# -*- coding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2013-Today OpenERP SA (<http://www.openerp.com>)
#
#    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 urlparse import urljoin

from openerp import tools
from openerp import SUPERUSER_ID
from openerp.osv import osv, fields


class MailMail(osv.Model):
    """Add the mass mailing campaign data to mail"""
    _name = 'mail.mail'
    _inherit = ['mail.mail']

    _columns = {
        'track': fields.boolean('Use tracking'),
    }

    _defaults = {
        'track': False,
    }

    def create(self, cr, uid, values, context=None):
        """ Override mail_mail creation to create an entry in mail.mail.statistics """
        # TDE note: should be after 'all values computed', to have values (FIXME after merging other branch holding create refactoring)
        mail_id = super(MailMail, self).create(cr, uid, values, context=context)
        mail = self.browse(cr, SUPERUSER_ID, mail_id)
        if mail.track:
            self.pool['mail.mail.statistics'].create(
                cr, uid, {
                    'mail_mail_id': mail_id,
                    'message_id': mail.message_id,
                }, context=context)
        return mail_id

    def _get_tracking_url(self, cr, uid, mail, partner=None, context=None):
        base_url = self.pool.get('ir.config_parameter').get_param(cr, uid, 'web.base.url')
        track_url = urljoin(base_url, 'mail/track/%d/blank.gif' % mail.id)
        return '<img src="%s" alt=""/>' % track_url

    def send_get_mail_body(self, cr, uid, mail, partner=None, context=None):
        """ Override to add the tracking URL to the body. """
        body = super(MailMail, self).send_get_mail_body(cr, uid, mail, partner=partner, context=context)

        # generate tracking URL
        if mail.track:
            tracking_url = self._get_tracking_url(cr, uid, mail, partner, context=context)
            if tracking_url:
                body = tools.append_content_to_html(body, tracking_url, plaintext=False, container_tag='div')
        return body