# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
import os
import unittest
from lxml import etree
from decimal import Decimal
from io import BytesIO, open

try:
    from unittest.mock import Mock, patch
except ImportError:
    from mock import Mock, patch

import trytond.tests.test_tryton
from trytond.tests.test_tryton import ModuleTestCase, with_transaction
from trytond.transaction import Transaction
from trytond.exceptions import UserError
from trytond.modules.account_payment_sepa.payment import CAMT054
from trytond.pool import Pool

from trytond.modules.currency.tests import create_currency
from trytond.modules.company.tests import create_company, set_company
from trytond.modules.account.tests import create_chart


def setup_environment():
    pool = Pool()
    Address = pool.get('party.address')
    Party = pool.get('party.party')
    Bank = pool.get('bank')

    currency = create_currency('EUR')
    company = create_company(currency=currency)
    company.party.sepa_creditor_identifier = 'BE68539007547034'
    company.party.save()
    bank_party = Party(name='European Bank')
    bank_party.save()
    bank = Bank(party=bank_party, bic='BICODEBBXXX')
    bank.save()
    customer = Party(name='Customer')
    address = Address(street='street', streetbis='street bis',
        zip='1234', city='City')
    customer.addresses = [address]
    customer.save()
    return {
        'company': company,
        'bank': bank,
        'customer': customer,
        }


def setup_accounts(bank, company, customer):
    pool = Pool()
    Account = pool.get('bank.account')
    return Account.create([{
                'bank': bank,
                'owners': [('add', [company.party])],
                'currency': company.currency.id,
                'numbers': [('create', [{
                                'type': 'iban',
                                'number': 'ES8200000000000000000000',
                                }])]}, {
                'bank': bank,
                'owners': [('add', [customer])],
                'currency': company.currency.id,
                'numbers': [('create', [{
                                'type': 'iban',
                                'number': 'ES3600000000050000000001',
                                }])]}])


def setup_mandate(company, customer, account):
    pool = Pool()
    Mandate = pool.get('account.payment.sepa.mandate')
    Date = pool.get('ir.date')
    return Mandate.create([{
                'company': company,
                'party': customer,
                'account_number': account.numbers[0],
                'identification': 'MANDATE',
                'type': 'recurrent',
                'signature_date': Date.today(),
                'state': 'validated',
                }])[0]


def setup_journal(flavor, kind, company, account):
    pool = Pool()
    Journal = pool.get('account.payment.journal')
    journal = Journal()
    journal.name = flavor
    journal.company = company
    journal.currency = company.currency
    journal.process_method = 'sepa'
    journal.sepa_bank_account_number = account.numbers[0]
    journal.sepa_payable_flavor = 'pain.001.001.03'
    journal.sepa_receivable_flavor = 'pain.008.001.02'
    setattr(journal, 'sepa_%s_flavor' % kind, flavor)
    journal.save()
    return journal


def validate_file(flavor, kind, xsd=None):
    'Test generated files are valid'
    pool = Pool()
    Payment = pool.get('account.payment')
    PaymentGroup = pool.get('account.payment.group')
    Date = pool.get('ir.date')
    ProcessPayment = pool.get('account.payment.process', type='wizard')

    if xsd is None:
        xsd = flavor

    environment = setup_environment()
    company = environment['company']
    bank = environment['bank']
    customer = environment['customer']
    with set_company(company):
        company_account, customer_account = setup_accounts(
            bank, company, customer)
        setup_mandate(company, customer, customer_account)
        journal = setup_journal(flavor, kind, company, company_account)

        payment, = Payment.create([{
                    'company': company,
                    'party': customer,
                    'journal': journal,
                    'kind': kind,
                    'amount': Decimal('1000.0'),
                    'state': 'approved',
                    'description': 'PAYMENT',
                    'date': Date.today(),
                    }])

        session_id, _, _ = ProcessPayment.create()
        process_payment = ProcessPayment(session_id)
        with Transaction().set_context(active_ids=[payment.id]):
            _, data = process_payment.do_process(None)
        group, = PaymentGroup.browse(data['res_id'])
        message, = group.sepa_messages
        assert message.type == 'out', message.type
        assert message.state == 'waiting', message.state
        sepa_string = message.message.encode('utf-8')
        sepa_xml = etree.fromstring(sepa_string)
        schema_file = os.path.join(os.path.dirname(__file__),
            '%s.xsd' % xsd)
        schema = etree.XMLSchema(etree.parse(schema_file))
        schema.assertValid(sepa_xml)


class AccountPaymentSepaTestCase(ModuleTestCase):
    'Test Account Payment SEPA module'
    module = 'account_payment_sepa'

    @with_transaction()
    def test_pain001_001_03(self):
        'Test pain001.001.03 xsd validation'
        validate_file('pain.001.001.03', 'payable')

    @with_transaction()
    def test_pain001_001_05(self):
        'Test pain001.001.05 xsd validation'
        validate_file('pain.001.001.05', 'payable')

    @with_transaction()
    def test_pain001_003_03(self):
        'Test pain001.003.03 xsd validation'
        validate_file('pain.001.003.03', 'payable')

    @with_transaction()
    def test_pain008_001_02(self):
        'Test pain008.001.02 xsd validation'
        validate_file('pain.008.001.02', 'receivable')

    @with_transaction()
    def test_pain008_001_04(self):
        'Test pain008.001.04 xsd validation'
        validate_file('pain.008.001.04', 'receivable')

    @with_transaction()
    def test_pain008_003_02(self):
        'Test pain008.003.02 xsd validation'
        validate_file('pain.008.003.02', 'receivable')

    @with_transaction()
    def test_sepa_mandate_sequence(self):
        'Test SEPA mandate sequence'
        pool = Pool()
        Configuration = pool.get('account.configuration')
        Sequence = pool.get('ir.sequence')
        Party = pool.get('party.party')
        Mandate = pool.get('account.payment.sepa.mandate')

        party = Party(name='Test')
        party.save()

        company = create_company()
        with set_company(company):
            mandate = Mandate(party=party)
            mandate.save()
            self.assertFalse(mandate.identification)

            sequence = Sequence(name='Test',
                code='account.payment.sepa.mandate')
            sequence.save()
            config = Configuration(1)
            config.sepa_mandate_sequence = sequence
            config.save()

            mandate = Mandate(party=party)
            mandate.save()
            self.assertTrue(mandate.identification)

    @with_transaction()
    def test_identification_unique(self):
        'Test unique identification constraint'
        pool = Pool()
        Party = pool.get('party.party')
        Mandate = pool.get('account.payment.sepa.mandate')

        same_id = '1'

        party = Party(name='Test')
        party.save()

        company = create_company()
        with set_company(company):
            mandate = Mandate(party=party, identification=same_id)
            mandate.save()

            for i in range(2):
                mandate = Mandate(party=party)
                mandate.save()

            mandate = Mandate(party=party, identification='')
            mandate.save()
            self.assertEqual(mandate.identification, None)

            Mandate.write([mandate], {
                    'identification': '',
                    })
            self.assertEqual(mandate.identification, None)

            self.assertRaises(UserError, Mandate.create, [{
                        'party': party.id,
                        'identification': same_id,
                        }])

    @with_transaction()
    def test_payment_sepa_bank_account_number(self):
        'Test Payment.sepa_bank_account_number'
        pool = Pool()
        Payment = pool.get('account.payment')
        Mandate = pool.get('account.payment.sepa.mandate')
        AccountNumber = pool.get('bank.account.number')
        Party = pool.get('party.party')
        BankAccount = pool.get('bank.account')

        company = create_company()
        with set_company(company):
            create_chart(company)
            account_number = AccountNumber()
            mandate = Mandate(account_number=account_number)
            payment = Payment(kind='receivable', sepa_mandate=mandate)

            self.assertEqual(id(payment.sepa_bank_account_number),
                id(account_number))

            other_account_number = AccountNumber(type='other')
            iban_account_number = AccountNumber(type='iban')
            bank_account = BankAccount(
                numbers=[other_account_number, iban_account_number])
            party = Party(
                bank_accounts=[bank_account])
            payment = Payment(kind='payable', party=party)

            self.assertEqual(id(payment.sepa_bank_account_number),
                id(iban_account_number))

    @with_transaction()
    def test_payment_sequence_type(self):
        'Test payment sequence type'
        pool = Pool()
        Date = pool.get('ir.date')
        Payment = pool.get('account.payment')
        ProcessPayment = pool.get('account.payment.process', type='wizard')

        environment = setup_environment()
        company = environment['company']
        bank = environment['bank']
        customer = environment['customer']
        with set_company(company):
            company_account, customer_account = setup_accounts(
                bank, company, customer)
            setup_mandate(company, customer, customer_account)
            journal = setup_journal('pain.008.001.02', 'receivable',
                company, company_account)

            payment, = Payment.create([{
                        'company': company,
                        'party': customer,
                        'journal': journal,
                        'kind': 'receivable',
                        'amount': Decimal('1000.0'),
                        'state': 'approved',
                        'description': 'PAYMENT',
                        'date': Date.today(),
                        }])

            session_id, _, _ = ProcessPayment.create()
            process_payment = ProcessPayment(session_id)
            with Transaction().set_context(active_ids=[payment.id]):
                _, data = process_payment.do_process(None)

            self.assertEqual(payment.sepa_mandate_sequence_type, 'FRST')

            payments = Payment.create([{
                        'company': company,
                        'party': customer,
                        'journal': journal,
                        'kind': 'receivable',
                        'amount': Decimal('2000.0'),
                        'state': 'approved',
                        'description': 'PAYMENT',
                        'date': Date.today(),
                        }, {
                        'company': company,
                        'party': customer,
                        'journal': journal,
                        'kind': 'receivable',
                        'amount': Decimal('3000.0'),
                        'state': 'approved',
                        'description': 'PAYMENT',
                        'date': Date.today(),
                        },
                    ])

            session_id, _, _ = ProcessPayment.create()
            process_payment = ProcessPayment(session_id)
            payment_ids = [p.id for p in payments]
            with Transaction().set_context(active_ids=payment_ids):
                _, data = process_payment.do_process(None)

            for payment in payments:
                self.assertEqual(payment.sepa_mandate_sequence_type, 'RCUR')

    @with_transaction()
    def handle_camt054(self, flavor):
        'Handle camt.054'
        pool = Pool()
        Message = pool.get('account.payment.sepa.message')

        message_file = os.path.join(os.path.dirname(__file__),
            '%s.xml' % flavor)
        message = open(message_file, 'rb').read()
        namespace = Message.get_namespace(message)
        self.assertEqual(namespace,
            'urn:iso:std:iso:20022:tech:xsd:%s' % flavor)

        payment = Mock()
        Payment = Mock()
        Payment.search.return_value = [payment]

        handler = CAMT054(BytesIO(message), Payment)

        self.assertEqual(handler.msg_id, 'AAAASESS-FP-00001')
        Payment.search.assert_called_with([
                ('sepa_end_to_end_id', '=', 'MUELL/FINP/RA12345'),
                ('kind', '=', 'payable'),
                ])
        Payment.succeed.assert_called_with([payment])

        payment.reset_mock()
        Payment.reset_mock()
        with patch.object(CAMT054, 'is_returned') as is_returned:
            is_returned.return_value = True
            handler = CAMT054(BytesIO(message), Payment)

            Payment.save.assert_called_with([payment])
            Payment.fail.assert_called_with([payment])

    def test_camt054_001_01(self):
        'Test camt.054.001.01 handling'
        self.handle_camt054('camt.054.001.01')

    def test_camt054_001_02(self):
        'Test camt.054.001.02 handling'
        self.handle_camt054('camt.054.001.02')

    def test_camt054_001_03(self):
        'Test camt.054.001.03 handling'
        self.handle_camt054('camt.054.001.03')

    def test_camt054_001_04(self):
        'Test camt.054.001.04 handling'
        self.handle_camt054('camt.054.001.04')

    @with_transaction()
    def test_sepa_mandate_report(self):
        'Test sepa mandate report'
        pool = Pool()
        Report = pool.get('account.payment.sepa.mandate', type='report')

        environment = setup_environment()
        company = environment['company']
        bank = environment['bank']
        customer = environment['customer']
        with set_company(company):
            company_account, customer_account = setup_accounts(
                bank, company, customer)
            mandate = setup_mandate(company, customer, customer_account)

            oext, content, _, _ = Report.execute([mandate.id], {})
            self.assertEqual(oext, 'odt')
            self.assertTrue(content)


def suite():
    suite = trytond.tests.test_tryton.suite()
    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
            AccountPaymentSepaTestCase))
    return suite
