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Library with support for certain re-ocurring standard business objects
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/**
 * Copyright (C) 2014-2016 Philip Helger (www.helger.com)
 * philip[at]helger[dot]com
 *
 * 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.helger.masterdata.swift;

import java.io.Serializable;
import java.util.List;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;

import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.ReturnsMutableCopy;
import com.helger.commons.collection.ext.CommonsArrayList;
import com.helger.commons.collection.ext.ICommonsList;
import com.helger.commons.hashcode.HashCodeGenerator;
import com.helger.commons.string.StringHelper;
import com.helger.commons.string.ToStringGenerator;

/**
 * This class represents a single IBAN number (SEPA). An IBAN number is a
 * combination of different values that are country dependent.
 *
 * @author Philip Helger
 */
@Immutable
public class IBAN implements Serializable
{
  private final ICommonsList  m_aValues;

  public IBAN (@Nonnull final List  aValues)
  {
    ValueEnforcer.notNull (aValues, "Values");
    m_aValues = new CommonsArrayList <> (aValues);
  }

  @Nonnull
  @ReturnsMutableCopy
  public ICommonsList  getAllValues ()
  {
    return m_aValues.getClone ();
  }

  @Override
  public boolean equals (final Object o)
  {
    if (o == this)
      return true;
    if (o == null || !getClass ().equals (o.getClass ()))
      return false;
    final IBAN rhs = (IBAN) o;
    return m_aValues.equals (rhs.m_aValues);
  }

  @Override
  public int hashCode ()
  {
    return new HashCodeGenerator (this).append (m_aValues).getHashCode ();
  }

  @Override
  public String toString ()
  {
    return new ToStringGenerator (this).append ("values", m_aValues).toString ();
  }

  @Nonnull
  public static String extractCountryCode (@Nonnull final String sIBAN)
  {
    return sIBAN.substring (0, 2);
  }

  @Nullable
  public static IBAN createFromString (@Nullable final String sIBAN)
  {
    final String sRealIBAN = IBANManager.unifyIBAN (sIBAN);
    if (StringHelper.hasNoText (sRealIBAN))
      return null;

    // get country specific data
    final String sCountryCode = extractCountryCode (sRealIBAN);
    final IBANCountryData aCountryData = IBANManager.getCountryData (sCountryCode);
    if (aCountryData == null)
      throw new IllegalArgumentException ("Passed IBAN country '" + sCountryCode + "' is not supported!");

    // parse IBAN to country specific list of elements
    return new IBAN (aCountryData.parseToElementValues (sRealIBAN));
  }
}