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

from odoo.fields import Command
from odoo.tests import tagged

from odoo.addons.product.tests.common import ProductCommon


@tagged('post_install', '-at_install')
class TestPricelist(ProductCommon):

    @classmethod
    def setUpClass(cls):
        super().setUpClass()

        cls.datacard = cls.env['product.product'].create({'name': 'Office Lamp'})
        cls.usb_adapter = cls.env['product.product'].create({'name': 'Office Chair'})

        cls.sale_pricelist_id = cls.env['product.pricelist'].create({
            'name': 'Sale pricelist',
            'item_ids': [
                Command.create({
                    'compute_price': 'formula',
                    'base': 'list_price',  # based on public price
                    'price_discount': 10,
                    'product_id': cls.usb_adapter.id,
                    'applied_on': '0_product_variant',
                }),
                Command.create({
                    'compute_price': 'formula',
                    'base': 'list_price',  # based on public price
                    'price_surcharge': -0.5,
                    'product_id': cls.datacard.id,
                    'applied_on': '0_product_variant',
                }),
            ],
        })

    def test_10_discount(self):
        # Make sure the price using a pricelist is the same than without after
        # applying the computation manually

        self.assertEqual(
            self.pricelist._get_product_price(self.usb_adapter, 1.0)*0.9,
            self.sale_pricelist_id._get_product_price(self.usb_adapter, 1.0))

        self.assertEqual(
            self.pricelist._get_product_price(self.datacard, 1.0)-0.5,
            self.sale_pricelist_id._get_product_price(self.datacard, 1.0))

        self.assertAlmostEqual(
            self.sale_pricelist_id._get_product_price(self.usb_adapter, 1.0, uom=self.uom_unit)*12,
            self.sale_pricelist_id._get_product_price(self.usb_adapter, 1.0, uom=self.uom_dozen))

        # price_surcharge applies to product default UoM, here "Units", so surcharge will be multiplied
        self.assertAlmostEqual(
            self.sale_pricelist_id._get_product_price(self.datacard, 1.0, uom=self.uom_unit)*12,
            self.sale_pricelist_id._get_product_price(self.datacard, 1.0, uom=self.uom_dozen))

    def test_20_pricelist_uom(self):
        # Verify that the pricelist rules are correctly using the product's default UoM
        # as reference, and return a result according to the target UoM (as specific in the context)

        tonne_price = 100

        # make sure 'tonne' resolves down to 1 'kg'.
        self.uom_ton.write({'rounding': 0.001})
        # setup product stored in 'tonnes', with a discounted pricelist for qty > 3 tonnes
        spam = self.env['product.product'].create({
            'name': '1 tonne of spam',
            'uom_id': self.uom_ton.id,
            'uom_po_id': self.uom_ton.id,
            'list_price': tonne_price,
            'type': 'consu'
        })

        self.env['product.pricelist.item'].create({
            'pricelist_id': self.pricelist.id,
            'applied_on': '0_product_variant',
            'compute_price': 'formula',
            'base': 'list_price',  # based on public price
            'min_quantity': 3,  # min = 3 tonnes
            'price_surcharge': -10,  # -10 EUR / tonne
            'product_id': spam.id
        })

        def test_unit_price(qty, uom_id, expected_unit_price):
            uom = self.env['uom.uom'].browse(uom_id)
            unit_price = self.pricelist._get_product_price(spam, qty, uom=uom)
            self.assertAlmostEqual(unit_price, expected_unit_price, msg='Computed unit price is wrong')

        # Test prices - they are *per unit*, the quantity is only here to match the pricelist rules!
        test_unit_price(2, self.uom_kgm.id, tonne_price / 1000.0)
        test_unit_price(2000, self.uom_kgm.id, tonne_price / 1000.0)
        test_unit_price(3500, self.uom_kgm.id, (tonne_price - 10) / 1000.0)
        test_unit_price(2, self.uom_ton.id, tonne_price)
        test_unit_price(3, self.uom_ton.id, tonne_price - 10)
