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

import re
from collections import defaultdict

from odoo import api, fields, models, tools, _
from odoo.exceptions import ValidationError
from odoo.osv import expression
from odoo.tools import float_compare


class ProductProduct(models.Model):
    _name = "product.product"
    _description = "Product Variant"
    _inherits = {'product.template': 'product_tmpl_id'}
    _inherit = ['mail.thread', 'mail.activity.mixin']
    _order = 'priority desc, default_code, name, id'

    # price_extra: catalog extra value only, sum of variant extra attributes
    price_extra = fields.Float(
        'Variant Price Extra', compute='_compute_product_price_extra',
        digits='Product Price',
        help="This is the sum of the extra price of all attributes")
    # lst_price: catalog value + extra, context dependent (uom)
    lst_price = fields.Float(
        'Sales Price', compute='_compute_product_lst_price',
        digits='Product Price', inverse='_set_product_lst_price',
        help="The sale price is managed from the product template. Click on the 'Configure Variants' button to set the extra attribute prices.")

    default_code = fields.Char('Internal Reference', index=True)
    code = fields.Char('Reference', compute='_compute_product_code')
    partner_ref = fields.Char('Customer Ref', compute='_compute_partner_ref')

    active = fields.Boolean(
        'Active', default=True,
        help="If unchecked, it will allow you to hide the product without removing it.")
    product_tmpl_id = fields.Many2one(
        'product.template', 'Product Template',
        auto_join=True, index=True, ondelete="cascade", required=True)
    barcode = fields.Char(
        'Barcode', copy=False, index='btree_not_null',
        help="International Article Number used for product identification.")
    product_template_attribute_value_ids = fields.Many2many('product.template.attribute.value', relation='product_variant_combination', string="Attribute Values", ondelete='restrict')
    product_template_variant_value_ids = fields.Many2many('product.template.attribute.value', relation='product_variant_combination',
                                                          domain=[('attribute_line_id.value_count', '>', 1)], string="Variant Values", ondelete='restrict')
    combination_indices = fields.Char(compute='_compute_combination_indices', store=True, index=True)
    is_product_variant = fields.Boolean(compute='_compute_is_product_variant')

    standard_price = fields.Float(
        'Cost', company_dependent=True,
        digits='Product Price',
        groups="base.group_user",
        help="""In Standard Price & AVCO: value of the product (automatically computed in AVCO).
        In FIFO: value of the next unit that will leave the stock (automatically computed).
        Used to value the product when the purchase cost is not known (e.g. inventory adjustment).
        Used to compute margins on sale orders.""")
    volume = fields.Float('Volume', digits='Volume')
    weight = fields.Float('Weight', digits='Stock Weight')

    pricelist_item_count = fields.Integer("Number of price rules", compute="_compute_variant_item_count")

    packaging_ids = fields.One2many(
        'product.packaging', 'product_id', 'Product Packages',
        help="Gives the different ways to package the same product.")

    additional_product_tag_ids = fields.Many2many('product.tag', 'product_tag_product_product_rel')
    all_product_tag_ids = fields.Many2many('product.tag', compute='_compute_all_product_tag_ids', search='_search_all_product_tag_ids')

    # all image fields are base64 encoded and PIL-supported

    # all image_variant fields are technical and should not be displayed to the user
    image_variant_1920 = fields.Image("Variant Image", max_width=1920, max_height=1920)

    # resized fields stored (as attachment) for performance
    image_variant_1024 = fields.Image("Variant Image 1024", related="image_variant_1920", max_width=1024, max_height=1024, store=True)
    image_variant_512 = fields.Image("Variant Image 512", related="image_variant_1920", max_width=512, max_height=512, store=True)
    image_variant_256 = fields.Image("Variant Image 256", related="image_variant_1920", max_width=256, max_height=256, store=True)
    image_variant_128 = fields.Image("Variant Image 128", related="image_variant_1920", max_width=128, max_height=128, store=True)
    can_image_variant_1024_be_zoomed = fields.Boolean("Can Variant Image 1024 be zoomed", compute='_compute_can_image_variant_1024_be_zoomed', store=True)

