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

# 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/>.

"""

kallithea.controllers.admin.repo_groups

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

Repository groups controller for Kallithea

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Mar 23, 2010

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import logging

import traceback

import formencode

import itertools

from formencode import htmlfill

from pylons import request, tmpl_context as c, url

from pylons.controllers.util import abort, redirect

from pylons.i18n.translation import _, ungettext

import kallithea

from kallithea.lib import helpers as h

from kallithea.lib.compat import json

from kallithea.lib.auth import LoginRequired, \

    HasRepoGroupPermissionAnyDecorator, HasRepoGroupPermissionAll, \

    HasPermissionAll

from kallithea.lib.base import BaseController, render

from kallithea.model.db import RepoGroup, Repository

from kallithea.model.scm import RepoGroupList, AvailableRepoGroupChoices

from kallithea.model.repo_group import RepoGroupModel

from kallithea.model.forms import RepoGroupForm, RepoGroupPermsForm

from kallithea.model.meta import Session

from kallithea.model.repo import RepoModel

from webob.exc import HTTPInternalServerError, HTTPNotFound

from kallithea.lib.utils2 import safe_int

from sqlalchemy.sql.expression import func

log = logging.getLogger(__name__)

class RepoGroupsController(BaseController):

    @LoginRequired()

    def __before__(self):

        super(RepoGroupsController, self).__before__()

    def __load_defaults(self, extras=(), exclude=()):

        """extras is used for keeping current parent ignoring permissions

        exclude is used for not moving group to itself TODO: also exclude descendants

        Note: only admin can create top level groups

        """

        repo_groups = AvailableRepoGroupChoices([], ['group.admin'], extras)

        exclude_group_ids = set(rg.group_id for rg in exclude)

        c.repo_groups = [rg for rg in repo_groups

                         if rg[0] not in exclude_group_ids]

        repo_model = RepoModel()

        c.users_array = repo_model.get_users_js()

        c.user_groups_array = repo_model.get_user_groups_js()

    def __load_data(self, group_id):

        """

        Load defaults settings for edit, and update

        :param group_id:

        """

        repo_group = RepoGroup.get_or_404(group_id)

        data = repo_group.get_dict()

        data['group_name'] = repo_group.name

        # fill repository group users

        for p in repo_group.repo_group_to_perm:

            data.update({'u_perm_%s' % p.user.username:

                             p.permission.permission_name})

        # fill repository group groups

        for p in repo_group.users_group_to_perm:

            data.update({'g_perm_%s' % p.users_group.users_group_name:

                             p.permission.permission_name})

        return data

    def _revoke_perms_on_yourself(self, form_result):

        _up = filter(lambda u: c.authuser.username == u[0],

                     form_result['perms_updates'])

        _new = filter(lambda u: c.authuser.username == u[0],

                      form_result['perms_new'])

        if _new and _new[0][1] != 'group.admin' or _up and _up[0][1] != 'group.admin':

            return True

        return False

    def index(self, format='html'):

        """GET /repo_groups: All items in the collection"""

        # url('repos_groups')

        _list = RepoGroup.query()\

                    .order_by(func.lower(RepoGroup.group_name))\

                    .all()

        group_iter = RepoGroupList(_list, perm_set=['group.admin'])

        repo_groups_data = []

        total_records = len(group_iter)

        _tmpl_lookup = kallithea.CONFIG['pylons.app_globals'].mako_lookup

        template = _tmpl_lookup.get_template('data_table/_dt_elements.html')

        repo_group_name = lambda repo_group_name, children_groups: (

            template.get_def("repo_group_name")

            .render(repo_group_name, children_groups, _=_, h=h, c=c)

        )

        repo_group_actions = lambda repo_group_id, repo_group_name, gr_count: (

            template.get_def("repo_group_actions")

            .render(repo_group_id, repo_group_name, gr_count, _=_, h=h, c=c,

                    ungettext=ungettext)

