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FOSS Java library to read, write and validate european electronic invoices and orders in the UN/CEFACT Cross Industry Invoice based formats Factur-X/ZUGFeRD, XRechnung and Order-X in your invoice PDFs.
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/**
 * *********************************************************************
 * 
 * Copyright 2018 Jochen Staerk
 * 

 * Use is subject to license terms.
 * 

 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0.
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * 

 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * **********************************************************************
 */
package org.mustangproject.ZUGFeRD;

import static org.mustangproject.ZUGFeRD.ZUGFeRDDateFormat.DATE;

import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.Optional;

import org.mustangproject.EStandard;
import org.mustangproject.FileAttachment;
import org.mustangproject.Invoice;
import org.mustangproject.XMLTools;

public class DAPullProvider extends ZUGFeRD2PullProvider {

	protected IExportableTransaction trans;
	protected Profile profile = Profiles.getByName(EStandard.despatchadvice,"pilot", 1);


	@Override
	public void generateXML(IExportableTransaction trans) {
		this.trans = trans;

		final String typecode = "220";
		/*if (trans.getDocumentCode() != null) {
			typecode = trans.getDocumentCode();
		}*/

		String testBooleanStr="true";
		String xml = "\n"
				// + "
				// xsi:schemaLocation=\"urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100
				// ../Schema/ZUGFeRD1p0.xsd\""
				+ ""
				// + "
				+" "+testBooleanStr+"\n"
				//
				+ ""
				+ "" + getProfile().getID() + ""
				+ ""
				+ ""
				+ ""
				+ "" + XMLTools.encodeXML(trans.getNumber()) + ""
				// + " RECHNUNG"
				// + "380"
				+ "" + typecode + ""
				+ ""
				+ DATE.udtFormat(trans.getIssueDate()) + "" // date
				+ buildNotes(trans)

				+ ""
				+ "";
		int lineID = 0;
		for (final IZUGFeRDExportableItem currentItem : trans.getZFItems()) {
			lineID++;
			if (currentItem.getProduct().getTaxExemptionReason() != null) {
				//	exemptionReason = "" + XMLTools.encodeXML(currentItem.getProduct().getTaxExemptionReason()) + "";
			}
      final LineCalculator lc = new LineCalculator(currentItem);
			xml += "" +
					""
					+ "" + lineID + ""
          + buildItemNotes(currentItem)
					+ ""

					+ "";
			// + " 4012345001235"
			if (currentItem.getProduct().getSellerAssignedID() != null) {
				xml += ""
						+ XMLTools.encodeXML(currentItem.getProduct().getSellerAssignedID()) + "";
			}
			if (currentItem.getProduct().getBuyerAssignedID() != null) {
				xml += ""
						+ XMLTools.encodeXML(currentItem.getProduct().getBuyerAssignedID()) + "";
			}
			String allowanceChargeStr = "";
			if (currentItem.getItemAllowances() != null && currentItem.getItemAllowances().length > 0) {
				for (final IZUGFeRDAllowanceCharge allowance : currentItem.getItemAllowances()) {
					allowanceChargeStr += getAllowanceChargeStr(allowance, currentItem);
				}
			}
			if (currentItem.getItemCharges() != null && currentItem.getItemCharges().length > 0) {
				for (final IZUGFeRDAllowanceCharge charge : currentItem.getItemCharges()) {
					allowanceChargeStr += getAllowanceChargeStr(charge, currentItem);

				}
			}


			xml += "" + XMLTools.encodeXML(currentItem.getProduct().getName()) + ""
					+ "" + XMLTools.encodeXML(currentItem.getProduct().getDescription())
					+ ""
					+ ""

					+ ""
					+ ""
					+ quantityFormat(currentItem.getQuantity()) + ""
					+ ""
					+ "";
			if ((currentItem.getDetailedDeliveryPeriodFrom() != null) || (currentItem.getDetailedDeliveryPeriodTo() != null)) {
				xml += "";
				if (currentItem.getDetailedDeliveryPeriodFrom() != null) {
					xml += "" + DATE.udtFormat(currentItem.getDetailedDeliveryPeriodFrom()) + "";
				}
				if (currentItem.getDetailedDeliveryPeriodTo() != null) {
					xml += "" + DATE.udtFormat(currentItem.getDetailedDeliveryPeriodTo()) + "";
				}
				xml += "";

