# -*- coding: utf-8 -*-
# Copyright 2018 Camptocamp
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
from odoo import models, api


class MailTemplate(models.Model):

    _inherit = 'mail.template'

    @api.multi
    def generate_recipients(self, results, res_ids):
        """Use partner's parent email as recipient.

        Walk up the hierarchy of recipient partners via `parent_id`
        and pick the 1st one having an email.
        """
        results = super(MailTemplate, self).generate_recipients(
            results,
            res_ids
        )
        disabled = self.env.context.get('no_parent_mail_recipient')
        if self.env.user.company_id.use_parent_mail_address and not disabled:
            for res_id, values in results.iteritems():
                partner_ids = values.get('partner_ids', [])
                partners_with_emails = []
                partners = self.env['res.partner'].sudo().browse(partner_ids)
                for partner in partners:
                    if partner.email:
                        partners_with_emails.append(partner.id)
                    elif partner.commercial_partner_id.email:
                        partners_with_emails.append(
                            partner.commercial_partner_id.id
                        )
                    # else:
                    #     partner_with_emails.append(partner.id)
                results[res_id]['partner_ids'] = partners_with_emails
        return results