/*
    * Copyright (c) 2001-2017, Zoltan Farkas All Rights Reserved.
    *
    * This library is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 2.1 of the License, or (at your option) any later version.
    *
    * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
   *
   * Additionally licensed with:
   *
   * 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 org.spf4j.log;
  
  import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  import javax.annotation.Nullable;
  import org.slf4j.Logger;
  import org.slf4j.Marker;
  import org.spf4j.base.Arrays;
  
  /**
   *
   * @author Zoltan Farkas
   */
  public final class LogUtils {
  
    private LogUtils() {
    }
  
    @SuppressFBWarnings({"SA_LOCAL_SELF_COMPARISON", "SF_SWITCH_FALLTHROUGH"})
    public static void logUpgrade(final Logger log, @Nullable final Marker marker, final Level level,
            final String format, final Object... pargs) {
      Object[] args = pargs;
      switch (level) {
        case TRACE:
          if (log.isTraceEnabled()) {
            if (marker == null) {
              log.trace(format, args);
            } else {
              log.trace(marker, format, args);
            }
            break;
          } else {
            if (args == pargs) {
              args = Arrays.append(args, LogAttribute.origLevel(level));
            }
          }
        case DEBUG:
          if (log.isDebugEnabled()) {
            if (marker == null) {
              log.debug(format, args);
            } else {
              log.debug(marker, format, args);
            }
            break;
          } else {
            if (args == pargs) {
              args = Arrays.append(args, LogAttribute.origLevel(level));
            }
          }
        case INFO:
          if (log.isInfoEnabled()) {
            if (marker == null) {
              log.info(format, args);
            } else {
              log.info(marker, format, args);
            }
            break;
          } else {
            if (args == pargs) {
              args = Arrays.append(args, LogAttribute.origLevel(level));
            }
          }
        case WARN:
          if (log.isWarnEnabled()) {
            if (marker == null) {
              log.warn(format, args);
            } else {
              log.warn(marker, format, args);
            }
           break;
         } else {
           if (args == pargs) {
             args = Arrays.append(args, LogAttribute.origLevel(level));
           }
         }
       case ERROR:
         if (log.isErrorEnabled()) {
           if (marker == null) {
             log.error(format, args);
           } else {
             log.error(marker, format, args);
           }
           break;
         } else {
           throw new IllegalStateException("Error not enabled for  " + log.getName());
         }
       default:
         throw new IllegalStateException("Invalid level " + level);
     }
   }
 
   @SuppressFBWarnings({"SA_LOCAL_SELF_COMPARISON", "SF_SWITCH_FALLTHROUGH"})
   public static void logUpgrade(final java.util.logging.Logger log, final Level plevel,
           final String format, final Object... pargs) {
     Level[] values = Level.values();
     Level level = plevel;
     while (true) {
       java.util.logging.Level julLevel = level.getJulLevel();
       if (log.isLoggable(julLevel)) {
         log.log(julLevel, format, pargs);
         return;
       }
       if (level == Level.ERROR) {
         throw new IllegalStateException();
       }
       level = values[level.ordinal() + 1];
     }
   }
 }