/*
    * 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
    *
    *      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.apache.logging.log4j.message;
  
  import java.io.IOException;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutputStream;
  import java.util.Locale;
  import java.util.MissingResourceException;
  import java.util.ResourceBundle;
  
  import org.apache.logging.log4j.status.StatusLogger;
  
  /**
   * Provides some level of compatibility with Log4j 1.x and convenience but is not the recommended way to Localize
   * messages.
   * <p>
   * The recommended way to localize messages is to log a message id. Log events should then be recorded without
   * formatting into a data store. The application that is used to read the events and display them to the user can then
   * localize and format the messages for the end user.
   * </p>
   */
  public class LocalizedMessage implements Message, LoggerNameAwareMessage {
      private static final long serialVersionUID = 3893703791567290742L;
  
      private String baseName;
  
      // ResourceBundle is not Serializable.
      private transient ResourceBundle resourceBundle;
  
      private final Locale locale;
  
      private transient StatusLogger logger = StatusLogger.getLogger();
  
      private String loggerName;
      private String key;
      private String[] stringArgs;
      private transient Object[] argArray;
      private String formattedMessage;
      private transient Throwable throwable;
  
      /**
       * Constructor with message pattern and arguments.
       *
       * @param messagePattern the message pattern that to be checked for placeholders.
       * @param arguments the argument array to be converted.
       */
      public LocalizedMessage(final String messagePattern, final Object[] arguments) {
          this((ResourceBundle) null, (Locale) null, messagePattern, arguments);
      }
  
      public LocalizedMessage(final String baseName, final String key, final Object[] arguments) {
          this(baseName, (Locale) null, key, arguments);
      }
  
      public LocalizedMessage(final ResourceBundle bundle, final String key, final Object[] arguments) {
          this(bundle, (Locale) null, key, arguments);
      }
  
      public LocalizedMessage(final String baseName, final Locale locale, final String key, final Object[] arguments) {
          this.key = key;
          this.argArray = arguments;
          this.throwable = null;
          this.baseName = baseName;
          this.resourceBundle = null;
          this.locale = locale;
      }
  
      public LocalizedMessage(final ResourceBundle bundle, final Locale locale, final String key,
              final Object[] arguments) {
          this.key = key;
          this.argArray = arguments;
          this.throwable = null;
          this.baseName = null;
          this.resourceBundle = bundle;
          this.locale = locale;
      }
  
      public LocalizedMessage(final Locale locale, final String key, final Object[] arguments) {
          this((ResourceBundle) null, locale, key, arguments);
      }
  
      public LocalizedMessage(final String messagePattern, final Object arg) {
          this((ResourceBundle) null, (Locale) null, messagePattern, new Object[] {arg});
      }
 
     public LocalizedMessage(final String baseName, final String key, final Object arg) {
         this(baseName, (Locale) null, key, new Object[] {arg});
     }
 
     public LocalizedMessage(final ResourceBundle bundle, final String key, final Object arg) {
         this(bundle, (Locale) null, key, new Object[] {arg});
     }
 
     public LocalizedMessage(final String baseName, final Locale locale, final String key, final Object arg) {
         this(baseName, locale, key, new Object[] {arg});
     }
 
     public LocalizedMessage(final ResourceBundle bundle, final Locale locale, final String key, final Object arg) {
         this(bundle, locale, key, new Object[] {arg});
     }
 
     public LocalizedMessage(final Locale locale, final String key, final Object arg) {
         this((ResourceBundle) null, locale, key, new Object[] {arg});
     }
 
     public LocalizedMessage(final String messagePattern, final Object arg1, final Object arg2) {
         this((ResourceBundle) null, (Locale) null, messagePattern, new Object[] {arg1, arg2});
     }
 
     public LocalizedMessage(final String baseName, final String key, final Object arg1, final Object arg2) {
         this(baseName, (Locale) null, key, new Object[] {arg1, arg2});
     }
 
     public LocalizedMessage(final ResourceBundle bundle, final String key, final Object arg1, final Object arg2) {
         this(bundle, (Locale) null, key, new Object[] {arg1, arg2});
     }
 
     public LocalizedMessage(final String baseName, final Locale locale, final String key, final Object arg1,
             final Object arg2) {
         this(baseName, locale, key, new Object[] {arg1, arg2});
     }
 
     public LocalizedMessage(final ResourceBundle bundle, final Locale locale, final String key, final Object arg1,
             final Object arg2) {
         this(bundle, locale, key, new Object[] {arg1, arg2});
     }
 
     public LocalizedMessage(final Locale locale, final String key, final Object arg1, final Object arg2) {
         this((ResourceBundle) null, locale, key, new Object[] {arg1, arg2});
     }
 