    # Computed fields that are used to create a fallback to the template if
    # necessary, it's recommended to display those fields to the user.
    image_1920 = fields.Image("Image", compute='_compute_image_1920', inverse='_set_image_1920')
    image_1024 = fields.Image("Image 1024", compute='_compute_image_1024')
    image_512 = fields.Image("Image 512", compute='_compute_image_512')
    image_256 = fields.Image("Image 256", compute='_compute_image_256')
    image_128 = fields.Image("Image 128", compute='_compute_image_128')
    can_image_1024_be_zoomed = fields.Boolean("Can Image 1024 be zoomed", compute='_compute_can_image_1024_be_zoomed')

    @api.depends('image_variant_1920', 'image_variant_1024')
    def _compute_can_image_variant_1024_be_zoomed(self):
        for record in self:
            record.can_image_variant_1024_be_zoomed = record.image_variant_1920 and tools.is_image_size_above(record.image_variant_1920, record.image_variant_1024)

    def _set_template_field(self, template_field, variant_field):
        for record in self:
            if (
                # We are trying to remove a field from the variant even though it is already
                # not set on the variant, remove it from the template instead.
                (not record[template_field] and not record[variant_field])
                # We are trying to add a field to the variant, but the template field is
                # not set, write on the template instead.
                or (record[template_field] and not record.product_tmpl_id[template_field])
                # There is only one variant, always write on the template.
                or self.search_count([
                    ('product_tmpl_id', '=', record.product_tmpl_id.id),
                    ('active', '=', True),
                ]) <= 1
            ):
                record[variant_field] = False
                record.product_tmpl_id[template_field] = record[template_field]
            else:
                record[variant_field] = record[template_field]

    @api.depends("create_date", "write_date", "product_tmpl_id.create_date", "product_tmpl_id.write_date")
    def _compute_concurrency_field(self):
        # Intentionally not calling super() to involve all fields explicitly
        for record in self:
            record[self.CONCURRENCY_CHECK_FIELD] = max(filter(None, (
                record.product_tmpl_id.write_date or record.product_tmpl_id.create_date,
                record.write_date or record.create_date or fields.Datetime.now(),
            )))

    def _compute_image_1920(self):
        """Get the image from the template if no image is set on the variant."""
        for record in self:
            record.image_1920 = record.image_variant_1920 or record.product_tmpl_id.image_1920

    def _set_image_1920(self):
        return self._set_template_field('image_1920', 'image_variant_1920')

    def _compute_image_1024(self):
        """Get the image from the template if no image is set on the variant."""
        for record in self:
            record.image_1024 = record.image_variant_1024 or record.product_tmpl_id.image_1024

    def _compute_image_512(self):
        """Get the image from the template if no image is set on the variant."""
        for record in self:
            record.image_512 = record.image_variant_512 or record.product_tmpl_id.image_512

    def _compute_image_256(self):
        """Get the image from the template if no image is set on the variant."""
        for record in self:
            record.image_256 = record.image_variant_256 or record.product_tmpl_id.image_256

    def _compute_image_128(self):
        """Get the image from the template if no image is set on the variant."""
        for record in self:
            record.image_128 = record.image_variant_128 or record.product_tmpl_id.image_128

    def _compute_can_image_1024_be_zoomed(self):
        """Get the image from the template if no image is set on the variant."""
        for record in self:
            record.can_image_1024_be_zoomed = record.can_image_variant_1024_be_zoomed if record.image_variant_1920 else record.product_tmpl_id.can_image_1024_be_zoomed

    def _get_placeholder_filename(self, field):
        image_fields = ['image_%s' % size for size in [1920, 1024, 512, 256, 128]]
        if field in image_fields:
            return 'product/static/img/placeholder.png'
        return super()._get_placeholder_filename(field)

    def init(self):
        """Ensure there is at most one active variant for each combination.

        There could be no variant for a combination if using dynamic attributes.
        """
        self.env.cr.execute("CREATE UNIQUE INDEX IF NOT EXISTS product_product_combination_unique ON %s (product_tmpl_id, combination_indices) WHERE active is true"
            % self._table)

