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

import json
import logging
from datetime import datetime, timedelta
from collections import defaultdict

from odoo import api, fields, models, _
from odoo.tools import DEFAULT_SERVER_DATETIME_FORMAT, float_compare, float_round
from odoo.tools.float_utils import float_repr
from odoo.tools.misc import format_date
from odoo.exceptions import UserError


_logger = logging.getLogger(__name__)


class SaleOrder(models.Model):
    _inherit = "sale.order"

    @api.model
    def _default_warehouse_id(self):
        # !!! Any change to the default value may have to be repercuted
        # on _init_column() below.
        return self.env.user._get_default_warehouse_id()

    incoterm = fields.Many2one(
        'account.incoterms', 'Incoterm',
        help="International Commercial Terms are a series of predefined commercial terms used in international transactions.")
    picking_policy = fields.Selection([
        ('direct', 'As soon as possible'),
        ('one', 'When all products are ready')],
        string='Shipping Policy', required=True, readonly=True, default='direct',
        states={'draft': [('readonly', False)], 'sent': [('readonly', False)]}
        ,help="If you deliver all products at once, the delivery order will be scheduled based on the greatest "
        "product lead time. Otherwise, it will be based on the shortest.")
    warehouse_id = fields.Many2one(
        'stock.warehouse', string='Warehouse',
        required=True, readonly=True, states={'draft': [('readonly', False)], 'sent': [('readonly', False)]},
        default=_default_warehouse_id, check_company=True)
    picking_ids = fields.One2many('stock.picking', 'sale_id', string='Transfers')
    delivery_count = fields.Integer(string='Delivery Orders', compute='_compute_picking_ids')
    procurement_group_id = fields.Many2one('procurement.group', 'Procurement Group', copy=False)
    effective_date = fields.Date("Effective Date", compute='_compute_effective_date', store=True, help="Completion date of the first delivery order.")
    expected_date = fields.Datetime( help="Delivery date you can promise to the customer, computed from the minimum lead time of "
                                          "the order lines in case of Service products. In case of shipping, the shipping policy of "
                                          "the order will be taken into account to either use the minimum or maximum lead time of "
                                          "the order lines.")
    json_popover = fields.Char('JSON data for the popover widget', compute='_compute_json_popover')
    show_json_popover = fields.Boolean('Has late picking', compute='_compute_json_popover')

    def _init_column(self, column_name):
        """ Ensure the default warehouse_id is correctly assigned

        At column initialization, the ir.model.fields for res.users.property_warehouse_id isn't created,
        which means trying to read the property field to get the default value will crash.
        We therefore enforce the default here, without going through
        the default function on the warehouse_id field.
        """
        if column_name != "warehouse_id":
            return super(SaleOrder, self)._init_column(column_name)
        field = self._fields[column_name]
        default = self.env['stock.warehouse'].search([('company_id', '=', self.env.company.id)], limit=1)
        value = field.convert_to_write(default, self)
        value = field.convert_to_column(value, self)
        if value is not None:
            _logger.debug("Table '%s': setting default value of new column %s to %r",
                self._table, column_name, value)
            query = 'UPDATE "%s" SET "%s"=%s WHERE "%s" IS NULL' % (
                self._table, column_name, field.column_format, column_name)
            self._cr.execute(query, (value,))

    @api.depends('picking_ids.date_done')
    def _compute_effective_date(self):
        for order in self:
            pickings = order.picking_ids.filtered(lambda x: x.state == 'done' and x.location_dest_id.usage == 'customer')
            dates_list = [date for date in pickings.mapped('date_done') if date]
            order.effective_date = min(dates_list).date() if dates_list else False

    @api.depends('picking_policy')
    def _compute_expected_date(self):
        super(SaleOrder, self)._compute_expected_date()
        for order in self:
            dates_list = []
            for line in order.order_line.filtered(lambda x: x.state != 'cancel' and not x._is_delivery() and not x.display_type):
                dt = line._expected_date()
                dates_list.append(dt)
            if dates_list:
                expected_date = min(dates_list) if order.picking_policy == 'direct' else max(dates_list)
                order.expected_date = fields.Datetime.to_string(expected_date)

