from odoo import models, api
from odoo.tools import float_round

class AccountMoveLine(models.Model):
    _inherit = 'account.move.line'

    def _get_hr_expense_base_class(self):
        """ Returns the hr_expense class in the MRO to jump over it. """
        mro = type(self).mro()
        return next((c for c in mro if 'hr_expense' in c.__module__), None)

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get('expense_id') and vals.get('price_unit'):
                # Force rounding on expense-related lines to prevent noise from 10-decimal precision
                currency = self.env['res.currency'].browse(vals.get('currency_id')) or self.env.company.currency_id
                vals['price_unit'] = float_round(vals['price_unit'], precision_digits=currency.decimal_places or 2)
        return super().create(vals_list)

    def write(self, vals):
        # 1. Rounding Logic
        if 'price_unit' in vals:
            for line in self:
                if line.expense_id:
                    currency = line.currency_id or self.env.company.currency_id
                    vals['price_unit'] = float_round(vals['price_unit'], precision_digits=currency.decimal_places or 2)
        
        # 2. Surgical Jumper to bypass hr_expense's account.move.line lock
        hr_expense_class = self._get_hr_expense_base_class()
        if hr_expense_class and self._context.get('skip_expense_lock'):
            return super(hr_expense_class, self).write(vals)

        return super().write(vals)

    def unlink(self):
        # Surgical Jumper to bypass hr_expense's account.move.line lock
        hr_expense_class = self._get_hr_expense_base_class()
        if hr_expense_class and self._context.get('skip_expense_lock'):
            return super(hr_expense_class, self).unlink()
        return super().unlink()