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modules/edocument_unece/account.py

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+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import fields
+from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Bool, Eval
+
+
+class Tax(metaclass=PoolMeta):
+    __name__ = 'account.tax'
+
+    unece_code = fields.Selection([
+            (None, ''),
+            ('AAA', "Petroleum tax"),
+            ('AAB', "Provisional countervailing duty cash"),
+            ('AAC', "Provisional countervailing duty bond"),
+            ('AAD', "Tobacco tax"),
+            ('AAE', "Energy fee"),
+            ('AAF', "Coffee tax"),
+            ('AAG', "Harmonised sales tax, Canadian"),
+            ('AAH', "Quebec sales tax"),
+            ('AAI', "Canadian provincial sales tax"),
+            ('AAJ', "Tax on replacement part"),
+            ('AAK', "Mineral oil tax"),
+            ('AAL', "Special tax"),
+            ('AAM', "Insurance tax"),
+            ('ADD', "Anti-dumping duty"),
+            ('BOL', "Stamp duty (Imposta di Bollo)"),
+            ('CAP', "Agricultural levy"),
+            ('CAR', "Car tax"),
+            ('COC', "Paper consortium tax (Italy)"),
+            ('CST', "Commodity specific tax"),
+            ('CUD', "Customs duty"),
+            ('CVD', "Countervailing duty"),
+            ('ENV', "Environmental tax"),
+            ('EXC', "Excise duty"),
+            ('EXP', "Agricultural export rebate"),
+            ('FET', "Federal excise tax"),
+            ('FRE', "Free"),
+            ('GCN', "General construction tax"),
+            ('GST', "Goods and services tax"),
+            ('ILL', "Illuminants tax"),
+            ('IMP', "Import tax"),
+            ('IND', "Individual tax"),
+            ('LAC', "Business license fee"),
+            ('LCN', "Local construction tax"),
+            ('LDP', "Light dues payable"),
+            ('LOC', "Local sales tax"),
+            ('LST', "Lust tax"),
+            ('MCA', "Monetary compensatory amount"),
+            ('MCD', "Miscellaneous cash deposit"),
+            ('OTH', "Other taxes"),
+            ('PDB', "Provisional duty bond"),
+            ('PDC', "Provisional duty cash"),
+            ('PRF', "Preference duty"),
+            ('SCN', "Special construction tax"),
+            ('SSS', "Shifted social securities"),
+            ('STT', "State/provincial sales tax"),
+            ('SUP', "Suspended duty"),
+            ('SUR', "Surtax"),
+            ('SWT', "Shifted wage tax"),
+            ('TAC', "Alcohol mark tax"),
+            ('TOT', "Total"),
+            ('TOX', "Turnover tax"),
+            ('TTA', "Tonnage taxes"),
+            ('VAD', "Valuation deposit"),
+            ('VAT', "Value added tax"),
+            ], "UNECE Code",
+        states={
+            'readonly': (Bool(Eval('template', -1))
+                & ~Eval('template_override', False)),
+            },
+        help="Standard code of "
+        "the United Nations Economic Commission for Europe.")
+    unece_category_code = fields.Selection([
+            (None, ''),
+            ('A', "Mixed tax rate"),
+            ('AA', "Lower rate"),
+            ('AB', "Exempt for resale"),
+            ('AC', "Value Added Tax (VAT) not now due for payment"),
+            ('AD', "Value Added Tax (VAT) due from a previous invoice"),
+            ('AE', "VAT Reverse Charge"),
+            ('B', "Transferred (VAT)"),
+            ('C', "Duty paid by supplier"),
+            ('D', "Value Added Tax (VAT) margin scheme - travel agents"),
+            ('E', "Exempt from tax"),
+            ('F', "Value Added Tax (VAT) margin scheme - second-hand goods"),
+            ('G', "Free export item, tax not charged"),
+            ('H', "Higher rate"),
+            ('I', "Value Added Tax (VAT) margin scheme - works of art"),
+            ('J', "Value Added Tax (VAT) margin scheme - "
+                "collector's items and antiques"),
+            ('K', "VAT exempt for EEA intra-community supply of "
+                "goods and services"),
+            ('L', "Canary Islands general indirect tax"),
+            ('M', "Tax for production, services and importation in "
+                "Ceuta and Melilla"),
+            ('O', "Services outside scope of tax"),
+            ('S', "Standard rate"),
+            ('Z', "Zero rated goods"),
+            ], "UNECE Category Code",
+        states={
+            'readonly': (Bool(Eval('template', -1))
+                & ~Eval('template_override', False)),
+            },
+        help="Standard code of "
+        "the United Nations Economic Commission for Europe.")
+
+
+class TaxTemplate(metaclass=PoolMeta):
+    __name__ = 'account.tax.template'
+
+    unece_code = fields.Selection('get_unece_codes', "UNECE Code")
+    unece_category_code = fields.Selection(
+        'get_unece_category_code', "UNECE Category Code")
+
+    @classmethod
+    def get_unece_codes(cls):
+        pool = Pool()
+        Tax = pool.get('account.tax')
+        return Tax.fields_get(['unece_code'])['unece_code']['selection']
+
+    @classmethod
+    def get_unece_category_code(cls):
+        pool = Pool()
+        Tax = pool.get('account.tax')
+        return Tax.fields_get(
+            ['unece_category_code'])['unece_category_code']['selection']
+
+    def _get_tax_value(self, tax=None):
+        value = super()._get_tax_value(tax=tax)
+        for field in ['unece_code', 'unece_category_code']:
+            if not tax or getattr(tax, field) != getattr(self, field):
+                value[field] = getattr(self, field)
+        return value