Import IncludedNotes on invoice extraction

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java

@@ -352,6 +352,34 @@ public class ZUGFeRDInvoiceImporter {
 						}
 					}
 				}
+				List<IncludedNote> includedNotes = new ArrayList<>();
+				if ((item.getLocalName() != null) && (item.getLocalName().equals("IncludedNote"))) {
+					String subjectCode = "";
+					String content = null;
+					NodeList includedNodeChilds = item.getChildNodes();
+					for (int issueDateChildIndex = 0; issueDateChildIndex < includedNodeChilds.getLength(); issueDateChildIndex++) {
+						if ((includedNodeChilds.item(issueDateChildIndex).getLocalName() != null)
+							&& (includedNodeChilds.item(issueDateChildIndex).getLocalName().equals("Content"))) {
+							content = XMLTools.trimOrNull(includedNodeChilds.item(issueDateChildIndex));
+						}
+						if ((includedNodeChilds.item(issueDateChildIndex).getLocalName() != null)
+							&& (includedNodeChilds.item(issueDateChildIndex).getLocalName().equals("SubjectCode"))) {
+							subjectCode = XMLTools.trimOrNull(includedNodeChilds.item(issueDateChildIndex));
+						}
+					}
+					switch (subjectCode){
+						case "AAI": includedNotes.add(IncludedNote.generalNote(content)); break;
+						case "REG": includedNotes.add(IncludedNote.regulatoryNote(content)); break;
+						case "ABL": includedNotes.add(IncludedNote.legalNote(content)); break;
+						case "CUS": includedNotes.add(IncludedNote.customsNote(content)); break;
+						case "SUR": includedNotes.add(IncludedNote.sellerNote(content)); break;
+						case "TXD": includedNotes.add(IncludedNote.taxNote(content)); break;
+						case "ACY": includedNotes.add(IncludedNote.introductionNote(content)); break;
+						case "AAK": includedNotes.add(IncludedNote.discountBonusNote(content)); break;
+						default: includedNotes.add(IncludedNote.unspecifiedNote(content)); break;
+					}
+				}
+				zpp.addNotes(includedNotes);
 			}
 		}
 		String rootNode = extractString("local-name(/*)");

library/src/test/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporterTest.java

@@ -0,0 +1,36 @@
+package org.mustangproject.ZUGFeRD;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.InputStream;
+import java.text.ParseException;
+import java.util.List;
+import javax.xml.xpath.XPathExpressionException;
+import org.junit.jupiter.api.Test;
+import org.mustangproject.IncludedNote;
+import org.mustangproject.Invoice;
+import org.mustangproject.SubjectCode;
+
+class ZUGFeRDInvoiceImporterTest {
+
+  @Test
+  void testImportIncludedNotes() throws XPathExpressionException, ParseException {
+    InputStream inputStream = this.getClass()
+        .getResourceAsStream("/EN16931_Einfach.pdf");
+    ZUGFeRDInvoiceImporter importer = new ZUGFeRDInvoiceImporter(inputStream);
+    Invoice invoice = importer.extractInvoice();
+    List<IncludedNote> notesWithSubjectCode = invoice.getNotesWithSubjectCode();
+    assertThat(notesWithSubjectCode).hasSize(2);
+    assertThat(notesWithSubjectCode.get(0).getSubjectCode()).isNull();
+    assertThat(notesWithSubjectCode.get(0).getContent()).isEqualTo("Rechnung gemäß Bestellung vom 01.11.2024.");
+    assertThat(notesWithSubjectCode.get(1).getSubjectCode()).isEqualTo(SubjectCode.REG);
+    assertThat(notesWithSubjectCode.get(1).getContent()).isEqualTo("Lieferant GmbH\t\t\t\t\n"
+        + "Lieferantenstraße 20\t\t\t\t\n"
+        + "80333 München\t\t\t\t\n"
+        + "Deutschland\t\t\t\t\n"
+        + "Geschäftsführer: Hans Muster\n"
+        + "Handelsregisternummer: H A 123");
+
+  }
+
+}