# -*- coding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2012-today OpenERP SA (<http://www.openerp.com>)
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version
#
#    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 Affero General Public License for more details
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>
#
##############################################################################
import logging
import werkzeug

import openerp
from openerp.addons.auth_signup.res_users import SignupError
from openerp.addons.web.controllers.main import ensure_db
from openerp import http
from openerp.http import request
from openerp.tools.translate import _

_logger = logging.getLogger(__name__)

class AuthSignupHome(openerp.addons.web.controllers.main.Home):

    @http.route()
    def web_login(self, *args, **kw):
        ensure_db()
        response = super(AuthSignupHome, self).web_login(*args, **kw)
        response.qcontext.update(self.get_auth_signup_config())
        if request.httprequest.method == 'GET' and request.session.uid and request.params.get('redirect'):
            # Redirect if already logged in and redirect param is present
            return http.redirect_with_hash(request.params.get('redirect'))
        return response

    @http.route('/web/signup', type='http', auth='public', website=True)
    def web_auth_signup(self, *args, **kw):
        qcontext = self.get_auth_signup_qcontext()

        if not qcontext.get('token') and not qcontext.get('signup_enabled'):
            raise werkzeug.exceptions.NotFound()

        if 'error' not in qcontext and request.httprequest.method == 'POST':
            try:
                self.do_signup(qcontext)
                return super(AuthSignupHome, self).web_login(*args, **kw)
            except (SignupError, AssertionError), e:
                qcontext['error'] = _(e.message)

        return request.render('auth_signup.signup', qcontext)

    @http.route('/web/reset_password', type='http', auth='public', website=True)
    def web_auth_reset_password(self, *args, **kw):
        qcontext = self.get_auth_signup_qcontext()

        if not qcontext.get('token') and not qcontext.get('reset_password_enabled'):
            raise werkzeug.exceptions.NotFound()

        if 'error' not in qcontext and request.httprequest.method == 'POST':
            try:
                if qcontext.get('token'):
                    self.do_signup(qcontext)
                    return super(AuthSignupHome, self).web_login(*args, **kw)
                else:
                    login = qcontext.get('login')
                    assert login, "No login provided."
                    res_users = request.registry.get('res.users')
                    res_users.reset_password(request.cr, openerp.SUPERUSER_ID, login)
                    qcontext['message'] = _("An email has been sent with credentials to reset your password")
            except SignupError:
                qcontext['error'] = _("Could not reset your password")
                _logger.exception('error when resetting password')
            except Exception, e:
                qcontext['error'] = _(e.message)


        return request.render('auth_signup.reset_password', qcontext)

    def get_auth_signup_config(self):
        """retrieve the module config (which features are enabled) for the login page"""

        icp = request.registry.get('ir.config_parameter')
        return {
            'signup_enabled': icp.get_param(request.cr, openerp.SUPERUSER_ID, 'auth_signup.allow_uninvited') == 'True',
            'reset_password_enabled': icp.get_param(request.cr, openerp.SUPERUSER_ID, 'auth_signup.reset_password') == 'True',
        }

    def get_auth_signup_qcontext(self):
        """ Shared helper returning the rendering context for signup and reset password """
        qcontext = request.params.copy()
        qcontext.update(self.get_auth_signup_config())
        if qcontext.get('token'):
            try:
                # retrieve the user info (name, login or email) corresponding to a signup token
                res_partner = request.registry.get('res.partner')
                token_infos = res_partner.signup_retrieve_info(request.cr, openerp.SUPERUSER_ID, qcontext.get('token'))
                for k, v in token_infos.items():
                    qcontext.setdefault(k, v)
            except:
                qcontext['error'] = _("Invalid signup token")
        return qcontext

    def do_signup(self, qcontext):
        """ Shared helper that creates a res.partner out of a token """
        values = dict((key, qcontext.get(key)) for key in ('login', 'name', 'password'))
        assert any([k for k in values.values()]), "The form was not properly filled in."
        assert values.get('password') == qcontext.get('confirm_password'), "Passwords do not match; please retype them."
        self._signup_with_values(qcontext.get('token'), values)
        request.cr.commit()

    def _signup_with_values(self, token, values):
        db, login, password = request.registry['res.users'].signup(request.cr, openerp.SUPERUSER_ID, values, token)
        request.cr.commit()     # as authenticate will use its own cursor we need to commit the current transaction
        uid = request.session.authenticate(db, login, password)
        if not uid:
            raise SignupError(_('Authentification Failed.'))

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