        )

        for repo_gr in group_iter:

            children_groups = map(h.safe_unicode,

                itertools.chain((g.name for g in repo_gr.parents),

                                (x.name for x in [repo_gr])))

            repo_count = repo_gr.repositories.count()

            repo_groups_data.append({

                "raw_name": repo_gr.group_name,

                "group_name": repo_group_name(repo_gr.group_name, children_groups),

                "desc": h.escape(repo_gr.group_description),

                "repos": repo_count,

                "owner": h.person(repo_gr.user),

                "action": repo_group_actions(repo_gr.group_id, repo_gr.group_name,

                                             repo_count)

            })

        c.data = json.dumps({

            "totalRecords": total_records,

            "startIndex": 0,

            "sort": None,

            "dir": "asc",

            "records": repo_groups_data

        })

        return render('admin/repo_groups/repo_groups.html')

    def create(self):

        """POST /repo_groups: Create a new item"""

        # url('repos_groups')

        self.__load_defaults()

        # permissions for can create group based on parent_id are checked

        # here in the Form

        repo_group_form = RepoGroupForm(repo_groups=c.repo_groups)

        try:

            form_result = repo_group_form.to_python(dict(request.POST))

            gr = RepoGroupModel().create(

                group_name=form_result['group_name'],

                group_description=form_result['group_description'],

                parent=form_result['group_parent_id'],

                owner=self.authuser.user_id, # TODO: make editable

                copy_permissions=form_result['group_copy_permissions']

            )

            Session().commit()

            #TODO: in futureaction_logger(, '', '', '', self.sa)

        except formencode.Invalid as errors:

            return htmlfill.render(

                render('admin/repo_groups/repo_group_add.html'),

                defaults=errors.value,

                errors=errors.error_dict or {},

                prefix_error=False,

                encoding="UTF-8",

                force_defaults=False)

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('Error occurred during creation of repository group %s') \

                    % request.POST.get('group_name'), category='error')

            parent_group_id = form_result['group_parent_id']

            #TODO: maybe we should get back to the main view, not the admin one

            return redirect(url('repos_groups', parent_group=parent_group_id))

        h.flash(_('Created repository group %s') % gr.group_name,

                category='success')

        return redirect(url('repos_group_home', group_name=gr.group_name))

    def new(self):

        """GET /repo_groups/new: Form to create a new item"""

        # url('new_repos_group')

        if HasPermissionAll('hg.admin')('group create'):

            #we're global admin, we're ok and we can create TOP level groups

            pass

        else:

            # we pass in parent group into creation form, thus we know

            # what would be the group, we can check perms here !

            group_id = safe_int(request.GET.get('parent_group'))

            group = RepoGroup.get(group_id) if group_id else None

            group_name = group.group_name if group else None

            if HasRepoGroupPermissionAll('group.admin')(group_name, 'group create'):

                pass

            else:

                return abort(403)

        self.__load_defaults()

        return render('admin/repo_groups/repo_group_add.html')

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def update(self, group_name):

        """PUT /repo_groups/group_name: Update an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="PUT" />

        # Or using helpers:

        #    h.form(url('repos_group', group_name=GROUP_NAME),

        #           method='put')

        # url('repos_group', group_name=GROUP_NAME)

        c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        self.__load_defaults(extras=[c.repo_group.parent_group],

                             exclude=[c.repo_group])

        # TODO: kill allow_empty_group - it is only used for redundant form validation!

        if HasPermissionAll('hg.admin')('group edit'):

            #we're global admin, we're ok and we can create TOP level groups

            allow_empty_group = True

        elif not c.repo_group.parent_group:

            allow_empty_group = True

        else:

            allow_empty_group = False

        repo_group_form = RepoGroupForm(

            edit=True,

            old_data=c.repo_group.get_dict(),

            repo_groups=c.repo_groups,

            can_create_in_root=allow_empty_group,

        )()

        try:

            form_result = repo_group_form.to_python(dict(request.POST))

            new_gr = RepoGroupModel().update(group_name, form_result)

