# -*- 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.model.repo

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

Repository model 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: Jun 5, 2010

:author: marcink

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

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

"""

import os

import shutil

import logging

import traceback

from datetime import datetime

from sqlalchemy.orm import subqueryload

from kallithea.lib.utils import make_ui, is_valid_repo_uri

from kallithea.lib.vcs.backends import get_backend

from kallithea.lib.utils2 import LazyProperty, safe_str, safe_unicode, \

    remove_prefix, obfuscate_url_pw, get_current_authuser

from kallithea.lib.caching_query import FromCache

from kallithea.lib.hooks import log_delete_repository

from kallithea.model.db import Repository, UserRepoToPerm, UserGroupRepoToPerm, \

    UserRepoGroupToPerm, UserGroupRepoGroupToPerm, User, Permission, Session, \

    Statistics, UserGroup, Ui, RepoGroup, RepositoryField

from kallithea.lib import helpers as h

from kallithea.lib.auth import HasRepoPermissionLevel, HasUserGroupPermissionLevel

from kallithea.lib.exceptions import AttachedForksError

from kallithea.model.scm import UserGroupList

log = logging.getLogger(__name__)

class RepoModel(object):

    URL_SEPARATOR = Repository.url_sep()

    def _create_default_perms(self, repository, private):

        # create default permission

        default = 'repository.read'

        def_user = User.get_default_user()

        for p in def_user.user_perms:

            if p.permission.permission_name.startswith('repository.'):

                default = p.permission.permission_name

                break

        default_perm = 'repository.none' if private else default

        repo_to_perm = UserRepoToPerm()

        repo_to_perm.permission = Permission.get_by_key(default_perm)

        repo_to_perm.repository = repository

        repo_to_perm.user_id = def_user.user_id

        Session().add(repo_to_perm)

        return repo_to_perm

    @LazyProperty

    def repos_path(self):

        """

        Gets the repositories root path from database

        """

        q = Ui.query().filter(Ui.ui_key == '/').one()

        return q.ui_value

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

        repo = Repository.query() \

            .filter(Repository.repo_id == repo_id)

        if cache:

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

                                          "get_repo_%s" % repo_id))

        return repo.scalar()

    def get_repo(self, repository):

        return Repository.guess_instance(repository)

    def get_by_repo_name(self, repo_name, cache=False):

        repo = Repository.query() \

            .filter(Repository.repo_name == repo_name)

        if cache:

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

                                          "get_repo_%s" % repo_name))

        return repo.scalar()

    def get_all_user_repos(self, user):

        """

        Gets all repositories that user have at least read access

        :param user:

        """

        from kallithea.lib.auth import AuthUser

        user = User.guess_instance(user)

        repos = AuthUser(dbuser=user).permissions['repositories']

        access_check = lambda r: r[1] in ['repository.read',

                                          'repository.write',

                                          'repository.admin']

        repos = [x[0] for x in filter(access_check, repos.items())]

        return Repository.query().filter(Repository.repo_name.in_(repos))

    def get_users_js(self):

        users = User.query() \

            .filter(User.active == True) \

            .order_by(User.name, User.lastname) \

            .all()

        return [

            {

                'id': u.user_id,

                'fname': h.escape(u.name),

                'lname': h.escape(u.lastname),

                'nname': u.username,

                'gravatar_lnk': h.gravatar_url(u.email, size=28, default='default'),

                'gravatar_size': 14,

            } for u in users]

    @classmethod

    def _render_datatable(cls, tmpl, *args, **kwargs):

        import kallithea

        from tg import tmpl_context as c, request, app_globals

        from tg.i18n import ugettext as _

        _tmpl_lookup = app_globals.mako_lookup

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

        tmpl = template.get_def(tmpl)

        kwargs.update(dict(_=_, h=h, c=c, request=request))

        return tmpl.render(*args, **kwargs)

    def get_repos_as_dict(self, repos_list, repo_groups_list=None,

                          admin=False,

                          short_name=False):

        """Return repository list for use by DataTable.

        repos_list: list of repositories - but will be filtered for read permission.

        repo_groups_list: added at top of list without permission check.

        admin: return data for action column.

