/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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
    *
    *      https://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.
   */
  
  /*
   * This is not the original file distributed by the Apache Software Foundation
   * It has been modified by the Hipparchus project
   */
  package org.hipparchus.exception;
  
  
  import java.lang.reflect.InvocationTargetException;
  import java.text.MessageFormat;
  import java.util.Enumeration;
  import java.util.Locale;
  import java.util.ResourceBundle;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  public abstract class LocalizedFormatsAbstractTest {
  
      protected abstract Class<? extends Enum<?>> getFormatsClass();
      protected abstract int getExpectedNumber();
  
      private Localizable[] getValues() {
          Localizable[] localizable = null;
          try {
              Object[] a = (Object[]) getFormatsClass().getMethod("values").invoke(null);
              localizable = new Localizable[a.length];
              for (int i = 0; i < a.length; ++i) {
                  localizable[i] = (Localizable) a[i];
              }
          } catch (NoSuchMethodException | SecurityException | IllegalAccessException |
                          IllegalArgumentException | InvocationTargetException e) {
              Assert.fail(e.getLocalizedMessage());
          }
          return localizable;
      }
  
      private Localizable valueOf(String s) {
          Localizable localizable = null;
          try {
              localizable = (Localizable) getFormatsClass().getMethod("valueOf", String.class).invoke(null, s);
          } catch (IllegalArgumentException iae) {
              localizable = null;
          } catch (NoSuchMethodException | SecurityException | IllegalAccessException | InvocationTargetException e) {
              Assert.fail(s + " <-> " + e.getLocalizedMessage());
          }
          return localizable;
      }
  
      @Test
      public void testMessageNumber() {
          Assert.assertEquals(getExpectedNumber(), getValues().length);
      }
  
      @Test
      public void testAllKeysPresentInPropertiesFiles() {
          Class<? extends Enum<?>> c = getFormatsClass();
          final String path = c.getName().replaceAll("\\.", "/");
          for (final String language : new String[] { "fr" } ) {
              ResourceBundle bundle =
                  ResourceBundle.getBundle("assets/" + path, new Locale(language), c.getClassLoader());
              for (Localizable message : getValues()) {
                  final String messageKey = message.toString();
                  boolean keyPresent = false;
                  for (final Enumeration<String> keys = bundle.getKeys(); keys.hasMoreElements();) {
                      keyPresent |= messageKey.equals(keys.nextElement());
                  }
                  Assert.assertTrue("missing key \"" + message.toString() + "\" for language " + language,
                                    keyPresent);
              }
              Assert.assertEquals(language, bundle.getLocale().getLanguage());
          }
  
      }
  
      @Test
      public void testAllPropertiesCorrespondToKeys() {
          Class<? extends Enum<?>> c = getFormatsClass();
          final String path = c.getName().replaceAll("\\.", "/");
          for (final String language : new String[] { "fr" } ) {
              ResourceBundle bundle =
                  ResourceBundle.getBundle("assets/" + path, new Locale(language), c.getClassLoader());
              for (final Enumeration<String> keys = bundle.getKeys(); keys.hasMoreElements();) {
                 final String propertyKey = keys.nextElement();
                 try {
                     Assert.assertNotNull(valueOf(propertyKey));
                 } catch (IllegalArgumentException iae) {
                     Assert.fail("unknown key \"" + propertyKey + "\" in language " + language);
                 }
             }
             Assert.assertEquals(language, bundle.getLocale().getLanguage());
         }
 
     }
 
     @Test
     public void testNoMissingFrenchTranslation() {
         for (Localizable message : getValues()) {
             String translated = message.getLocalizedString(Locale.FRENCH);
             Assert.assertFalse(message.toString(), translated.toLowerCase().contains("missing translation"));
         }
     }
 
     @Test
     public void testNoOpEnglishTranslation() {
         for (Localizable message : getValues()) {
             String translated = message.getLocalizedString(Locale.ENGLISH);
             Assert.assertEquals(message.getSourceString(), translated);
         }
     }
 
     @Test
     public void testVariablePartsConsistency() {
         for (final String language : new String[] { "fr" } ) {
             Locale locale = new Locale(language);
             for (Localizable message : getValues()) {
                 MessageFormat source     = new MessageFormat(message.getSourceString());
                 MessageFormat translated = new MessageFormat(message.getLocalizedString(locale));
                 Assert.assertEquals(message.toString() + " (" + language + ")",
                                     source.getFormatsByArgumentIndex().length,
                                     translated.getFormatsByArgumentIndex().length);
             }
         }
     }
 
 }