Se adiciona xml de AllowanceCharge para documento

FossilOrigin-Name: 93cd9530bb2f63a2803b8a32a5aceeeda015eff2d26c96e95a13dbb9193cad82

facho/fe/form/__init__.py

@@ -396,6 +396,43 @@ class InvoiceDocumentReference(BillingReference):
     date: fecha de emision de la nota credito relacionada
     """
 
+@dataclass
+class AllowanceChargeReason:
+    code: str
+    reason: str
+
+    def __post_init__(self):
+        if self.code not in codelist.CodigoDescuento:
+            raise ValueError("code [%s] not found" % (self.code))
+
+
+@dataclass
+class AllowanceCharge:
+    #DIAN 1.7.-2020: FAQ03
+    charge_indicator: bool = True
+    amount: Amount = Amount(0.0)
+    reason: AllowanceChargeReason = None
+
+    def isCharge(self):
+        return self.charge_indicator == True
+
+    def isDiscount(self):
+        return self.charge_indicator == False
+
+    def asCharge(self):
+        self.charge_indicator = True
+
+    def asDiscount(self):
+        self.charge_indicator = False
+
+    def hasReason(self):
+        return self.reason is not None
+
+class AllowanceChargeAsDiscount(AllowanceCharge):
+    def __init__(self, amount: Amount = Amount(0.0)):
+        self.charge_indicator = False
+        self.amount = amount
+
 @dataclass
 class InvoiceLine:
     # RESOLUCION 0004: pagina 155
@@ -409,6 +446,13 @@ class InvoiceLine:
     # de subtotal
     tax: typing.Optional[TaxTotal]
 
+    allowance_charge = []
+
+    def add_allowance_charge(charge):
+        if not isinstance(charge, AllowanceCharge):
+            raise TypeError('charge invalid type expected AllowanceCharge')
+        self.allowance_charge.add(charge)
+
     @property
     def total_amount(self):
         return self.quantity * self.price.amount
@@ -459,42 +503,6 @@ class LegalMonetaryTotal:
             - self.prepaid_amount
 
 
-@dataclass
-class AllowanceChargeReason:
-    code: str
-    reason: str
-
-    def __post_init__(self):
-        if self.code not in codelist.CodigoDescuento:
-            raise ValueError("code [%s] not found" % (self.code))
-
-
-@dataclass
-class AllowanceCharge:
-    #DIAN 1.7.-2020: FAQ03
-    charge_indicator: bool = True
-    amount: Amount = Amount(0.0)
-    reason: AllowanceChargeReason = None
-
-    def isCharge(self):
-        return self.charge_indicator == True
-
-    def isDiscount(self):
-        return self.charge_indicator == False
-
-    def asCharge(self):
-        self.charge_indicator = True
-
-    def asDiscount(self):
-        self.charge_indicator = False
-
-    def hasReason(self):
-        return self.reason is not None
-
-class AllowanceChargeAsDiscount(AllowanceCharge):
-    def __init__(self, amount: Amount = Amount(0.0)):
-        self.charge_indicator = False
-        self.amount = amount
 
 class NationalSalesInvoiceDocumentType(str):
     def __str__(self):
@@ -593,7 +601,7 @@ class Invoice:
 
         self.invoice_operation_type = operation
 
-    def add_allownace_charge(self, charge: AllowanceCharge):
+    def add_allowance_charge(self, charge: AllowanceCharge):
         self.invoice_allowance_charge.append(charge)
 
     def add_invoice_line(self, line: InvoiceLine):

facho/fe/form_xml/invoice.py

@@ -543,7 +543,23 @@ class DIANInvoiceXML(fe.FeXML):
                              invoice_line.price.quantity,
                              unitCode=invoice_line.quantity.code)
 
+    def set_allowance_charge(fexml, invoice):
+        for idx, charge in enumerate(invoice.invoice_allowance_charge):
+            next_append = idx > 0
+            fexml.append_allowance_charge(fexml, idx + 1, charge, append=next_append)
 
+    def append_allowance_charge(fexml, parent, idx, charge, append=False):
+            line = fexml.fragment('./cac:AllowanceCharge', append=append)
+            #DIAN 1.7.-2020: FAQ02
+            line.set_element('./cbc:ID', idx)
+            #DIAN 1.7.-2020: FAQ03
+            line.set_element('./cbc:ChargeIndicator', str(charge.charge_indicator).lower())
+            if charge.reason:
+                line.set_element('./cbc:AllowanceChargeReasonCode', charge.reason.code)
+                line.set_element('./cbc:allowanceChargeReason', charge.reason.reason)
+            fexml.set_element_amount_for(line, './cbc:Amount', charge.amount)
+
+            
     def attach_invoice(fexml, invoice):
         """adiciona etiquetas a FEXML y retorna FEXML
         en caso de fallar validacion retorna None"""
@@ -579,6 +595,7 @@ class DIANInvoiceXML(fe.FeXML):
         fexml.set_invoice_totals(invoice)
         fexml.set_invoice_lines(invoice)
         fexml.set_payment_mean(invoice)
+        fexml.set_allowance_charge(invoice)
         fexml.set_billing_reference(invoice)
 
         return fexml