            Session().commit()

            h.flash(_('Updated repository group %s') \

                    % form_result['group_name'], category='success')

            # we now have new name !

            group_name = new_gr.group_name

            #TODO: in future action_logger(, '', '', '', self.sa)

        except formencode.Invalid as errors:

            return htmlfill.render(

                render('admin/repo_groups/repo_group_edit.html'),

                defaults=errors.value,

                errors=errors.error_dict or {},

                prefix_error=False,

                encoding="UTF-8",

                force_defaults=False)

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('Error occurred during update of repository group %s') \

                    % request.POST.get('group_name'), category='error')

        return redirect(url('edit_repo_group', group_name=group_name))

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def delete(self, group_name):

        """DELETE /repo_groups/group_name: Delete an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="DELETE" />

        # Or using helpers:

        #    h.form(url('repos_group', group_name=GROUP_NAME),

        #           method='delete')

        # url('repos_group', group_name=GROUP_NAME)

        gr = c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        repos = gr.repositories.all()

        if repos:

            h.flash(_('This group contains %s repositories and cannot be '

                      'deleted') % len(repos), category='warning')

            return redirect(url('repos_groups'))

        children = gr.children.all()

        if children:

            h.flash(_('This group contains %s subgroups and cannot be deleted'

                      % (len(children))), category='warning')

            return redirect(url('repos_groups'))

        try:

            RepoGroupModel().delete(group_name)

            Session().commit()

            h.flash(_('Removed repository group %s') % group_name,

                    category='success')

            #TODO: in future action_logger(, '', '', '', self.sa)

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('Error occurred during deletion of repository group %s')

                    % group_name, category='error')

        if gr.parent_group:

            return redirect(url('repos_group_home', group_name=gr.parent_group.group_name))

        return redirect(url('repos_groups'))

    def show_by_name(self, group_name):

        """

        This is a proxy that does a lookup group_name -> id, and shows

        the group by id view instead

        """

        group_name = group_name.rstrip('/')

        id_ = RepoGroup.get_by_group_name(group_name)

        if id_:

            return self.show(group_name)

        raise HTTPNotFound

    @HasRepoGroupPermissionAnyDecorator('group.read', 'group.write',

                                         'group.admin')

    def show(self, group_name):

        """GET /repo_groups/group_name: Show a specific item"""

        # url('repos_group', group_name=GROUP_NAME)

        c.active = 'settings'

        c.group = c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        c.group_repos = c.group.repositories.all()

        #overwrite our cached list with current filter

        c.repo_cnt = 0

        groups = RepoGroup.query().order_by(RepoGroup.group_name)\

            .filter(RepoGroup.group_parent_id == c.group.group_id).all()

        c.groups = self.scm_model.get_repo_groups(groups)

        c.repos_list = Repository.query()\

                        .filter(Repository.group_id == c.group.group_id)\

                        .order_by(func.lower(Repository.repo_name))\

                        .all()

        repos_data = RepoModel().get_repos_as_dict(repos_list=c.repos_list,

                                                   admin=False)

        #json used to render the grid

        c.data = json.dumps(repos_data)

        return render('admin/repo_groups/repo_group_show.html')

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def edit(self, group_name):

        """GET /repo_groups/group_name/edit: Form to edit an existing item"""

        # url('edit_repo_group', group_name=GROUP_NAME)

        c.active = 'settings'

        c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        self.__load_defaults(extras=[c.repo_group.parent_group],

                             exclude=[c.repo_group])

        defaults = self.__load_data(c.repo_group.group_id)

        return htmlfill.render(

            render('admin/repo_groups/repo_group_edit.html'),

            defaults=defaults,

            encoding="UTF-8",

            force_defaults=False

        )

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def edit_repo_group_advanced(self, group_name):

        """GET /repo_groups/group_name/edit: Form to edit an existing item"""

        # url('edit_repo_group', group_name=GROUP_NAME)

        c.active = 'advanced'

        c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        return render('admin/repo_groups/repo_group_edit.html')