     /**
      * Set the name of the Logger.
      * 
      * @param name The name of the Logger.
      */
     @Override
     public void setLoggerName(final String name) {
         this.loggerName = name;
     }
 
     /**
      * Returns the name of the Logger.
      * 
      * @return the name of the Logger.
      */
     @Override
     public String getLoggerName() {
         return this.loggerName;
     }
 
     /**
      * Returns the formatted message after looking up the format in the resource bundle.
      * 
      * @return The formatted message String.
      */
     @Override
     public String getFormattedMessage() {
         if (formattedMessage != null) {
             return formattedMessage;
         }
         ResourceBundle bundle = this.resourceBundle;
         if (bundle == null) {
             if (baseName != null) {
                 bundle = getResourceBundle(baseName, locale, false);
             } else {
                 bundle = getResourceBundle(loggerName, locale, true);
             }
         }
         final String myKey = getFormat();
         final String msgPattern = (bundle == null || !bundle.containsKey(myKey)) ? myKey : bundle.getString(myKey);
         final Object[] array = argArray == null ? stringArgs : argArray;
         final FormattedMessage msg = new FormattedMessage(msgPattern, array);
         formattedMessage = msg.getFormattedMessage();
         throwable = msg.getThrowable();
         return formattedMessage;
     }
 
     @Override
     public String getFormat() {
         return key;
     }
 
     @Override
     public Object[] getParameters() {
         if (argArray != null) {
             return argArray;
         }
         return stringArgs;
     }
 
     @Override
     public Throwable getThrowable() {
         return throwable;
     }
 
     /**
      * Override this to use a ResourceBundle.Control in Java 6
      * 
      * @param rbBaseName The base name of the resource bundle, a fully qualified class name.
      * @param resourceBundleLocale The locale to use when formatting the message.
      * @param loop If true the key will be treated as a package or class name and a resource bundle will be located
      *            based on all or part of the package name. If false the key is expected to be the exact bundle id.
      * @return The ResourceBundle.
      */
     protected ResourceBundle getResourceBundle(final String rbBaseName, final Locale resourceBundleLocale,
             final boolean loop) {
         ResourceBundle rb = null;
 
         if (rbBaseName == null) {
             return null;
         }
         try {
             if (resourceBundleLocale != null) {
                 rb = ResourceBundle.getBundle(rbBaseName, resourceBundleLocale);
             } else {
                 rb = ResourceBundle.getBundle(rbBaseName);
             }
         } catch (final MissingResourceException ex) {
             if (!loop) {
                 logger.debug("Unable to locate ResourceBundle " + rbBaseName);
                 return null;
             }
         }
 
         String substr = rbBaseName;
         int i;
         while (rb == null && (i = substr.lastIndexOf('.')) > 0) {
             substr = substr.substring(0, i);
             try {
                 if (resourceBundleLocale != null) {
                     rb = ResourceBundle.getBundle(substr, resourceBundleLocale);
                 } else {
                     rb = ResourceBundle.getBundle(substr);
                 }
             } catch (final MissingResourceException ex) {
                 logger.debug("Unable to locate ResourceBundle " + substr);
             }
         }
         return rb;
     }
 
     @Override
     public String toString() {
         return getFormattedMessage();
     }
 
     private void writeObject(final ObjectOutputStream out) throws IOException {
         out.defaultWriteObject();
         getFormattedMessage();
         out.writeUTF(formattedMessage);
         out.writeUTF(key);
         out.writeUTF(baseName);
         out.writeInt(argArray.length);
         stringArgs = new String[argArray.length];
         int i = 0;
         for (final Object obj : argArray) {
             stringArgs[i] = obj.toString();
             ++i;
         }
         out.writeObject(stringArgs);
     }
 
     private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException {
         in.defaultReadObject();
         formattedMessage = in.readUTF();
         key = in.readUTF();
         baseName = in.readUTF();
         final int length = in.readInt();
         stringArgs = (String[]) in.readObject();
         logger = StatusLogger.getLogger();
         resourceBundle = null;
         argArray = null;
     }
 }