices on id_choice=choices.id where id_vote = ? and id_user = ?', [idvote, iduser], one=True)
    return (vote is not None)

@app.route('/vote/<idvote>', methods=['GET', 'POST'])
def vote(idvote):
    vote = query_db('select votes.*, groups.name as groupname, users.name as author from votes join groups on groups.id=votes.id_group join users on users.id=votes.id_author where votes.id=?', [idvote], one=True)
    if vote is None:
        abort(404)
    if can_see_vote(idvote, get_userid()):
        if request.method == 'POST':
            if can_vote(idvote, get_userid()):
                if vote['is_multiplechoice'] == 0:
                    if query_db('select * from choices where id = ?', [request.form['choice']], one=True) is not None:
                        g.db.execute('insert into user_choice (id_user, id_choice) values (?, ?)', 
                                [session.get('user').get('id'), request.form['choice']])
                        g.db.commit()
                else:
                    choices = query_db('select name, id from choices where id_vote=?', [idvote])
                    for choice in choices:
                        if str(choice['id']) in request.form.keys():
                            g.db.execute('insert into user_choice (id_user, id_choice) values (?, ?)', 
                                    [session.get('user').get('id'), choice['id']])
                            g.db.commit()
            else:
                abort(401)
        tuples = query_db('select choiceid, choicename, users.id as userid, users.name as username from (select choices.id as choiceid, choices.name as choicename, id_user as userid from choices join user_choice on choices.id = user_choice.id_choice where id_vote = ?) join users on userid = users.id', [idvote])
        users = dict()
        for t in tuples:
            if t['userid'] in users:
                users[t['userid']]['choices'].append(t['choiceid'])
            else:
                users[t['userid']] = dict()
                users[t['userid']]['userid'] = t['userid']
                users[t['userid']]['username'] = t['username']
                users[t['userid']]['choices'] = [t['choiceid']]
        choices = query_db('select choices.name, choices.id, choices.name, choices.id_vote, count(id_choice) as nb from choices left join user_choice on id_choice = choices.id where id_vote = ? group by id_choice, name, id_vote order by id', [idvote])
        attachments = query_db('select * from attachments where id_vote=?', [idvote])
        tmp = query_db('select id_group, count(*) as nb from user_group where id_group = ? group by id_group', [vote['id_group']], one=True)
        if tmp is None:
            vote['percent'] = 0
        else:
            vote['max_votes'] = tmp['nb']
            tmp = query_db('select id_vote, count(*) as nb from (select id_user, id_vote from user_choice join choices on id_choice = choices.id group by id_user, id_vote) where id_vote = ? group by id_vote', [idvote], one=True)
            if tmp is None:
                vote['percent'] = 0
                vote['nb_votes'] = 0
            else:
                vote['nb_votes'] = tmp['nb']
                vote['percent'] = int((float(vote['nb_votes']) / float(vote['max_votes'])) * 100)
        if query_db('select * from user_group where id_group = ? and id_user = ?', [vote['id_group'], get_userid()], one=True) and not vote['is_terminated']:
            flash(u'Ce vote vous concerne !', 'info')
        return render_template('vote.html', vote=vote, attachments=attachments, choices=choices, users=users.values(), can_vote=can_vote(idvote, get_userid()))
    flash(u'Vous n\'avez pas le droit de voir ce vote, désolé.')
    return redirect(url_for('home'))

@app.route('/vote/deletechoices/<idvote>/<iduser>')
def vote_deletechoices(idvote, iduser):
    if int(iduser) != get_userid():
        abort(401)
    g.db.execute('delete from user_choice where id_user = ? and id_choice in (select id from choices where id_vote = ?)',
        [iduser, idvote])
    g.db.commit()
    return redirect(url_for('vote', idvote=idvote))

#-------------
# Votes admin

@app.route('/admin/votes/list')
def admin_votes():
    if not session.get('user').get('is_admin'):
        abort(401)
    votes = query_db('select *, votes.id as voteid, groups.name as groupname from votes join groups on groups.id=votes.id_group where is_hidden=0 order by id desc')
    return render_template('admin_votes.html', votes=votes, today=date.today().strftime("%Y-%m-%d"))

