com.emv.qrcode.model.mpm.Unreserved Maven / Gradle / Ivy

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package com.emv.qrcode.model.mpm;

import com.emv.qrcode.core.model.mpm.TagLengthString;
import com.emv.qrcode.model.mpm.constants.UnreservedTemplateFieldCodes;
import lombok.Getter;
import org.apache.commons.lang3.StringUtils;

import java.io.Serializable;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;

@Getter
public class Unreserved implements Serializable {

  private static final long serialVersionUID = -3465559955367881407L;

  // Globally Unique Identifier
  private TagLengthString globallyUniqueIdentifier;

  // Context Specific Data
  private final Map contextSpecificData = new LinkedHashMap<>();

  public Unreserved() {
    super();
  }

  public Unreserved(final String globallyUniqueIdentifier) {
    this.setGloballyUniqueIdentifier(globallyUniqueIdentifier);
  }

  public final void setGloballyUniqueIdentifier(final String globallyUniqueIdentifier) {
    this.globallyUniqueIdentifier = new TagLengthString(UnreservedTemplateFieldCodes.ID_GLOBALLY_UNIQUE_IDENTIFIER, globallyUniqueIdentifier);
  }

  public final void addContextSpecificData(final TagLengthString tagLengthString) {
    contextSpecificData.put(tagLengthString.getTag(), tagLengthString);
  }

  public final void addContextSpecificData(final String tag, final String value) {
    contextSpecificData.put(tag, new TagLengthString(tag, value));
  }

  @Override
  public String toString() {

    final StringBuilder sb = new StringBuilder();

    Optional.ofNullable(globallyUniqueIdentifier).ifPresent(tlv -> sb.append(tlv.toString()));

    for (final Entry entry : contextSpecificData.entrySet()) {
      Optional.ofNullable(entry.getValue()).ifPresent(tlv -> sb.append(tlv.toString()));
    }

    final String string = sb.toString();

    if (StringUtils.isBlank(string)) {
      return StringUtils.EMPTY;
    }

    return string;
  }

}