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def edit_repo_group_perms(self, group_name):

        """GET /repo_groups/group_name/edit: Form to edit an existing item"""

        # url('edit_repo_group', group_name=GROUP_NAME)

        c.active = 'perms'

        c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        self.__load_defaults()

        defaults = self.__load_data(c.repo_group.group_id)

        return htmlfill.render(

            render('admin/repo_groups/repo_group_edit.html'),

            defaults=defaults,

            encoding="UTF-8",

            force_defaults=False

        )

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def update_perms(self, group_name):

        """

        Update permissions for given repository group

        :param group_name:

        """

        c.repo_group = RepoGroupModel()._get_repo_group(group_name)

        valid_recursive_choices = ['none', 'repos', 'groups', 'all']

        form_result = RepoGroupPermsForm(valid_recursive_choices)().to_python(request.POST)

        if not c.authuser.is_admin:

            if self._revoke_perms_on_yourself(form_result):

                msg = _('Cannot revoke permission for yourself as admin')

                h.flash(msg, category='warning')

                return redirect(url('edit_repo_group_perms', group_name=group_name))

        recursive = form_result['recursive']

        # iterate over all members(if in recursive mode) of this groups and

        # set the permissions !

        # this can be potentially heavy operation

        RepoGroupModel()._update_permissions(c.repo_group,

                                             form_result['perms_new'],

                                             form_result['perms_updates'],

                                             recursive)

        #TODO: implement this

        #action_logger(self.authuser, 'admin_changed_repo_permissions',

        #              repo_name, self.ip_addr, self.sa)

        Session().commit()

        return redirect(url('edit_repo_group_perms', group_name=group_name))

    @HasRepoGroupPermissionAnyDecorator('group.admin')

    def delete_perms(self, group_name):

        """

        DELETE an existing repository group permission user

        :param group_name:

        """

        try:

            obj_type = request.POST.get('obj_type')

            obj_id = None

            if obj_type == 'user':

                obj_id = safe_int(request.POST.get('user_id'))

            elif obj_type == 'user_group':

                obj_id = safe_int(request.POST.get('user_group_id'))

            if not c.authuser.is_admin:

                if obj_type == 'user' and c.authuser.user_id == obj_id:

                    msg = _('Cannot revoke permission for yourself as admin')

                    h.flash(msg, category='warning')

                    raise Exception('revoke admin permission on self')

            recursive = request.POST.get('recursive', 'none')

            if obj_type == 'user':

                RepoGroupModel().delete_permission(repo_group=group_name,

                                                   obj=obj_id, obj_type='user',

                                                   recursive=recursive)

            elif obj_type == 'user_group':

                RepoGroupModel().delete_permission(repo_group=group_name,

                                                   obj=obj_id,

                                                   obj_type='user_group',

                                                   recursive=recursive)

            Session().commit()

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('An error occurred during revoking of permission'),

                    category='error')

            raise HTTPInternalServerError()

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

# 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/>.

"""

kallithea.controllers.admin.user_groups

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

User Groups crud controller for pylons

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Jan 25, 2011

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import logging

import traceback

import formencode

from formencode import htmlfill

from pylons import request, tmpl_context as c, url, config

from pylons.controllers.util import redirect

from pylons.i18n.translation import _

from sqlalchemy.orm import joinedload

from sqlalchemy.sql.expression import func

from webob.exc import HTTPInternalServerError

import kallithea

from kallithea.lib import helpers as h

from kallithea.lib.exceptions import UserGroupsAssignedException, \

    RepoGroupAssignmentError

from kallithea.lib.utils2 import safe_unicode, safe_int

from kallithea.lib.auth import LoginRequired, \

    HasUserGroupPermissionAnyDecorator, HasPermissionAnyDecorator

from kallithea.lib.base import BaseController, render

from kallithea.model.scm import UserGroupList

from kallithea.model.user_group import UserGroupModel

from kallithea.model.repo import RepoModel

from kallithea.model.db import User, UserGroup, UserGroupToPerm, \

    UserGroupRepoToPerm, UserGroupRepoGroupToPerm

from kallithea.model.forms import UserGroupForm, UserGroupPermsForm, \

    CustomDefaultPermissionsForm

from kallithea.model.meta import Session

from kallithea.lib.utils import action_logger

from kallithea.lib.compat import json

log = logging.getLogger(__name__)

class UserGroupsController(BaseController):

