# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4

###############################################################################
# ScribeEngine - Open Source Blog Software                                    #
# --------------------------------------------------------------------------- #
# Copyright (c) 2010 Raoul Snyman                                             #
# --------------------------------------------------------------------------- #
# This program is free software; you can redistribute it and/or modify it     #
# under the terms of the GNU General Public License as published by the Free  #
# Software Foundation; version 2 of the License.                              #
#                                                                             #
# This program is distributed in the hope that it will be useful, but WITHOUT #
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    #
# more details.                                                               #
#                                                                             #
# You should have received a copy of the GNU General Public License along     #
# with this program; if not, write to the Free Software Foundation, Inc., 59  #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
###############################################################################

import logging
import string
import random
from urlparse import urlsplit
from datetime import datetime

from formencode.validators import Int

from scribeengine.lib.base import *
from scribeengine.lib.validation.client import JSString, JSEmail
from scribeengine.lib.validation.server import UnicodeString, Email, FieldsMatch
from scribeengine.lib import utils
from scribeengine.model import User
from scribeengine.model.meta import Session

log = logging.getLogger(__name__)

class AccountController(BaseController):

    def index(self):
        h.redirect_to(h.url_for(controller=u'account', action=u'login'))

    def register(self):
        c.page_title = u'Register'
        return render(u'/account/register.mako')

    @jsvalidate(u'register-form')
    def register_jsschema(self):
        return {
            u'register-email': JSEmail(required=True, message=u'You haven\'t typed in an e-mail address.'),
            u'register-password': JSString(required=True, message=u'You haven\'t typed in a password.'),
            u'register-confirm': JSString(required=True, equalTo=u'#password', message=u'Your passwords don\'t match.')
        }

    def register_schema(self):
        return {
            'register-email': Email(not_empty=True, messages={'empty': u'You haven\'t typed in an e-mail address.'}),
            'register-password': UnicodeString(not_empty=True, messages={'empty': u'You haven\'t typed in a password.'}),
            'confirm-password': [FieldsMatch('register-password', 'register-confirm', messages={'invalid': u'Your passwords don\'t match.'})]
        }

    def register_POST(self):
        activation_code = u''.join(random.sample(string.letters + string.digits, 40))
        user = User(
            nick=c.form_values[u'register-nick'],
            email=c.form_values[u'register-email'],
            password=utils.hash_password(c.form_values[u'register-password']),
            activation_key=activation_code
        )
        Session.add(user)
        Session.commit()
        blog_mail = Session.query(Variable).get(u'blog mail')
        blog_title = Session.query(Variable).get(u'blog title')
        blog_host = Session.query(Variable).get(u'blog host')
        if not blog_host:
            url = u'%s://%s' % (request.environ[u'wsgi.url_scheme'],
                                request.environ[u'HTTP_HOST'])
            blog_host = Variable(key=u'blog host', value=url)
            Session.add(blog_host)
            Session.commit()
        utils.send_mail(u'/email/activate.mako', u'%s <%s>' % (user.nick, user.email),
            u'%s <%s>' % (blog_mail.value, blog_title.value),
            u'[%s] Activate your account!' % blog_title.value,
            {
                'user': user,
                'blog_title': blog_title.value,
                'blog_host': blog_host.value
            })
        h.flash.set_message(u'An e-mail has been sent to your e-mail address. '
            u'Please activate your account by clicking on the link in your '
            u'e-mail.', u'success')
        h.redirect_to('/')

    def activate(self, id=None):
        activation_code = request.GET.get('code')
        if not activation_code:
            h.flash.set_message(u'Your activation code was missing or '
                u'incorrect. Please check your activation e-mail.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'register'))
        if not id:
            h.flash.set_message(u'Your username was missing or incorrect. '
                u'Please check your activation e-mail.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'register'))
        user = Session.query(User)\
            .filter_by(id=id)\
            .filter_by(activation_key=activation_code)\
            .first()
        if not user:
            h.flash.set_message(u'Your username or activation code is '
                u'incorrect. Please check your activation e-mail.', u'error')
            h.redirect_to(h.url_for(action=u'register'))
        user.activation_key = None
        user.modified = datetime.now()
        Session.add(user)
        Session.commit()
        h.flash.set_message(u'Your account has been activated! Please log in '
            u'with your e-mail address and the password you typed in during '
            u'registration.', u'success')
        h.redirect_to(h.url_for(controller=u'account', action=u'login'))

    def reset(self):
        c.page_title = u'Reset Password'
        return render(u'/account/reset.mako')