    @api.model
    def create(self, vals):
        if 'warehouse_id' not in vals and 'company_id' in vals:
            user = self.env['res.users'].browse(vals.get('user_id', False))
            vals['warehouse_id'] = user.with_company(vals.get('company_id'))._get_default_warehouse_id().id
        return super().create(vals)

    def write(self, values):
        if values.get('order_line') and self.state == 'sale':
            for order in self:
                pre_order_line_qty = {order_line: order_line.product_uom_qty for order_line in order.mapped('order_line') if not order_line.is_expense}

        if values.get('partner_shipping_id'):
            new_partner = self.env['res.partner'].browse(values.get('partner_shipping_id'))
            for record in self:
                picking = record.mapped('picking_ids').filtered(lambda x: x.state not in ('done', 'cancel'))
                addresses = (record.partner_shipping_id.display_name, new_partner.display_name)
                message = _("""The delivery address has been changed on the Sales Order<br/>
                        From <strong>"%s"</strong> To <strong>"%s"</strong>,
                        You should probably update the partner on this document.""") % addresses
                picking.activity_schedule('mail.mail_activity_data_warning', note=message, user_id=self.env.user.id)

        if values.get('commitment_date'):
            # protagate commitment_date as the deadline of the related stock move.
            # TODO: Log a note on each down document
            self.order_line.move_ids.date_deadline = fields.Datetime.to_datetime(values.get('commitment_date'))

        res = super(SaleOrder, self).write(values)
        if values.get('order_line') and self.state == 'sale':
            for order in self:
                to_log = {}
                for order_line in order.order_line:
                    if float_compare(order_line.product_uom_qty, pre_order_line_qty.get(order_line, 0.0), order_line.product_uom.rounding) < 0:
                        to_log[order_line] = (order_line.product_uom_qty, pre_order_line_qty.get(order_line, 0.0))
                if to_log:
                    documents = self.env['stock.picking']._log_activity_get_documents(to_log, 'move_ids', 'UP')
                    documents = {k:v for k, v in documents.items() if k[0].state != 'cancel'}
                    order._log_decrease_ordered_quantity(documents)
        return res

    def _compute_json_popover(self):
        for order in self:
            late_stock_picking = order.picking_ids.filtered(lambda p: p.delay_alert_date)
            order.json_popover = json.dumps({
                'popoverTemplate': 'sale_stock.DelayAlertWidget',
                'late_elements': [{
                        'id': late_move.id,
                        'name': late_move.display_name,
                        'model': 'stock.picking',
                    } for late_move in late_stock_picking
                ]
            })
            order.show_json_popover = bool(late_stock_picking)

    def _action_confirm(self):
        self.order_line._action_launch_stock_rule()
        return super(SaleOrder, self)._action_confirm()

    @api.depends('picking_ids')
    def _compute_picking_ids(self):
        for order in self:
            order.delivery_count = len(order.picking_ids)

    @api.onchange('company_id')
    def _onchange_company_id(self):
        if self.company_id:
            warehouse_id = self.env['ir.default'].get_model_defaults('sale.order').get('warehouse_id')
            self.warehouse_id = warehouse_id or self.user_id.with_company(self.company_id.id)._get_default_warehouse_id().id

    @api.onchange('user_id')
    def onchange_user_id(self):
        super().onchange_user_id()
        self.warehouse_id = self.user_id.with_company(self.company_id.id)._get_default_warehouse_id().id

    @api.onchange('partner_shipping_id')
    def _onchange_partner_shipping_id(self):
        res = {}
        pickings = self.picking_ids.filtered(
            lambda p: p.state not in ['done', 'cancel'] and p.partner_id != self.partner_shipping_id
        )
        if pickings:
            res['warning'] = {
                'title': _('Warning!'),
                'message': _(
                    'Do not forget to change the partner on the following delivery orders: %s'
                ) % (','.join(pickings.mapped('name')))
            }
        return res

    def action_view_delivery(self):
        '''
        This function returns an action that display existing delivery orders
        of given sales order ids. It can either be a in a list or in a form
        view, if there is only one delivery order to show.
        '''
        action = self.env["ir.actions.actions"]._for_xml_id("stock.action_picking_tree_all")