    """REST Controller styled on the Atom Publishing Protocol"""

    @LoginRequired()

    def __before__(self):

        super(UserGroupsController, self).__before__()

        c.available_permissions = config['available_permissions']

    def __load_data(self, user_group_id):

        c.group_members_obj = sorted((x.user for x in c.user_group.members),

                                     key=lambda u: u.username.lower())

        c.group_members = [(x.user_id, x.username) for x in c.group_members_obj]

        c.available_members = sorted(((x.user_id, x.username) for x in

                                      User.query().all()),

                                     key=lambda u: u[1].lower())

    def __load_defaults(self, user_group_id):

        """

        Load defaults settings for edit, and update

        :param user_group_id:

        """

        user_group = UserGroup.get_or_404(user_group_id)

        data = user_group.get_dict()

        return data

    def index(self, format='html'):

        """GET /users_groups: All items in the collection"""

        # url('users_groups')

        _list = UserGroup.query()\

                        .order_by(func.lower(UserGroup.users_group_name))\

                        .all()

        group_iter = UserGroupList(_list, perm_set=['usergroup.admin'])

        user_groups_data = []

        total_records = len(group_iter)

        _tmpl_lookup = kallithea.CONFIG['pylons.app_globals'].mako_lookup

        template = _tmpl_lookup.get_template('data_table/_dt_elements.html')

        user_group_name = lambda user_group_id, user_group_name: (

            template.get_def("user_group_name")

            .render(user_group_id, user_group_name, _=_, h=h, c=c)

        )

        user_group_actions = lambda user_group_id, user_group_name: (

            template.get_def("user_group_actions")

            .render(user_group_id, user_group_name, _=_, h=h, c=c)

        )

        for user_gr in group_iter:

            user_groups_data.append({

                "raw_name": user_gr.users_group_name,

                "group_name": user_group_name(user_gr.users_group_id,

                                              user_gr.users_group_name),

                "desc": h.escape(user_gr.user_group_description),

                "members": len(user_gr.members),

                "active": h.boolicon(user_gr.users_group_active),

                "owner": h.person(user_gr.user.username),

                "action": user_group_actions(user_gr.users_group_id, user_gr.users_group_name)

            })

        c.data = json.dumps({

            "totalRecords": total_records,

            "startIndex": 0,

            "sort": None,

            "dir": "asc",

            "records": user_groups_data

        })

        return render('admin/user_groups/user_groups.html')

    @HasPermissionAnyDecorator('hg.admin', 'hg.usergroup.create.true')

    def create(self):

        """POST /users_groups: Create a new item"""

        # url('users_groups')

        users_group_form = UserGroupForm()()

        try:

            form_result = users_group_form.to_python(dict(request.POST))

            ug = UserGroupModel().create(name=form_result['users_group_name'],

                                         description=form_result['user_group_description'],

                                         owner=self.authuser.user_id,

                                         active=form_result['users_group_active'])

            gr = form_result['users_group_name']

            action_logger(self.authuser,

                          'admin_created_users_group:%s' % gr,

                          None, self.ip_addr, self.sa)

            h.flash(h.literal(_('Created user group %s') % h.link_to(h.escape(gr), url('edit_users_group', id=ug.users_group_id))),

                category='success')

            Session().commit()

        except formencode.Invalid as errors:

            return htmlfill.render(

                render('admin/user_groups/user_group_add.html'),

                defaults=errors.value,

                errors=errors.error_dict or {},

                prefix_error=False,

                encoding="UTF-8",

                force_defaults=False)

