# if INDEX_EXTENSIONS is [] it'll use pygments lexers extensions by default.

# To set your own just add to this list extensions to index with content

INDEX_EXTENSIONS = []

# additional extensions for indexing besides the default from pygments

# those gets added to INDEX_EXTENSIONS

EXTRA_INDEX_EXTENSIONS = []

#==============================================================================

# POST CREATE REPOSITORY HOOK

#==============================================================================

# this function will be executed after each repository is created

def _crrepohook(*args, **kwargs):

    """

    Post create repository HOOK

    kwargs available:

     :param repo_name:

     :param repo_type:

     :param description:

     :param private:

     :param created_on:

     :param enable_downloads:

     :param repo_id:

     :param enable_statistics:

     :param clone_uri:

     :param fork_id:

     :param group_id:

     :param created_by:

    """

    return 0

CREATE_REPO_HOOK = _crrepohook

#==============================================================================

# PRE CREATE USER HOOK

#==============================================================================

# this function will be executed before each user is created

def _pre_cruserhook(*args, **kwargs):

    """

    Pre create user HOOK, it returns a tuple of bool, reason.

    If bool is False the user creation will be stopped and reason

    will be displayed to the user.

    kwargs available:

    :param username:

    :param password:

    :param email:

    :param firstname:

      :param password:

      :param emails:

      :param inherit_default_permissions:

      :param created_by:

    """

    return 0

CREATE_USER_HOOK = _cruserhook

#==============================================================================

# POST DELETE REPOSITORY HOOK

#==============================================================================

# this function will be executed after each repository deletion

def _dlrepohook(*args, **kwargs):

    """

    Post delete repository HOOK

    kwargs available:

     :param repo_name:

     :param repo_type:

     :param description:

     :param private:

     :param created_on:

     :param enable_downloads:

     :param repo_id:

     :param enable_statistics:

     :param clone_uri:

     :param fork_id:

     :param group_id:

     :param deleted_by:

     :param deleted_on:

    """

    return 0

DELETE_REPO_HOOK = _dlrepohook

#==============================================================================

# POST DELETE USER HOOK

#==============================================================================

# this function will be executed after each user is deleted

def _dluserhook(*args, **kwargs):

    """

    Post delete user HOOK

    kwargs available:

      :param username:

      :param full_name_or_username:

      :param full_contact:

      :param user_id:

      :param name:

    #         path_prefix='/admin', name_prefix='admin_')

    @LoginRequired()

    @NotAnonymous()

    def __before__(self):

        super(MyAccountController, self).__before__()

    def __load_data(self):

        c.user = User.get(self.authuser.user_id)

        if c.user.username == User.DEFAULT_USER:

            h.flash(_("You can't edit this user since it's"

                      " crucial for entire application"), category='warning')

            raise HTTPFound(location=url('users'))

    def _load_my_repos_data(self, watched=False):

        if watched:

            admin = False

            repos_list = Session().query(Repository) \

                         .join(UserFollowing) \

                         .filter(UserFollowing.user_id ==

                                 self.authuser.user_id).all()

        else:

            admin = True

            repos_list = Session().query(Repository) \

                                 self.authuser.user_id).all()

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

                                                   admin=admin)

        #json used to render the grid

        return json.dumps(repos_data)

    def my_account(self):

        c.active = 'profile'

        self.__load_data()

        c.perm_user = AuthUser(user_id=self.authuser.user_id)

        c.ip_addr = self.ip_addr

        managed_fields = auth_modules.get_managed_fields(c.user)

        def_user_perms = User.get_default_user().AuthUser.permissions['global']

        if 'hg.register.none' in def_user_perms:

            managed_fields.extend(['username', 'firstname', 'lastname', 'email'])

        c.readonly = lambda n: 'readonly' if n in managed_fields else None

        defaults = c.user.get_dict()

        update = False

        if request.POST:

            _form = UserForm(edit=True,

                             old_data={'user_id': self.authuser.user_id,

        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,

                "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):

        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'],

                        .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),

                "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):

        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']

        ERROR OUTPUT::

          id : <id_given_in_input>

          result : null

          error :  {

            "failed to update user group `<user group name>`"

          }

        """

        user_group = get_user_group_or_error(usergroupid)

        if not HasPermissionAny('hg.admin')():