    @api.constrains('barcode')
    def _check_barcode_uniqueness(self):
        """ With GS1 nomenclature, products and packagings use the same pattern. Therefore, we need
        to ensure the uniqueness between products' barcodes and packagings' ones"""
        all_barcode = [b for b in self.mapped('barcode') if b]
        domain = [('barcode', 'in', all_barcode)]
        matched_products = self.sudo().search(domain, order='id')
        if len(matched_products) > len(all_barcode):  # It means that you find more than `self` -> there are duplicates
            products_by_barcode = defaultdict(list)
            for product in matched_products:
                products_by_barcode[product.barcode].append(product)

            duplicates_as_str = "\n".join(
                _("- Barcode \"%s\" already assigned to product(s): %s", barcode, ", ".join(p.display_name for p in products))
                for barcode, products in products_by_barcode.items() if len(products) > 1
            )
            raise ValidationError(_("Barcode(s) already assigned:\n\n%s", duplicates_as_str))

        if self.env['product.packaging'].search(domain, order="id", limit=1):
            raise ValidationError(_("A packaging already uses the barcode"))

    def _get_invoice_policy(self):
        return False

    @api.depends('product_template_attribute_value_ids')
    def _compute_combination_indices(self):
        for product in self:
            product.combination_indices = product.product_template_attribute_value_ids._ids2str()

    def _compute_is_product_variant(self):
        self.is_product_variant = True

    @api.onchange('lst_price')
    def _set_product_lst_price(self):
        for product in self:
            if self._context.get('uom'):
                value = self.env['uom.uom'].browse(self._context['uom'])._compute_price(product.lst_price, product.uom_id)
            else:
                value = product.lst_price
            value -= product.price_extra
            product.write({'list_price': value})

    @api.depends("product_template_attribute_value_ids.price_extra")
    def _compute_product_price_extra(self):
        for product in self:
            product.price_extra = sum(product.product_template_attribute_value_ids.mapped('price_extra'))

    @api.depends('list_price', 'price_extra')
    @api.depends_context('uom')
    def _compute_product_lst_price(self):
        to_uom = None
        if 'uom' in self._context:
            to_uom = self.env['uom.uom'].browse(self._context['uom'])

        for product in self:
            if to_uom:
                list_price = product.uom_id._compute_price(product.list_price, to_uom)
            else:
                list_price = product.list_price
            product.lst_price = list_price + product.price_extra

    @api.depends_context('partner_id')
    def _compute_product_code(self):
        read_access = self.env['ir.model.access'].check('product.supplierinfo', 'read', False)
        for product in self:
            product.code = product.default_code
            if read_access:
                for supplier_info in product.seller_ids:
                    if supplier_info.partner_id.id == product._context.get('partner_id'):
                        if supplier_info.product_id and supplier_info.product_id != product:
                            # Supplier info specific for another variant.
                            continue
                        product.code = supplier_info.product_code or product.default_code
                        if product == supplier_info.product_id:
                            # Supplier info specific for this variant.
                            break

    @api.depends_context('partner_id')
    def _compute_partner_ref(self):
        for product in self:
            for supplier_info in product.seller_ids:
                if supplier_info.partner_id.id == product._context.get('partner_id'):
                    product_name = supplier_info.product_name or product.default_code or product.name
                    product.partner_ref = '%s%s' % (product.code and '[%s] ' % product.code or '', product_name)
                    break
            else:
                product.partner_ref = product.display_name

    def _compute_variant_item_count(self):
        for product in self:
            domain = ['|',
                '&', ('product_tmpl_id', '=', product.product_tmpl_id.id), ('applied_on', '=', '1_product'),
                '&', ('product_id', '=', product.id), ('applied_on', '=', '0_product_variant')]
            product.pricelist_item_count = self.env['product.pricelist.item'].search_count(domain)

    @api.depends('product_tag_ids', 'additional_product_tag_ids')
    def _compute_all_product_tag_ids(self):
        for product in self:
            product.all_product_tag_ids = product.product_tag_ids | product.additional_product_tag_ids

    def _search_all_product_tag_ids(self, operator, operand):
        if operator in expression.NEGATIVE_TERM_OPERATORS:
            return [('product_tag_ids', operator, operand), ('additional_product_tag_ids', operator, operand)]
        return ['|', ('product_tag_ids', operator, operand), ('additional_product_tag_ids', operator, operand)]

    @api.onchange('uom_id')
    def _onchange_uom_id(self):
        if self.uom_id:
            self.uom_po_id = self.uom_id.id

    @api.onchange('uom_po_id')
    def _onchange_uom(self):
        if self.uom_id and self.uom_po_id and self.uom_id.category_id != self.uom_po_id.category_id:
            self.uom_po_id = self.uom_id

