261 lines
9.5 KiB
Python
261 lines
9.5 KiB
Python
# combo - content management system
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# Copyright (C) 2016 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import datetime
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import json
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import os
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import shutil
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import zipfile
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from django.core.files.storage import default_storage
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from django.utils.translation import ugettext as _
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import ckeditor
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import ckeditor.views
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from combo.data.models import CellBase, LinkCell, FeedCell, Page
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from .models import MomoIconCell, MomoOptions
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class GenerationError(Exception):
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pass
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class GenerationInfo(Exception):
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pass
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def render_cell(cell, context):
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classnames = ['cell', cell.css_class_names]
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if cell.slug:
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classnames.append(cell.slug)
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return '<div class="%s">%s</div>' % (' '.join(classnames), cell.render(context))
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def get_page_dict(request, page, manifest):
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cells = [x for x in CellBase.get_cells(page_id=page.id) if x.placeholder != 'footer']
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page_dict = {
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'title': page.title,
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'id': 'page-%s-%s' % (page.slug, page.id),
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}
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link_cells = [x for x in cells if isinstance(x, LinkCell)]
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icon_cells = [x for x in cells if isinstance(x, MomoIconCell)]
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feed_cells = [x for x in cells if isinstance(x, FeedCell)]
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cells = [x for x in cells if not (isinstance(x, LinkCell) or isinstance(x, FeedCell))]
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if cells:
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context = {
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'synchronous': True,
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'page': page,
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'page_cells': cells,
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'request': request,
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'site_base': request.build_absolute_uri('/')[:-1],
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}
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page_dict['content'] = '\n'.join([render_cell(cell, context) for cell in cells])
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if link_cells:
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page_dict['seealso'] = []
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for cell in link_cells:
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if cell.link_page:
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# internal link
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page_dict['seealso'].append('page-%s-%s' %
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(cell.link_page.slug, cell.link_page.id))
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else:
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# external link
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page_dict['seealso'].append('seealso-%s' % cell.id)
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manifest['_pages'].append({
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'title': cell.title,
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'external': True,
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'url': cell.url,
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'id': 'seealso-%s' % cell.id})
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if page.redirect_url:
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page_dict['external'] = True
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page_dict['url'] = page.get_redirect_url()
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if icon_cells:
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page_dict['icon'] = icon_cells[0].icon
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page_dict['style'] = icon_cells[0].style
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page_dict['description'] = icon_cells[0].description
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if page_dict.get('external') and icon_cells[0].embed_page:
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page_dict['external'] = False
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if page.slug == 'index' and page.parent_id is None: # home
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children = page.get_siblings()[1:]
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else:
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children = page.get_children()
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if children:
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page_dict['pages'] = []
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for child in children:
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page_dict['pages'].append(get_page_dict(request, child, manifest))
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if feed_cells:
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if not 'pages' in page_dict:
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page_dict['pages'] = []
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# turn feed entries in external pages
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for feed_cell in feed_cells:
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feed_context = feed_cell.get_cell_extra_context({})
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if feed_context.get('feed'):
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for entry in feed_context.get('feed').entries:
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feed_entry_page = {
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'title': entry.title,
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'id': 'feed-entry-%s-%s' % (feed_cell.id, entry.id),
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'url': entry.link,
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'external': True,
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}
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if entry.description:
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feed_entry_page['description'] = entry.description
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page_dict['pages'].append(feed_entry_page)
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return page_dict
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def generate_manifest(request):
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if not default_storage.exists('assets-base.zip'):
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raise GenerationError(_('Missing base assets file'))
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manifest = {
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'menu': [],
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'_pages': []
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}
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level0_pages = Page.objects.filter(parent=None)
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# the application hierarchy is structured that way:
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# - the home screen is the homepage
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# - the application pages are created from the homepage siblings and their
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# children
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# - the application menu is created from direct children of the homepage
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try:
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homepage = Page.objects.get(slug='index', parent_id=None)
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except Page.DoesNotExist:
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raise GenerationError(_('The homepage needs to be created first.'))