            # check if we have admin permission for this user group !

            _perms = ('usergroup.admin',)

            if not HasUserGroupPermissionAny(*_perms)(

                    user_group_name=user_group.users_group_name):

                raise JSONRPCError('user group `%s` does not exist' % (usergroupid,))

        if not isinstance(owner, Optional):

            owner = get_user_or_error(owner)

        updates = {}

        store_update(updates, group_name, 'users_group_name')

        store_update(updates, description, 'user_group_description')

        store_update(updates, active, 'users_group_active')

        try:

            UserGroupModel().update(user_group, updates)

            Session().commit()

            return dict(

                msg='updated user group ID:%s %s' % (user_group.users_group_id,

                                                     user_group.users_group_name),

                user_group=user_group.get_api_data()

            )

        except Exception:

            log.error(traceback.format_exc())

            raise JSONRPCError('failed to update user group `%s`' % (usergroupid,))

    # permission check inside

    def delete_user_group(self, usergroupid):

        """

        Delete given user group by user group id or name.

        This command can be executed only using api_key

        belonging to user with admin rights or an admin of given user group

        :param usergroupid:

        :type usergroupid: int

        OUTPUT::

        if not HasPermissionAny('hg.admin')():

            # check if we have admin permission for this repo !

            if not HasRepoPermissionAny('repository.admin')(repo_name=repo.repo_name):

                raise JSONRPCError('repository `%s` does not exist' % (repoid,))

            if (name != repo.repo_name and

                not HasPermissionAny('hg.create.repository')()

                ):

                raise JSONRPCError('no permission to create (or move) repositories')

            if not isinstance(owner, Optional):

                # forbid setting owner for non-admins

                raise JSONRPCError(

                    'Only Kallithea admin can specify `owner` param'

                )

        updates = {}

        repo_group = group

        if not isinstance(repo_group, Optional):

            repo_group = get_repo_group_or_error(repo_group)

            repo_group = repo_group.group_id

        try:

            store_update(updates, name, 'repo_name')

            store_update(updates, repo_group, 'repo_group')

            store_update(updates, description, 'repo_description')

            store_update(updates, private, 'repo_private')

            store_update(updates, clone_uri, 'clone_uri')

            store_update(updates, landing_rev, 'repo_landing_rev')

            store_update(updates, enable_statistics, 'repo_enable_statistics')

            store_update(updates, enable_locking, 'repo_enable_locking')

            store_update(updates, enable_downloads, 'repo_enable_downloads')

            RepoModel().update(repo, **updates)

            Session().commit()

            return dict(

                msg='updated repo ID:%s %s' % (repo.repo_id, repo.repo_name),

                repository=repo.get_api_data()

            )

        except Exception:

            log.error(traceback.format_exc())

            raise JSONRPCError('failed to update repo `%s`' % repoid)

    @HasPermissionAnyDecorator('hg.admin', 'hg.fork.repository')

    def fork_repo(self, repoid, fork_name,

                  owner=Optional(OAttr('apiuser')),

                  description=Optional(''), copy_permissions=Optional(False),

                  private=Optional(False), landing_rev=Optional('rev:tip')):

        """

    @LoginRequired()

    @NotAnonymous()

    def index(self):

        # Return a rendered template

        p = safe_int(request.GET.get('page'), 1)

        c.user = User.get(self.authuser.user_id)

        c.following = self.sa.query(UserFollowing) \

            .filter(UserFollowing.user_id == self.authuser.user_id) \

            .options(joinedload(UserFollowing.follows_repository)) \

            .all()

        journal = self._get_journal_data(c.following)

        def url_generator(**kw):

            return url.current(filter=c.search_term, **kw)

        c.journal_pager = Page(journal, page=p, items_per_page=20, url=url_generator)

        c.journal_day_aggregate = self._get_daily_aggregate(c.journal_pager)

        if request.environ.get('HTTP_X_PARTIAL_XHR'):

            return render('journal/journal_data.html')

        repos_list = Repository.query(sorted=True) \

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

                                                   admin=True)

        #json used to render the grid

        c.data = json.dumps(repos_data)

        watched_repos_data = []

        ## watched repos

        _render = RepoModel._render_datatable

        def quick_menu(repo_name):

            return _render('quick_menu', repo_name)