        pickings = self.mapped('picking_ids')
        if len(pickings) > 1:
            action['domain'] = [('id', 'in', pickings.ids)]
        elif pickings:
            form_view = [(self.env.ref('stock.view_picking_form').id, 'form')]
            if 'views' in action:
                action['views'] = form_view + [(state,view) for state,view in action['views'] if view != 'form']
            else:
                action['views'] = form_view
            action['res_id'] = pickings.id
        # Prepare the context.
        picking_id = pickings.filtered(lambda l: l.picking_type_id.code == 'outgoing')
        if picking_id:
            picking_id = picking_id[0]
        else:
            picking_id = pickings[0]
        action['context'] = dict(self._context, default_partner_id=self.partner_id.id, default_picking_type_id=picking_id.picking_type_id.id, default_origin=self.name, default_group_id=picking_id.group_id.id)
        return action

    def action_cancel(self):
        documents = None
        for sale_order in self:
            if sale_order.state == 'sale' and sale_order.order_line:
                sale_order_lines_quantities = {order_line: (order_line.product_uom_qty, 0) for order_line in sale_order.order_line}
                documents = self.env['stock.picking']._log_activity_get_documents(sale_order_lines_quantities, 'move_ids', 'UP')
        self.picking_ids.filtered(lambda p: p.state != 'done').action_cancel()
        if documents:
            filtered_documents = {}
            for (parent, responsible), rendering_context in documents.items():
                if parent._name == 'stock.picking':
                    if parent.state == 'cancel':
                        continue
                filtered_documents[(parent, responsible)] = rendering_context
            self._log_decrease_ordered_quantity(filtered_documents, cancel=True)
        return super(SaleOrder, self).action_cancel()

    def _prepare_invoice(self):
        invoice_vals = super(SaleOrder, self)._prepare_invoice()
        invoice_vals['invoice_incoterm_id'] = self.incoterm.id
        return invoice_vals

    @api.model
    def _get_customer_lead(self, product_tmpl_id):
        super(SaleOrder, self)._get_customer_lead(product_tmpl_id)
        return product_tmpl_id.sale_delay

    def _log_decrease_ordered_quantity(self, documents, cancel=False):

        def _render_note_exception_quantity_so(rendering_context):
            order_exceptions, visited_moves = rendering_context
            visited_moves = list(visited_moves)
            visited_moves = self.env[visited_moves[0]._name].concat(*visited_moves)
            order_line_ids = self.env['sale.order.line'].browse([order_line.id for order in order_exceptions.values() for order_line in order[0]])
            sale_order_ids = order_line_ids.mapped('order_id')
            impacted_pickings = visited_moves.filtered(lambda m: m.state not in ('done', 'cancel')).mapped('picking_id')
            values = {
                'sale_order_ids': sale_order_ids,
                'order_exceptions': order_exceptions.values(),
                'impacted_pickings': impacted_pickings,
                'cancel': cancel
            }
            return self.env.ref('sale_stock.exception_on_so')._render(values=values)

        self.env['stock.picking']._log_activity(_render_note_exception_quantity_so, documents)

    def _show_cancel_wizard(self):
        res = super(SaleOrder, self)._show_cancel_wizard()
        for order in self:
            if any(picking.state == 'done' for picking in order.picking_ids) and not order._context.get('disable_cancel_warning'):
                return True
        return res

class SaleOrderLine(models.Model):
    _inherit = 'sale.order.line'

