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57 lines
2.2 KiB
57 lines
2.2 KiB
# -*- coding: utf-8 -*-
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import base64
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import hashlib
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from pynfe.utils.flags import VERSAO_QRCODE
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from pynfe.utils.webservices import NFCE
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class Danfe(object):
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""" Classe abstrata para a geração do Danfe. """
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pass
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class DanfeNfce(Danfe):
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""" Classe para geração de Danfe para Nota Fiscal de Consumidor Eletrônica (NFC-e). """
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def gerar_qrcode(self, token, csc, xml, uf, homologacao=False):
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""" Classe para gerar url do qrcode da NFC-e """
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try:
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# Procura atributos no xml
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ns = {'ns':'http://www.portalfiscal.inf.br/nfe'}
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sig = {'sig':'http://www.w3.org/2000/09/xmldsig#'}
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# Tag Raiz NFe Ex: <NFe>
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nfe = xml[0]
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chave = nfe[0].attrib['Id'].replace('NFe','')
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data = nfe.xpath('ns:infNFe/ns:ide/ns:dhEmi/text()', namespaces=ns)[0].encode()
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tpamb = nfe.xpath('ns:infNFe/ns:ide/ns:tpAmb/text()', namespaces=ns)[0]
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try:
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cpf = nfe.xpath('ns:infNFe/ns:dest/ns:CPF/text()', namespaces=ns)[0]
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except IndexError:
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cpf = None
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total = nfe.xpath('ns:infNFe/ns:total/ns:ICMSTot/ns:vNF/text()', namespaces=ns)[0]
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icms = nfe.xpath('ns:infNFe/ns:total/ns:ICMSTot/ns:vICMS/text()', namespaces=ns)[0]
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digest = nfe.xpath('sig:Signature/sig:SignedInfo/sig:Reference/sig:DigestValue/text()', namespaces=sig)[0].encode()
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data = base64.b16encode(data).decode()
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digest = base64.b16encode(digest).decode()
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if cpf is None:
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url = 'chNFe={}&nVersao={}&tpAmb={}&dhEmi={}&vNF={}&vICMS={}&digVal={}&cIdToken={}'.format(
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chave, VERSAO_QRCODE, tpamb, data.lower(), total, icms, digest.lower(), token)
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else:
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url = 'chNFe={}&nVersao={}&tpAmb={}&cDest={}&dhEmi={}&vNF={}&vICMS={}&digVal={}&cIdToken={}'.format(
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chave, VERSAO_QRCODE, tpamb, cpf, data.lower(), total, icms, digest.lower(), token)
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url_hash = hashlib.sha1(url.encode()+csc.encode()).digest()
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url_hash = base64.b16encode(url_hash).decode()
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url = url + '&cHashQRCode=' + url_hash.upper()
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if uf.upper() == 'PR':
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return NFCE[uf.upper()]['QR'] + url
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else:
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if homologacao:
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return NFCE[uf.upper()]['HOMOLOGACAO'] + NFCE[uf.upper()]['QR'] + url
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else:
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return NFCE[uf.upper()]['HTTPS'] + NFCE[uf.upper()]['QR'] + url
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except Exception as e:
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raise e
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