        """

        _render = self._render_datatable

        from tg import tmpl_context as c

        def repo_lnk(name, rtype, rstate, private, fork_of):

            return _render('repo_name', name, rtype, rstate, private, fork_of,

                           short_name=short_name)

        def last_change(last_change):

            return _render("last_change", last_change)

        def rss_lnk(repo_name):

            return _render("rss", repo_name)

        def atom_lnk(repo_name):

            return _render("atom", repo_name)

        def last_rev(repo_name, cs_cache):

            return _render('revision', repo_name, cs_cache.get('revision'),

                           cs_cache.get('raw_id'), cs_cache.get('author'),

                           cs_cache.get('message'))

        def desc(desc):

            return h.urlify_text(desc, truncate=80, stylize=c.visual.stylify_metalabels)

        def state(repo_state):

            return _render("repo_state", repo_state)

        def repo_actions(repo_name):

            return _render('repo_actions', repo_name)

        def owner_actions(owner_id, username):

            return _render('user_name', owner_id, username)

        repos_data = []

        for gr in repo_groups_list or []:

            repos_data.append(dict(

                raw_name='\0' + gr.name, # sort before repositories

                just_name=gr.name,

                name=_render('group_name_html', group_name=gr.group_name, name=gr.name),

                desc=gr.group_description))

        for repo in repos_list:

            if not HasRepoPermissionLevel('read')(repo.repo_name, 'get_repos_as_dict check'):

                continue

            cs_cache = repo.changeset_cache

            row = {

                "raw_name": repo.repo_name,

                "just_name": repo.just_name,

                "name": repo_lnk(repo.repo_name, repo.repo_type,

                                 repo.repo_state, repo.private, repo.fork),

                "last_change_iso": repo.last_db_change.isoformat(),

                "last_change": last_change(repo.last_db_change),

                "last_changeset": last_rev(repo.repo_name, cs_cache),

                "last_rev_raw": cs_cache.get('revision'),

                "desc": desc(repo.description),

                "owner": h.person(repo.owner),

                "state": state(repo.repo_state),

                "rss": rss_lnk(repo.repo_name),

                "atom": atom_lnk(repo.repo_name),

            }

            if admin:

                row.update({

                    "action": repo_actions(repo.repo_name),

                    "owner": owner_actions(repo.owner_id,

                                           h.person(repo.owner))

                })

            repos_data.append(row)

        return {

            "sort": "name",

            "dir": "asc",

            "records": repos_data

        }

    def _get_defaults(self, repo_name):

        """

        Gets information about repository, and returns a dict for

        usage in forms

        :param repo_name:

        """

        repo_info = Repository.get_by_repo_name(repo_name)

        if repo_info is None:

            return None

        defaults = repo_info.get_dict()

        defaults['repo_name'] = repo_info.just_name

        defaults['repo_group'] = repo_info.group_id

        for strip, k in [(0, 'repo_type'), (1, 'repo_enable_downloads'),

                         (1, 'repo_description'), (1, 'repo_enable_locking'),

                         (1, 'repo_landing_rev'), (0, 'clone_uri'),

                         (1, 'repo_private'), (1, 'repo_enable_statistics')]:

            attr = k

            if strip:

                attr = remove_prefix(k, 'repo_')

            val = defaults[attr]

            if k == 'repo_landing_rev':

                val = ':'.join(defaults[attr])

            defaults[k] = val

            if k == 'clone_uri':

                defaults['clone_uri_hidden'] = repo_info.clone_uri_hidden

        # fill owner

        if repo_info.owner:

            defaults.update({'owner': repo_info.owner.username})

        else:

            replacement_user = User.query().filter(User.admin ==

                                                   True).first().username

            defaults.update({'owner': replacement_user})

        # fill repository users

        for p in repo_info.repo_to_perm:

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

                                 p.permission.permission_name})

        # fill repository groups

        for p in repo_info.users_group_to_perm:

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

                                 p.permission.permission_name})

        return defaults

    def update(self, repo, **kwargs):

        try:

            cur_repo = Repository.guess_instance(repo)

            org_repo_name = cur_repo.repo_name

            if 'owner' in kwargs:

                cur_repo.owner = User.get_by_username(kwargs['owner'])

            if 'repo_group' in kwargs:

                assert kwargs['repo_group'] != u'-1', kwargs # RepoForm should have converted to None

                cur_repo.group = RepoGroup.get(kwargs['repo_group'])

                cur_repo.repo_name = cur_repo.get_new_name(cur_repo.just_name)

            log.debug('Updating repo %s with params:%s', cur_repo, kwargs)

            for k in ['repo_enable_downloads',

                      'repo_description',

                      'repo_enable_locking',

                      'repo_landing_rev',

                      'repo_private',

                      'repo_enable_statistics',

                      ]:

                if k in kwargs:

                    setattr(cur_repo, remove_prefix(k, 'repo_'), kwargs[k])

            clone_uri = kwargs.get('clone_uri')

            if clone_uri is not None and clone_uri != cur_repo.clone_uri_hidden:

                # clone_uri is modified - if given a value, check it is valid

                if clone_uri != '':

                    # will raise exception on error

                    is_valid_repo_uri(cur_repo.repo_type, clone_uri, make_ui('db', clear_session=False))

                cur_repo.clone_uri = clone_uri

            if 'repo_name' in kwargs:

            # if private flag is set, reset default permission to NONE

            if kwargs.get('repo_private'):

                EMPTY_PERM = 'repository.none'

                RepoModel().grant_user_permission(

                    repo=cur_repo, user='default', perm=EMPTY_PERM

                )

                # handle extra fields

            for field in filter(lambda k: k.startswith(RepositoryField.PREFIX),

                                kwargs):

                k = RepositoryField.un_prefix_key(field)

                ex_field = RepositoryField.get_by_key_name(key=k, repo=cur_repo)

                if ex_field:

                    ex_field.field_value = kwargs[field]

            if org_repo_name != cur_repo.repo_name:

                # rename repository

                self._rename_filesystem_repo(old=org_repo_name, new=cur_repo.repo_name)

            return cur_repo

        except Exception:

            log.error(traceback.format_exc())

            raise

    def _create_repo(self, repo_name, repo_type, description, owner,

                     private=False, clone_uri=None, repo_group=None,

                     landing_rev='rev:tip', fork_of=None,

                     copy_fork_permissions=False, enable_statistics=False,

                     enable_locking=False, enable_downloads=False,

                     copy_group_permissions=False, state=Repository.STATE_PENDING):

        """

        Create repository inside database with PENDING state. This should only be

        executed by create() repo, with exception of importing existing repos.

        """

        from kallithea.model.scm import ScmModel

        owner = User.guess_instance(owner)

        fork_of = Repository.guess_instance(fork_of)

        repo_group = RepoGroup.guess_instance(repo_group)

        try:

            repo_name = safe_unicode(repo_name)

            description = safe_unicode(description)

            # repo name is just a name of repository

            # while repo_name_full is a full qualified name that is combined

            # with name and path of group

            repo_name_full = repo_name

            repo_name = repo_name.split(self.URL_SEPARATOR)[-1]

            new_repo = Repository()

            new_repo.repo_state = state

            new_repo.enable_statistics = False

            new_repo.repo_name = repo_name_full

            new_repo.repo_type = repo_type

            new_repo.owner = owner

            new_repo.group = repo_group

            new_repo.description = description or repo_name

            new_repo.private = private

            if clone_uri:

                # will raise exception on error

                is_valid_repo_uri(repo_type, clone_uri, make_ui('db', clear_session=False))

            new_repo.clone_uri = clone_uri

            new_repo.landing_rev = landing_rev

            new_repo.enable_statistics = enable_statistics

            new_repo.enable_locking = enable_locking

            new_repo.enable_downloads = enable_downloads

            if repo_group:

                new_repo.enable_locking = repo_group.enable_locking

            if fork_of:

                parent_repo = fork_of

                new_repo.fork = parent_repo

            Session().add(new_repo)

            if fork_of and copy_fork_permissions:

                repo = fork_of

                user_perms = UserRepoToPerm.query() \

                    .filter(UserRepoToPerm.repository == repo).all()

                group_perms = UserGroupRepoToPerm.query() \

                    .filter(UserGroupRepoToPerm.repository == repo).all()

                for perm in user_perms:

                    UserRepoToPerm.create(perm.user, new_repo, perm.permission)

                for perm in group_perms:

                    UserGroupRepoToPerm.create(perm.users_group, new_repo,

                                               perm.permission)

            elif repo_group and copy_group_permissions:

                user_perms = UserRepoGroupToPerm.query() \

                    .filter(UserRepoGroupToPerm.group == repo_group).all()

                group_perms = UserGroupRepoGroupToPerm.query() \

                    .filter(UserGroupRepoGroupToPerm.group == repo_group).all()

                for perm in user_perms:

                    perm_name = perm.permission.permission_name.replace('group.', 'repository.')