			}

			xml += ""
					+ "" + currencyFormat(lc.getItemTotalNetAmount())
					+ "" // currencyID=\"EUR\"
					+ "";
		/*	if (currentItem.getAdditionalReferencedDocumentID() != null) {
				xml += "" + currentItem.getAdditionalReferencedDocumentID() + "130";

			}*/
			xml += ""
					+ "";

		}

		xml += "";
		if (trans.getReferenceNumber() != null) {
			xml += "" + XMLTools.encodeXML(trans.getReferenceNumber()) + "";

		}
		xml += ""
				+ getTradePartyAsXML(trans.getSender(), true, false)
				+ ""
				+ "";
		// + " GE2020211"
		// + " 4000001987658"

		xml += getTradePartyAsXML(trans.getRecipient(), false, false);
		xml += "";

		if (trans.getSellerOrderReferencedDocumentID() != null) {
			xml += ""
					+ ""
					+ XMLTools.encodeXML(trans.getSellerOrderReferencedDocumentID()) + ""
					+ "";
		}
		if (trans.getBuyerOrderReferencedDocumentID() != null) {
			xml += ""
					+ ""
					+ XMLTools.encodeXML(trans.getBuyerOrderReferencedDocumentID()) + ""
					+ "";
		}
		if (trans.getContractReferencedDocument() != null) {
			xml += ""
					+ ""
					+ XMLTools.encodeXML(trans.getContractReferencedDocument()) + ""
					+ "";
		}

		// Additional Documents of XRechnung (Rechnungsbegruendende Unterlagen - BG-24 XRechnung)
		if (trans.getAdditionalReferencedDocuments() != null) {
			for (final FileAttachment f : trans.getAdditionalReferencedDocuments()) {
				final String documentContent = new String(Base64.getEncoder().encodeToString(f.getData()));
				xml += ""
						+ "" + f.getFilename() + ""
						+ "916"
						+ "" + f.getDescription() + ""
						+ "" + documentContent + ""
						+ "";
			}
		}

		if (trans.getSpecifiedProcuringProjectID() != null) {
			xml += ""
					+ ""
					+ XMLTools.encodeXML(trans.getSpecifiedProcuringProjectID()) + "";
			if (trans.getSpecifiedProcuringProjectName() != null) {
				xml += "" + XMLTools.encodeXML(trans.getSpecifiedProcuringProjectName()) + "";
			}
			xml += "";
		}
		xml += ""
				+ "";
		if (this.trans.getDeliveryAddress() != null) {
			xml += "" +
					getTradePartyAsXML(this.trans.getDeliveryAddress(), false, true) +
					"";
		}
		xml += " \n" +
				"                \n" +
				"                    "+ DATE.udtFormat(trans.getDeliveryDate() )+"\n" +
				"                \n" +
				"            ";

/*
		xml += ""
				+ "";

		if (trans.getDeliveryDate() != null) {
			xml += DATE.udtFormat(trans.getDeliveryDate());
		} else {
			throw new IllegalStateException("No delivery date provided");
		}
		xml += "\n";
		xml += "\n"

 */
		/*
		 * + "\n" +
		 * "20130603\n" +
		 * "2013-51112\n" +
		 * "\n"
		 */
		xml+= "\n";
		// + " "
		// + " "
		// + " "
		// + " Wir erlauben uns Ihnen folgende Positionen aus der Lieferung Nr.
		// 2013-51112 in Rechnung zu stellen:\n"
		// + " \n"
		// + " \n"
		// + " \n";

		xml += ""
				+ "";

		final byte[] zugferdRaw;
		zugferdRaw = xml.getBytes(StandardCharsets.UTF_8);

		zugferdData = XMLTools.removeBOM(zugferdRaw);
	}


	@Override
	public void setProfile(Profile p) {
		profile = p;
	}

	@Override
	public Profile getProfile() {
		return profile;
	}

  @Override
  protected String buildNotes(IExportableTransaction exportableTransaction) {
    Invoice copyWithoutRebateInfo = new Invoice()
        .setOwnOrganisationFullPlaintextInfo(exportableTransaction.getOwnOrganisationFullPlaintextInfo())
        .addNotes(exportableTransaction.getNotesWithSubjectCode());
    if(exportableTransaction.getNotes() != null) {
      for (String note : exportableTransaction.getNotes()) {
        copyWithoutRebateInfo.addNote(note);
      }
    }
    Optional.ofNullable(exportableTransaction.getSubjectNote()).ifPresent(copyWithoutRebateInfo::addNote);
    return super.buildNotes(copyWithoutRebateInfo);
  }
}