from odoo import models, fields, api

class PosOrder(models.Model):
    _inherit = 'pos.order'

    is_payment_editable = fields.Boolean(
        compute='_compute_is_payment_editable',
        string='Is Payment Editable'
    )

    @api.depends('session_id.state', 'state', 'account_move', 'payment_ids.account_move_id.state')
    def _compute_is_payment_editable(self):
        is_manager = self.env.user.has_group('point_of_sale.group_pos_manager')
        for order in self:
            # Only POS Managers can edit
            if not is_manager:
                order.is_payment_editable = False
            # 1. POS session must not be closed
            elif order.session_id.state == 'closed':
                order.is_payment_editable = False
            # 2. POS order state must not be done or cancel
            elif order.state in ('done', 'cancel'):
                order.is_payment_editable = False
            # 3. Order must not have a posted invoice
            elif order.account_move and order.account_move.state == 'posted':
                order.is_payment_editable = False
            else:
                # 4. None of the payments must have a posted accounting journal entry (account_move_id)
                is_any_payment_posted = any(
                    p.account_move_id and p.account_move_id.state == 'posted'
                    for p in order.payment_ids
                )
                order.is_payment_editable = not is_any_payment_posted