    @api.onchange('default_code')
    def _onchange_default_code(self):
        if not self.default_code:
            return

        domain = [('default_code', '=', self.default_code)]
        if self.id.origin:
            domain.append(('id', '!=', self.id.origin))

        if self.env['product.product'].search(domain, limit=1):
            return {'warning': {
                'title': _("Note:"),
                'message': _("The Internal Reference '%s' already exists.", self.default_code),
            }}

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            self.product_tmpl_id._sanitize_vals(vals)
        products = super(ProductProduct, self.with_context(create_product_product=True)).create(vals_list)
        # `_get_variant_id_for_combination` depends on existing variants
        self.clear_caches()
        return products

    def write(self, values):
        self.product_tmpl_id._sanitize_vals(values)
        res = super(ProductProduct, self).write(values)
        if 'product_template_attribute_value_ids' in values:
            # `_get_variant_id_for_combination` depends on `product_template_attribute_value_ids`
            self.clear_caches()
        elif 'active' in values:
            # `_get_first_possible_variant_id` depends on variants active state
            self.clear_caches()
        return res

    def unlink(self):
        unlink_products = self.env['product.product']
        unlink_templates = self.env['product.template']
        self.packaging_ids.unlink()
        for product in self:
            # If there is an image set on the variant and no image set on the
            # template, move the image to the template.
            if product.image_variant_1920 and not product.product_tmpl_id.image_1920:
                product.product_tmpl_id.image_1920 = product.image_variant_1920
            # Check if product still exists, in case it has been unlinked by unlinking its template
            if not product.exists():
                continue
            # Check if the product is last product of this template...
            other_products = self.search([('product_tmpl_id', '=', product.product_tmpl_id.id), ('id', '!=', product.id)])
            # ... and do not delete product template if it's configured to be created "on demand"
            if not other_products and not product.product_tmpl_id.has_dynamic_attributes():
                unlink_templates |= product.product_tmpl_id
            unlink_products |= product
        res = super(ProductProduct, unlink_products).unlink()
        # delete templates after calling super, as deleting template could lead to deleting
        # products due to ondelete='cascade'
        unlink_templates.unlink()
        # `_get_variant_id_for_combination` depends on existing variants
        self.clear_caches()
        return res

    def _filter_to_unlink(self, check_access=True):
        return self

    def _unlink_or_archive(self, check_access=True):
        """Unlink or archive products.
        Try in batch as much as possible because it is much faster.
        Use dichotomy when an exception occurs.
        """

        # Avoid access errors in case the products is shared amongst companies
        # but the underlying objects are not. If unlink fails because of an
        # AccessError (e.g. while recomputing fields), the 'write' call will
        # fail as well for the same reason since the field has been set to
        # recompute.
        if check_access:
            self.check_access_rights('unlink')
            self.check_access_rule('unlink')
            self.check_access_rights('write')
            self.check_access_rule('write')
            self = self.sudo()
            to_unlink = self._filter_to_unlink()
            to_archive = self - to_unlink
            to_archive.write({'active': False})
            self = to_unlink

        try:
            with self.env.cr.savepoint(), tools.mute_logger('odoo.sql_db'):
                self.unlink()
        except Exception:
            # We catch all kind of exceptions to be sure that the operation
            # doesn't fail.
            if len(self) > 1:
                self[:len(self) // 2]._unlink_or_archive(check_access=False)
                self[len(self) // 2:]._unlink_or_archive(check_access=False)
            else:
                if self.active:
                    # Note: this can still fail if something is preventing
                    # from archiving.
                    # This is the case from existing stock reordering rules.
                    self.write({'active': False})

    @api.returns('self', lambda value: value.id)
    def copy(self, default=None):
        """Variants are generated depending on the configuration of attributes
        and values on the template, so copying them does not make sense.

