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path: root/addons/stock/report/report_stock_forecasted.py
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# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from collections import defaultdict

from odoo import api, models
from odoo.tools import float_is_zero, format_datetime, format_date, float_round


class ReplenishmentReport(models.AbstractModel):
    _name = 'report.stock.report_product_product_replenishment'
    _description = "Stock Replenishment Report"

    def _product_domain(self, product_template_ids, product_variant_ids):
        if product_template_ids:
            return [('product_tmpl_id', 'in', product_template_ids)]
        return [('product_id', 'in', product_variant_ids)]

    def _move_domain(self, product_template_ids, product_variant_ids, wh_location_ids):
        move_domain = self._product_domain(product_template_ids, product_variant_ids)
        move_domain += [('product_uom_qty', '!=', 0)]
        out_domain = move_domain + [
            '&',
            ('location_id', 'in', wh_location_ids),
            ('location_dest_id', 'not in', wh_location_ids),
        ]
        in_domain = move_domain + [
            '&',
            ('location_id', 'not in', wh_location_ids),
            ('location_dest_id', 'in', wh_location_ids),
        ]
        return in_domain, out_domain

    def _move_draft_domain(self, product_template_ids, product_variant_ids, wh_location_ids):
        in_domain, out_domain = self._move_domain(product_template_ids, product_variant_ids, wh_location_ids)
        in_domain += [('state', '=', 'draft')]
        out_domain += [('state', '=', 'draft')]
        return in_domain, out_domain

    def _move_confirmed_domain(self, product_template_ids, product_variant_ids, wh_location_ids):
        in_domain, out_domain = self._move_domain(product_template_ids, product_variant_ids, wh_location_ids)
        out_domain += [('state', 'not in', ['draft', 'cancel', 'done'])]
        in_domain += [('state', 'not in', ['draft', 'cancel', 'done'])]
        return in_domain, out_domain

    def _compute_draft_quantity_count(self, product_template_ids, product_variant_ids, wh_location_ids):
        in_domain, out_domain = self._move_draft_domain(product_template_ids, product_variant_ids, wh_location_ids)
        incoming_moves = self.env['stock.move'].read_group(in_domain, ['product_qty:sum'], 'product_id')
        outgoing_moves = self.env['stock.move'].read_group(out_domain, ['product_qty:sum'], 'product_id')
        in_sum = sum(move['product_qty'] for move in incoming_moves)
        out_sum = sum(move['product_qty'] for move in outgoing_moves)
        return {
            'draft_picking_qty': {
                'in': in_sum,
                'out': out_sum
            },
            'qty': {
                'in': in_sum,
                'out': out_sum
            }
        }

    @api.model
    def _get_report_values(self, docids, data=None):
        return {
            'data': data,
            'doc_ids': docids,
            'doc_model': 'product.product',
            'docs': self._get_report_data(product_variant_ids=docids),
        }

    def _get_report_data(self, product_template_ids=False, product_variant_ids=False):
        assert product_template_ids or product_variant_ids
        res = {}

        # Get the warehouse we're working on as well as its locations.
        if self.env.context.get('warehouse'):
            warehouse = self.env['stock.warehouse'].browse(self.env.context['warehouse'])
        else:
            warehouse = self.env['stock.warehouse'].search([
                ('company_id', '=', self.env.company.id)
            ], limit=1)
            self.env.context = dict(self.env.context, warehouse=warehouse.id)
        wh_location_ids = [loc['id'] for loc in self.env['stock.location'].search_read(
            [('id', 'child_of', warehouse.view_location_id.id)],
            ['id'],
        )]
        res['active_warehouse'] = warehouse.display_name

        # Get the products we're working, fill the rendering context with some of their attributes.
        if product_template_ids:
            product_templates = self.env['product.template'].browse(product_template_ids)
            res['product_templates'] = product_templates
            res['product_variants'] = product_templates.product_variant_ids
            res['multiple_product'] = len(product_templates.product_variant_ids) > 1
            res['uom'] = product_templates[:1].uom_id.display_name
            res['quantity_on_hand'] = sum(product_templates.mapped('qty_available'))
            res['virtual_available'] = sum(product_templates.mapped('virtual_available'))
        elif product_variant_ids:
            product_variants = self.env['product.product'].browse(product_variant_ids)
            res['product_templates'] = False
            res['product_variants'] = product_variants
            res['multiple_product'] = len(product_variants) > 1
            res['uom'] = product_variants[:1].uom_id.display_name
            res['quantity_on_hand'] = sum(product_variants.mapped('qty_available'))
            res['virtual_available'] = sum(product_variants.mapped('virtual_available'))
        res.update(self._compute_draft_quantity_count(product_template_ids, product_variant_ids, wh_location_ids))

        res['lines'] = self._get_report_lines(product_template_ids, product_variant_ids, wh_location_ids)
        return res

    def _prepare_report_line(self, quantity, move_out=None, move_in=None, replenishment_filled=True, product=False, reservation=False):
        timezone = self._context.get('tz')
        product = product or (move_out.product_id if move_out else move_in.product_id)
        is_late = move_out.date < move_in.date if (move_out and move_in) else False
        return {
            'document_in': move_in._get_source_document() if move_in else False,
            'document_out': move_out._get_source_document() if move_out else False,
            'product': {
                'id': product.id,
                'display_name': product.display_name
            },
            'replenishment_filled': replenishment_filled,
            'uom_id': product.uom_id,
            'receipt_date': format_datetime(self.env, move_in.date, timezone, dt_format=False) if move_in else False,
            'delivery_date': format_datetime(self.env, move_out.date, timezone, dt_format=False) if move_out else False,
            'is_late': is_late,
            'quantity': float_round(quantity, precision_rounding=product.uom_id.rounding),
            'move_out': move_out,
            'move_in': move_in,
            'reservation': reservation,
        }

