From 14f3cc27750fc6cae5442f22847e84c7a2e74ae1 Mon Sep 17 00:00:00 2001
From: Ronald Portier <ronald@therp.nl>
Date: Thu, 6 Jun 2019 01:32:08 +0200
Subject: [PATCH] [10.0][IMP] contract. Enable automatic invoice generation
 before invoice date. (#282)

* [IMP] contract. Enable automatic invoice generation before invoice date.

* [IMP] contract pregenerate - improvements after review.
---
 contract/__manifest__.py                    |  3 +-
 contract/models/__init__.py                 |  3 +-
 contract/models/account_analytic_account.py | 34 +++++++++++++++------
 contract/models/res_company.py              | 14 +++++++++
 contract/views/res_company.xml              | 14 +++++++++
 5 files changed, 57 insertions(+), 11 deletions(-)
 create mode 100644 contract/models/res_company.py
 create mode 100644 contract/views/res_company.xml

diff --git a/contract/__manifest__.py b/contract/__manifest__.py
index 54250c1c..70ff7890 100644
--- a/contract/__manifest__.py
+++ b/contract/__manifest__.py
@@ -5,7 +5,7 @@
 # Copyright 2016-2017 Tecnativa - Carlos Dauden
 # Copyright 2017 Tecnativa - Vicent Cubells
 # Copyright 2016-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 
 {
     'name': 'Contracts Management - Recurring',
@@ -29,6 +29,7 @@
         'views/account_analytic_contract_view.xml',
         'views/account_invoice_view.xml',
         'views/res_partner_view.xml',
+        'views/res_company.xml',
     ],
     'installable': True,
 }
diff --git a/contract/models/__init__.py b/contract/models/__init__.py
index 7d711125..34080941 100644
--- a/contract/models/__init__.py
+++ b/contract/models/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 
 from . import account_analytic_contract
 from . import account_analytic_account
@@ -7,3 +7,4 @@ from . import account_analytic_contract_line
 from . import account_analytic_invoice_line
 from . import account_invoice
 from . import res_partner
+from . import res_company
diff --git a/contract/models/account_analytic_account.py b/contract/models/account_analytic_account.py
index 3eabbbf5..b604d1eb 100644
--- a/contract/models/account_analytic_account.py
+++ b/contract/models/account_analytic_account.py
@@ -4,15 +4,17 @@
 # Copyright 2015 Pedro M. Baeza <pedro.baeza@tecnativa.com>
 # Copyright 2016-2017 Carlos Dauden <carlos.dauden@tecnativa.com>
 # Copyright 2016-2017 LasLabs Inc.
-# Copyright 2018 Therp BV <https://therp.nl>.
+# Copyright 2018-2019 Therp BV <https://therp.nl>.
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 # pylint: disable=no-member
 
+from datetime import datetime
 from dateutil.relativedelta import relativedelta
 
 from odoo import api, fields, models
 from odoo.exceptions import ValidationError
 from odoo.tools.translate import _
+from odoo.tools import DEFAULT_SERVER_DATE_FORMAT
 
 
 class AccountAnalyticAccount(models.Model):
@@ -341,14 +343,28 @@ class AccountAnalyticAccount(models.Model):
 
     @api.model
     def cron_recurring_create_invoice(self, limit=None):
-        today = fields.Date.today()
-        contracts = self.with_context(cron=True).search([
-            ('recurring_invoices', '=', True),
-            ('recurring_next_date', '<=', today),
-            '|',
-            ('date_end', '=', False),
-            ('date_end', '>=', today),
-        ])
+        """Generate invoices.
+
+        Invoices can be generated a specified number of days before the
+        invoice date, to allow the user to check the invoices before
+        confirmation, or to send out the invoices to the customers before
+        the invoice date.
+        """
+        today = datetime.today()
+        company_model = self.env['res.company']
+        for company in company_model.search([]):
+            days_before = company.contract_pregenerate_days or 0
+            cutoffdate = (
+                today + relativedelta(days=days_before)
+            ).strftime(DEFAULT_SERVER_DATE_FORMAT)
+            contracts = self.with_context(cron=True).search([
+                ('company_id', '=', company.id),
+                ('recurring_invoices', '=', True),
+                ('recurring_next_date', '<=', cutoffdate),
+                '|',
+                ('date_end', '=', False),
+                ('date_end', '>=', cutoffdate),
+            ])
         return contracts.recurring_create_invoice(limit)
 
     @api.multi
diff --git a/contract/models/res_company.py b/contract/models/res_company.py
new file mode 100644
index 00000000..d2b94153
--- /dev/null
+++ b/contract/models/res_company.py
@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 - Therp BV <https://therp.nl>.
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from odoo import fields, models
+
+
+class ResCompany(models.Model):
+    _inherit = 'res.company'
+
+    contract_pregenerate_days = fields.Integer(
+        string='Days to prepare invoices',
+        help="Days before next invoice date to generate draft invoices.\n"
+             "This allows users to check the invoices before confirmation,\n"
+             " and to send invoices to customers, before the invoice date.")
diff --git a/contract/views/res_company.xml b/contract/views/res_company.xml
new file mode 100644
index 00000000..bbfa1de8
--- /dev/null
+++ b/contract/views/res_company.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="view_company_form" model="ir.ui.view">
+        <field name="inherit_id" ref="base.view_company_form" />
+        <field name="model">res.company</field>
+        <field type="xml" name="arch">
+            <field name="currency_id" position="after">
+                <field name="contract_pregenerate_days" />
+            </field>
+        </field>
+    </record>
+
+</odoo>