@app.route('/admin/votes/add', methods=['GET', 'POST'])
def admin_vote_add():
    if not session.get('user').get('is_admin'):
        abort(401)
    if request.method == 'POST':
        if request.form['title']:
            if query_db('select * from votes where title = ?', [request.form['title']], one=True) is None:
                date_begin = date.today()
                date_end = date.today() + timedelta(days=int(request.form['days']))
                transparent = 0
                public = 0
                multiplechoice = 0
                if 'transparent' in request.form.keys():
                    transparent = 1
                if 'public' in request.form.keys():
                    public = 1
                if 'multiplechoice' in request.form.keys():
                    multiplechoice = 1
                group = query_db('select id from groups where name = ?', [request.form['group']], one=True)
                if group is None:
                    group[id] = 1
                g.db.execute('insert into votes (title, description, category, date_begin, date_end, is_transparent, is_public, is_multiplechoice, id_group, id_author) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
                        [request.form['title'], request.form['description'], request.form['category'], date_begin, date_end, transparent, public, multiplechoice, group['id'], session['user']['id']])
                g.db.commit()
                vote = query_db('select * from votes where title = ? and date_begin = ? order by id desc', 
                        [request.form['title'], date_begin], one=True)
                if vote is None:
                    flash(u'Une erreur est survenue !', 'error')
                    return redirect(url_for('home'))
                else:
                    if request.form['pattern'] in PATTERNS.keys():
                        pattern = PATTERNS[request.form['pattern']]
                        for choice in pattern:
                            g.db.execute('insert into choices (name, id_vote) values (?, ?)', [choice, vote['id']])
                            g.db.commit()
                    flash(u"Le vote a été créé", 'info')
                    return redirect(url_for('admin_vote_edit', voteid=vote['id']))
            else:
                flash(u'Le titre que vous avez choisi est déjà pris.', 'error')
        else:
            flash(u'Vous devez spécifier un titre.', 'error')
    groups = query_db('select * from groups') 
    return render_template('admin_vote_new.html', groups=groups, patterns=PATTERNS)

@app.route('/admin/votes/edit/<voteid>', methods=['GET', 'POST'])
def admin_vote_edit(voteid):
    if not session.get('user').get('is_admin'):
        abort(401)
    vote = query_db('select * from votes where id = ?', [voteid], one=True)
    if vote is None:
        abort(404)
    if request.method == 'POST':
        if request.form['title']:
            if request.form['days'] > 0:
                date_end = datetime.strptime(vote['date_begin'], "%Y-%m-%d") + timedelta(days=int(request.form['days']))
                date_end = date_end.strftime("%Y-%m-%d")
            transparent = 0
            public = 0
            if 'transparent' in request.form.keys():
                transparent = 1
            if 'public' in request.form.keys():
                public = 1
            isopen = 0
            isterminated = 0
            if request.form['status'] == 'Ouvert':
                choices = query_db('select id_vote, count(*) as nb from choices where id_vote = ? group by id_vote', [voteid], one=True)
                if choices is not None and choices['nb'] >= 2:
                    isopen = 1
                    previousvote = query_db('select id, is_open, id_group from votes where id = ?', [voteid], one=True)
                    if previousvote is None or previousvote['is_open'] == 0:
                        users_to_vote = query_db('select users.email, users.name from users join user_group on users.id=user_group.id_user where user_group.id_group = ?', [previousvote['id_group']])
                        for user in users_to_vote:
                            link = request.url_root + url_for('vote', idvote=voteid)
                            BODY = string.join((
                                "From: %s" % EMAIL,
                                "To: %s" % user['email'],
                                "Subject: [Cavote] %s" % gettext(u"A vote has been opened for your group"),
                                "Date: %s" % time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime()).decode('utf-8'),
                                "X-Mailer: %s" % VERSION,
                                "",
                                "%(text)s %(title)s" % {"text": gettext(u"A vote has been opened and you are in a group concerned by it :"), "title": request.form['title']},
                                "",
                                gettext(u"This link will bring you to the form where you will be able to vote :"),
                                link,
                                "",
                                gettext(u"If you think this mail is not for you, please ignore and delete it.")
                                ), "\r\n")
                            server = smtplib.SMTP(SMTP_SERVER)
                            server.sendmail(EMAIL, [user['email']], BODY.encode('utf-8'))
                            server.quit()
                else:
                    flash(u'Vous devez proposer au moins deux choix pour ouvrir le vote.', 'error')
            elif request.form['status'] == u'Terminé':
                isterminated = 1
                if vote['is_open']:
                    isopen = 1
            g.db.execute('update votes set title = ?, description = ?, category = ?, is_transparent = ?, is_public = ?, is_open = ?, is_terminated = ?, date_end = ?, reminder_last_days = ? where id = ?', [request.form['title'], request.form['description'], request.form['category'], transparent, public, isopen, isterminated, date_end, request.form['reminder'], voteid])
            g.db.commit()
            vote = query_db('select * from votes where id = ?', [voteid], one=True)
            flash(u"Le vote a bien été mis à jour.", "success")
        else:
            flash(u'Vous devez spécifier un titre.', 'error')
    vote['duration'] = (datetime.strptime(vote['date_end'], "%Y-%m-%d") - datetime.strptime(vote['date_begin'], "%Y-%m-%d")).days
    group = query_db('select name from groups where id = ?', [vote['id_group']], one=True) 
    choices = query_db('select * from choices where id_vote = ?', [voteid])
    attachments = query_db('select * from attachments where id_vote = ?', [voteid])
    if date.today().strftime("%Y-%m-%d") > vote['date_end']:
        flash(u'La deadline du vote est expirée, vous devriez terminer le vote.')
    return render_template('admin_vote_edit.html', vote=vote, group=group, choices=choices, attachments=attachments)

