# -*- coding: utf-8 -*-

"""

    rhodecode.model.user

    ~~~~~~~~~~~~~~~~~~~~

    users model for RhodeCode

    :created_on: Apr 9, 2010

    :author: marcink

    :copyright: (C) 2009-2011 Marcin Kuzminski <marcin@python-works.com>

    :license: GPLv3, see COPYING for more details.

"""

# 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, 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 General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import logging

import traceback

from pylons.i18n.translation import _

from rhodecode.model import BaseModel

from rhodecode.model.caching_query import FromCache

from rhodecode.model.db import User, RepoToPerm, Repository, Permission, \

    UserToPerm, UsersGroupRepoToPerm, UsersGroupToPerm, UsersGroupMember

from rhodecode.lib.exceptions import DefaultUserException, \

    UserOwnsReposException

from sqlalchemy.exc import DatabaseError

from rhodecode.lib import generate_api_key

from sqlalchemy.orm import joinedload

log = logging.getLogger(__name__)

PERM_WEIGHTS = {'repository.none': 0,

                'repository.read': 1,

                'repository.write': 3,

                'repository.admin': 3}

class UserModel(BaseModel):

    def get(self, user_id, cache=False):

        user = self.sa.query(User)

        if cache:

            user = user.options(FromCache("sql_cache_short",

                                          "get_user_%s" % user_id))

        return user.get(user_id)

    def get_by_username(self, username, cache=False, case_insensitive=False):

        if case_insensitive:

            user = self.sa.query(User).filter(User.username.ilike(username))

        else:

            user = self.sa.query(User)\

                .filter(User.username == username)

        if cache:

            user = user.options(FromCache("sql_cache_short",

                                          "get_user_%s" % username))

        return user.scalar()

    def get_by_api_key(self, api_key, cache=False):

        user = self.sa.query(User)\

                .filter(User.api_key == api_key)

        if cache:

            user = user.options(FromCache("sql_cache_short",

                                          "get_user_%s" % api_key))

        return user.scalar()

    def create(self, form_data):

        try:

            new_user = User()

            for k, v in form_data.items():

                setattr(new_user, k, v)

            new_user.api_key = generate_api_key(form_data['username'])

            self.sa.add(new_user)

            self.sa.commit()

        except:

            log.error(traceback.format_exc())

            self.sa.rollback()

            raise

    def create_ldap(self, username, password, user_dn, attrs):

        """

        Checks if user is in database, if not creates this user marked

        as ldap user

        :param username:

        :param password:

        :param user_dn:

        :param attrs:

        """

        from rhodecode.lib.auth import get_crypt_password

        log.debug('Checking for such ldap account in RhodeCode database')

        if self.get_by_username(username, case_insensitive=True) is None:

            try:

                new_user = User()

                # add ldap account always lowercase

                new_user.username = username.lower()

                new_user.password = get_crypt_password(password)

                new_user.api_key = generate_api_key(username)

                new_user.email = attrs['email']

                new_user.active = True

                new_user.name = attrs['name']

                new_user.lastname = attrs['lastname']

                self.sa.add(new_user)

                self.sa.commit()

                return True

            except (DatabaseError,):

                log.error(traceback.format_exc())

                self.sa.rollback()

                raise

        log.debug('this %s user exists skipping creation of ldap account',

                  username)

        return False

    def create_registration(self, form_data):

        from rhodecode.lib.celerylib import tasks, run_task

        try:

            new_user = User()

            for k, v in form_data.items():

                if k != 'admin':

                    setattr(new_user, k, v)

            self.sa.add(new_user)

            self.sa.commit()

            body = ('New user registration\n'

                    'username: %s\n'

                    'email: %s\n')

            body = body % (form_data['username'], form_data['email'])

            run_task(tasks.send_email, None,

                     _('[RhodeCode] New User registration'),

                     body)

        except:

            log.error(traceback.format_exc())

            self.sa.rollback()

            raise

    def update(self, user_id, form_data):

        try:

            user = self.get(user_id, cache=False)

            if user.username == 'default':

                raise DefaultUserException(

                                _("You can't Edit this user since it's"

                                  " crucial for entire application"))

            for k, v in form_data.items():

                if k == 'new_password' and v != '':

                    user.password = v