    qty_delivered_method = fields.Selection(selection_add=[('stock_move', 'Stock Moves')])
    product_packaging = fields.Many2one( 'product.packaging', string='Package', default=False, check_company=True)
    route_id = fields.Many2one('stock.location.route', string='Route', domain=[('sale_selectable', '=', True)], ondelete='restrict', check_company=True)
    move_ids = fields.One2many('stock.move', 'sale_line_id', string='Stock Moves')
    product_type = fields.Selection(related='product_id.type')
    virtual_available_at_date = fields.Float(compute='_compute_qty_at_date', digits='Product Unit of Measure')
    scheduled_date = fields.Datetime(compute='_compute_qty_at_date')
    forecast_expected_date = fields.Datetime(compute='_compute_qty_at_date')
    free_qty_today = fields.Float(compute='_compute_qty_at_date', digits='Product Unit of Measure')
    qty_available_today = fields.Float(compute='_compute_qty_at_date')
    warehouse_id = fields.Many2one(related='order_id.warehouse_id')
    qty_to_deliver = fields.Float(compute='_compute_qty_to_deliver', digits='Product Unit of Measure')
    is_mto = fields.Boolean(compute='_compute_is_mto')
    display_qty_widget = fields.Boolean(compute='_compute_qty_to_deliver')

    @api.depends('product_type', 'product_uom_qty', 'qty_delivered', 'state', 'move_ids', 'product_uom')
    def _compute_qty_to_deliver(self):
        """Compute the visibility of the inventory widget."""
        for line in self:
            line.qty_to_deliver = line.product_uom_qty - line.qty_delivered
            if line.state in ('draft', 'sent', 'sale') and line.product_type == 'product' and line.product_uom and line.qty_to_deliver > 0:
                if line.state == 'sale' and not line.move_ids:
                    line.display_qty_widget = False
                else:
                    line.display_qty_widget = True
            else:
                line.display_qty_widget = False

    @api.depends(
        'product_id', 'customer_lead', 'product_uom_qty', 'product_uom', 'order_id.commitment_date',
        'move_ids', 'move_ids.forecast_expected_date', 'move_ids.forecast_availability')
    def _compute_qty_at_date(self):
        """ Compute the quantity forecasted of product at delivery date. There are
        two cases:
         1. The quotation has a commitment_date, we take it as delivery date
         2. The quotation hasn't commitment_date, we compute the estimated delivery
            date based on lead time"""
        treated = self.browse()
        # If the state is already in sale the picking is created and a simple forecasted quantity isn't enough
        # Then used the forecasted data of the related stock.move
        for line in self.filtered(lambda l: l.state == 'sale'):
            if not line.display_qty_widget:
                continue
            moves = line.move_ids.filtered(lambda m: m.product_id == line.product_id)
            line.forecast_expected_date = max(moves.filtered("forecast_expected_date").mapped("forecast_expected_date"), default=False)
            line.qty_available_today = 0
            line.free_qty_today = 0
            for move in moves:
                line.qty_available_today += move.product_uom._compute_quantity(move.reserved_availability, line.product_uom)
                line.free_qty_today += move.product_id.uom_id._compute_quantity(move.forecast_availability, line.product_uom)
            line.scheduled_date = line.order_id.commitment_date or line._expected_date()
            line.virtual_available_at_date = False
            treated |= line

        qty_processed_per_product = defaultdict(lambda: 0)
        grouped_lines = defaultdict(lambda: self.env['sale.order.line'])
        # We first loop over the SO lines to group them by warehouse and schedule
        # date in order to batch the read of the quantities computed field.
        for line in self.filtered(lambda l: l.state in ('draft', 'sent')):
            if not (line.product_id and line.display_qty_widget):
                continue
            grouped_lines[(line.warehouse_id.id, line.order_id.commitment_date or line._expected_date())] |= line

        for (warehouse, scheduled_date), lines in grouped_lines.items():
            product_qties = lines.mapped('product_id').with_context(to_date=scheduled_date, warehouse=warehouse).read([
                'qty_available',
                'free_qty',
                'virtual_available',
            ])
            qties_per_product = {
                product['id']: (product['qty_available'], product['free_qty'], product['virtual_available'])
                for product in product_qties
            }
            for line in lines:
                line.scheduled_date = scheduled_date
                qty_available_today, free_qty_today, virtual_available_at_date = qties_per_product[line.product_id.id]
                line.qty_available_today = qty_available_today - qty_processed_per_product[line.product_id.id]
                line.free_qty_today = free_qty_today - qty_processed_per_product[line.product_id.id]
                line.virtual_available_at_date = virtual_available_at_date - qty_processed_per_product[line.product_id.id]
                line.forecast_expected_date = False
                product_qty = line.product_uom_qty
                if line.product_uom and line.product_id.uom_id and line.product_uom != line.product_id.uom_id:
                    line.qty_available_today = line.product_id.uom_id._compute_quantity(line.qty_available_today, line.product_uom)
                    line.free_qty_today = line.product_id.uom_id._compute_quantity(line.free_qty_today, line.product_uom)
                    line.virtual_available_at_date = line.product_id.uom_id._compute_quantity(line.virtual_available_at_date, line.product_uom)
                    product_qty = line.product_uom._compute_quantity(product_qty, line.product_id.uom_id)
                qty_processed_per_product[line.product_id.id] += product_qty
            treated |= lines
        remaining = (self - treated)
        remaining.virtual_available_at_date = False
        remaining.scheduled_date = False
        remaining.forecast_expected_date = False
        remaining.free_qty_today = False
        remaining.qty_available_today = False

