social/mail_tracking/models/mail_mail.py

# Copyright 2016 Antonio Espinosa - <antonio.espinosa@tecnativa.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

import time
from datetime import datetime
from email.utils import COMMASPACE

from odoo import models, fields


class MailMail(models.Model):
    _inherit = 'mail.mail'

    def _tracking_email_prepare(self, partner, email):
        ts = time.time()
        dt = datetime.utcfromtimestamp(ts)
        email_to_list = email.get('email_to', [])
        email_to = COMMASPACE.join(email_to_list)
        return {
            'name': self.subject,
            'timestamp': '%.6f' % ts,
            'time': fields.Datetime.to_string(dt),
            'mail_id': self.id,
            'mail_message_id': self.mail_message_id.id,
            'partner_id': partner.id if partner else False,
            'recipient': email_to,
            'sender': self.email_from,
        }

    def _send_prepare_values(self, partner=None):
        email = super(MailMail, self)._send_prepare_values(partner=partner)
        vals = self._tracking_email_prepare(partner, email)
        tracking_email = self.env['mail.tracking.email'].sudo().create(vals)
        return tracking_email.tracking_img_add(email)