# Part of Odoo. See LICENSE file for full copyright and licensing details.
# Original Copyright 2015 Eezee-It, modified and maintained by Odoo.

import json
import logging

from werkzeug import urls

from odoo import _, api, models
from odoo.exceptions import ValidationError

from odoo.addons.payment import utils as payment_utils
from odoo.addons.payment_sips.controllers.main import SipsController
from .const import RESPONSE_CODES_MAPPING, SUPPORTED_CURRENCIES

_logger = logging.getLogger(__name__)


class PaymentTransaction(models.Model):
    _inherit = 'payment.transaction'

    @api.model
    def _compute_reference(self, provider, prefix=None, separator='-', **kwargs):
        """ Override of payment to ensure that Sips requirements for references are satisfied.

        Sips requirements for transaction are as follows:
        - References can only be made of alphanumeric characters.
          This is satisfied by forcing the custom separator to 'x' to ensure that no '-' character
          will be used to append a suffix. Additionally, the prefix is sanitized if it was provided,
          and generated with 'tx' as default otherwise. This prevents the prefix to be generated
          based on document names that may contain non-alphanum characters (eg: INV/2020/...).
        - References must be unique at provider level for a given merchant account.
          This is satisfied by singularizing the prefix with the current datetime. If two
          transactions are created simultaneously, `_compute_reference` ensures the uniqueness of
          references by suffixing a sequence number.

        :param str provider: The provider of the acquirer handling the transaction
        :param str prefix: The custom prefix used to compute the full reference
        :param str separator: The custom separator used to separate the prefix from the suffix
        :return: The unique reference for the transaction
        :rtype: str
        """
        if provider == 'sips':
            # We use an empty separator for cosmetic reasons: As the default prefix is 'tx', we want
            # the singularized prefix to look like 'tx2020...' and not 'txx2020...'.
            prefix = payment_utils.singularize_reference_prefix(separator='')
            separator = 'x'  # Still, we need a dedicated separator between the prefix and the seq.
        return super()._compute_reference(provider, prefix=prefix, separator=separator, **kwargs)

    def _get_specific_rendering_values(self, processing_values):
        """ Override of payment to return Sips-specific rendering values.

        Note: self.ensure_one() from `_get_processing_values`

        :param dict processing_values: The generic and specific processing values of the transaction
        :return: The dict of acquirer-specific processing values
        :rtype: dict
        """
        res = super()._get_specific_rendering_values(processing_values)
        if self.provider != 'sips':
            return res

        base_url = self.get_base_url()
        data = {
            'amount': payment_utils.to_minor_currency_units(self.amount, self.currency_id),
            'currencyCode': SUPPORTED_CURRENCIES[self.currency_id.name],  # The ISO 4217 code
            'merchantId': self.acquirer_id.sips_merchant_id,
            'normalReturnUrl': urls.url_join(base_url, SipsController._return_url),
            'automaticResponseUrl': urls.url_join(base_url, SipsController._notify_url),
            'transactionReference': self.reference,
            'statementReference': self.reference,
            'keyVersion': self.acquirer_id.sips_key_version,
            'returnContext': json.dumps(dict(reference=self.reference)),
        }
        api_url = self.acquirer_id.sips_prod_url if self.acquirer_id.state == 'enabled' \
            else self.acquirer_id.sips_test_url
        data = '|'.join([f'{k}={v}' for k, v in data.items()])
        return {
            'api_url': api_url,
            'Data': data,
            'InterfaceVersion': self.acquirer_id.sips_version,
            'Seal': self.acquirer_id._sips_generate_shasign(data),
        }

    @api.model
    def _get_tx_from_feedback_data(self, provider, data):
        """ Override of payment to find the transaction based on Sips data.

        :param str provider: The provider of the acquirer that handled the transaction
        :param dict data: The feedback data sent by the provider
        :return: The transaction if found
        :rtype: recordset of `payment.transaction`
        :raise: ValidationError if the data match no transaction
        :raise: ValidationError if the currency is not supported
        :raise: ValidationError if the amount mismatch
        """
        tx = super()._get_tx_from_feedback_data(provider, data)
        if provider != 'sips':
            return tx

        data = self._sips_data_to_object(data['Data'])
        reference = data.get('transactionReference')

        if not reference:
            return_context = json.loads(data.get('returnContext', '{}'))
            reference = return_context.get('reference')

        tx = self.search([('reference', '=', reference), ('provider', '=', 'sips')])
        if not tx:
            raise ValidationError(
                "Sips: " + _("No transaction found matching reference %s.", reference)
            )

        sips_currency = SUPPORTED_CURRENCIES.get(tx.currency_id.name)
        if not sips_currency:
            raise ValidationError(
                "Sips: " + _("This currency is not supported: %s.", tx.currency_id.name)
            )

        amount_converted = payment_utils.to_major_currency_units(
            float(data.get('amount', '0.0')), tx.currency_id
        )
        if tx.currency_id.compare_amounts(amount_converted, tx.amount) != 0:
            raise ValidationError(
                "Sips: " + _(
                    "Incorrect amount: received %(received).2f, expected %(expected).2f",
                    received=amount_converted, expected=tx.amount
                )
            )
        return tx

    def _process_feedback_data(self, data):
        """ Override of payment to process the transaction based on Sips data.

        Note: self.ensure_one()

        :param dict data: The feedback data sent by the provider
        :return: None
        """
        super()._process_feedback_data(data)
        if self.provider != 'sips':
            return

        data = self._sips_data_to_object(data.get('Data'))
        self.acquirer_reference = data.get('transactionReference')
        response_code = data.get('responseCode')
        if response_code in RESPONSE_CODES_MAPPING['pending']:
            status = "pending"
            self._set_pending()
        elif response_code in RESPONSE_CODES_MAPPING['done']:
            status = "done"
            self._set_done()
        elif response_code in RESPONSE_CODES_MAPPING['cancel']:
            status = "cancel"
            self._set_canceled()
        else:
            status = "error"
            self._set_error(_("Unrecognized response received from the payment provider."))
        _logger.info(
            "ref: %s, got response [%s], set as '%s'.", self.reference, response_code, status
        )

    def _sips_data_to_object(self, data):
        res = {}
        for element in data.split('|'):
            key, value = element.split('=', 1)
            res[key] = value
        return res