[ADD] accounting_update: allow zero quantity on invoice lines for tax reporting

accounting_update/__init__.py

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+from . import models
+from . import tests

accounting_update/__manifest__.py

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+{
+    "name": "Account Update",
+    "author": "Shrey Patel",
+    "depends": ["l10n_in_edi"],
+    "license": "LGPL-3",
+    "data": [
+        "views/accounting_move_views.xml",
+    ],
+}

accounting_update/models/__init__.py

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+from . import account_move
+from . import account_move_line

accounting_update/models/account_move.py

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+from odoo import models
+
+
+class AccountMove(models.Model):
+    _inherit = "account.move"
+
+    def _get_l10n_in_edi_line_details(self, index, line, line_tax_details):
+        line_details = super()._get_l10n_in_edi_line_details(
+            index, line, line_tax_details
+        )
+        if line.is_zero_qty:
+            line_details["Qty"] = 0.0
+        return line_details

accounting_update/models/account_move_line.py

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+from odoo import models, fields
+
+
+class AccountMoveLine(models.Model):
+    _inherit = "account.move.line"
+
+    is_zero_qty = fields.Boolean()

accounting_update/tests/__init__.py

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+from . import test_edi_json_zero_qty

accounting_update/tests/test_edi_json_zero_qty.py

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+from freezegun import freeze_time
+
+from odoo.addons.l10n_in.tests.common import L10nInTestInvoicingCommon
+from odoo.tests import tagged
+from odoo import fields
+
+
+@tagged("post_install", "-at_install")
+class TestEdiJsonZeroQty(L10nInTestInvoicingCommon):
+
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.partner_a.l10n_in_gst_treatment = "regular"
+        cls.invoice_with_zero_qty = cls._create_invoice_one_line(
+            product_id=cls.product_a, invoice_date=fields.Date.from_string("2019-01-01")
+        )
+        cls.invoice_with_zero_qty.write(
+            {
+                "invoice_line_ids": [
+                    (1, l_id, {"is_zero_qty": True})
+                    for l_id in cls.invoice_with_zero_qty.invoice_line_ids.ids
+                ]
+            }
+        )
+        cls.invoice_with_zero_qty.action_post()
+        with freeze_time("2023-12-25"):
+            cls.credit_note_with_zero_qty = cls.invoice_with_zero_qty._reverse_moves()
+            cls.credit_note_with_zero_qty.action_post()
+
+        cls.invoice_without_zero_qty = cls._create_invoice_one_line(
+            product_id=cls.product_a, invoice_date=fields.Date.from_string("2019-01-01")
+        )
+        cls.invoice_without_zero_qty.action_post()
+        with freeze_time("2023-12-25"):
+            cls.credit_note_without_zero_qty = (
+                cls.invoice_without_zero_qty._reverse_moves()
+            )
+            cls.credit_note_without_zero_qty.action_post()
+
+    def test_edi_json(self):
+        # line1: 1000 and a tax of 5%
+        # 1000 * 1.05 = 1050
+        # total tax: 50
+        expected = {
+            "Version": "1.1",
+            "TranDtls": {
+                "TaxSch": "GST",
+                "SupTyp": "B2B",
+                "RegRev": "N",
+                "IgstOnIntra": "N",
+            },
+            "DocDtls": {"Typ": "INV", "No": "INV/18-19/0001", "Dt": "01/01/2019"},
+            "SellerDtls": {
+                "Addr1": "Khodiyar Chowk",
+                "Loc": "Amreli",
+                "Pin": 365220,
+                "Stcd": "24",
+                "Addr2": "Sala Number 3",
+                "LglNm": "Default Company",
+                "GSTIN": "24AAGCC7144L6ZE",
+            },
+            "BuyerDtls": {
+                "Addr1": "Karansinhji Rd",
+                "Loc": "Rajkot",
+                "Pin": 360001,
+                "Stcd": "24",
+                "Addr2": "Karanpara",
+                "POS": "24",
+                "LglNm": "Partner Intra State",
+                "GSTIN": "24ABCPM8965E1ZE",
+            },
+            "ItemList": [
+                {
+                    "SlNo": "1",
+                    "PrdDesc": "product_a",
+                    "IsServc": "N",
+                    "HsnCd": "111111",
+                    "Qty": 0.0,
+                    "Unit": "UNT",
+                    "UnitPrice": 1000.0,
+                    "TotAmt": 1000.0,
+                    "Discount": 0.0,
+                    "AssAmt": 1000.0,
+                    "GstRt": 5.0,
+                    "IgstAmt": 0.0,
+                    "CgstAmt": 25.0,
+                    "SgstAmt": 25.0,
+                    "CesRt": 0.0,
+                    "CesAmt": 0.0,
+                    "CesNonAdvlAmt": 0.0,
