add wizard for grouping invoices from purchase

__init__.py

@@ -18,6 +18,7 @@ def register():
         purchase.PurchaseAnalyticStart,
         purchase.PurchasesDetailedStart,
         purchase.PurchaseUpdateStart,
+        purchase.GroupingPurchasesStart,
         module='purchase_co', type_='model')
     Pool.register(
         account.PrintSupplierCertificate,
@@ -27,6 +28,7 @@ def register():
         purchase.PurchaseGenerateInvoice,
         purchase.PurchaseGenerateShipment,
         purchase.PurchaseUpdate,
+        purchase.GroupingPurchases,
         module='purchase_co', type_='wizard')
     Pool.register(
         account.PrintSupplierCertificateReport,

locale/es.po

@@ -1062,3 +1062,43 @@ msgstr "Cancelar"
 msgctxt "wizard_button:purchase_co.print_supplier_certificate,start,print_:"
 msgid "Ok"
 msgstr "Aceptar"
+
+msgctxt "field:purchase.grouping_purchases.start,company:"
+msgid "Company"
+msgstr "Empresa"
+
+msgctxt "field:purchase.grouping_purchases.start,currency:"
+msgid "Currency"
+msgstr "Moneda"
+
+msgctxt "field:purchase.grouping_purchases.start,end_date:"
+msgid "End Date"
+msgstr "Fin"
+
+msgctxt "field:purchase.grouping_purchases.start,start_date:"
+msgid "Start Date"
+msgstr "Inicio"
+
+msgctxt "field:purchase.grouping_purchases.start,supplier:"
+msgid "Supplier"
+msgstr "Proveedor"
+
+msgctxt "model:ir.ui.menu,name:menu_grouping_purchases"
+msgid "Create Invoice of Purchases"
+msgstr "Crear de Factura de Compras"
+
+msgctxt "model:ir.action,name:wizard_create_grouping_purchases"
+msgid "Grouping Purchases"
+msgstr "Facturacion de Compras Agrupadas"
+
+msgctxt "model:purchase.grouping_purchases.start,name:"
+msgid "Grouping Purchases Start"
+msgstr "Agrupación de Facturación Compras"
+
+msgctxt "wizard_button:purchase.grouping_purchases,start,accept:"
+msgid "Ok"
+msgstr "Aceptar"
+
+msgctxt "wizard_button:purchase.grouping_purchases,start,end:"
+msgid "Cancel"
+msgstr "Cancelar"

purchase.py

@@ -1,5 +1,6 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
+from itertools import chain
 from datetime import date, timedelta
 from decimal import Decimal
 from trytond.pyson import Eval, Not, Bool
@@ -677,3 +678,86 @@ class PurchaseUpdate(Wizard):
                         ('remove', [self.start.tax_remove.id])]})
             purchase.save()
         return 'end'
+
+
+class GroupingPurchasesStart(ModelView):
+    'Grouping Purchases Start'
+    __name__ = 'purchase.grouping_purchases.start'
+    company = fields.Many2One('company.company', 'Company', required=True)
+    supplier = fields.Many2One('party.party', 'Supplier', required=True)
+    currency = fields.Many2One('currency.currency', 'Currency', required=True)
+    start_date = fields.Date("Start Date", required=True)
+    end_date = fields.Date("End Date", required=True)
+
+    @staticmethod
+    def default_company():
+        return Transaction().context.get('company')
+
+
+class GroupingPurchases(Wizard):
+    'Grouping Purchases'
+    __name__ = 'purchase.grouping_purchases'
+    start = StateView(
+        'purchase.grouping_purchases.start',
+        'purchase_co.grouping_purchases_start_view_form', [
+            Button('Cancel', 'end', 'tryton-cancel'),
+            Button('Ok', 'accept', 'tryton-ok', default=True),
+        ])
+    accept = StateTransition()
+
+    def _create_invoice(self, lines, purchase):
+        invoice_lines = []
+        for line in lines:
+            line_ = line.get_invoice_line()
+            invoice_lines.append(line_)
+
+        invoice_lines = list(chain(*invoice_lines))
+        if not invoice_lines:
+            return
+
+        invoice = purchase._get_invoice_purchase()
+        if getattr(invoice, 'lines', None):
+            invoice_lines = list(invoice.lines) + invoice_lines
+        invoice.lines = invoice_lines
+        invoice.save()
+
+        invoice.update_taxes()
+        purchase.copy_resources_to(invoice)
+        return invoice
+
+    def get_domain(self):
+        return [
+            ('state', 'in', ['confirmed', 'processing', 'done']),
+            ('invoice_state', '=', 'none'),
+            ('party', '=', self.start.supplier.id),
+            ('currency', '=', self.start.currency.id),
+            ('delivery_date', '>=', self.start.start_date),
+            ('delivery_date', '<=', self.start.end_date),
+        ]
+
+    def get_order(self):
+        return []
+
+    def transition_accept(self):
+        pool = Pool()
+        Purchase = pool.get('purchase.purchase')
+        dom = self.get_domain()
+        if self.start.ica_certicate:
+            dom.append(
+                ('ica_certicate', '=', self.start.ica_certicate.id)
+            )
+
+        purchases = Purchase.search(dom, order=self.get_order())
+        if not purchases:
+            return 'end'
+
+        lines_to_bill = []
+        for purch in purchases:
+            if purch.invoices:
+                continue
+            for line in purch.lines:
+                lines_to_bill.append(line)
+
+        if lines_to_bill:
+            self._create_invoice(lines_to_bill, purchases[0])
+        return 'end'

purchase.xml

@@ -162,5 +162,17 @@ this repository contains the full copyright notices and license terms. -->
             <field name="model">purchase.purchase,-1</field>
             <field name="action" ref="act_purchase_update"/>
         </record>
+        <record model="ir.ui.view" id="grouping_purchases_start_view_form">
+            <field name="model">purchase.grouping_purchases.start</field>
+            <field name="type">form</field>
+            <field name="name">grouping_purchases_start_form</field>
+        </record>
+        <record model="ir.action.wizard" id="wizard_create_grouping_purchases">
+            <field name="name">Grouping Purchases</field>
+            <field name="wiz_name">purchase.grouping_purchases</field>
+        </record>
+        <menuitem name="Create Invoice of Purchases" parent="purchase.menu_purchase"
+            sequence="2" id="menu_grouping_purchases"
+            action="wizard_create_grouping_purchases"/>
     </data>
 </tryton>

view/grouping_purchases_start_form.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<form>
+    <label name="supplier"/>
+    <field name="supplier"/>
+    <label name="company"/>
+    <field name="company" widget="selection"/>
+    <label name="currency"/>
+    <field name="currency"/>
+    <label name="start_date"/>
+    <field name="start_date"/>
+    <label name="end_date"/>
+    <field name="end_date"/>
+</form>