# -*- coding: utf-8 -*-
# © 2016 Danimar Ribeiro, Trustcode
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

import os
import suds
from OpenSSL import crypto
from base64 import b64encode
from pytrustnfe.xml import render_xml, sanitize_response
from pytrustnfe.client import get_authenticated_client
from pytrustnfe.certificado import extract_cert_and_key_from_pfx, save_cert_key
from pytrustnfe.nfse.assinatura import Assinatura


def sign_tag(certificado, **kwargs):
    pkcs12 = crypto.load_pkcs12(certificado.pfx, certificado.password)
    key = pkcs12.get_privatekey()
    if 'nfse' in kwargs:
        for item in kwargs['nfse']['lista_rps']:
            signed = crypto.sign(key, item['assinatura'], 'SHA1')
            item['assinatura'] = b64encode(signed)
    if 'cancelamento' in kwargs:
        signed = crypto.sign(key, kwargs['cancelamento']['assinatura'], 'SHA1')
        kwargs['cancelamento']['assinatura'] = b64encode(signed)


def _send(certificado, method, **kwargs):
    path = os.path.join(os.path.dirname(__file__), 'templates')
    if method in ('GerarNfse', 'RecepcionarLoteRps',
                  'RecepcionarLoteRpsSincrono',
                  'CancelarNfse', 'SubstituirNfse'):
        sign_tag(certificado, **kwargs)

    if kwargs['ambiente'] == 'producao':
        url = \
            'http://e-gov.betha.com.br/e-nota-contribuinte-test-ws/nfseWS?wsdl'
    else:
        url = 'http://e-gov.betha.com.br/e-nota-contribuinte-ws/nfseWS?wsdl'

    xml_send = render_xml(path, '%s.xml' % method, False, **kwargs)

    cert, key = extract_cert_and_key_from_pfx(
        certificado.pfx, certificado.password)
    cert, key = save_cert_key(cert, key)
    client = get_authenticated_client(url, cert, key)

    pfx_path = certificado.save_pfx()
    signer = Assinatura(pfx_path, certificado.password)
    xml_send = signer.assina_xml(xml_send, '')

    try:
        response = getattr(client.service, method)(1, xml_send)
    except suds.WebFault as e:
        return {
            'sent_xml': xml_send,
            'received_xml': e.fault.faultstring,
            'object': None
        }

    response, obj = sanitize_response(response)
    return {
        'sent_xml': xml_send,
        'received_xml': response,
        'object': obj
    }


def gerar_nfse(certificado, **kwargs):
    return _send(certificado, 'GerarNfse', **kwargs)


def envio_lote_rps_assincrono(certificado, **kwargs):
    return _send(certificado, 'RecepcionarLoteRps', **kwargs)


def envio_lote_rps(certificado, **kwargs):
    return _send(certificado, 'RecepcionarLoteRpsSincrono', **kwargs)


def cancelar_nfse(certificado, **kwargs):
    return _send(certificado, 'CancelarNfse', **kwargs)


def substituir_nfse(certificado, **kwargs):
    return _send(certificado, 'SubstituirNfse', **kwargs)


def consulta_situacao_lote_rps(certificado, **kwargs):
    return _send(certificado, 'ConsultaSituacaoLoteRPS', **kwargs)


def consulta_nfse_por_rps(certificado, **kwargs):
    return _send(certificado, 'ConsultaNfsePorRps', **kwargs)


def consultar_lote_rps(certificado, **kwargs):
    return _send(certificado, 'ConsultarLoteRps', **kwargs)


def consulta_nfse_servico_prestado(certificado, **kwargs):
    return _send(certificado, 'ConsultarNfseServicoPrestado', **kwargs)


def consultar_nfse_servico_tomado(certificado, **kwargs):
    return _send(certificado, 'ConsultarNfseServicoTomado', **kwargs)


def consulta_nfse_faixe(certificado, **kwargs):
    return _send(certificado, 'ConsultarNfseFaixa', **kwargs)


def consulta_cnpj(certificado, **kwargs):
    return _send(certificado, 'ConsultaCNPJ', **kwargs)