"""Coexistence group membership recomputation."""

from odoo import api, models


class ResUsers(models.Model):
    _inherit = "res.users"

    @api.model
    def _fusion_recompute_coexistence_group(self):
        """Set group membership = all internal users iff Enterprise absent.

        Called from ir.module.module.button_immediate_install / uninstall
        overrides. Idempotent; safe to call multiple times.
        """
        group = self.env.ref(
            'fusion_accounting_core.group_fusion_show_when_enterprise_absent',
            raise_if_not_found=False,
        )
        if not group:
            return
        enterprise_installed = self.env['ir.module.module']._fusion_is_enterprise_accounting_installed()
        if enterprise_installed:
            group.sudo().write({'user_ids': [(5, 0, 0)]})
        else:
            all_internal = self.sudo().search([('share', '=', False)])
            group.sudo().write({'user_ids': [(6, 0, all_internal.ids)]})