[ADD] Sequence check Digit (#1000)

* [ADD] Sequence check Digit

* Change of License to LGPL

* Code review

* Reviews

sequence_check_digit/README.rst

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+.. image:: https://img.shields.io/badge/licence-LGPL--3-blue.svg
+    :alt: License: LGPL-3
+
+====================
+Sequence Check Digit
+====================
+
+This module was written to configure check digits on sequences added on the end.
+It is useful as a control of the number on visual validation.
+
+It is useful when some manual checks are required or on integrations.
+The implemented codes can avoid modification of one character and flip of
+two consecutive characters.
+
+Usage
+=====
+
+* Access sequences and configurate the model to use.
+* The model will check if the format of prefix, suffix and number is valid
+* Implemented algorithms
+    * Luhn: [0-9]*
+    * Damm: [0-9]*
+    * Verhoeff: [0-9]*
+    * ISO 7064 Mod 11, 2: [0-9]*
+    * ISO 7064 Mod 11, 10: [0-9]*
+    * ISO 7064 Mod 37, 2: [0-9A-Z]*
+    * ISO 7064 Mod 37, 36: [0-9A-Z]*
+    * ISO 7064 Mod 97, 10: [0-9A-Z]*
+
+Credits
+=======
+
+Contributors
+------------
+
+* Enric Tobella <etobella@creublanca.es>
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+To contribute to this module, please visit https://odoo-community.org.

sequence_check_digit/__init__.py

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+# -*- coding: utf-8 -*-
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from . import models

sequence_check_digit/__manifest__.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2017 Creu Blanca
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+{
+    "name": "Check Digit on Sequences",
+    "version": "10.0.1.0.0",
+    "category": "Reporting",
+    "website": "https://github.com/OCA/server-tools",
+    "author": "Creu Blanca, "
+              "Odoo Community Association (OCA)",
+    "license": "LGPL-3",
+    "installable": True,
+    "application": False,
+    "summary": "Adds a check digit on sequences",
+    "depends": [
+        "base",
+    ],
+    "data": [
+        "views/sequence_views.xml",
+    ],
+    "external_dependencies": {
+        "python": [
+            "stdnum",
+        ],
+    },
+}

sequence_check_digit/i18n/es.po

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+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* sequence_check_digit
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 10.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2017-09-28 10:14+0000\n"
+"PO-Revision-Date: 2017-09-28 10:14+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: sequence_check_digit
+#: model:ir.model.fields,field_description:sequence_check_digit.field_ir_sequence_check_digit_formula
+msgid "Check digit formula"
+msgstr "Dígito de control"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "Damm"
+msgstr "Damm"
+
+#. module: sequence_check_digit
+#: code:addons/sequence_check_digit/models/ir_sequence.py:39
+#: code:addons/sequence_check_digit/models/ir_sequence.py:63
+#, python-format
+msgid "Format is not accepted"
+msgstr "El formato no está aceptado"
+
+#. module: sequence_check_digit
+#: code:addons/sequence_check_digit/models/ir_sequence.py:61
+#, python-format
+msgid "Function not found"
+msgstr "Función no encontrada"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "ISO 7064 Mod 11, 10"
+msgstr "ISO 7064 Mod 11, 10"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "ISO 7064 Mod 11, 2"
+msgstr "ISO 7064 Mod 11, 2"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "ISO 7064 Mod 37, 2"
+msgstr "ISO 7064 Mod 37, 2"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "ISO 7064 Mod 37, 36"
+msgstr "ISO 7064 Mod 37, 36"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "ISO 7064 Mod 97, 10"
+msgstr "ISO 7064 Mod 97, 10"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "Luhn"
+msgstr "Luhn"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "None"
+msgstr "Ninguno"
+
+#. module: sequence_check_digit
+#: selection:ir.sequence,check_digit_formula:0
+msgid "Verhoeff"
+msgstr "Verhoeff"
+
+#. module: sequence_check_digit
+#: model:ir.model,name:sequence_check_digit.model_ir_sequence
+msgid "ir.sequence"
+msgstr "ir.sequence"
+

sequence_check_digit/models/__init__.py

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+# -*- coding: utf-8 -*-
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from . import ir_sequence