        For convenience the template is copied instead and its first variant is
        returned.
        """
        # copy variant is disabled in https://github.com/odoo/odoo/pull/38303
        # this returns the first possible combination of variant to make it
        # works for now, need to be fixed to return product_variant_id if it's
        # possible in the future
        template = self.product_tmpl_id.copy(default=default)
        return template.product_variant_id or template._create_first_product_variant()

    @api.model
    def _search(self, args, offset=0, limit=None, order=None, count=False, access_rights_uid=None):
        # TDE FIXME: strange
        if self._context.get('search_default_categ_id'):
            args = args.copy()
            args.append((('categ_id', 'child_of', self._context['search_default_categ_id'])))
        return super(ProductProduct, self)._search(args, offset=offset, limit=limit, order=order, count=count, access_rights_uid=access_rights_uid)

    @api.depends_context('display_default_code', 'seller_id')
    def _compute_display_name(self):
        # `display_name` is calling `name_get()`` which is overidden on product
        # to depend on `display_default_code` and `seller_id`
        return super()._compute_display_name()

    def name_get(self):
        # TDE: this could be cleaned a bit I think

        def _name_get(d):
            name = d.get('name', '')
            code = self._context.get('display_default_code', True) and d.get('default_code', False) or False
            if code:
                name = '[%s] %s' % (code,name)
            return (d['id'], name)

        partner_id = self._context.get('partner_id')
        if partner_id:
            partner_ids = [partner_id, self.env['res.partner'].browse(partner_id).commercial_partner_id.id]
        else:
            partner_ids = []
        company_id = self.env.context.get('company_id')

        # all user don't have access to seller and partner
        # check access and use superuser
        self.check_access_rights("read")
        self.check_access_rule("read")

        result = []

        # Prefetch the fields used by the `name_get`, so `browse` doesn't fetch other fields
        # Use `load=False` to not call `name_get` for the `product_tmpl_id`
        # Use `prefetch_fields=False` to ensure that product.template fields are not prefetched
        self.sudo().with_context(prefetch_fields=False).read(['name', 'default_code', 'product_tmpl_id'], load=False)

        product_template_ids = self.sudo().mapped('product_tmpl_id').ids

        if partner_ids:
            supplier_info = self.env['product.supplierinfo'].sudo().search([
                ('product_tmpl_id', 'in', product_template_ids),
                ('partner_id', 'in', partner_ids),
            ])
            # Prefetch the fields used by the `name_get`, so `browse` doesn't fetch other fields
            # Use `load=False` to not call `name_get` for the `product_tmpl_id` and `product_id`
            supplier_info.sudo().read(['product_tmpl_id', 'product_id', 'product_name', 'product_code'], load=False)
            supplier_info_by_template = {}
            for r in supplier_info:
                supplier_info_by_template.setdefault(r.product_tmpl_id, []).append(r)
        for product in self.sudo():
            variant = product.product_template_attribute_value_ids._get_combination_name()

            name = variant and "%s (%s)" % (product.name, variant) or product.name
            sellers = self.env['product.supplierinfo'].sudo().browse(self.env.context.get('seller_id')) or []
            if not sellers and partner_ids:
                product_supplier_info = supplier_info_by_template.get(product.product_tmpl_id, [])
                sellers = [x for x in product_supplier_info if x.product_id and x.product_id == product]
                if not sellers:
                    sellers = [x for x in product_supplier_info if not x.product_id]
                # Filter out sellers based on the company. This is done afterwards for a better
                # code readability. At this point, only a few sellers should remain, so it should
                # not be a performance issue.
                if company_id:
                    sellers = [x for x in sellers if x.company_id.id in [company_id, False]]
            if sellers:
                for s in sellers:
                    seller_variant = s.product_name and (
                        variant and "%s (%s)" % (s.product_name, variant) or s.product_name
                        ) or False
                    mydict = {
                              'id': product.id,
                              'name': seller_variant or name,
                              'default_code': s.product_code or product.default_code,
                              }
                    temp = _name_get(mydict)
                    if temp not in result:
                        result.append(temp)
            else:
                mydict = {
                          'id': product.id,
                          'name': name,
                          'default_code': product.default_code,
                          }
                result.append(_name_get(mydict))
        return result

