[16.0][ADD] currency_rate_update_nbu

currency_rate_update_nbu/README.rst

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+========================
+Currency Rate Update NBU
+========================
+
+This module provides base for building exchange rates providers and bundles
+following built-in providers:
+
+ * **National Bank of Ukraine**:
+   the official currency rate of the Ukrainian hryvnia to foreign currencies.
+   Source in UAH, for more details see `corresponding
+   NBU page <https://bank.gov.ua/ua/open-data/api-dev>`_.
+
+This module is compatible with ``currency_rate_inverted`` module provided by
+OCA, that allows to maintain exchange rates in inverted format, helping to
+resolve rounding issues.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Configuration
+=============
+
+To enable scheduled currency rates update:
+
+# Go to *Invoicing > Configuration > Settings*
+# Ensure *Automatic Currency Rates (OCA)* is checked
+
+To configure currency rates providers:
+
+# Go to *Invoicing > Configuration > Currency Rates Providers*
+# The default NBU provider will be added during module installation with two
+available currencies: USD, EUR.
+
+Usage
+=====
+
+To update historical currency rates:
+
+# Go to *Invoicing > Configuration > Currency Rates Providers*
+# Select the "National Bank of Ukraine" provider
+# Add or remove available currencies if you need.
+# Launch *Actions > Update Rates Wizard*
+# Configure date interval and click *Update*
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/l10n-ukraine/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/l10n-ukraine/issues/new?body=module:%20currency_rate_update_nbu%0Aversion:%2014.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* GarazdCreation
+
+Contributors
+~~~~~~~~~~~~
+
+* Yurii Razumovskyi <[email protected]>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+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.
+
+This module is part of the `OCA/l10n-ukraine <https://github.com/OCA/l10n-ukraine/tree/14.0/currency_rate_update_nbu>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

currency_rate_update_nbu/__init__.py

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+from . import models

currency_rate_update_nbu/__manifest__.py

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+# Copyright 2023 Garazd Creation (https://garazd.biz)
+# @author: Yurii Razumovskyi ([email protected])
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+{
+    "name": "Currency Rate Update NBU",
+    "version": "16.0.1.0.0",
+    "category": "Accounting & Finance",
+    "summary": "Allows to download currency exchange rates from "
+    "National Bank of Ukraine",
+    "author": "Garazd Creation, Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/l10n-ukraine",
+    "license": "AGPL-3",
+    "depends": [
+        "currency_rate_update",
+    ],
+    "data": [
+        "data/res_currency_rate_provider_data.xml",
+        "data/ir_config_parameter_data.xml",
+    ],
+    "installable": True,
+}

currency_rate_update_nbu/data/ir_config_parameter_data.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+
+    <record
+        id="param_currency_rate_provider_nbu"
+        model="ir.config_parameter"
+        forcecreate="True"
+    >
+        <field name="key">currency_rate_update_nbu.api_url</field>
+        <field name="value">https://bank.gov.ua/NBU_Exchange/exchange_site?json</field>
+    </record>
+
+</odoo>

currency_rate_update_nbu/data/res_currency_rate_provider_data.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+
+    <record id="res_currency_rate_provider_nbu" model="res.currency.rate.provider">
+        <field name="name">National Bank of Ukraine</field>
+        <field name="service">NBU</field>
+        <field
+            name="currency_ids"
+            eval="[(4, ref('base.USD')), (4, ref('base.EUR'))]"
+        />
+    </record>
+
+</odoo>

currency_rate_update_nbu/models/__init__.py

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+from . import res_currency_rate_provider_nbu

