# repos controller for pylons

# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>

#

# 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; version 2

# of the License or (at your opinion) any later version of the license.

# 

# 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, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

# MA  02110-1301, USA.

"""

Created on April 7, 2010

admin controller for pylons

@author: marcink

"""

from formencode import htmlfill

from operator import itemgetter

from pylons import request, response, session, tmpl_context as c, url

from pylons.controllers.util import abort, redirect

from pylons.i18n.translation import _

from pylons_app.lib import helpers as h

from pylons_app.lib.auth import LoginRequired, HasPermissionAllDecorator

from pylons_app.lib.base import BaseController, render

from pylons_app.lib.utils import invalidate_cache

from pylons_app.model.forms import RepoForm

from pylons_app.model.hg_model import HgModel

from pylons_app.model.repo_model import RepoModel

import formencode

import logging

import traceback

log = logging.getLogger(__name__)

class ReposController(BaseController):

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

    # To properly map this controller, ensure your config/routing.py

    # file has a resource setup:

    #     map.resource('repo', 'repos')

    @LoginRequired()

    @HasPermissionAllDecorator('hg.admin')

    def __before__(self):

        c.admin_user = session.get('admin_user')

        c.admin_username = session.get('admin_username')

        super(ReposController, self).__before__()

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

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

        # url('repos')

        cached_repo_list = HgModel().get_repos()

        c.repos_list = sorted(cached_repo_list, key=itemgetter('name_sort'))

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

    def create(self):

            repo_model.delete_perm_user(request.POST, repo_name)            

        except Exception as e:

            h.flash(_('An error occured during deletion of repository user'),

                    category='error')

            raise HTTPInternalServerError()

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

        """GET /repos/repo_name: Show a specific item"""

        # url('repo', repo_name=ID)

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

        """GET /repos/repo_name/edit: Form to edit an existing item"""

        # url('edit_repo', repo_name=ID)

        repo_model = RepoModel()

        c.repo_info = repo = repo_model.get(repo_name)

        if not repo:

            h.flash(_('%s repository is not mapped to db perhaps' 

                      ' it was created or renamed from the filesystem'

                      ' please run the application again'

                      ' in order to rescan repositories') % repo_name,

                      category='error')

            return redirect(url('repos'))        

        defaults = c.repo_info.__dict__

        c.users_array = repo_model.get_users_js()

        for p in c.repo_info.repo2perm:

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

                             p.permission.permission_name})

        return htmlfill.render(

            render('admin/repos/repo_edit.html'),

            defaults=defaults,

            encoding="UTF-8",

            force_defaults=False

        )          

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; version 2

# of the License or (at your opinion) any later version of the license.

# 

# 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, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

# MA  02110-1301, USA.

"""

Created on April 9, 2010

Model for hg app

@author: marcink

"""

from beaker.cache import cache_region

from mercurial import ui

from mercurial.hgweb.hgwebdir_mod import findrepos

from pylons.i18n.translation import _

from pylons_app.lib.auth import HasRepoPermissionAny

from pylons_app.model import meta

from sqlalchemy.orm import joinedload

from vcs.exceptions import RepositoryError, VCSError

import logging

import os

import sys

log = logging.getLogger(__name__)

try:

    from vcs.backends.hg import MercurialRepository

except ImportError:

    sys.stderr.write('You have to import vcs module')

    raise Exception('Unable to import vcs')

def _get_repos_cached_initial(app_globals, initial):

    """

    return cached dict with repos

    """

    g = app_globals

    return HgModel.repo_scan(g.paths[0][0], g.paths[0][1], g.baseui, initial)

@cache_region('long_term', 'cached_repo_list')

def _get_repos_cached():

    """

    return cached dict with repos

        if not isinstance(baseui, ui.ui):

            baseui = ui.ui()

        repos_list = {}

        for name, path in repos:

            try:

                #name = name.split('/')[-1]

                if repos_list.has_key(name):

                    raise RepositoryError('Duplicate repository name %s found in'

                                    ' %s' % (name, path))

                else:

                    repos_list[name] = MercurialRepository(path, baseui=baseui)

                    repos_list[name].name = name

                    dbrepo = None

                    if not initial:

                        dbrepo = sa.query(Repository)\

                            .filter(Repository.repo_name == name).scalar()

                    if dbrepo:

                        log.info('Adding db instance to cached list')

                        repos_list[name].dbrepo = dbrepo

                        repos_list[name].description = dbrepo.description

            except OSError:

                continue

        meta.Session.remove()

        return repos_list

    def get_repos(self):

        for name, repo in _get_repos_cached().items():

            if repo._get_hidden():

                #skip hidden web repository

                continue

            last_change = repo.last_change

            try:

                tip = repo.get_changeset('tip')

            except RepositoryError:

                from pylons_app.lib.utils import EmptyChangeset

                tip = EmptyChangeset()

            tmp_d = {}

            tmp_d['name'] = repo.name

            tmp_d['name_sort'] = tmp_d['name'].lower()

            tmp_d['description'] = repo.description

            tmp_d['description_sort'] = tmp_d['description']

            tmp_d['last_change'] = last_change