    @api.model
    def _name_search(self, name, args=None, operator='ilike', limit=100, name_get_uid=None):
        if not args:
            args = []
        if name:
            positive_operators = ['=', 'ilike', '=ilike', 'like', '=like']
            product_ids = []
            if operator in positive_operators:
                product_ids = list(self._search([('default_code', '=', name)] + args, limit=limit, access_rights_uid=name_get_uid))
                if not product_ids:
                    product_ids = list(self._search([('barcode', '=', name)] + args, limit=limit, access_rights_uid=name_get_uid))
            if not product_ids and operator not in expression.NEGATIVE_TERM_OPERATORS:
                # Do not merge the 2 next lines into one single search, SQL search performance would be abysmal
                # on a database with thousands of matching products, due to the huge merge+unique needed for the
                # OR operator (and given the fact that the 'name' lookup results come from the ir.translation table
                # Performing a quick memory merge of ids in Python will give much better performance
                products_query = self._search(args + [('default_code', operator, name)], limit=limit)
                product_ids = list(products_query)
                if not limit or len(product_ids) < limit:
                    # we may underrun the limit because of dupes in the results, that's fine
                    limit2 = (limit - len(product_ids)) if limit else False
                    product2_ids = self._search(args + [('name', operator, name), ('id', 'not in', products_query)], limit=limit2, access_rights_uid=name_get_uid)
                    product_ids.extend(product2_ids)
            elif not product_ids and operator in expression.NEGATIVE_TERM_OPERATORS:
                domain = expression.OR([
                    ['&', ('default_code', operator, name), ('name', operator, name)],
                    ['&', ('default_code', '=', False), ('name', operator, name)],
                ])
                domain = expression.AND([args, domain])
                product_ids = list(self._search(domain, limit=limit, access_rights_uid=name_get_uid))
            if not product_ids and operator in positive_operators:
                ptrn = re.compile(r'(\[(.*?)\])')
                res = ptrn.search(name)
                if res:
                    product_ids = list(self._search([('default_code', '=', res.group(2))] + args, limit=limit, access_rights_uid=name_get_uid))
            # still no results, partner in context: search on supplier info as last hope to find something
            if not product_ids and self._context.get('partner_id'):
                suppliers_ids = self.env['product.supplierinfo']._search([
                    ('partner_id', '=', self._context.get('partner_id')),
                    '|',
                    ('product_code', operator, name),
                    ('product_name', operator, name)], access_rights_uid=name_get_uid)
                if suppliers_ids:
                    product_ids = self._search([('product_tmpl_id.seller_ids', 'in', suppliers_ids)], limit=limit, access_rights_uid=name_get_uid)
        else:
            product_ids = self._search(args, limit=limit, access_rights_uid=name_get_uid)
        return product_ids

    @api.model
    def view_header_get(self, view_id, view_type):
        if self._context.get('categ_id'):
            return _(
                'Products: %(category)s',
                category=self.env['product.category'].browse(self.env.context['categ_id']).name,
            )
        return super().view_header_get(view_id, view_type)

    def action_open_label_layout(self):
        action = self.env['ir.actions.act_window']._for_xml_id('product.action_open_label_layout')
        action['context'] = {'default_product_ids': self.ids}
        return action

    def open_pricelist_rules(self):
        self.ensure_one()
        domain = ['|',
            '&', ('product_tmpl_id', '=', self.product_tmpl_id.id), ('applied_on', '=', '1_product'),
            '&', ('product_id', '=', self.id), ('applied_on', '=', '0_product_variant')]
        return {
            'name': _('Price Rules'),
            'view_mode': 'tree,form',
            'views': [(self.env.ref('product.product_pricelist_item_tree_view_from_product').id, 'tree')],
            'res_model': 'product.pricelist.item',
            'type': 'ir.actions.act_window',
            'target': 'current',
            'domain': domain,
            'context': {
                'default_product_id': self.id,
                'default_applied_on': '0_product_variant',
            }
        }

    def open_product_template(self):
        """ Utility method used to add an "Open Template" button in product views """
        self.ensure_one()
        return {'type': 'ir.actions.act_window',
                'res_model': 'product.template',
                'view_mode': 'form',
                'res_id': self.product_tmpl_id.id,
                'target': 'new'}

    def _prepare_sellers(self, params=False):
        return self.seller_ids.filtered(lambda s: s.partner_id.active).sorted(lambda s: (s.sequence, -s.min_qty, s.price, s.id))

    def _get_filtered_sellers(self, partner_id=False, quantity=0.0, date=None, uom_id=False, params=False):
        self.ensure_one()
        if date is None:
            date = fields.Date.context_today(self)
        precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')

        sellers_filtered = self._prepare_sellers(params)
        sellers_filtered = sellers_filtered.filtered(lambda s: not s.company_id or s.company_id.id == self.env.company.id)
        sellers = self.env['product.supplierinfo']
        for seller in sellers_filtered:
            # Set quantity in UoM of seller
            quantity_uom_seller = quantity
            if quantity_uom_seller and uom_id and uom_id != seller.product_uom:
                quantity_uom_seller = uom_id._compute_quantity(quantity_uom_seller, seller.product_uom)

