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/*
 * Copyright 2008 ZXing authors
 *
 * 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 com.google.zxing.client.result;

import com.google.zxing.Result;

import java.util.ArrayList;
import java.util.List;

/**
 * Implements the "BIZCARD" address book entry format, though this has been
 * largely reverse-engineered from examples observed in the wild -- still
 * looking for a definitive reference.
 *
 * @author Sean Owen
 */
public final class BizcardResultParser extends AbstractDoCoMoResultParser {

  // Yes, we extend AbstractDoCoMoResultParser since the format is very much
  // like the DoCoMo MECARD format, but this is not technically one of
  // DoCoMo's proposed formats

  @Override
  public AddressBookParsedResult parse(Result result) {
    String rawText = getMassagedText(result);
    if (!rawText.startsWith("BIZCARD:")) {
      return null;
    }
    String firstName = matchSingleDoCoMoPrefixedField("N:", rawText, true);
    String lastName = matchSingleDoCoMoPrefixedField("X:", rawText, true);
    String fullName = buildName(firstName, lastName);
    String title = matchSingleDoCoMoPrefixedField("T:", rawText, true);
    String org = matchSingleDoCoMoPrefixedField("C:", rawText, true);
    String[] addresses = matchDoCoMoPrefixedField("A:", rawText);
    String phoneNumber1 = matchSingleDoCoMoPrefixedField("B:", rawText, true);
    String phoneNumber2 = matchSingleDoCoMoPrefixedField("M:", rawText, true);
    String phoneNumber3 = matchSingleDoCoMoPrefixedField("F:", rawText, true);
    String email = matchSingleDoCoMoPrefixedField("E:", rawText, true);

    return new AddressBookParsedResult(maybeWrap(fullName),
                                       null,
                                       null,
                                       buildPhoneNumbers(phoneNumber1, phoneNumber2, phoneNumber3),
                                       null,
                                       maybeWrap(email),
                                       null,
                                       null,
                                       null,
                                       addresses,
                                       null,
                                       org,
                                       null,
                                       title,
                                       null,
                                       null);
  }

  private static String[] buildPhoneNumbers(String number1,
                                            String number2,
                                            String number3) {
    List numbers = new ArrayList<>(3);
    if (number1 != null) {
      numbers.add(number1);
    }
    if (number2 != null) {
      numbers.add(number2);
    }
    if (number3 != null) {
      numbers.add(number3);
    }
    int size = numbers.size();
    if (size == 0) {
      return null;
    }
    return numbers.toArray(new String[size]);
  }

  private static String buildName(String firstName, String lastName) {
    if (firstName == null) {
      return lastName;
    } else {
      return lastName == null ? firstName : firstName + ' ' + lastName;
    }
  }

}