Three related problems with Drop Shipping with Anglo Saxon Accounting.

One has been broken since #20080.

Another is caused by the same code.

The third - a fix from #12687 - is being bypassed by current code.



Impacted versions:

11.0, and 10.0 for at least some of this

Steps to reproduce:

Set up a product with
- real time valuation
- standard price
- Anglo Saxon accounting
- drop shipping turned on
- invoicing on delivered quantities

Create a product with a standard price of $40.

Current behavior:

_If I create a sales order and choose to ship from existing stock, then the invoice created after delivery is correct, and it has the correct Anglo Saxon account moves._

- Dr COGS $40
- Cr Output $40

If I create a sales order and choose to drop ship, I can then go to the RFQ, and change the RFQ price to $45, then receive the product, and generate the Vendor Bill.  Everything is correct at this point.  When I go back to the Sales Order and create and validate the invoice, it has the incorrect Anglo Saxon account moves:

- Dr Output $45
- Cr COGS $45

Expected behavior:

The accounting should be the same on the invoice.  The value is wrong, and the debits and credits are reversed.

Also, there should be an additional journal:

- Dr Output $40
- Cr Input $40

Th 3 problems are:

1. It is getting a -ve price unit from _compute_average_price because the stock move is not an outgoing move, but a supplier -> customer move!
2. It is getting the average price from those moves and using it, even if the product is using standard price.
3. The extra move that #12687 created is no longer being generated as the account moves are being bypassed entirely for dropshipping.  Somewhere in the process, we need to move the value from stock_input to stock_output.  This may be a v11 problem only.

Video/Screenshot link (optional):


if not corrected_value:
                    continue
                if move._is_in():
                    
                    
                    
                    
                    
                    move.with_context(force_valuation_amount=-corrected_value)._account_entry_move()
                else:
                    move.with_context(force_valuation_amount=corrected_value)._account_entry_move()
    @api.model
    def _run_fifo_vacuum(self):
        
        fifo_valued_products = self.env['product.product']
        fifo_valued_products |= self.env['product.template'].search([('property_cost_method', '=', 'fifo')]).mapped(
            'product_variant_ids')
        fifo_valued_categories = self.env['product.category'].search([('property_cost_method', '=', 'fifo')])
        fifo_valued_products |= self.env['product.product'].search([('categ_id', 'child_of', fifo_valued_categories.ids)])
        moves_to_vacuum = self.env['stock.move']
        for product in fifo_valued_products:
            moves_to_vacuum |= self.search(
                [('product_id', '=', product.id), ('remaining_qty', '<', 0)] + self._get_all_base_domain())
        moves_to_vacuum._fifo_vacuum()
    @api.multi
    def _get_accounting_data_for_valuation(self):