Sunil Mohan Adapa b96d901071
Introduce component architecture and menu component
- Introduce base class for all apps that will contain components. With
  unittests.

- Introduce base classes for components. With unittests.

- Turn Menu class into an app component.

  - Further cleanup Menu class.

  - Update tests.

  - Maintain a global list of menu items and look them up easily. Generalize
    such that subsubmenus can later be merged into Menu class.

  - Cleanup scope of main menu initialization.

  - Use None instead of empty strings for various values. Ensure that
    printing short_description does not show 'None' in output.

  - Use enable/disable instead of promote/demote.

- Use menu component in all apps.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
2019-06-07 11:48:04 -07:00

144 lines
4.8 KiB
Python

#
# This file is part of FreedomBox.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
Help app for FreedomBox.
"""
import mimetypes
import os
from apt.cache import Cache
from django.core.files.base import File
from django.http import Http404, HttpResponse
from django.template.response import TemplateResponse
from django.utils.translation import ugettext as _
from django.utils.translation import ugettext_lazy
from plinth import __version__, actions
from plinth import app as app_module
from plinth import cfg, menu
app = None
class HelpApp(app_module.App):
"""FreedomBox app for showing help."""
def __init__(self):
"""Create components for the app."""
super().__init__()
menu_item = menu.Menu('menu-help', ugettext_lazy('Documentation'),
None, 'fa-book', 'help:index',
parent_url_name='index')
self.add(menu_item)
menu_item = menu.Menu('menu-help-manual', ugettext_lazy('Manual'),
None, 'fa-info-circle', 'help:manual',
parent_url_name='help:index', order=10)
self.add(menu_item)
menu_item = menu.Menu('menu-help-download-manual',
ugettext_lazy('Download Manual'), None,
'fa-download', 'help:download-manual',
parent_url_name='help:index', order=15)
self.add(menu_item)
menu_item = menu.Menu('menu-help-about', ugettext_lazy('About'), None,
'fa-star', 'help:about',
parent_url_name='help:index', order=100)
self.add(menu_item)
def init():
"""Initialize the Help module"""
global app
app = HelpApp()
app.set_enabled(True)
def index(request):
"""Serve the index page"""
return TemplateResponse(request, 'help_index.html',
{'title': _('Documentation and FAQ')})
def about(request):
"""Serve the about page"""
cache = Cache()
freedombox = cache['freedombox']
context = {
'title': _('About {box_name}').format(box_name=_(cfg.box_name)),
'version': __version__,
'new_version': not freedombox.candidate.is_installed,
'os_release': get_os_release()
}
return TemplateResponse(request, 'help_about.html', context)
def manual(request, page='freedombox-manual.part.html'):
"""Serve the manual page from the 'doc' directory"""
try:
page = '{}.part.html'.format(
page) if not page.endswith('html') else page
with open(os.path.join(cfg.doc_dir, page), 'r',
encoding='utf-8') as input_file:
content = input_file.read()
except IOError:
raise Http404
return TemplateResponse(
request, 'help_manual.html', {
'title': _('{box_name} Manual').format(box_name=_(cfg.box_name)),
'content': content
})
def download_manual(request):
"""Serve the PDF version of the manual from the 'doc' directory"""
files = [
os.path.join(cfg.doc_dir, file_name)
for file_name in ['freedombox-manual.pdf.gz', 'freedombox-manual.pdf']
if os.path.isfile(os.path.join(cfg.doc_dir, file_name))
]
if not files:
raise Http404
(content_type, encoding) = mimetypes.guess_type(files[0])
with open(files[0], 'rb') as file_handle:
response = HttpResponse(File(file_handle), content_type=content_type)
if encoding:
response['Content-Encoding'] = encoding
return response
def status_log(request):
"""Serve the last 100 lines of plinth's status log"""
output = actions.superuser_run('help', ['get-logs'])
context = {'num_lines': 100, 'data': output}
return TemplateResponse(request, 'statuslog.html', context)
def get_os_release():
"""Returns the Debian release number and name"""
output = 'Error: Cannot read PRETTY_NAME in /etc/os-release.'
with open('/etc/os-release', 'r') as release_file:
for line in release_file:
if 'PRETTY_NAME=' in line:
line = line.replace('"', '').strip()
line = line.split('=')
output = line[1]
return output