sequence_check_digit/models/ir_sequence.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2017 Creu Blanca
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from odoo import fields, models, api, _
+from odoo.exceptions import ValidationError
+import logging
+
+try:
+    from stdnum.iso7064 import mod_97_10
+    from stdnum.iso7064 import mod_37_2, mod_37_36
+    from stdnum.iso7064 import mod_11_2, mod_11_10
+    from stdnum import luhn, damm, verhoeff
+except(ImportError, IOError) as err:
+    logging.info(err)
+
+
+class IrSequence(models.Model):
+    _inherit = "ir.sequence"
+
+    check_digit_formula = fields.Selection(
+        selection=[
+            ('none', 'None'),
+            ('luhn', 'Luhn'),
+            ('damm', 'Damm'),
+            ('verhoeff', 'Verhoeff'),
+            ('ISO7064_11_2', 'ISO 7064 Mod 11, 2'),
+            ('ISO7064_11_10', 'ISO 7064 Mod 11, 10'),
+            ('ISO7064_37_2', 'ISO 7064 Mod 37, 2'),
+            ('ISO7064_37_36', 'ISO 7064 Mod 37, 36'),
+            ('ISO7064_97_10', 'ISO 7064 Mod 97, 10'),
+        ], default='none'
+    )
+
+    @api.constrains('check_digit_formula', 'prefix', 'suffix')
+    def check_check_digit_formula(self):
+        try:
+            self.get_next_char(0)
+        except Exception:
+            raise ValidationError(_('Format is not accepted'))
+
+    def get_check_digit(self, code):
+        try:
+            return self.get_formula_map()[self.check_digit_formula](code)
+        except KeyError:
+            raise ValidationError(_('%s is not an implemented function'
+                                    % self.check_digit_formula))
+        except Exception:
+            raise ValidationError(_('Format is not accepted'))
+
+    def get_formula_map(self):
+        return {
+            'none': lambda _: '',
+            'luhn': luhn.calc_check_digit,
+            'damm': damm.calc_check_digit,
+            'verhoeff': verhoeff.calc_check_digit,
+            'ISO7064_11_2': mod_11_2.calc_check_digit,
+            'ISO7064_11_10': mod_11_10.calc_check_digit,
+            'ISO7064_37_2': mod_37_2.calc_check_digit,
+            'ISO7064_37_36': mod_37_36.calc_check_digit,
+            'ISO7064_97_10': mod_97_10.calc_check_digits
+        }
+
+    def get_next_char(self, number_next):
+        code = super(IrSequence, self).get_next_char(number_next)
+        if not self.check_digit_formula:
+            return code
+        return '%s%s' % (code, self.get_check_digit(code))

sequence_check_digit/tests/__init__.py

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+# -*- coding: utf-8 -*-
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from . import test_check_digit

sequence_check_digit/tests/test_check_digit.py

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+# -*- coding: utf-8 -*-
+# Copyright 2017 Creu Blanca <https://creublanca.es/>
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+
+from odoo.tests import common
+import logging
+from odoo.exceptions import ValidationError
+
+try:
+    from stdnum.iso7064 import mod_97_10
+    from stdnum.iso7064 import mod_37_2, mod_37_36
+    from stdnum.iso7064 import mod_11_2, mod_11_10
+    from stdnum import luhn, damm, verhoeff
+except(ImportError, IOError) as err:
+    logging.info(err)
+
+
+class TestSequenceCheckDigit(common.TransactionCase):
+    def get_sequence(self, method):
+        return self.env['ir.sequence'].create({
+            'name': 'Test sequence',
+            'implementation': 'standard',
+            'check_digit_formula': method,
+            'padding': '5'
+        })
+
+    def test_luhn(self):
+        sequence = self.get_sequence('luhn')
+        self.assertTrue(luhn.validate(sequence.next_by_id()))
+
+    def test_damm(self):
+        sequence = self.get_sequence('damm')
+        self.assertTrue(damm.validate(sequence.next_by_id()))
+
+    def test_verhoeff(self):
+        sequence = self.get_sequence('verhoeff')
+        self.assertTrue(verhoeff.validate(sequence.next_by_id()))
+
+    def test_mod_11_2(self):
+        sequence = self.get_sequence('ISO7064_11_2')
+        self.assertTrue(mod_11_2.validate(sequence.next_by_id()))
+
+    def test_mod11_10(self):
+        sequence = self.get_sequence('ISO7064_11_10')
+        self.assertTrue(mod_11_10.validate(sequence.next_by_id()))
+
+    def test_validation(self):
+        sequence = self.get_sequence('ISO7064_11_10')
+        with self.assertRaises(ValidationError):
+            sequence.prefix = 'A'
+        sequence.prefix = ''
+
+    def test_mod37_2(self):
+        sequence = self.get_sequence('ISO7064_37_2')
+        sequence.prefix = 'A'
+        self.assertTrue(mod_37_2.validate(sequence.next_by_id()))
+
+    def test_mod37_36(self):
+        sequence = self.get_sequence('ISO7064_37_36')
+        self.assertTrue(mod_37_36.validate(sequence.next_by_id()))
+
+    def test_mod97_10(self):
+        sequence = self.get_sequence('ISO7064_97_10')
+        self.assertTrue(mod_97_10.validate(sequence.next_by_id()))

sequence_check_digit/views/sequence_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+     <record id="sequence_view" model="ir.ui.view">
+        <field name="model">ir.sequence</field>
+        <field name="inherit_id" ref="base.sequence_view"/>
+        <field name="arch" type="xml">
+            <field name="implementation" position="after">
+                <field name="check_digit_formula"/>
+            </field>
+        </field>
+     </record>
+</odoo>