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

from flask import Flask, request, session, g, redirect, url_for, abort, \
    render_template, flash
import sqlite3
from datetime import date, timedelta
from contextlib import closing
import locale
locale.setlocale(locale.LC_ALL, '')

DATABASE = '/tmp/cavote.db'
SECRET_KEY = '{J@uRKO,xO-PK7B,jF?>iHbxLasF9s#zjOoy=+:'
DEBUG = True

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

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

@app.before_request
def before_request():
    g.db = connect_db()

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

@app.route('/')
def home():
    return render_template('index.html')

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(username, password):
    return query_db('select * from users where email = ? and password = ?', [username, password], one=True)

def connect_user(user):
    session['userid'] = user['id']
    session['username'] = user['name']
    session['email'] = user['email']
    session['organization'] = user['organization']
    if user['is_admin'] == 1:
        session['is_admin'] = True

def disconnect_user():
    session.pop('username', None)
    session.pop('is_admin', None)

@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        user = valid_login(request.form['username'], request.form['password'])
        if user is None:
            flash('Invalid username/password', 'error')
        else:
            connect_user(user)
            flash('You were logged in', 'success')
            return redirect(url_for('home'))
    return render_template('login.html')

@app.route('/logout')
def logout():
    disconnect_user()
    flash('You were logged out', 'info')
    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:
            # :TODO:maethor:120528: Générer la clé, la mettre dans la base de données et envoyer le mail
            flash(u"Un mail a été envoyé à " + user['email'], 'info')
    return render_template('password_lost.html')

@app.route('/login/<username>/<key>')
def login_key(username, key):
    user = query_db('select * from users where email = ? and key = ?', [username, key], one=True)
    if user is None:
        abort(404)
    else:
        connect_user(user)
        # :TODO:maethor:120528: Remplacer la clé pour qu'elle ne puisse plus être utilisée
        return redirect(url_for('home'))

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

@app.route('/user/settings/<username>')
def show_user(username):
    if username != session.get('username'):
        abort(401)
    return render_template('user_settings.html')

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


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

@app.route('/votes/<votes>')
def show_votes(votes):
    today = date.today()
    if votes == 'all':
        votes = query_db('select title, description, date_begin, date_end from votes order by id desc')
    elif votes == 'archive':
        votes = query_db('select title, description, date_begin, date_end from votes where date_end < (?) order by id desc', [today])
    elif votes == 'current':
        votes = query_db('select title, description, date_begin, date_end from votes where date_end >= (?) order by id desc', [today])
    else:
        abort(404)
    return render_template('show_votes.html', votes=votes)

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

@app.route('/votes/admin/new')
def new_vote():
    if not session.get('is_admin'):
        abort(401)
    return render_template('new_vote.html')

@app.route('/votes/admin/add', methods=['POST'])
def add_vote():
    if not session.get('is_admin'):
        abort(401)
    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
    g.db.execute('insert into votes (title, description, date_begin, date_end, is_transparent, is_public, is_multiplechoice) values (?, ?, ?, ?, ?, ?, ?)',
            [request.form['title'], request.form['description'], date_begin, date_end, transparent, public, multiplechoice])
    g.db.commit()
    flash('New entry was successfully posted', 'info')
    return redirect(url_for('home'))

#------
# Main

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