##############################################################################
#
# Copyright (c) 2002-2006 Nexedi SARL and Contributors. All Rights Reserved.
#                         Jean-Paul Smets-Solanes <jp@nexedi.com>
#                         Kevin Deldycke          <kevin@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
##############################################################################

from Products.ERP5Type.Globals import InitializeClass
from AccessControl import ClassSecurityInfo

from Products.ERP5Type import Permissions, PropertySheet, Constraint, interfaces

from Products.ERP5.Document.Event import Event
import smtplib

from zLOG import LOG

_MARKER = []

class MailMessage(Event):
  """
  LEGACY

  The MailMessage class is deprecated. It is superceded by
  the Event class (for CRM events) and by the EmailDocument class
  (to store raw email messages).

  TODO: compatibility layer is required so that old MailMessage
  instance can mimic Event instances based on legacy data. This
  is required for example for old CRM implementations of ERP5.
  """

  meta_type       = 'ERP5 Mail Message'
  portal_type     = 'Mail Message'
  add_permission  = Permissions.AddPortalContent

  # Declarative security
  security = ClassSecurityInfo()
  security.declareObjectProtected(Permissions.AccessContentsInformation)

  # Declarative properties
  property_sheets = ( PropertySheet.Base
                    , PropertySheet.XMLObject
                    , PropertySheet.DublinCore
                    , PropertySheet.CategoryCore
                    , PropertySheet.Task
                    , PropertySheet.Arrow
                    , PropertySheet.Movement
                    , PropertySheet.Event
                    , PropertySheet.MailMessage
                    )

  def getReplyBody(self):
    """
      This is used in order to respond to a mail,
      this put a '> ' before each line of the body
    """
    reply_body = ''
    body = self.getBody()
    if type(body) is type('a'):
      reply_body = '> ' + body.replace('\n', '\n> ')
    return reply_body

  def getReplySubject(self):
    """
      This is used in order to respond to a mail,
      this put a 'Re: ' before the orignal subject
    """
    reply_subject = self.getTitle()
    if reply_subject.find('Re: ') != 0:
      reply_subject = 'Re: ' + reply_subject
    return reply_subject

  def send(self, from_url=None, to_url=None, msg=None, subject=None):
    """
      Sends a reply to this mail message.
    """
    # We assume by default that we are replying to the sender
    if from_url is None:
      from_url = self.getUrlString()
    if to_url is None:
      to_url = self.getSender()
    if msg is not None and subject is not None:
      header  = "From: %s\n"    % from_url
      header += "To: %s\n\n"    % to_url
      header += "Subject: %s\n" % subject
      header += "\n"
      msg = header + msg
      self.MailHost.send( msg )


  security.declareProtected(Permissions.AccessContentsInformation, 'getTextContent')
  def getTextContent(self, default=_MARKER):
    """
    Overload EmailDocument method to add backward compatibility layer
    """
    if getattr(self, 'body', None) is not None:
      return self.getBody(default)
    else:
      if default is _MARKER:
        return Event.getTextContent(self)
      else:
        return Event.getTextContent(self, default)