Implemented creating Zugferd XML

e-invoicing-domain/src/main/kotlin/net/codinux/invoicing/creation/EInvoiceCreator.kt

@@ -1,8 +1,10 @@
 package net.codinux.invoicing.creation
 
 import net.codinux.invoicing.model.Invoice
+import org.mustangproject.ZUGFeRD.IXMLProvider
 import org.mustangproject.ZUGFeRD.Profiles
 import org.mustangproject.ZUGFeRD.ZUGFeRD2PullProvider
+import org.mustangproject.ZUGFeRD.ZUGFeRDExporterFromA3
 
 class EInvoiceCreator(
     private val mapper: MustangMapper = MustangMapper()
@@ -11,7 +13,25 @@ class EInvoiceCreator(
     fun createXRechnungXml(invoice: Invoice): String {
         val provider = ZUGFeRD2PullProvider()
         provider.profile = Profiles.getByName("XRechnung")
-        provider.generateXML(mapper.mapToTransaction(invoice))
+
+        return createXml(provider, invoice)
+    }
+
+    fun createZugferdXml(invoice: Invoice, zugferdVersion: Int = 2): String {
+        val exporter = ZUGFeRDExporterFromA3()
+            .setZUGFeRDVersion(zugferdVersion)
+            .setProfile("EN16931")
+            .setProducer("danki die geile Sau")
+            .setCreator(System.getProperty("user.name"))
+
+        return createXml(exporter.provider, invoice)
+    }
+
+
+    private fun createXml(provider: IXMLProvider, invoice: Invoice): String {
+        val transaction = mapper.mapToTransaction(invoice)
+
+        provider.generateXML(transaction)
 
         return String(provider.xml, Charsets.UTF_8)
     }

e-invoicing-domain/src/test/kotlin/net/codinux/invoicing/creation/EInvoiceCreatorTest.kt

@@ -23,6 +23,15 @@ class EInvoiceCreatorTest {
         assertThat(result).isNotEmpty()
     }
 
+    @Test
+    fun createZugferdXml() {
+        val invoice = createInvoice()
+
+        val result = underTest.createZugferdXml(invoice)
+
+        assertThat(result).isNotEmpty()
+    }
+
 
     private fun createInvoice(
         invoiceNumber: String = "12345",