currency_rate_update_nbu/models/res_currency_rate_provider_nbu.py

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+# Copyright 2023 Garazd Creation (https://garazd.biz)
+# @author: Yurii Razumovskyi ([email protected])
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+import json
+import logging
+from collections import defaultdict
+from typing import List
+
+import dateutil.parser
+import requests
+from requests.exceptions import Timeout, TooManyRedirects
+
+from odoo import _, api, fields, models
+from odoo.exceptions import UserError
+from odoo.tools.float_utils import float_compare
+
+_logger = logging.getLogger(__name__)
+
+
+class ResCurrencyRateProviderNBU(models.Model):
+    """Implementation for National Bank of Ukraine"""
+
+    _inherit = "res.currency.rate.provider"
+
+    service = fields.Selection(
+        selection_add=[("NBU", "National Bank of Ukraine")],
+        ondelete={"NBU": "set default"},
+    )
+
+    def _get_supported_currencies(self):
+        self.ensure_one()
+        if self.service != "NBU":
+            return super()._get_supported_currencies()
+        # List of currencies obrained from:
+        # https://bank.gov.ua/NBUStatService/v1/statdirectory/exchange?json
+        return self._nbu_get_available_currencies()
+
+    def _nbu_process_request(self, params=None, headers=None):
+        try:
+            url = self.env["ir.config_parameter"].get_param(
+                "currency_rate_update_nbu.api_url"
+            )
+            response = requests.get(url=url, params=params, headers=headers, timeout=60)
+            response_data = json.loads(response.text)
+            if response.status_code != 200:
+                raise Exception(
+                    _(
+                        "Failed to fetch from https://bank.gov.ua/ "
+                        "with error code: %(code)s and error message: %(msg)s"
+                    )
+                    % {"code": response.status_code, "msg": response.reason}
+                )
+        except (ConnectionError, Timeout, TooManyRedirects) as e:
+            raise Exception(str(e)) from e
+        return response_data
+
+    def _nbu_get_available_currencies(self):
+        """Get available currency list from NBU.
+        :return: list of currency codes
+        """
+        data = self._nbu_process_request()
+        return [cur["cc"] for cur in data]
+
+    def _nbu_get_rate(
+        self, currencies: List, date_from, date_to, invert_calculation=True
+    ):
+        """Get currency rates from NBU.
+        :param currencies: list or currency codes to return
+        :param date_from: date from which rates will be given
+        :param date_to: date to which rates will be given
+        :return: dict
+        """
+        content = defaultdict(dict)
+        params = {
+            "start": date_from.strftime("%Y%m%d"),
+            "end": date_to.strftime("%Y%m%d"),
+            "sort": "exchangedate",
+            "order": "asc",
+        }
+        data = self._nbu_process_request(params=params)
+        for line in data:
+            currency = line.get("cc")
+            if currency in currencies:
+                timestamp = fields.Date.to_string(
+                    dateutil.parser.parse(line.get("exchangedate"), dayfirst=True)
+                )
+                rate = float(line.get("rate", 0))
+                if invert_calculation:
+                    rate = 1.0 / rate
+                content[timestamp].update({currency: rate})
+        return content
+
+    @api.model
+    def _obtain_rates(self, base_currency, currencies, date_from, date_to):
+        self.ensure_one()
+        if self.service != "NBU":
+            return super()._obtain_rates(base_currency, currencies, date_from, date_to)
+        if base_currency != self.env.ref("base.UAH").name:
+            raise UserError(
+                _('The base company currency should be "UAH" to get NBU rates.')
+            )
+        if float_compare(self.env.ref("base.UAH").rate, 1.0, precision_digits=12) != 0:
+            raise UserError(_("The base company currency rate should be equal to 1.0"))
+        return self._nbu_get_rate(currencies, date_from, date_to)

currency_rate_update_nbu/readme/CONFIGURE.rst

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+To enable scheduled currency rates update:
+
+#. Go to *Invoicing > Configuration > Settings*
+#. Ensure *Automatic Currency Rates (OCA)* is checked
+
+To configure currency rates providers:
+
+#. Go to *Invoicing > Configuration > Currency Rates Providers*
+#. The default NBU provider will be added during module installation with two available currencies: USD, EUR.

currency_rate_update_nbu/readme/CONTRIBUTORS.rst

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+* `Garazd Creation <https://garazd.biz/>`__
+
+  * Yurii Razumovskyi <[email protected]>

currency_rate_update_nbu/readme/DESCRIPTION.rst

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+This module provides base for building exchange rates providers and bundles
+following built-in providers:
+
+ * **National Bank of Ukraine**:
+   the official currency rate of the Ukrainian hryvnia to foreign currencies.
+   Source in UAH, for more details see `corresponding
+   NBU page <https://bank.gov.ua/ua/open-data/api-dev>`_.
+
+This module is compatible with ``currency_rate_inverted`` module provided by
+OCA, that allows to maintain exchange rates in inverted format, helping to
+resolve rounding issues.

currency_rate_update_nbu/readme/USAGE.rst

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+To update historical currency rates:
+
+#. Go to *Invoicing > Configuration > Currency Rates Providers*
+#. Select the "National Bank of Ukraine" provider
+#. Add or remove available currencies if you need.
+#. Launch *Actions > Update Rates Wizard*
+#. Configure date interval and click *Update*

oca_dependencies.txt

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+# See https://github.com/OCA/odoo-community.org/blob/master/website/Contribution/CONTRIBUTING.rst#oca_dependencies-txt
+currency

setup/currency_rate_update_nbu/odoo/addons/currency_rate_update_nbu

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+../../../../currency_rate_update_nbu/

setup/currency_rate_update_nbu/setup.py

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+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)