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letter.py
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# -*- coding: utf-8 -*-
# Copyright (C) 2007 Taverne Sylvain <[email protected]>
# Copyright (C) 2010-2011 David Versmisse <[email protected]>
# Copyright (C) 2011 Henry Obein <[email protected]>
#
# 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, 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Import from the Standard Library
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.Utils import formatdate
from email.header import Header
# Import from itools
from itools.core import merge_dicts
from itools.datatypes import Boolean, Integer, Email
from itools.gettext import MSG
from itools.html import HTMLParser
from itools.stl import set_prefix, stl
# Import from Newsletter
from mail import EmailResource
from letter_views import MailingLetterNewInstance, MailingLetterView
email_text_template = MSG("""
To see this news in your browser, please follow this link:
{newsletter_uri}
======================================================
{email_text}
======================================================
Click here to unsubscribe:
{unsubscribe_uri}
""")
class MailingLetter(EmailResource):
class_id = 'mailing-letter'
class_title = MSG(u'Mailing Letter')
class_description = MSG(u'Send a newsletter to your customers or '
u'visitors ...')
class_schema = merge_dicts(EmailResource.class_schema,
is_sent=Boolean(source='metadata'),
number=Integer(source='metadata'),
email=Email(source='metadata'))
__fixed_handlers__ = ['mail']
class_views = ['view', 'edit', 'download']
new_instance = MailingLetterNewInstance()
view = MailingLetterView()
def init_resource(self, **kw):
self.set_property('state', 'public')
def get_newsletter_uri(self, context):
unsub_uri = context.get_link(self)
unsub_uri = str(context.uri.resolve(unsub_uri))
return '%s/;download' % unsub_uri
def get_unsubscribe_uri(self, context):
unsub_uri = context.get_link(self.parent)
unsub_uri = str(context.uri.resolve(unsub_uri))
return '%s/;subscribe' % unsub_uri
def get_email_text(self, context):
data = email_text_template.gettext(
newsletter_uri=self.get_newsletter_uri(context),
unsubscribe_uri=self.get_unsubscribe_uri(context),
email_text=self.get_property('email_text'))
return data.encode('utf-8')
def get_email_html(self, context, web_version=False):
header = []
if web_version is False:
header = MSG(u"""
<center>
<span style="font-size:10px;font-weight:bold;
font-family:Arial,Helvetica,sans-serif;">
<a href="{page_uri}" target="_blank">Click here</a>
to see this news on you browser
</span>
</center>
""").gettext(page_uri=self.get_newsletter_uri(context))
header = HTMLParser(header.encode('utf-8'))
footer = MSG(u"""
<center>
<span style="font-size:10px;font-weight:bold;
font-family:Arial,Helvetica,sans-serif;">
<a href="{unsub_uri}" target="_blank">Click here</a>
to unsubscribe
</span>
</center>
""").gettext(unsub_uri=self.get_unsubscribe_uri(context))
footer = HTMLParser(footer.encode('utf-8'))
handler = self.handler
body = handler.get_body()
events = (handler.events[:body.start + 1]
+ header
+ handler.events[body.start + 1:body.end]
+ footer
+ handler.events[body.end:])
# Rewrite link with scheme and autority
prefix = self.get_site_root().get_pathto(self)
html_data = set_prefix(events, prefix='%s/' % prefix, uri=context.uri)
html_data = stl(events=html_data, mode='xhtml')
return html_data
def _make_message(self, from_addr, to_addr, subject, text, html):
message = MIMEMultipart('related')
message['Subject'] = Header(subject, 'utf-8')
message['Date'] = formatdate(localtime=True)
message['From'] = from_addr
message['To'] = to_addr
message['Precedence'] = 'bulk'
message['List-Unsubscribe'] = '<mailto:%s>' % from_addr
message_html = MIMEText(html, 'html', _charset='utf-8')
message_text = MIMEText(text, _charset='utf-8')
message_alternative = MIMEMultipart('alternative')
message.attach(message_alternative)
message_alternative.attach(message_text)
message_alternative.attach(message_html)
return message
def send(self, context):
server = context.server
# Users
users = self.parent.get_subscribed_users()
if not users:
return
# Prepare the last infos
from_addr = self.parent.get_property('sender')
subject = self.get_email_subject(context)
text = self.get_email_text(context)
html = self.get_email_html(context)
# Save the emails in the spool
number = 0
for username in users:
user = context.root.get_user(username)
if user:
number += 1
mail = user.get_property('email')
message = self._make_message(from_addr, mail, subject, text,
html)
server.save_email(message)
# And send the messages
server.flush_spool()
# Stats
self.set_property('number', number)
self.set_property('is_sent', True)