    @api.depends('product_id', 'route_id', 'order_id.warehouse_id', 'product_id.route_ids')
    def _compute_is_mto(self):
        """ Verify the route of the product based on the warehouse
            set 'is_available' at True if the product availibility in stock does
            not need to be verified, which is the case in MTO, Cross-Dock or Drop-Shipping
        """
        self.is_mto = False
        for line in self:
            if not line.display_qty_widget:
                continue
            product = line.product_id
            product_routes = line.route_id or (product.route_ids + product.categ_id.total_route_ids)

            # Check MTO
            mto_route = line.order_id.warehouse_id.mto_pull_id.route_id
            if not mto_route:
                try:
                    mto_route = self.env['stock.warehouse']._find_global_route('stock.route_warehouse0_mto', _('Make To Order'))
                except UserError:
                    # if route MTO not found in ir_model_data, we treat the product as in MTS
                    pass

            if mto_route and mto_route in product_routes:
                line.is_mto = True
            else:
                line.is_mto = False

    @api.depends('product_id')
    def _compute_qty_delivered_method(self):
        """ Stock module compute delivered qty for product [('type', 'in', ['consu', 'product'])]
            For SO line coming from expense, no picking should be generate: we don't manage stock for
            thoses lines, even if the product is a storable.
        """
        super(SaleOrderLine, self)._compute_qty_delivered_method()

        for line in self:
            if not line.is_expense and line.product_id.type in ['consu', 'product']:
                line.qty_delivered_method = 'stock_move'

    @api.depends('move_ids.state', 'move_ids.scrapped', 'move_ids.product_uom_qty', 'move_ids.product_uom')
    def _compute_qty_delivered(self):
        super(SaleOrderLine, self)._compute_qty_delivered()

        for line in self:  # TODO: maybe one day, this should be done in SQL for performance sake
            if line.qty_delivered_method == 'stock_move':
                qty = 0.0
                outgoing_moves, incoming_moves = line._get_outgoing_incoming_moves()
                for move in outgoing_moves:
                    if move.state != 'done':
                        continue
                    qty += move.product_uom._compute_quantity(move.product_uom_qty, line.product_uom, rounding_method='HALF-UP')
                for move in incoming_moves:
                    if move.state != 'done':
                        continue
                    qty -= move.product_uom._compute_quantity(move.product_uom_qty, line.product_uom, rounding_method='HALF-UP')
                line.qty_delivered = qty

    @api.model_create_multi
    def create(self, vals_list):
        lines = super(SaleOrderLine, self).create(vals_list)
        lines.filtered(lambda line: line.state == 'sale')._action_launch_stock_rule()
        return lines

    def write(self, values):
        lines = self.env['sale.order.line']
        if 'product_uom_qty' in values:
            precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
            lines = self.filtered(
                lambda r: r.state == 'sale' and not r.is_expense and float_compare(r.product_uom_qty, values['product_uom_qty'], precision_digits=precision) == -1)
        previous_product_uom_qty = {line.id: line.product_uom_qty for line in lines}
        res = super(SaleOrderLine, self).write(values)
        if lines:
            lines._action_launch_stock_rule(previous_product_uom_qty)
        if 'customer_lead' in values and self.state == 'sale' and not self.order_id.commitment_date:
            # Propagate deadline on related stock move
            self.move_ids.date_deadline = self.order_id.date_order + timedelta(days=self.customer_lead or 0.0)
        return res