                    perm_obj = Permission.get_by_key(perm_name)

                    UserRepoToPerm.create(perm.user, new_repo, perm_obj)

                for perm in group_perms:

                    perm_name = perm.permission.permission_name.replace('group.', 'repository.')

                    perm_obj = Permission.get_by_key(perm_name)

                    UserGroupRepoToPerm.create(perm.users_group, new_repo, perm_obj)

            else:

                self._create_default_perms(new_repo, private)

            # now automatically start following this repository as owner

            ScmModel().toggle_following_repo(new_repo.repo_id, owner.user_id)

            # we need to flush here, in order to check if database won't

            # throw any exceptions, create filesystem dirs at the very end

            Session().flush()

            return new_repo

        except Exception:

            log.error(traceback.format_exc())

            raise

    def create(self, form_data, cur_user):

        """

        Create repository using celery tasks

        :param form_data:

        :param cur_user:

        """

        from kallithea.lib.celerylib import tasks

        return tasks.create_repo(form_data, cur_user)

    def _update_permissions(self, repo, perms_new=None, perms_updates=None,

                            check_perms=True):

        if not perms_new:

            perms_new = []

        if not perms_updates:

            perms_updates = []

        # update permissions

        for member, perm, member_type in perms_updates:

            if member_type == 'user':

                # this updates existing one

                self.grant_user_permission(

                    repo=repo, user=member, perm=perm

                )

            else:

                # check if we have permissions to alter this usergroup's access

                if not check_perms or HasUserGroupPermissionLevel('read')(member):

                    self.grant_user_group_permission(

                        repo=repo, group_name=member, perm=perm

                    )

            # set new permissions

        for member, perm, member_type in perms_new:

            if member_type == 'user':

                self.grant_user_permission(

                    repo=repo, user=member, perm=perm

                )

            else:

                # check if we have permissions to alter this usergroup's access

                if not check_perms or HasUserGroupPermissionLevel('read')(member):

                    self.grant_user_group_permission(

                        repo=repo, group_name=member, perm=perm

                    )

    def create_fork(self, form_data, cur_user):

        """

        Simple wrapper into executing celery task for fork creation

        :param form_data:

        :param cur_user:

        """

        from kallithea.lib.celerylib import tasks

        return tasks.create_repo_fork(form_data, cur_user)

    def delete(self, repo, forks=None, fs_remove=True, cur_user=None):

        """

        Delete given repository, forks parameter defines what do do with

        attached forks. Throws AttachedForksError if deleted repo has attached

        forks

        :param repo:

        :param forks: str 'delete' or 'detach'

        :param fs_remove: remove(archive) repo from filesystem

        """

        if not cur_user:

            cur_user = getattr(get_current_authuser(), 'username', None)

        repo = Repository.guess_instance(repo)

        if repo is not None:

            if forks == 'detach':

                for r in repo.forks:

                    r.fork = None

            elif forks == 'delete':

                for r in repo.forks:

                    self.delete(r, forks='delete')

            elif [f for f in repo.forks]:

                raise AttachedForksError()

            old_repo_dict = repo.get_dict()

            try:

                Session().delete(repo)

                if fs_remove:

                    self._delete_filesystem_repo(repo)

                else:

                    log.debug('skipping removal from filesystem')

                log_delete_repository(old_repo_dict,

                                      deleted_by=cur_user)

            except Exception:

                log.error(traceback.format_exc())

                raise

    def grant_user_permission(self, repo, user, perm):

        """

        Grant permission for user on given repository, or update existing one

        if found

        :param repo: Instance of Repository, repository_id, or repository name

        :param user: Instance of User, user_id or username

        :param perm: Instance of Permission, or permission_name

        """

        user = User.guess_instance(user)

        repo = Repository.guess_instance(repo)

        permission = Permission.guess_instance(perm)

        # check if we have that permission already

        obj = UserRepoToPerm.query() \

            .filter(UserRepoToPerm.user == user) \

            .filter(UserRepoToPerm.repository == repo) \

            .scalar()

        if obj is None:

            # create new !

            obj = UserRepoToPerm()

            Session().add(obj)

        obj.repository = repo

        obj.user = user

        obj.permission = permission

        log.debug('Granted perm %s to %s on %s', perm, user, repo)

        return obj

    def revoke_user_permission(self, repo, user):

        """