    def _get_report_lines(self, product_template_ids, product_variant_ids, wh_location_ids):
        def _rollup_move_dests(move, seen):
            for dst in move.move_dest_ids:
                if dst.id not in seen:
                    seen.add(dst.id)
                    _rollup_move_dests(dst, seen)
            return seen

        def _reconcile_out_with_ins(lines, out, ins, demand, only_matching_move_dest=True):
            index_to_remove = []
            for index, in_ in enumerate(ins):
                if float_is_zero(in_['qty'], precision_rounding=out.product_id.uom_id.rounding):
                    continue
                if only_matching_move_dest and in_['move_dests'] and out.id not in in_['move_dests']:
                    continue
                taken_from_in = min(demand, in_['qty'])
                demand -= taken_from_in
                lines.append(self._prepare_report_line(taken_from_in, move_in=in_['move'], move_out=out))
                in_['qty'] -= taken_from_in
                if in_['qty'] <= 0:
                    index_to_remove.append(index)
                if float_is_zero(demand, precision_rounding=out.product_id.uom_id.rounding):
                    break
            for index in index_to_remove[::-1]:
                ins.pop(index)
            return demand

        in_domain, out_domain = self._move_confirmed_domain(
            product_template_ids, product_variant_ids, wh_location_ids
        )
        outs = self.env['stock.move'].search(out_domain, order='priority desc, date, id')
        outs_per_product = defaultdict(lambda: [])
        for out in outs:
            outs_per_product[out.product_id.id].append(out)
        ins = self.env['stock.move'].search(in_domain, order='priority desc, date, id')
        ins_per_product = defaultdict(lambda: [])
        for in_ in ins:
            ins_per_product[in_.product_id.id].append({
                'qty': in_.product_qty,
                'move': in_,
                'move_dests': _rollup_move_dests(in_, set())
            })
        currents = {c['id']: c['qty_available'] for c in outs.product_id.read(['qty_available'])}

        lines = []
        for product in (ins | outs).product_id:
            for out in outs_per_product[product.id]:
                if out.state not in ('partially_available', 'assigned'):
                    continue
                current = currents[out.product_id.id]
                reserved = out.product_uom._compute_quantity(out.reserved_availability, product.uom_id)
                currents[product.id] -= reserved
                lines.append(self._prepare_report_line(reserved, move_out=out, reservation=True))

            unreconciled_outs = []
            for out in outs_per_product[product.id]:
                # Reconcile with the current stock.
                current = currents[out.product_id.id]
                reserved = 0.0
                if out.state in ('partially_available', 'assigned'):
                    reserved = out.product_uom._compute_quantity(out.reserved_availability, product.uom_id)
                demand = out.product_qty - reserved
                taken_from_stock = min(demand, current)
                if not float_is_zero(taken_from_stock, precision_rounding=product.uom_id.rounding):
                    currents[product.id] -= taken_from_stock
                    demand -= taken_from_stock
                    lines.append(self._prepare_report_line(taken_from_stock, move_out=out))
                # Reconcile with the ins.
                if not float_is_zero(demand, precision_rounding=product.uom_id.rounding):
                    demand = _reconcile_out_with_ins(lines, out, ins_per_product[out.product_id.id], demand, only_matching_move_dest=True)
                if not float_is_zero(demand, precision_rounding=product.uom_id.rounding):
                    unreconciled_outs.append((demand, out))
            if unreconciled_outs:
                for (demand, out) in unreconciled_outs:
                    # Another pass, in case there are some ins linked to a dest move but that still have some quantity available
                    demand = _reconcile_out_with_ins(lines, out, ins_per_product[product.id], demand, only_matching_move_dest=False)
                    if not float_is_zero(demand, precision_rounding=product.uom_id.rounding):
                        # Not reconciled
                        lines.append(self._prepare_report_line(demand, move_out=out, replenishment_filled=False))
            # Unused remaining stock.
            free_stock = currents.get(product.id, 0)
            if not float_is_zero(free_stock, precision_rounding=product.uom_id.rounding):
                lines.append(self._prepare_report_line(free_stock, product=product))
            # In moves not used.
            for in_ in ins_per_product[product.id]:
                if float_is_zero(in_['qty'], precision_rounding=product.uom_id.rounding):
                    continue
                lines.append(self._prepare_report_line(in_['qty'], move_in=in_['move']))
        return lines

    @api.model
    def get_filter_state(self):
        res = {}
        res['warehouses'] = self.env['stock.warehouse'].search_read(fields=['id', 'name', 'code'])
        res['active_warehouse'] = self.env.context.get('warehouse', False)
        if not res['active_warehouse']:
            company_id = self.env.context.get('allowed_company_ids')[0]
            res['active_warehouse'] = self.env['stock.warehouse'].search([('company_id', '=', company_id)], limit=1).id
        return res


class ReplenishmentTemplateReport(models.AbstractModel):
    _name = 'report.stock.report_product_template_replenishment'
    _description = "Stock Replenishment Report"
    _inherit = 'report.stock.report_product_product_replenishment'

    @api.model
    def _get_report_values(self, docids, data=None):
        return {
            'data': data,
            'doc_ids': docids,
            'doc_model': 'product.product',
            'docs': self._get_report_data(product_template_ids=docids),
        }