    @api.depends('order_id.state')
    def _compute_invoice_status(self):
        super(SaleOrderLine, self)._compute_invoice_status()
        for line in self:
            # We handle the following specific situation: a physical product is partially delivered,
            # but we would like to set its invoice status to 'Fully Invoiced'. The use case is for
            # products sold by weight, where the delivered quantity rarely matches exactly the
            # quantity ordered.
            if line.order_id.state == 'done'\
                    and line.invoice_status == 'no'\
                    and line.product_id.type in ['consu', 'product']\
                    and line.product_id.invoice_policy == 'delivery'\
                    and line.move_ids \
                    and all(move.state in ['done', 'cancel'] for move in line.move_ids):
                line.invoice_status = 'invoiced'

    @api.depends('move_ids')
    def _compute_product_updatable(self):
        for line in self:
            if not line.move_ids.filtered(lambda m: m.state != 'cancel'):
                super(SaleOrderLine, line)._compute_product_updatable()
            else:
                line.product_updatable = False

    @api.onchange('product_id')
    def _onchange_product_id_set_customer_lead(self):
        self.customer_lead = self.product_id.sale_delay

    @api.onchange('product_packaging')
    def _onchange_product_packaging(self):
        if self.product_packaging:
            return self._check_package()

    @api.onchange('product_uom_qty')
    def _onchange_product_uom_qty(self):
        # When modifying a one2many, _origin doesn't guarantee that its values will be the ones
        # in database. Hence, we need to explicitly read them from there.
        if self._origin:
            product_uom_qty_origin = self._origin.read(["product_uom_qty"])[0]["product_uom_qty"]
        else:
            product_uom_qty_origin = 0

        if self.state == 'sale' and self.product_id.type in ['product', 'consu'] and self.product_uom_qty < product_uom_qty_origin:
            # Do not display this warning if the new quantity is below the delivered
            # one; the `write` will raise an `UserError` anyway.
            if self.product_uom_qty < self.qty_delivered:
                return {}
            warning_mess = {
                'title': _('Ordered quantity decreased!'),
                'message' : _('You are decreasing the ordered quantity! Do not forget to manually update the delivery order if needed.'),
            }
            return {'warning': warning_mess}
        return {}

    def _prepare_procurement_values(self, group_id=False):
        """ Prepare specific key for moves or other components that will be created from a stock rule
        comming from a sale order line. This method could be override in order to add other custom key that could
        be used in move/po creation.
        """
        values = super(SaleOrderLine, self)._prepare_procurement_values(group_id)
        self.ensure_one()
        # Use the delivery date if there is else use date_order and lead time
        date_deadline = self.order_id.commitment_date or (self.order_id.date_order + timedelta(days=self.customer_lead or 0.0))
        date_planned = date_deadline - timedelta(days=self.order_id.company_id.security_lead)
        values.update({
            'group_id': group_id,
            'sale_line_id': self.id,
            'date_planned': date_planned,
            'date_deadline': date_deadline,
            'route_ids': self.route_id,
            'warehouse_id': self.order_id.warehouse_id or False,
            'partner_id': self.order_id.partner_shipping_id.id,
            'product_description_variants': self._get_sale_order_line_multiline_description_variants(),
            'company_id': self.order_id.company_id,
        })
        return values

    def _get_qty_procurement(self, previous_product_uom_qty=False):
        self.ensure_one()
        qty = 0.0
        outgoing_moves, incoming_moves = self._get_outgoing_incoming_moves()
        for move in outgoing_moves:
            qty += move.product_uom._compute_quantity(move.product_uom_qty, self.product_uom, rounding_method='HALF-UP')
        for move in incoming_moves:
            qty -= move.product_uom._compute_quantity(move.product_uom_qty, self.product_uom, rounding_method='HALF-UP')
        return qty

    def _get_outgoing_incoming_moves(self):
        outgoing_moves = self.env['stock.move']
        incoming_moves = self.env['stock.move']