        Revoke permission for user on given repository

        :param repo: Instance of Repository, repository_id, or repository name

        :param user: Instance of User, user_id or username

        """

        user = User.guess_instance(user)

        repo = Repository.guess_instance(repo)

        obj = UserRepoToPerm.query() \

            .filter(UserRepoToPerm.repository == repo) \

            .filter(UserRepoToPerm.user == user) \

            .scalar()

        if obj is not None:

            Session().delete(obj)

            log.debug('Revoked perm on %s on %s', repo, user)

    def grant_user_group_permission(self, repo, group_name, perm):

        """

        Grant permission for user group on given repository, or update

        existing one if found

        :param repo: Instance of Repository, repository_id, or repository name

        :param group_name: Instance of UserGroup, users_group_id,

            or user group name

        :param perm: Instance of Permission, or permission_name

        """

        repo = Repository.guess_instance(repo)

        group_name = UserGroup.guess_instance(group_name)

        permission = Permission.guess_instance(perm)

        # check if we have that permission already

        obj = UserGroupRepoToPerm.query() \

            .filter(UserGroupRepoToPerm.users_group == group_name) \

            .filter(UserGroupRepoToPerm.repository == repo) \

            .scalar()

        if obj is None:

            # create new

            obj = UserGroupRepoToPerm()

            Session().add(obj)

        obj.repository = repo

        obj.users_group = group_name

        obj.permission = permission

        log.debug('Granted perm %s to %s on %s', perm, group_name, repo)

        return obj

    def revoke_user_group_permission(self, repo, group_name):

        """

        Revoke permission for user group on given repository

        :param repo: Instance of Repository, repository_id, or repository name

        :param group_name: Instance of UserGroup, users_group_id,

            or user group name

        """

        repo = Repository.guess_instance(repo)

        group_name = UserGroup.guess_instance(group_name)

        obj = UserGroupRepoToPerm.query() \

            .filter(UserGroupRepoToPerm.repository == repo) \

            .filter(UserGroupRepoToPerm.users_group == group_name) \

            .scalar()

        if obj is not None:

            Session().delete(obj)

            log.debug('Revoked perm to %s on %s', repo, group_name)

    def delete_stats(self, repo_name):

        """

        removes stats for given repo

        :param repo_name:

        """

        repo = Repository.guess_instance(repo_name)

        try:

            obj = Statistics.query() \

                .filter(Statistics.repository == repo).scalar()

            if obj is not None:

                Session().delete(obj)

        except Exception:

            log.error(traceback.format_exc())

            raise

    def _create_filesystem_repo(self, repo_name, repo_type, repo_group,

                                clone_uri=None, repo_store_location=None):

        """

        Makes repository on filesystem. Operation is group aware, meaning that it will create

        a repository within a group, and alter the paths accordingly to the group location.

        Note: clone_uri is low level and not validated - it might be a file system path used for validated cloning

        """

        from kallithea.lib.utils import is_valid_repo, is_valid_repo_group

        from kallithea.model.scm import ScmModel

        if '/' in repo_name:

            raise ValueError('repo_name must not contain groups got `%s`' % repo_name)

        if isinstance(repo_group, RepoGroup):

            new_parent_path = os.sep.join(repo_group.full_path_splitted)

        else:

            new_parent_path = repo_group or ''

        if repo_store_location:

            _paths = [repo_store_location]

        else:

            _paths = [self.repos_path, new_parent_path, repo_name]

            # we need to make it str for mercurial

        repo_path = os.path.join(*map(lambda x: safe_str(x), _paths))

        # check if this path is not a repository

        if is_valid_repo(repo_path, self.repos_path):

            raise Exception('This path %s is a valid repository' % repo_path)

        # check if this path is a group

        if is_valid_repo_group(repo_path, self.repos_path):

            raise Exception('This path %s is a valid group' % repo_path)

        log.info('creating repo %s in %s from url: `%s`',

            repo_name, safe_unicode(repo_path),

            obfuscate_url_pw(clone_uri))

        backend = get_backend(repo_type)

        if repo_type == 'hg':

            baseui = make_ui('db', clear_session=False)

            # patch and reset hooks section of UI config to not run any

            # hooks on creating remote repo

            for k, v in baseui.configitems('hooks'):

                baseui.setconfig('hooks', k, None)

            repo = backend(repo_path, create=True, src_url=clone_uri, baseui=baseui)

        elif repo_type == 'git':

            repo = backend(repo_path, create=True, src_url=clone_uri, bare=True)