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

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

                           short_name=False, admin=False)

        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):

                if tipbranch:

                    selected = 'branch:%s:%s' % (tipbranch, tiprev)

                else:

                    selected = 'tag:null:' + repo.EMPTY_CHANGESET

                    tags.append((selected, 'null'))

            else:

                if 'master' in repo.branches:

                    selected = 'branch:master:%s' % repo.branches['master']

                else:

                    k, v = repo.branches.items()[0]

                    selected = 'branch:%s:%s' % (k, v)

        groups = [(specials, _("Special")),

                  (peers, _("Peer branches")),

                  (bookmarks, _("Bookmarks")),

                  (branches, _("Branches")),

                  (tags, _("Tags")),

                  ]

        return [g for g in groups if g[0]], selected

    def _get_is_allowed_change_status(self, pull_request):

        if pull_request.is_closed():

            return False

        reviewer = PullRequestReviewers.query() \

            .filter(PullRequestReviewers.pull_request == pull_request) \

            .filter(PullRequestReviewers.user_id == self.authuser.user_id) \

            .count() != 0

        return self.authuser.admin or owner or reviewer

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def show_all(self, repo_name):

        c.from_ = request.GET.get('from_') or ''

        c.closed = request.GET.get('closed') or ''

        p = safe_int(request.GET.get('page'), 1)

        q = PullRequest.query(include_closed=c.closed, sorted=True)

        if c.from_:

            q = q.filter_by(org_repo=c.db_repo)

        else:

            q = q.filter_by(other_repo=c.db_repo)

        c.pull_requests = q.all()

        c.pullrequests_pager = Page(c.pull_requests, page=p, items_per_page=100)

        return render('/pullrequests/pullrequest_show_all.html')

    @LoginRequired()

    @NotAnonymous()

    def show_my(self):

        c.closed = request.GET.get('closed') or ''

        c.my_pull_requests = PullRequest.query(

            include_closed=c.closed,

            sorted=True,

        c.participate_in_pull_requests = []

        c.participate_in_pull_requests_todo = []

        done_status = set([ChangesetStatus.STATUS_APPROVED, ChangesetStatus.STATUS_REJECTED])

        for pr in PullRequest.query(

            include_closed=c.closed,

            reviewer_id=self.authuser.user_id,

            sorted=True,

        ):

            status = pr.user_review_status(c.authuser.user_id) # very inefficient!!!

            if status in done_status:

                c.participate_in_pull_requests.append(pr)

            else:

                c.participate_in_pull_requests_todo.append(pr)

        return render('/pullrequests/pullrequest_show_my.html')

    @LoginRequired()

    @NotAnonymous()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def index(self):

        org_repo = c.db_repo

        org_scm_instance = org_repo.scm_instance

            text=_('Closed, next iteration: %s .') % pull_request.url(canonical=True),

            repo=old_pull_request.other_repo.repo_id,

            user=c.authuser.user_id,

            pull_request=old_pull_request.pull_request_id,

            closing_pr=True)

        PullRequestModel().close_pull_request(old_pull_request.pull_request_id)

        Session().commit()

        h.flash(_('New pull request iteration created'),

                category='success')

        raise HTTPFound(location=pull_request.url())

    # pullrequest_post for PR editing

    @LoginRequired()

    @NotAnonymous()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def post(self, repo_name, pull_request_id):

        pull_request = PullRequest.get_or_404(pull_request_id)

        if pull_request.is_closed():

            raise HTTPForbidden()

        assert pull_request.other_repo.repo_name == repo_name

        #only owner or admin can update it

        repo_admin = h.HasRepoPermissionAny('repository.admin')(c.repo_name)

        if not (h.HasPermissionAny('hg.admin')() or repo_admin or owner):

            raise HTTPForbidden()

        _form = PullRequestPostForm()().to_python(request.POST)

        reviewers_ids = [int(s) for s in _form['review_members']]

        if _form['updaterev']:

            return self.create_new_iteration(pull_request,

                                      _form['updaterev'],

                                      _form['pullrequest_title'],

                                      _form['pullrequest_desc'],

                                      reviewers_ids)

        old_description = pull_request.description

        pull_request.title = _form['pullrequest_title']

        pull_request.description = _form['pullrequest_desc'].strip() or _('No description')

        pull_request.owner = User.get_by_username(_form['owner'])

        user = User.get(c.authuser.user_id)

        try:

            PullRequestModel().mention_from_description(user, pull_request, old_description)

            PullRequestModel().update_reviewers(user, pull_request_id, reviewers_ids)

        except UserInvalidException as u:

            h.flash(_('Invalid reviewer "%s" specified') % u, category='error')

            permissions[GK][rg_k] = p

        # user groups

        for perm in default_user_group_perms:

            u_k = perm.UserUserGroupToPerm.user_group.users_group_name

            p = 'usergroup.admin'

            permissions[UK][u_k] = p

        return permissions

    #==================================================================

    # SET DEFAULTS GLOBAL, REPOS, REPOSITORY GROUPS

    #==================================================================

    # default global permissions taken from the default user

    default_global_perms = UserToPerm.query() \

        .filter(UserToPerm.user_id == default_user_id) \

        .options(joinedload(UserToPerm.permission))

    for perm in default_global_perms:

        permissions[GLOBAL].add(perm.permission.permission_name)

    # defaults for repositories, taken from default user

    for perm in default_repo_perms:

        r_k = perm.UserRepoToPerm.repository.repo_name

            # disable defaults for private repos,

            p = 'repository.none'

            # set admin if owner

            p = 'repository.admin'

        else:

            p = perm.Permission.permission_name

        permissions[RK][r_k] = p

    # defaults for repository groups taken from default user permission

    # on given group

    for perm in default_repo_groups_perms:

        rg_k = perm.UserRepoGroupToPerm.group.group_name

        p = perm.Permission.permission_name

        permissions[GK][rg_k] = p

    # defaults for user groups taken from default user permission

    # on given user group

    for perm in default_user_group_perms:

        u_k = perm.UserUserGroupToPerm.user_group.users_group_name

        p = perm.Permission.permission_name

        permissions[UK][u_k] = p

    #======================================================================

    # !! OVERRIDE GLOBALS !! with user permissions if any found

    #======================================================================

    #======================================================================

    # user group for repositories permissions

    user_repo_perms_from_users_groups = \

     Session().query(UserGroupRepoToPerm, Permission, Repository,) \

        .join((Repository, UserGroupRepoToPerm.repository_id ==

               Repository.repo_id)) \

        .join((Permission, UserGroupRepoToPerm.permission_id ==

               Permission.permission_id)) \

        .join((UserGroup, UserGroupRepoToPerm.users_group_id ==

               UserGroup.users_group_id)) \

        .filter(UserGroup.users_group_active == True) \

        .join((UserGroupMember, UserGroupRepoToPerm.users_group_id ==

               UserGroupMember.users_group_id)) \

        .filter(UserGroupMember.user_id == user_id) \

        .all()

    multiple_counter = collections.defaultdict(int)

    for perm in user_repo_perms_from_users_groups:

        r_k = perm.UserGroupRepoToPerm.repository.repo_name

        multiple_counter[r_k] += 1

        p = perm.Permission.permission_name

        cur_perm = permissions[RK][r_k]

            # set admin if owner

            p = 'repository.admin'

        else:

            if multiple_counter[r_k] > 1:

                p = _choose_perm(p, cur_perm)

        permissions[RK][r_k] = p

    # user explicit permissions for repositories, overrides any specified

    # by the group permission

    user_repo_perms = Permission.get_default_perms(user_id)

    for perm in user_repo_perms:

        r_k = perm.UserRepoToPerm.repository.repo_name

        cur_perm = permissions[RK][r_k]