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manifest.update(get_page_dict(request, homepage, manifest))
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# footer
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footer_cells = CellBase.get_cells(page_id=homepage.id, placeholder='footer')
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if footer_cells:
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context = {
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'synchronous': True,
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'page': homepage,
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'page_cells': footer_cells,
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'request': request,
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'site_base': request.build_absolute_uri('/')[:-1],
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}
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manifest['footer'] = '\n'.join([
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'<div id="footer-%s">%s</div>' % (cell.slug, cell.render(context)) for cell in footer_cells])
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# construct the application menu
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manifest['menu'].append('home') # link to home screen
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# add real homepage children
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menu_children = homepage.get_children()
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for menu_child in menu_children:
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link_cells = LinkCell.objects.filter(page_id=menu_child.id)
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if link_cells:
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# use link info instead of redirect url
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link_cell = link_cells[0]
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if link_cell.link_page: # internal link
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menu_id = 'page-%s-%s' % (link_cell.link_page.slug, link_cell.link_page.id)
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else:
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menu_id = 'menu-%s-%s' % (menu_child.slug, menu_child.id)
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link_context = link_cell.get_cell_extra_context({})
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manifest['_pages'].append({
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'title': link_context['title'],
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'external': True,
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'url': link_context['url'],
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'id': menu_id,
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})
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else:
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menu_id = 'menu-%s-%s' % (menu_child.slug, menu_child.id)
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manifest['_pages'].append({
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'title': menu_child.title,
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'external': True,
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'url': menu_child.redirect_url,
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'id': menu_id,
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})
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manifest['menu'].append(menu_id)
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# last item, application refresh
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manifest['menu'].append({
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'icon': 'fa-refresh',
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'id': 'momo-update',
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'title': _('Update Application')})
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options = MomoOptions.get_object()
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manifest['meta'] = {
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'title': options.title or homepage.title,
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'icon': 'icon.png',
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'contact': options.contact_email or 'info@entrouvert.com',
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'updateFreq': options.update_freq or 86400,
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'manifestUrl': request.build_absolute_uri(default_storage.url('index.json')),
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'assetsUrl': request.build_absolute_uri(default_storage.url('assets.zip')),
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'stylesheets': ["assets/index.css"],
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}
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if options.extra_css:
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manifest['meta']['stylesheets'].append('assets/%s' % options.extra_css)
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if options.icons_on_homepage:
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manifest['display'] = 'icons'
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current_manifest = None
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if default_storage.exists('index.json'):
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with default_storage.open('index.json', mode='r') as fp:
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current_manifest = fp.read()
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new_manifest = json.dumps(manifest, indent=2)
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if new_manifest != current_manifest:
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with default_storage.open('index.json', mode='w') as fp:
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fp.write(new_manifest)
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else:
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raise GenerationInfo(_('No changes were detected.'))
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# assets.zip
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if default_storage.exists('assets.zip'):
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zf = zipfile.ZipFile(default_storage.open('assets.zip'))
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existing_files = set([x for x in zf.namelist() if x[0] != '/' and x[-1] != '/'])
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zf.close()
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assets_mtime = default_storage.modified_time('assets.zip')
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else:
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existing_files = set([])
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assets_mtime = datetime.datetime(2015, 1, 1)
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ckeditor_filenames = set(ckeditor.views.get_image_files())
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media_ckeditor_filenames = set(['media/' + x for x in ckeditor_filenames])
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if not media_ckeditor_filenames.issubset(existing_files) or default_storage.modified_time('assets-base.zip') > assets_mtime:
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# if there are new files, or if the base assets file changed, we
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# generate a new assets.zip
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shutil.copy(default_storage.path('assets-base.zip'),
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default_storage.path('assets.zip.tmp'))
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zf = zipfile.ZipFile(default_storage.path('assets.zip.tmp'), 'a')
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for filename in ckeditor_filenames:
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zf.write(default_storage.path(filename), 'media/' + filename)
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zf.close()
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if os.path.exists(default_storage.path('assets.zip')):
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os.unlink(default_storage.path('assets.zip'))
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os.rename(default_storage.path('assets.zip.tmp'), default_storage.path('assets.zip'))
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raise GenerationInfo(_('A new update (including new assets) has been generated.'))
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else:
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raise GenerationInfo(_('A new update has been generated.'))
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