            # add kallithea hook into this repo

            ScmModel().install_git_hooks(repo=repo)

        else:

            raise Exception('Not supported repo_type %s expected hg/git' % repo_type)

        log.debug('Created repo %s with %s backend',

                  safe_unicode(repo_name), safe_unicode(repo_type))

        return repo

    def _rename_filesystem_repo(self, old, new):

        """

        renames repository on filesystem

        :param old: old name

        :param new: new name

        """

        log.info('renaming repo from %s to %s', old, new)

        old_path = safe_str(os.path.join(self.repos_path, old))

        new_path = safe_str(os.path.join(self.repos_path, new))

        if os.path.isdir(new_path):

            raise Exception(

                'Was trying to rename to already existing dir %s' % new_path

            )

        shutil.move(old_path, new_path)

    def _delete_filesystem_repo(self, repo):

        """

        removes repo from filesystem, the removal is actually done by

        renaming dir to a 'rm__*' prefix which Kallithea will skip.

        It can be undeleted later by reverting the rename.

        :param repo: repo object

        """

        rm_path = safe_str(os.path.join(self.repos_path, repo.repo_name))

        log.info("Removing %s", rm_path)

        _now = datetime.now()

        _ms = str(_now.microsecond).rjust(6, '0')

        _d = 'rm__%s__%s' % (_now.strftime('%Y%m%d_%H%M%S_' + _ms),

                             repo.just_name)

        if repo.group:

            args = repo.group.full_path_splitted + [_d]

            _d = os.path.join(*args)

        if os.path.exists(rm_path):

            shutil.move(rm_path, safe_str(os.path.join(self.repos_path, _d)))

        else:

            log.error("Can't find repo to delete in %r", rm_path)

# -*- 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.model.repo_group

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

repo group model 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: Jan 25, 2011

:author: marcink

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

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

"""

import os

import logging

import traceback

import shutil

import datetime

from kallithea.lib.utils2 import LazyProperty

from kallithea.model.db import RepoGroup, Session, Ui, UserRepoGroupToPerm, \

    User, Permission, UserGroupRepoGroupToPerm, UserGroup, Repository

log = logging.getLogger(__name__)

class RepoGroupModel(object):

    @LazyProperty

    def repos_path(self):

        """

        Gets the repositories root path from database

        """

        q = Ui.get_by_key('paths', '/')

        return q.ui_value

    def _create_default_perms(self, new_group):

        # create default permission

        default_perm = 'group.read'

        def_user = User.get_default_user()

        for p in def_user.user_perms:

            if p.permission.permission_name.startswith('group.'):

                default_perm = p.permission.permission_name

                break

        repo_group_to_perm = UserRepoGroupToPerm()

        repo_group_to_perm.permission = Permission.get_by_key(default_perm)

        repo_group_to_perm.group = new_group

        repo_group_to_perm.user_id = def_user.user_id

        Session().add(repo_group_to_perm)

        return repo_group_to_perm

    def _create_group(self, group_name):

        """

        makes repository group on filesystem

        :param repo_name:

        :param parent_id:

        """

        create_path = os.path.join(self.repos_path, group_name)

        log.debug('creating new group in %s', create_path)

        if os.path.isdir(create_path):

            raise Exception('That directory already exists !')

        os.makedirs(create_path)

        log.debug('Created group in %s', create_path)

    def _rename_group(self, old, new):

        """

        Renames a group on filesystem

        :param group_name:

        """

        if old == new:

            log.debug('skipping group rename')

            return

        log.debug('renaming repository group from %s to %s', old, new)

        old_path = os.path.join(self.repos_path, old)

        new_path = os.path.join(self.repos_path, new)

        log.debug('renaming repos paths from %s to %s', old_path, new_path)

        if os.path.isdir(new_path):

            raise Exception('Was trying to rename to already '

                            'existing dir %s' % new_path)

        shutil.move(old_path, new_path)

    def _delete_group(self, group, force_delete=False):

        """

        Deletes a group from a filesystem

        :param group: instance of group from database

        :param force_delete: use shutil rmtree to remove all objects

        """

        paths = group.full_path.split(RepoGroup.url_sep())

        paths = os.sep.join(paths)

        rm_path = os.path.join(self.repos_path, paths)

        log.info("Removing group %s", rm_path)

        # delete only if that path really exists

        if os.path.isdir(rm_path):