Mercurial > libervia-web
view libervia_server/blog.py @ 389:2d782349b88a
server_side: display blog comments when you click on a main item header or title
| author | souliane <souliane@mailoo.org> |
|---|---|
| date | Tue, 25 Feb 2014 17:50:47 +0100 |
| parents | 893451e35686 |
| children | 35a43d0dc032 |
line wrap: on
line source
#!/usr/bin/python # -*- coding: utf-8 -*- # Libervia: a Salut à Toi frontend # Copyright (C) 2011, 2012, 2013, 2014 Jérôme Poisson <goffi@goffi.org> # 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/>. from sat.core.i18n import _ from sat_frontends.tools.strings import addURLToText from libervia_server.html_tools import sanitizeHtml from twisted.internet import defer from twisted.web import server from twisted.web.resource import Resource from twisted.words.protocols.jabber.jid import JID from datetime import datetime from constants import Const import uuid import re class MicroBlog(Resource): isLeaf = True ERROR_TEMPLATE = """ <html> <head> <title>MICROBLOG ERROR</title> </head> <body> <h1 style='text-align: center; color: red;'>%s</h1> </body> </html> """ def __init__(self, host): self.host = host Resource.__init__(self) if not host.bridge.isConnected("libervia"): # FIXME: hard coded value for test host.bridge.connect("libervia") def render_GET(self, request): if not request.postpath: return MicroBlog.ERROR_TEMPLATE % "You must indicate a nickname" else: prof_requested = request.postpath[0] #TODO: char check: only use alphanumerical chars + some extra(_,-,...) here prof_found = self.host.bridge.getProfileName(prof_requested) if not prof_found or prof_found == 'libervia': return MicroBlog.ERROR_TEMPLATE % "Invalid nickname" else: def got_jid(pub_jid_s): pub_jid = JID(pub_jid_s) d2 = defer.Deferred() item_id = None if len(request.postpath) > 1: if request.postpath[1] == 'atom.xml': # return the atom feed d2.addCallbacks(self.render_atom_feed, self.render_error_blog, [request], None, [request, prof_found], None) self.host.bridge.getLastGroupBlogsAtom(pub_jid.userhost(), 10, 'libervia', d2.callback, d2.errback) return try: # check if the given path is a valid UUID uuid.UUID(request.postpath[1]) item_id = request.postpath[1] except ValueError: pass d2.addCallbacks(self.render_html_blog, self.render_error_blog, [request, prof_found], None, [request, prof_found], None) if item_id: # display one message and its comments self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [item_id], 'libervia', d2.callback, d2.errback) else: # display the last messages without comment self.host.bridge.getLastGroupBlogs(pub_jid.userhost(), 10, 'libervia', d2.callback, d2.errback) d1 = defer.Deferred() JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', Const.SERVER_SECURITY_LIMIT, prof_found, callback=d1.callback, errback=d1.errback)) d1.addCallbacks(got_jid) return server.NOT_DONE_YET def render_html_blog(self, mblog_data, request, profile): """Retrieve the blog banner or other user's specific stuff before actually rendering the static blog @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data) @param request: HTTP request @param profile """ def check_banner(banner): """Regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/""" if re.match(r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$", banner): style = {'banner': banner} else: style = {} self.__render_html_blog(mblog_data, style, request, profile) eb = lambda failure: self.render_error_blog(failure, request, profile) self.host.bridge.asyncGetParamA('Blog banner', 'Misc', 'value', Const.SERVER_SECURITY_LIMIT, profile, callback=check_banner, errback=eb) def __render_html_blog(self, mblog_data, style, request, profile): """Actually render the static blog. If mblog_data is a list of dict, we are missing the comments items so we just display the main items. If mblog_data is a list of couple, each couple is associating a main item data with the list of its comments, so we render all. @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data) @param style: dict defining the blog's rendering parameters @param request: the HTTP request @profile """ if not isinstance(style, dict): style = {} user = sanitizeHtml(profile).encode('utf-8') root_url = '../' * len(request.postpath) base_url = root_url + 'blog/' + user banner = style['banner'].encode('utf-8') if 'banner' in style else '' banner_elt = "<img src='%(banner)s' alt='%(user)s'/>" % {'user': user, 'banner': banner} if banner else user request.write(""" <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/> <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" /> <title>%(user)s's microblog</title> </head> <body> <div class="mblog_title"><a href="%(base)s">%(banner_elt)s</a></div> """ % {'base': base_url, 'root': root_url, 'user': user, 'banner_elt': banner_elt}) mblog_data = [(entry if isinstance(entry, tuple) else (entry, [])) for entry in mblog_data] mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('published', 0)))) for entry in mblog_data: self.__render_html_entry(entry[0], base_url, request) comments = sorted(entry[1], key=lambda entry: (float(entry.get('published', 0)))) for comment in comments: self.__render_html_entry(comment, base_url, request) request.write('</body></html>') request.finish() def __render_html_entry(self, entry, base_url, request): """Render one microblog entry. @param entry: the microblog entry @param base_url: the base url of the blog @param request: the HTTP request """ timestamp = float(entry.get('published', 0)) datetime_ = datetime.fromtimestamp(timestamp) is_comment = entry['type'] == 'comment' if is_comment: author = (_("comment from %s") % entry['author']).encode('utf-8') item_link = '' else: author = ' ' item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8') def getText(key): if ('%s_xhtml' % key) in entry: return entry['%s_xhtml' % key].encode('utf-8') elif key in entry: processor = addURLToText if key.startswith('content') else sanitizeHtml return processor(entry[key]).encode('utf-8') return '' def addMainItemLink(elem): if not item_link or not elem: return elem return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem} header = addMainItemLink("""<div class="mblog_header"> <div class="mblog_metadata"> <div class="mblog_author">%(author)s</div> <div class="mblog_timestamp">%(date)s</div> </div> </div>""" % {'author': author, 'date': datetime_}) title = addMainItemLink(getText('title')) body = getText('content') if title: # insert the title within the body body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body} request.write("""<div class="mblog_entry %(extra_style)s"> %(header)s <span class="mblog_content">%(content)s</span> </div>""" % {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '', 'item_link': item_link, 'header': header, 'content': body}) def render_atom_feed(self, feed, request): request.write(feed.encode('utf-8')) request.finish() def render_error_blog(self, error, request, profile): request.write(MicroBlog.ERROR_TEMPLATE % "Can't access requested data") request.finish()