+                    "StateCesRt": 0.0,
+                    "StateCesAmt": 0.0,
+                    "StateCesNonAdvlAmt": 0.0,
+                    "OthChrg": 0.0,
+                    "TotItemVal": 1050.0,
+                },
+            ],
+            "ValDtls": {
+                "AssVal": 1000.0,
+                "CgstVal": 25.0,
+                "SgstVal": 25.0,
+                "IgstVal": 0.0,
+                "CesVal": 0.0,
+                "StCesVal": 0.0,
+                "Discount": 0.0,
+                "RndOffAmt": 0.0,
+                "TotInvVal": 1050.0,
+            },
+        }
+
+        with self.subTest(scenario="Invoice with zero qty"):
+            json_value = self.invoice_with_zero_qty._l10n_in_edi_generate_invoice_json()
+            self.assertDictEqual(
+                json_value,
+                expected,
+                "Indian EDI with zero qty json value is not matched",
+            )
+
+        with self.subTest(scenario="Credit Note with zero qty"):
+            expected.update(
+                {
+                    "DocDtls": {
+                        "Typ": "CRN",
+                        "No": "RINV/23-24/0001",
+                        "Dt": "25/12/2023",
+                    }
+                }
+            )
+            self.assertDictEqual(
+                self.credit_note_with_zero_qty._l10n_in_edi_generate_invoice_json(),
+                expected,
+                "Indian E-invoice Credit note with zero qty json value is not matched",
+            )
+
+        with self.subTest(scenario="Invoice without zero qty"):
+            expected.update(
+                {
+                    "DocDtls": {
+                        "Typ": "INV",
+                        "No": "INV/18-19/0002",
+                        "Dt": "01/01/2019",
+                    },
+                    "ItemList": [
+                        {
+                            "SlNo": "1",
+                            "PrdDesc": "product_a",
+                            "IsServc": "N",
+                            "HsnCd": "111111",
+                            "Qty": 1.0,
+                            "Unit": "UNT",
+                            "UnitPrice": 1000.0,
+                            "TotAmt": 1000.0,
+                            "Discount": 0.0,
+                            "AssAmt": 1000.0,
+                            "GstRt": 5.0,
+                            "IgstAmt": 0.0,
+                            "CgstAmt": 25.0,
+                            "SgstAmt": 25.0,
+                            "CesRt": 0.0,
+                            "CesAmt": 0.0,
+                            "CesNonAdvlAmt": 0.0,
+                            "StateCesRt": 0.0,
+                            "StateCesAmt": 0.0,
+                            "StateCesNonAdvlAmt": 0.0,
+                            "OthChrg": 0.0,
+                            "TotItemVal": 1050.0,
+                        },
+                    ],
+                }
+            )
+            json_value = (
+                self.invoice_without_zero_qty._l10n_in_edi_generate_invoice_json()
+            )
+            self.assertDictEqual(
+                json_value,
+                expected,
+                "Indian E-invoice without zero qty json value is not matched",
+            )
+
+        with self.subTest(scenario="Credit Note without zero qty"):
+            expected.update(
+                {
+                    "DocDtls": {
+                        "Typ": "CRN",
+                        "No": "RINV/23-24/0002",
+                        "Dt": "25/12/2023",
+                    }
+                }
+            )
+            self.assertDictEqual(
+                self.credit_note_without_zero_qty._l10n_in_edi_generate_invoice_json(),
+                expected,
+                "Indian E-invoice Credit note without zero qty json value is not matched",
+            )

accounting_update/views/accounting_move_views.xml

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+<odoo>
+    <record id="view_move_form" model="ir.ui.view">
+        <field name="name">account.move.form.inherit.accounting_update</field>
+        <field name="model">account.move</field>
+        <field name="inherit_id" ref="account.view_move_form"/>
+        <field name="arch" type="xml">
+          <xpath expr="//list[@name='journal_items']/field[@name='tax_ids']" position="after">
+                <field name="is_zero_qty" optional="show" column_invisible="parent.move_type not in ('out_invoice', 'out_refund')"/>
+          </xpath>
+          <xpath expr="//field[@name='invoice_line_ids']/form//field[@name='tax_ids']" position="after">
+               <field name="is_zero_qty" optional="show" column_invisible="parent.move_type not in ('out_invoice', 'out_refund')"/>
+          </xpath>
+        </field>
+    </record>
+</odoo>