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('Error occurred during creation of user group %s') \

                    % request.POST.get('users_group_name'), category='error')

        return redirect(url('users_groups'))

    @HasPermissionAnyDecorator('hg.admin', 'hg.usergroup.create.true')

    def new(self, format='html'):

        """GET /user_groups/new: Form to create a new item"""

        # url('new_users_group')

        return render('admin/user_groups/user_group_add.html')

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def update(self, id):

        """PUT /user_groups/id: Update an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="PUT" />

        # Or using helpers:

        #    h.form(url('users_group', id=ID),

        #           method='put')

        # url('users_group', id=ID)

        c.user_group = UserGroup.get_or_404(id)

        c.active = 'settings'

        self.__load_data(id)

        available_members = [safe_unicode(x[0]) for x in c.available_members]

        users_group_form = UserGroupForm(edit=True,

                                         old_data=c.user_group.get_dict(),

                                         available_members=available_members)()

        try:

            form_result = users_group_form.to_python(request.POST)

            UserGroupModel().update(c.user_group, form_result)

            gr = form_result['users_group_name']

            action_logger(self.authuser,

                          'admin_updated_users_group:%s' % gr,

                          None, self.ip_addr, self.sa)

            h.flash(_('Updated user group %s') % gr, category='success')

            Session().commit()

        except formencode.Invalid as errors:

            ug_model = UserGroupModel()

            defaults = errors.value

            e = errors.error_dict or {}

            defaults.update({

                'create_repo_perm': ug_model.has_perm(id,

                                                      'hg.create.repository'),

                'fork_repo_perm': ug_model.has_perm(id,

                                                    'hg.fork.repository'),

                '_method': 'put'

            })

            return htmlfill.render(

                render('admin/user_groups/user_group_edit.html'),

                defaults=defaults,

                errors=e,

                prefix_error=False,

                encoding="UTF-8",

                force_defaults=False)

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('Error occurred during update of user group %s') \

                    % request.POST.get('users_group_name'), category='error')

        return redirect(url('edit_users_group', id=id))

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def delete(self, id):

        """DELETE /user_groups/id: Delete an existing item"""

        # Forms posted to this method should contain a hidden field:

        #    <input type="hidden" name="_method" value="DELETE" />

        # Or using helpers:

        #    h.form(url('users_group', id=ID),

        #           method='delete')

        # url('users_group', id=ID)

        usr_gr = UserGroup.get_or_404(id)

        try:

            UserGroupModel().delete(usr_gr)

            Session().commit()

            h.flash(_('Successfully deleted user group'), category='success')

        except UserGroupsAssignedException as e:

            h.flash(e, category='error')

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('An error occurred during deletion of user group'),

                    category='error')

        return redirect(url('users_groups'))

    def show(self, id, format='html'):

        """GET /user_groups/id: Show a specific item"""

        # url('users_group', id=ID)

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def edit(self, id, format='html'):

        """GET /user_groups/id/edit: Form to edit an existing item"""

        # url('edit_users_group', id=ID)

        c.user_group = UserGroup.get_or_404(id)

        c.active = 'settings'

        self.__load_data(id)

        defaults = self.__load_defaults(id)

        return htmlfill.render(

            render('admin/user_groups/user_group_edit.html'),

            defaults=defaults,

            encoding="UTF-8",

            force_defaults=False

        )

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def edit_perms(self, id):

        c.user_group = UserGroup.get_or_404(id)

        c.active = 'perms'

        repo_model = RepoModel()

        c.users_array = repo_model.get_users_js()

        c.user_groups_array = repo_model.get_user_groups_js()

        defaults = {}

        # fill user group users

        for p in c.user_group.user_user_group_to_perm:

            defaults.update({'u_perm_%s' % p.user.username:

                             p.permission.permission_name})

        for p in c.user_group.user_group_user_group_to_perm:

            defaults.update({'g_perm_%s' % p.user_group.users_group_name:

                             p.permission.permission_name})

        return htmlfill.render(

            render('admin/user_groups/user_group_edit.html'),

            defaults=defaults,

            encoding="UTF-8",

            force_defaults=False

        )

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def update_perms(self, id):

        """

        grant permission for given usergroup

        :param id:

        """

        user_group = UserGroup.get_or_404(id)

        form = UserGroupPermsForm()().to_python(request.POST)

        # set the permissions !

        try:

            UserGroupModel()._update_permissions(user_group, form['perms_new'],

                                                 form['perms_updates'])

        except RepoGroupAssignmentError:

            h.flash(_('Target group cannot be the same'), category='error')

            return redirect(url('edit_user_group_perms', id=id))

        #TODO: implement this

        #action_logger(self.authuser, 'admin_changed_repo_permissions',

        #              repo_name, self.ip_addr, self.sa)

        Session().commit()

        return redirect(url('edit_user_group_perms', id=id))

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def delete_perms(self, id):

        """

        DELETE an existing repository group permission user

        :param group_name:

        """

        try:

            obj_type = request.POST.get('obj_type')

            obj_id = None

            if obj_type == 'user':

                obj_id = safe_int(request.POST.get('user_id'))

            elif obj_type == 'user_group':

                obj_id = safe_int(request.POST.get('user_group_id'))

            if not c.authuser.is_admin:

                if obj_type == 'user' and c.authuser.user_id == obj_id:

                    msg = _('Cannot revoke permission for yourself as admin')

                    h.flash(msg, category='warning')

                    raise Exception('revoke admin permission on self')

            if obj_type == 'user':

                UserGroupModel().revoke_user_permission(user_group=id,

                                                        user=obj_id)

            elif obj_type == 'user_group':

                UserGroupModel().revoke_user_group_permission(target_user_group=id,

                                                              user_group=obj_id)

            Session().commit()

        except Exception:

            log.error(traceback.format_exc())

            h.flash(_('An error occurred during revoking of permission'),

                    category='error')

            raise HTTPInternalServerError()

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def edit_default_perms(self, id):

        c.user_group = UserGroup.get_or_404(id)

        c.active = 'default_perms'

        permissions = {

            'repositories': {},

            'repositories_groups': {}

        }

        ugroup_repo_perms = UserGroupRepoToPerm.query()\

            .options(joinedload(UserGroupRepoToPerm.permission))\

            .options(joinedload(UserGroupRepoToPerm.repository))\

            .filter(UserGroupRepoToPerm.users_group_id == id)\

            .all()

        for gr in ugroup_repo_perms:

            permissions['repositories'][gr.repository.repo_name]  \

                = gr.permission.permission_name

        ugroup_group_perms = UserGroupRepoGroupToPerm.query()\

            .options(joinedload(UserGroupRepoGroupToPerm.permission))\

            .options(joinedload(UserGroupRepoGroupToPerm.group))\

            .filter(UserGroupRepoGroupToPerm.users_group_id == id)\

            .all()

        for gr in ugroup_group_perms:

            permissions['repositories_groups'][gr.group.group_name] \

                = gr.permission.permission_name

        c.permissions = permissions

        ug_model = UserGroupModel()

        defaults = c.user_group.get_dict()

        defaults.update({

            'create_repo_perm': ug_model.has_perm(c.user_group,

                                                  'hg.create.repository'),

            'create_user_group_perm': ug_model.has_perm(c.user_group,

                                                        'hg.usergroup.create.true'),

            'fork_repo_perm': ug_model.has_perm(c.user_group,

                                                'hg.fork.repository'),

        })

        return htmlfill.render(

            render('admin/user_groups/user_group_edit.html'),

            defaults=defaults,

            encoding="UTF-8",

            force_defaults=False

        )

    @HasUserGroupPermissionAnyDecorator('usergroup.admin')

    def update_default_perms(self, id):

        """PUT /users_perm/id: Update an existing item"""

        # url('users_group_perm', id=ID, method='put')

        user_group = UserGroup.get_or_404(id)

        try: