facho/fe/form.py a modulo.

* facho/fe/form/query.py: utilidades.

FossilOrigin-Name: a1486421fcfcf6bda1e3b4901f3fc3fe86b7156852571aad74274d5b7ce3778a

facho/fe/__init__.py

@@ -1,4 +1,5 @@
 from .fe import FeXML
+from .fe import fe_from_string
 from .fe import NAMESPACES
 from .fe import DianXMLExtensionSigner
 from .fe import DianXMLExtensionSoftwareSecurityCode

facho/fe/fe.py

@@ -48,6 +48,10 @@ NAMESPACES = {
     'sig': 'http://www.w3.org/2000/09/xmldsig#',
 }
 
+def fe_from_string(document: str) -> FachoXML:
+    xml = LXMLBuilder.from_string(document)
+    return FachoXML(xml, nsmap=NAMESPACES)
+
 from contextlib import contextmanager
 @contextmanager
 def mock_xades_policy():

facho/fe/form/__init__.py

@@ -11,7 +11,7 @@ import decimal
 from decimal import Decimal
 import typing
 
-from .data.dian import codelist
+from ..data.dian import codelist
 
 DECIMAL_PRECISION = 6
 

facho/fe/form/query.py

@@ -0,0 +1,23 @@
+"""
+utilidades
+"""
+
+from .. import form
+from ..fe import fe_from_string
+from datetime import datetime
+
+def billing_reference(xmldocument: str, klass: form.BillingReference) -> form.BillingReference:
+    """
+    construye BillingReference desde XMLDOCUMENT
+    usando KLASS como clase.
+    """
+    if not issubclass(klass, form.BillingReference):
+        raise TypeError('klass expected subclass of BillingReference')
+    
+    fachoxml = fe_from_string(xmldocument)
+    
+    uid = fachoxml.get_element_text('./cbc:ID')
+    uuid = fachoxml.get_element_text('./cbc:UUID')
+    issue_date = fachoxml.get_element_text('./cbc:IssueDate')
+    date = datetime.strptime(issue_date, '%Y-%m-%d')
+    return klass(ident=uid, uuid=uuid, date=date)