        # set admin if owner

            p = 'repository.admin'

        else:

            p = perm.Permission.permission_name

            if not explicit:

                p = _choose_perm(p, cur_perm)

        permissions[RK][r_k] = p

    #======================================================================

    # !! PERMISSIONS FOR REPOSITORY GROUPS !!

    #======================================================================

    #======================================================================

    # check if user is part of user groups for this repository groups and

    # fill in his permission from it. _choose_perm decides of which

    # permission should be selected based on selected method

    #======================================================================

    # user group for repo groups permissions

    user_repo_group_perms_from_users_groups = \

     Session().query(UserGroupRepoGroupToPerm, Permission, RepoGroup) \

     .join((RepoGroup, UserGroupRepoGroupToPerm.group_id == RepoGroup.group_id)) \

     .join((Permission, UserGroupRepoGroupToPerm.permission_id

            == Permission.permission_id)) \

     .join((UserGroup, UserGroupRepoGroupToPerm.users_group_id ==

            UserGroup.users_group_id)) \

     .filter(UserGroup.users_group_active == True) \

        locked_by = User.get(ex.locked_by[0]).username

        _http_ret = HTTPLockedRC(ex.repository, locked_by)

        if str(_http_ret.code).startswith('2'):

            #2xx Codes don't raise exceptions

            ui.status(safe_str(_http_ret.title))

    return 0

def log_create_repository(repository_dict, created_by, **kwargs):

    """

    Post create repository Hook.

    :param repository: dict dump of repository object

    :param created_by: username who created repository

    available keys of repository_dict:

     'repo_type',

     'description',

     'private',

     'created_on',

     'enable_downloads',

     'repo_id',

     'enable_statistics',

     'clone_uri',

     'fork_id',

     'group_id',

     'repo_name'

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'CREATE_REPO_HOOK', None)

    if callable(callback):

        kw = {}

        kw.update(repository_dict)

        kw.update({'created_by': created_by})

        kw.update(kwargs)

        return callback(**kw)

    return 0

def check_allowed_create_user(user_dict, created_by, **kwargs):

    # pre create hooks

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'PRE_CREATE_USER_HOOK', None)

    if callable(callback):

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'CREATE_USER_HOOK', None)

    if callable(callback):

        return callback(created_by=created_by, **user_dict)

    return 0

def log_delete_repository(repository_dict, deleted_by, **kwargs):

    """

    Post delete repository Hook.

    :param repository: dict dump of repository object

    :param deleted_by: username who deleted the repository

    available keys of repository_dict:

     'repo_type',

     'description',

     'private',

     'created_on',

     'enable_downloads',

     'repo_id',

     'enable_statistics',

     'clone_uri',

     'fork_id',

     'group_id',

     'repo_name'

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'DELETE_REPO_HOOK', None)

    if callable(callback):

        kw = {}

        kw.update(repository_dict)

        kw.update({'deleted_by': deleted_by,

                   'deleted_on': time.time()})

        kw.update(kwargs)

        return callback(**kw)

    return 0

def log_delete_user(user_dict, deleted_by, **kwargs):

    """

    Post delete user Hook.

    """

    sa = meta.Session()

    groups = path.split(Repository.url_sep())

    parent = None

    group = None

    # last element is repo in nested groups structure

    groups = groups[:-1]

    rgm = RepoGroupModel(sa)

    owner = User.get_first_admin()

    for lvl, group_name in enumerate(groups):

        group_name = u'/'.join(groups[:lvl] + [group_name])

        group = RepoGroup.get_by_group_name(group_name)

        desc = '%s group' % group_name

        # skip folders that are now removed repos

        if REMOVED_REPO_PAT.match(group_name):

            break

        if group is None:

            log.debug('creating group level: %s group_name: %s',

                      lvl, group_name)

            group = RepoGroup(group_name, parent)

            group.group_description = desc

            sa.add(group)

            perm_obj = rgm._create_default_perms(group)

            sa.add(perm_obj)

            sa.flush()

        parent = group

    return group

def repo2db_mapper(initial_repo_list, remove_obsolete=False,

                   install_git_hooks=False, user=None, overwrite_git_hooks=False):

    """

    maps all repos given in initial_repo_list, non existing repositories

    are created, if remove_obsolete is True it also check for db entries

    that are not in initial_repo_list and removes them.

    :param initial_repo_list: list of repositories found by scanning methods

    :param remove_obsolete: check for obsolete entries in database

    :param install_git_hooks: if this is True, also check and install git hook

        for a repo if missing

    :param overwrite_git_hooks: if this is True, overwrite any existing git hooks

        that may be encountered (even if user-deployed)

    """

    from kallithea.model.repo import RepoModel

            notification_type = Notification.TYPE_CHANGESET_COMMENT

            cs = repo.scm_instance.get_changeset(revision)

            desc = cs.short_id