[ADD] sale_timesheet_purchase: bridge module

Add two smart buttons in project overview : purchase orders and vendor
bills, linking purchases and bills pointing to the project's analytic
account.

Task-1975022

addons/sale_timesheet_purchase/__init__.py

@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import models

addons/sale_timesheet_purchase/__manifest__.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+{
+    'name': 'Sales Timesheet Purchase',
+    'category': 'Hidden',
+    'summary': 'Bridge module between Sales Timesheet and Purchase',
+    'description': """
+Allows to access purchase orders from Project Overview
+======================================================
+""",
+    'depends': ['sale_timesheet', 'purchase'],
+    'data': [],
+    'demo': [],
+    'auto_install': True,
+    'uninstall_hook': 'uninstall_hook',
+}

addons/sale_timesheet_purchase/models/__init__.py

@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import project_overview

addons/sale_timesheet_purchase/models/project_overview.py

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+from odoo import _, models
+from odoo.addons.sale_timesheet.models.project_overview import _to_action_data
+
+
+class Project(models.Model):
+    _inherit = 'project.project'
+
+    def _plan_get_stat_button(self):
+        stat_buttons = super(Project, self)._plan_get_stat_button()
+        if self.env.user.has_group('purchase.group_purchase_user'):
+            accounts = self.mapped('analytic_account_id.id')
+            purchase_order_lines = self.env['purchase.order.line'].search([('account_analytic_id', 'in', accounts)])
+            purchase_orders = purchase_order_lines.mapped('order_id')
+            if purchase_orders:
+                stat_buttons.append({
+                    'name': _('Purchase Orders'),
+                    'count': len(purchase_orders),
+                    'icon': 'fa fa-shopping-cart',
+                    'action': _to_action_data('purchase.order',
+                        domain=[('id', 'in', purchase_orders.ids)],
+                        context={'create': False, 'edit': False, 'delete': False}
+                    )
+                })
+            account_invoice_lines = self.env['account.invoice.line'].search([('account_analytic_id', 'in', accounts)])
+            account_invoices = account_invoice_lines.mapped('invoice_id')
+            if account_invoices:
+                stat_buttons.append({
+                    'name': _('Vendor Bills'),
+                    'count': len(account_invoices),
+                    'icon': 'fa pencil-square-o',
+                    'action': _to_action_data(
+                        action=self.env.ref('purchase.action_invoice_pending'),
+                        domain=[('id', 'in', account_invoices.ids)],
+                        context={'create': False, 'edit': False, 'delete': False}
+                    )})
+
+        return stat_buttons