    @jsvalidate(u'account-reset')
    def reset_jsschema(self):
        return {
            u'reset-email': JSEmail(required=True, message=u'You haven\'t typed in a valid e-mail address.')
        }

    def reset_schema(self):
        return {
            'reset-email': Email(not_empty=True, messages={'empty': u'You haven\'t typed in a valid e-mail address.'})
        }

    def reset_POST(self):
        email = c.form_values[u'reset-email']
        user = Session.query(User).filter_by(email=email).first()
        if not user:
            h.flash.set_message(u'Your e-mail address is not in the system.', u'error')
        else:
            activation_code = u''.join(random.sample(string.letters + string.digits, 40))
            user.activation_key = activation_code
            user.modified = datetime.now()
            Session.add(user)
            Session.commit()
            blog_mail = Session.query(Variable).get(u'blog mail')
            blog_title = Session.query(Variable).get(u'blog title')
            blog_host = Session.query(Variable).get(u'blog host')
            if not blog_host:
                url = u'%s://%s' % (request.environ[u'wsgi.url_scheme'],
                                    request.environ[u'HTTP_HOST'])
                blog_host = Variable(key=u'blog host', value=url)
                Session.add(blog_host)
                Session.commit()
            utils.send_mail(u'/email/reset.mako', u'%s <%s>' % (user.nick, user.email),
                u'%s <%s>' % (blog_mail.value, blog_title.value),
                u'[%s] Reset your password!' % blog_title.value,
                {
                    'user': user,
                    'blog_title': blog_title.value,
                    'blog_host': blog_host.value
                })
            h.flash.set_message(u'An e-mail has been sent to your e-mail address. '
                u'Please reset your password by clicking on the link in your '
                u'e-mail.', u'success')
        h.redirect_to('/account/login')

    def password(self, id=None):
        if not id or not request.GET.get(u'code'):
            h.flash.set_message(u'There was a problem with your activation code, please reset your password again.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))
        c.user = Session.query(User).get(id)
        if not c.user:
            h.flash.set_message(u'There was a problem with your account, please reset your password again.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))
        if c.user.activation_key != request.GET.get(u'code'):
            h.flash.set_message(u'There was a problem with your activation code, please reset your password again.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))
        c.page_title = u'Change Password'
        return render(u'/account/password.mako')

    @jsvalidate(u'account-password')
    def password_jsschema(self):
        return {
            u'password-password': JSString(required=True, message=u'You haven\'t typed in a password.'),
            u'password-confirm': JSString(required=True, equalTo=u'#password-password', message=u'Your passwords don\'t match.')
        }

    def password_schema(self):
        return {
            'password-password': UnicodeString(not_empty=True, messages={'empty': u'You haven\'t typed in a password.'}),
            'confirm-password': [FieldsMatch('password-password', 'password-confirm', messages={'invalid': u'Your passwords don\'t match.'})]
        }

    def password_POST(self, id=None):
        user = Session.query(User).get(id)
        if not user:
            h.flash.set_message(u'There was a problem with your account, please reset your password again.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))
        user.password = utils.hash_password(c.form_values[u'password-password'])
        user.activation_key = None
        user.modified = datetime.now()
        Session.add(user)
        Session.commit()
        h.flash.set_message(u'Successfully updated your password. Please login with your new password.', u'success')
        h.redirect_to('/account/login')

    def login(self):
        if u'redirect_url' not in session and u'REFERER' in request.headers:
            session[u'redirect_url'] = str(urlsplit(request.headers[u'REFERER']).path)
            session.save()
        c.page_title = u'Login'
        return render(u'/account/login.mako')

    @jsvalidate(u'account-login')
    def login_jsschema(self):
        return {
            u'login-email': JSEmail(required=True, message=u'You haven\'t typed in an e-mail address.'),
            u'login-password': JSString(required=True, message=u'You haven\'t typed in a password.')
        }

    def login_schema(self):
        return {
            'login-email': Email(not_empty=True, messages={'empty': u'You haven\'t typed in an e-mail address.'}),
            'login-password': UnicodeString(not_empty=True, messages={'empty': u'You haven\'t typed in a password.'})
        }

    def login_POST(self):
        log.debug('Logging in as "%s" with password "%s"', c.form_values[u'login-email'], c.form_values[u'login-password'])
        user = Session.query(User).filter_by(email=c.form_values[u'login-email']).first()
        password = utils.hash_password(c.form_values[u'login-password'])
        if not user or user.password != password:
            log.debug('Username or password are incorrect.')
            h.flash.set_message(u'Your username or password are incorrect.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))
        elif user and user.activation_key is not None:
            log.debug('Unactivated account.')
            h.flash.set_message(u'Your account has not yet been activated. Please check your e-mail for a link to activate your account.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))
        elif user and user.password == password:
            log.debug('Logged in successfully.')
            redirect_url = str(session.get(u'redirect_url', u'/'))
            if u'redirect_url' in session:
                del session[u'redirect_url']
            else:
                redirect_url = '/'
            if redirect_url == '/account/login':
                redirect_url = '/'
            session[u'REMOTE_USER'] = user.id
            session.save()
            h.flash.set_message(u'You have logged in successfully.', u'success')
            h.redirect_to(redirect_url)
        else:
            log.debug('"user" is None.')
            del session[u'REMOTE_USER']
            session.save()
            h.flash.set_message(u'There was a problem logging you in.', u'error')
            h.redirect_to(h.url_for(controller=u'account', action=u'login'))

    def logout(self):
        del session[u'REMOTE_USER']
        session.save()
        h.flash.set_message(u'You have logged out successfully.', u'success')
        h.redirect_to('/')