1 files changed, 55 insertions, 0 deletions
diff --git a/addons/l10n_in/models/account.py b/addons/l10n_in/models/account.py
new file mode 100644
index 00000000..bdc6e36d
--- /dev/null
+++ b/addons/l10n_in/models/account.py
@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError
+
+
+class AccountJournal(models.Model):
+    _inherit = "account.journal"
+
+    # Use for filter import and export type.
+    l10n_in_gstin_partner_id = fields.Many2one('res.partner', string="GSTIN Unit", ondelete="restrict", help="GSTIN related to this journal. If empty then consider as company GSTIN.")
+
+    def name_get(self):
+        """
+            Add GSTIN number in name as suffix so user can easily find the right journal.
+            Used super to ensure nothing is missed.
+        """
+        result = super().name_get()
+        result_dict = dict(result)
+        indian_journals = self.filtered(lambda j: j.company_id.country_id.code == 'IN' and
+            j.l10n_in_gstin_partner_id and j.l10n_in_gstin_partner_id.vat)
+        for journal in indian_journals:
+            name = result_dict[journal.id]
+            name += "- %s" % (journal.l10n_in_gstin_partner_id.vat)
+            result_dict[journal.id] = name
+        return list(result_dict.items())
+
+
+class AccountMoveLine(models.Model):
+    _inherit = "account.move.line"
+
+    @api.depends('move_id.line_ids', 'move_id.line_ids.tax_line_id', 'move_id.line_ids.debit', 'move_id.line_ids.credit')
+    def _compute_tax_base_amount(self):
+        aml = self.filtered(lambda l: l.company_id.country_id.code == 'IN' and l.tax_line_id  and l.product_id)
+        for move_line in aml:
+            base_lines = move_line.move_id.line_ids.filtered(lambda line: move_line.tax_line_id in line.tax_ids and move_line.product_id == line.product_id)
+            move_line.tax_base_amount = abs(sum(base_lines.mapped('balance')))
+        remaining_aml = self - aml
+        if remaining_aml:
+            return super(AccountMoveLine, remaining_aml)._compute_tax_base_amount()
+
+
+class AccountTax(models.Model):
+    _inherit = 'account.tax'
+
+    l10n_in_reverse_charge = fields.Boolean("Reverse charge", help="Tick this if this tax is reverse charge. Only for Indian accounting")
+
+    def get_grouping_key(self, invoice_tax_val):
+        """ Returns a string that will be used to group account.invoice.tax sharing the same properties"""
+        key = super(AccountTax, self).get_grouping_key(invoice_tax_val)
+        if self.company_id.country_id.code == 'IN':
+            key += "-%s-%s"% (invoice_tax_val.get('l10n_in_product_id', False),
+                invoice_tax_val.get('l10n_in_uom_id', False))
+        return key