        for move in self.move_ids.filtered(lambda r: r.state != 'cancel' and not r.scrapped and self.product_id == r.product_id):
            if move.location_dest_id.usage == "customer":
                if not move.origin_returned_move_id or (move.origin_returned_move_id and move.to_refund):
                    outgoing_moves |= move
            elif move.location_dest_id.usage != "customer" and move.to_refund:
                incoming_moves |= move

        return outgoing_moves, incoming_moves

    def _get_procurement_group(self):
        return self.order_id.procurement_group_id

    def _prepare_procurement_group_vals(self):
        return {
            'name': self.order_id.name,
            'move_type': self.order_id.picking_policy,
            'sale_id': self.order_id.id,
            'partner_id': self.order_id.partner_shipping_id.id,
        }

    def _action_launch_stock_rule(self, previous_product_uom_qty=False):
        """
        Launch procurement group run method with required/custom fields genrated by a
        sale order line. procurement group will launch '_run_pull', '_run_buy' or '_run_manufacture'
        depending on the sale order line product rule.
        """
        precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
        procurements = []
        for line in self:
            line = line.with_company(line.company_id)
            if line.state != 'sale' or not line.product_id.type in ('consu','product'):
                continue
            qty = line._get_qty_procurement(previous_product_uom_qty)
            if float_compare(qty, line.product_uom_qty, precision_digits=precision) >= 0:
                continue

            group_id = line._get_procurement_group()
            if not group_id:
                group_id = self.env['procurement.group'].create(line._prepare_procurement_group_vals())
                line.order_id.procurement_group_id = group_id
            else:
                # In case the procurement group is already created and the order was
                # cancelled, we need to update certain values of the group.
                updated_vals = {}
                if group_id.partner_id != line.order_id.partner_shipping_id:
                    updated_vals.update({'partner_id': line.order_id.partner_shipping_id.id})
                if group_id.move_type != line.order_id.picking_policy:
                    updated_vals.update({'move_type': line.order_id.picking_policy})
                if updated_vals:
                    group_id.write(updated_vals)

            values = line._prepare_procurement_values(group_id=group_id)
            product_qty = line.product_uom_qty - qty

            line_uom = line.product_uom
            quant_uom = line.product_id.uom_id
            product_qty, procurement_uom = line_uom._adjust_uom_quantities(product_qty, quant_uom)
            procurements.append(self.env['procurement.group'].Procurement(
                line.product_id, product_qty, procurement_uom,
                line.order_id.partner_shipping_id.property_stock_customer,
                line.name, line.order_id.name, line.order_id.company_id, values))
        if procurements:
            self.env['procurement.group'].run(procurements)
        return True

    def _check_package(self):
        default_uom = self.product_id.uom_id
        pack = self.product_packaging
        qty = self.product_uom_qty
        q = default_uom._compute_quantity(pack.qty, self.product_uom)
        # We do not use the modulo operator to check if qty is a mltiple of q. Indeed the quantity
        # per package might be a float, leading to incorrect results. For example:
        # 8 % 1.6 = 1.5999999999999996
        # 5.4 % 1.8 = 2.220446049250313e-16
        if (
            qty
            and q
            and float_compare(
                qty / q, float_round(qty / q, precision_rounding=1.0), precision_rounding=0.001
            )
            != 0
        ):
            newqty = qty - (qty % q) + q
            return {
                'warning': {
                    'title': _('Warning'),
                    'message': _(
                        "This product is packaged by %(pack_size).2f %(pack_name)s. You should sell %(quantity).2f %(unit)s.",
                        pack_size=pack.qty,
                        pack_name=default_uom.name,
                        quantity=newqty,
                        unit=self.product_uom.name
                    ),
                },
            }
        return {}

    def _update_line_quantity(self, values):
        precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
        line_products = self.filtered(lambda l: l.product_id.type in ['product', 'consu'])
        if line_products.mapped('qty_delivered') and float_compare(values['product_uom_qty'], max(line_products.mapped('qty_delivered')), precision_digits=precision) == -1:
            raise UserError(_('You cannot decrease the ordered quantity below the delivered quantity.\n'
                              'Create a return first.'))
        super(SaleOrderLine, self)._update_line_quantity(values)
