# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import models


class MailMessage(models.Model):
    _inherit = 'mail.message'

    def _message_format(self, fnames, format_reply=True):
        """Override to remove email_from and to return the livechat username if applicable.
        A third param is added to the author_id tuple in this case to be able to differentiate it
        from the normal name in client code."""
        vals_list = super()._message_format(fnames=fnames, format_reply=format_reply)
        for vals in vals_list:
            message_sudo = self.browse(vals['id']).sudo().with_prefetch(self.ids)
            if message_sudo.model == 'mail.channel' and self.env['mail.channel'].browse(message_sudo.res_id).channel_type == 'livechat':
                vals.pop('email_from')
                if message_sudo.author_id.user_livechat_username:
                    vals['author_id'] = (message_sudo.author_id.id, message_sudo.author_id.user_livechat_username, message_sudo.author_id.user_livechat_username)
        return vals_list