            if seller.date_start and seller.date_start > date:
                continue
            if seller.date_end and seller.date_end < date:
                continue
            if partner_id and seller.partner_id not in [partner_id, partner_id.parent_id]:
                continue
            if quantity is not None and float_compare(quantity_uom_seller, seller.min_qty, precision_digits=precision) == -1:
                continue
            if seller.product_id and seller.product_id != self:
                continue
            sellers |= seller
        return sellers

    def _select_seller(self, partner_id=False, quantity=0.0, date=None, uom_id=False, params=False):
        sellers = self._get_filtered_sellers(partner_id=partner_id, quantity=quantity, date=date, uom_id=uom_id, params=params)
        res = self.env['product.supplierinfo']
        for seller in sellers:
            if not res or res.partner_id == seller.partner_id:
                res |= seller
        return res and res.sorted('price')[:1]

    def price_compute(self, price_type, uom=None, currency=None, company=None, date=False):
        company = company or self.env.company
        date = date or fields.Date.context_today(self)

        self = self.with_company(company)
        if price_type == 'standard_price':
            # standard_price field can only be seen by users in base.group_user
            # Thus, in order to compute the sale price from the cost for users not in this group
            # We fetch the standard price as the superuser
            self = self.sudo()

        prices = dict.fromkeys(self.ids, 0.0)
        for product in self:
            price = product[price_type] or 0.0
            price_currency = product.currency_id
            if price_type == 'standard_price':
                price_currency = product.cost_currency_id

            if price_type == 'list_price':
                price += product.price_extra
                # we need to add the price from the attributes that do not generate variants
                # (see field product.attribute create_variant)
                if self._context.get('no_variant_attributes_price_extra'):
                    # we have a list of price_extra that comes from the attribute values, we need to sum all that
                    price += sum(self._context.get('no_variant_attributes_price_extra'))

            if uom:
                price = product.uom_id._compute_price(price, uom)

            # Convert from current user company currency to asked one
            # This is right cause a field cannot be in more than one currency
            if currency:
                price = price_currency._convert(price, currency, company, date)

            prices[product.id] = price

        return prices

    @api.model
    def get_empty_list_help(self, help):
        self = self.with_context(
            empty_list_help_document_name=_("product"),
        )
        return super(ProductProduct, self).get_empty_list_help(help)

    def get_product_multiline_description_sale(self):
        """ Compute a multiline description of this product, in the context of sales
                (do not use for purchases or other display reasons that don't intend to use "description_sale").
            It will often be used as the default description of a sale order line referencing this product.
        """
        name = self.display_name
        if self.description_sale:
            name += '\n' + self.description_sale

        return name

    def _is_variant_possible(self, parent_combination=None):
        """Return whether the variant is possible based on its own combination,
        and optionally a parent combination.

        See `_is_combination_possible` for more information.

        :param parent_combination: combination from which `self` is an
            optional or accessory product.
        :type parent_combination: recordset `product.template.attribute.value`

        :return: ẁhether the variant is possible based on its own combination
        :rtype: bool
        """
        self.ensure_one()
        return self.product_tmpl_id._is_combination_possible(self.product_template_attribute_value_ids, parent_combination=parent_combination, ignore_no_variant=True)

    def toggle_active(self):
        """ Archiving related product.template if there is not any more active product.product
        (and vice versa, unarchiving the related product template if there is now an active product.product) """
        result = super().toggle_active()
        # We deactivate product templates which are active with no active variants.
        tmpl_to_deactivate = self.filtered(lambda product: (product.product_tmpl_id.active
                                                            and not product.product_tmpl_id.product_variant_ids)).mapped('product_tmpl_id')
        # We activate product templates which are inactive with active variants.
        tmpl_to_activate = self.filtered(lambda product: (not product.product_tmpl_id.active
                                                          and product.product_tmpl_id.product_variant_ids)).mapped('product_tmpl_id')
        (tmpl_to_deactivate + tmpl_to_activate).toggle_active()
        return result

    def get_contextual_price(self):
        return self._get_contextual_price()

    def _get_contextual_price(self):
        self.ensure_one()
        return self.product_tmpl_id._get_contextual_price(self)
