# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from datetime import date, timedelta

import requests

from html import unescape
from markupsafe import Markup

from odoo import models, api, service
from odoo.tools.translate import _
from odoo.exceptions import UserError
from odoo.tools import DEFAULT_SERVER_DATETIME_FORMAT, misc


class MercuryTransaction(models.Model):
    _name = 'pos_mercury.mercury_transaction'
    _description = 'Point of Sale Vantiv Transaction'

    def _get_pos_session(self):
        pos_session = self.env['pos.session'].search([('state', '=', 'opened'), ('user_id', '=', self.env.uid)], limit=1)
        if not pos_session:
            raise UserError(_("No opened point of sale session for user %s found.", self.env.user.name))

        pos_session.login()

        return pos_session

    def _get_pos_mercury_config_id(self, config, payment_method_id):
        payment_method = config.current_session_id.payment_method_ids.filtered(lambda pm: pm.id == payment_method_id)

        if payment_method and payment_method.pos_mercury_config_id:
            return payment_method.pos_mercury_config_id
        else:
            raise UserError(_("No Vantiv configuration associated with the payment method."))

    def _setup_request(self, data):
        # todo: in master make the client include the pos.session id and use that
        pos_session = self._get_pos_session()

        config = pos_session.config_id
        pos_mercury_config = self._get_pos_mercury_config_id(config, data['payment_method_id'])

        data['operator_id'] = pos_session.user_id.login
        data['merchant_id'] = pos_mercury_config.sudo().merchant_id
        data['merchant_pwd'] = pos_mercury_config.sudo().merchant_pwd
        data['memo'] = "Odoo " + service.common.exp_version()['server_version']

    def _do_request(self, template, data):
        if not data['merchant_id'] or not data['merchant_pwd']:
            return "not setup"

        # transaction is str()'ed so it's escaped inside of <mer:tran>
        xml_transaction = Markup('''<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:mer="http://www.mercurypay.com">
  <soapenv:Header/>
  <soapenv:Body>
    <mer:CreditTransaction>
      <mer:tran>{transaction}</mer:tran>
      <mer:pw>{password}</mer:pw>
    </mer:CreditTransaction>
  </soapenv:Body>
</soapenv:Envelope>''').format(transaction=str(self.env['ir.qweb']._render(template, data)), password=data['merchant_pwd'])

        response = ''

        headers = {
            'Content-Type': 'text/xml',
            'SOAPAction': 'http://www.mercurypay.com/CreditTransaction',
        }

        url = 'https://w1.mercurypay.com/ws/ws.asmx'
        if self.env['ir.config_parameter'].sudo().get_param('pos_mercury.enable_test_env'):
            url = 'https://w1.mercurycert.net/ws/ws.asmx'

        try:
            r = requests.post(url, data=xml_transaction, headers=headers, timeout=65)
            r.raise_for_status()
            response = unescape(r.content.decode())
        except Exception:
            response = "timeout"

        return response

    def _do_reversal_or_voidsale(self, data, is_voidsale):
        try:
            self._setup_request(data)
        except UserError:
            return "internal error"

        data['is_voidsale'] = is_voidsale
        response = self._do_request('pos_mercury.mercury_voidsale', data)
        return response

    @api.model
    def do_payment(self, data):
        try:
            self._setup_request(data)
        except UserError:
            return "internal error"

        response = self._do_request('pos_mercury.mercury_transaction', data)
        return response

    @api.model
    def do_reversal(self, data):
        return self._do_reversal_or_voidsale(data, False)

    @api.model
    def do_voidsale(self, data):
        return self._do_reversal_or_voidsale(data, True)

    def do_return(self, data):
        try:
            self._setup_request(data)
        except UserError:
            return "internal error"

        response = self._do_request('pos_mercury.mercury_return', data)
        return response