# -*- coding: utf-8 -*-
from odoo.tests import TransactionCase, tagged
from odoo.fields import Date

@tagged('post_install', '-at_install', 'repro_bug')
class TestNoRevaluation(TransactionCase):

    def setUp(self):
        super().setUp()
        self.env.company.currency_id = self.env.ref('base.USD')
        
        # Create a product with automated valuation (AVCO)
        self.product_category = self.env['product.category'].create({
            'name': 'Test Auto Valuation',
            'property_cost_method': 'average',
            'property_valuation': 'real_time',
        })
        self.product = self.env['product.product'].create({
            'name': 'Test Product',
            'type': 'consu',
            'is_storable': True,
            'categ_id': self.product_category.id,
            'standard_price': 100.0,
        })
        
        # Create a vendor
        self.vendor = self.env['res.partner'].create({'name': 'Test Vendor'})

    def test_no_revaluation_on_bill_edit(self):
        """
        Verify that editing a vendor bill line price does NOT trigger 
        inventory revaluation (SVL creation) or accounting entries.
        """
        # 1. Create and Confirm PO
        po = self.env['purchase.order'].create({
            'partner_id': self.vendor.id,
            'order_line': [(0, 0, {
                'product_id': self.product.id,
                'product_qty': 10.0,
                'price_unit': 100.0,
            })],
        })
        po.button_confirm()
        
        # 2. Receive Products
        picking = po.picking_ids[0]
        picking.button_validate()
        
        # Verify initial SVL
        svls = self.env['stock.valuation.layer'].search([('product_id', '=', self.product.id)])
        self.assertEqual(len(svls), 1, "Should be 1 SVL for reception")
        initial_svl_count = len(svls)
        
        # 3. Create Vendor Bill
        action = po.action_create_invoice()
        bill = self.env['account.move'].browse(action['res_id'])
        bill.invoice_date = Date.today()
        
        # 4. Edit Vendor Bill Line Price (Simulate User Edit)
        # Change price from 100 to 120
        # This triggers the write method on account.move.line
        line = bill.invoice_line_ids[0]
        line.price_unit = 120.0 # This triggers the write method
        
        # 5. Verify NO new SVL created
        new_svls = self.env['stock.valuation.layer'].search([('product_id', '=', self.product.id)])
        self.assertEqual(len(new_svls), initial_svl_count, "No new SVL should be created after bill edit")
        
        # Verify standard price did NOT change (since no revaluation)
        # Note: If revaluation logic was present, it would update standard_price
        # However, since we expect NO revaluation, standard price might stay same or move based on other logic? 
        # The key is checking SVL count.