From b378bc6f48d48ffb4381b14012dd0be822b888f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABl=20Valyi?= <rvalyi@akretion.com>
Date: Tue, 3 May 2022 04:09:00 -0300
Subject: [PATCH] down payment with original taxes

---
 sale_usability/__init__.py                    |  1 +
 sale_usability/wizard/__init__.py             |  1 +
 .../wizard/sale_make_invoice_advance.py       | 37 +++++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 sale_usability/wizard/__init__.py
 create mode 100644 sale_usability/wizard/sale_make_invoice_advance.py

diff --git a/sale_usability/__init__.py b/sale_usability/__init__.py
index 0650744f..9b429614 100644
--- a/sale_usability/__init__.py
+++ b/sale_usability/__init__.py
@@ -1 +1,2 @@
 from . import models
+from . import wizard
diff --git a/sale_usability/wizard/__init__.py b/sale_usability/wizard/__init__.py
new file mode 100644
index 00000000..fca48c3d
--- /dev/null
+++ b/sale_usability/wizard/__init__.py
@@ -0,0 +1 @@
+from . import sale_make_invoice_advance
diff --git a/sale_usability/wizard/sale_make_invoice_advance.py b/sale_usability/wizard/sale_make_invoice_advance.py
new file mode 100644
index 00000000..643da767
--- /dev/null
+++ b/sale_usability/wizard/sale_make_invoice_advance.py
@@ -0,0 +1,37 @@
+from odoo import models
+from odoo.tools import float_is_zero
+
+
+class SaleAdvancePaymentInv(models.TransientModel):
+    _inherit = "sale.advance.payment.inv"
+
+    def _prepare_invoice_values(self, order, name, amount, so_line):
+        """
+        Create as many invoice lines as order lines with their original
+        order line taxes. Lines quantities have the ratio of the advance payment.
+        """
+        invoice_vals = super()._prepare_invoice_values(order, name, amount, so_line)
+        lines = []
+        uom_precision_digits = self.env["decimal.precision"].precision_get(
+            "Product Unit of Measure"
+        )
+        for line in order.order_line:
+            if (
+                not float_is_zero(
+                    # avoids taking lines like previous advance payments
+                    line.product_uom_qty, precision_digits=uom_precision_digits
+                )
+            ):
+                lines.append((0, 0, {
+                    "name": name,
+                    "price_unit": line.price_unit,
+                    "quantity": line.product_uom_qty * amount / order.amount_total,
+                    "product_id": line.product_id.id,
+                    "product_uom_id": line.product_uom.id,
+                    "tax_ids": [(6, 0, line.tax_id.ids)],
+                    "sale_line_ids": [(6, 0, [line.id])],
+                    "analytic_tag_ids": [(6, 0, line.analytic_tag_ids.ids)],
+                    "analytic_account_id": order.analytic_account_id.id or False,
+                }))
+        invoice_vals["invoice_line_ids"] = lines
+        return invoice_vals