@app.route('/admin/votes/delete/<idvote>')
def admin_vote_del(idvote):
    if not session.get('user').get('is_admin'):
        abort(401)
    vote = query_db('select * from votes where id = ?', [idvote], one=True)
    if vote is None:
        abort(404)
    g.db.execute('update votes set is_hidden=1 where id = ?', [idvote])
    g.db.commit()
    return redirect(url_for('admin_votes'))

@app.route('/admin/votes/addchoice/<voteid>', methods=['POST'])
def admin_vote_addchoice(voteid):
    if not session.get('user').get('is_admin'):
        abort(401)
    vote = query_db('select * from votes where id = ?', [voteid], one=True)
    if vote is None:
        abort(404)
    g.db.execute('insert into choices (name, id_vote) values (?, ?)', [request.form['title'], voteid])
    g.db.commit()
    return redirect(url_for('admin_vote_edit', voteid=voteid))

@app.route('/admin/votes/editchoice/<voteid>/<choiceid>', methods=['POST', 'DELETE'])
def admin_vote_editchoice(voteid, choiceid):
    if not session.get('user').get('is_admin'):
        abort(401)
    choice = query_db('select * from choices where id = ? and id_vote = ?', [choiceid, voteid], one=True)
    if choice is None:
        abort(404)
    if request.method == 'POST':
        g.db.execute('update choices set name=? where id = ? and id_vote = ?', [request.form['title'], choiceid, voteid])
        g.db.commit()
    return redirect(url_for('admin_vote_edit', voteid=voteid))

@app.route('/admin/votes/deletechoice/<voteid>/<choiceid>')
def admin_vote_deletechoice(voteid, choiceid):
    if not session.get('user').get('is_admin'):
        abort(401)
    choice = query_db('select * from choices where id = ? and id_vote = ?', [choiceid, voteid], one=True)
    if choice is None:
        abort(404)
    g.db.execute('delete from choices where id = ? and id_vote = ?', [choiceid, voteid])
    g.db.commit()
    choices = query_db('select id_vote, count(*) as nb from choices where id_vote = ? group by id_vote', [voteid], one=True)
    if choices is None or choices['nb'] < 2:
        g.db.execute('update votes set is_open=0 where id = ?', [voteid])
        g.db.commit()
        flash(u'Attention ! Il y a moins de deux choix. Le vote a été fermé.', 'error')
    return redirect(url_for('admin_vote_edit', voteid=voteid))

@app.route('/admin/votes/addattachment/<voteid>', methods=['POST'])
def admin_vote_addattachment(voteid):
    if not session.get('user').get('is_admin'):
        abort(401)
    vote = query_db('select * from votes where id = ?', [voteid], one=True)
    if vote is None:
        abort(404)
    g.db.execute('insert into attachments (url, id_vote) values (?, ?)', [request.form['url'], voteid])
    g.db.commit()
    return redirect(url_for('admin_vote_edit', voteid=voteid))

@app.route('/admin/votes/deleteattachment/<voteid>/<attachmentid>')
def admin_vote_deleteattachment(voteid, attachmentid):
    if not session.get('user').get('is_admin'):
        abort(401)
    attachment = query_db('select * from attachments where id = ? and id_vote = ?', [attachmentid, voteid], one=True)
    if attachment is None:
        abort(404)
    g.db.execute('delete from attachments where id = ? and id_vote = ?', [attachmentid, voteid])
    g.db.commit()
    return redirect(url_for('admin_vote_edit', voteid=voteid))

#------
# Main

if __name__ == '__main__':
    app.run()