from odoo import models, api


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

    @api.multi
    def _send(self, auto_commit=False, raise_exception=False, smtp_session=None):
        plain_text = (
            '<div summary="o_mail_notification" style="padding: 0px; '
            'font-size: 10px;"><b>CC</b>: %s<hr style="background-color:'
            'rgb(204,204,204);border:medium none;clear:both;display:block;'
            'font-size:0px;min-height:1px;line-height:0; margin:4px 0 12px 0;"></div>'
        )
        group_portal = self.env.ref('base.group_portal')
        for mail_id in self.ids:
            mail = self.browse(mail_id)
            # if the email has a model, id and it belongs to the portal group
            if mail.model and mail.res_id and group_portal:
                obj = self.env[mail.model].browse(mail.res_id)
                # those partners are obtained, who do not have a user and
                # if they do it must be a portal, we exclude internal
                # users of the system.
                if hasattr(obj, "message_follower_ids"):
                    partners_obj = obj.message_follower_ids.mapped('partner_id')
                    # internal partners
                    user_partner_ids = self.env['res.users'].search([
                        ('active', 'in', (True, False)),
                        ('show_in_cc', '=', False),
                    ]).filtered(
                        lambda x: group_portal not in x.groups_id
                    ).mapped('partner_id').ids
                    partners_len = len(partners_obj.filtered(
                        lambda x: x.id not in user_partner_ids and (
                            not x.user_ids or group_portal in x.user_ids.groups_id
                        )))
                    if partners_len > 1:
                        # get partners
                        cc_internal = True
                        # else get company in object
                        if hasattr(obj, "company_id") and obj.company_id:
                            cc_internal = obj.company_id.show_internal_users_cc
                        # get company in user
                        elif mail.env and mail.env.user and mail.env.user.company_id:
                            cc_internal = self.env.user.company_id.\
                                show_internal_users_cc
                        if cc_internal:
                            partners = partners_obj.filtered(
                                lambda x: x.id not in user_partner_ids and (
                                    not x.user_ids or x.user_ids.show_in_cc
                                )
                            )
                        else:
                            partners = partners_obj.filtered(
                                lambda x: x.id not in user_partner_ids and (
                                    not x.user_ids or group_portal in
                                    x.user_ids.groups_id
                                )
                            )
                        partners = partners.filtered(
                            lambda x:
                            not x.user_ids
                            or
                            # otherwise, email is not sent
                            x.user_ids and "email" in x.user_ids.mapped(
                                "notification_type")
                        )
                        # get names and emails
                        final_cc = None
                        mails = ""
                        for p in partners:
                            mails += "%s &lt;%s&gt;, " % (p.name, p.email)
                        # join texts
                        final_cc = plain_text % (mails[:-2])
                        # it is saved in the body_html field so that it does
                        # not appear in the odoo log
                        mail.body_html = final_cc + mail.body_html
        return super(MailMail, self)._send(
            auto_commit=auto_commit, raise_exception=raise_exception,
            smtp_session=smtp_session
        )