/*
    * Copyright 2016 The Apache Software Foundation.
    *
    * 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
    *
    *      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.
   */
  package org.apache.commons.jexl3;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.stream.Collectors;
  
  import org.apache.commons.logging.Log;
  
  /**
   * A log implementation to help control tests results.
   */
  public class CaptureLog implements Log {
      static Object caller() {
          final StackTraceElement[] stack = new Exception().fillInStackTrace().getStackTrace();
          return stack[2];
      }
  
      private final List<Object[]> captured = new ArrayList<>();
  
      public CaptureLog() {
          this("org.apache.commons.jexl3");
      }
  
      public CaptureLog(final String name) {
          //super(name);
      }
  
      public int count(final String type) {
          int count = 0;
          for (final Object[] l : captured) {
              if (type.equals(l[0].toString())) {
                  count += 1;
              }
          }
          return count;
      }
  
      public List<String> getCapturedMessages() {
          return captured.stream()
                  .map(a -> a[2])
                  .filter(o -> o instanceof String)
                  .map(o -> (String) o).collect(Collectors.toList());
      }
  
      public void clear() {
          captured.clear();
      }
  
      @Override
      public void debug(final Object o) {
          captured.add(new Object[]{"debug", caller(), o});
      }
  
      @Override
      public void debug(final Object o, final Throwable thrwbl) {
          captured.add(new Object[]{"debug", caller(), o, thrwbl});
      }
  
      @Override
      public void error(final Object o) {
          captured.add(new Object[]{"error", caller(), o});
      }
  
      @Override
      public void error(final Object o, final Throwable thrwbl) {
          captured.add(new Object[]{"error", caller(), o, thrwbl});
      }
  
      @Override
      public void fatal(final Object o) {
          captured.add(new Object[]{"fatal", caller(), o});
      }
  
      @Override
      public void fatal(final Object o, final Throwable thrwbl) {
          captured.add(new Object[]{"fatal", caller(), o, thrwbl});
      }
  
      @Override
      public void info(final Object o) {
          captured.add(new Object[]{"info", caller(), o});
      }
  
      @Override
     public void info(final Object o, final Throwable thrwbl) {
         captured.add(new Object[]{"info", caller(), o, thrwbl});
     }
 
     @Override
     public boolean isDebugEnabled() {
         return true;
     }
 
     public boolean isEmpty() {
         return captured.isEmpty();
     }
 
     //@Override
     public boolean isEnabledFor(final int /*Priority*/ p) {
         return true;
     }
 
     @Override
     public boolean isErrorEnabled() {
         return true;
     }
 
     @Override
     public boolean isFatalEnabled() {
         return true;
     }
 
     @Override
     public boolean isInfoEnabled() {
         return true;
     }
 
     @Override
     public boolean isTraceEnabled() {
         return true;
     }
 
     @Override
     public boolean isWarnEnabled() {
         return true;
     }
 
     @Override
     public void trace(final Object o) {
         captured.add(new Object[]{"trace", caller(), o});
     }
 
     @Override
     public void trace(final Object o, final Throwable thrwbl) {
         captured.add(new Object[]{"trace", caller(), o, thrwbl});
     }
 
     @Override
     public void warn(final Object o) {
         captured.add(new Object[]{"warn", caller(), o});
     }
 
     @Override
     public void warn(final Object o, final Throwable thrwbl) {
         captured.add(new Object[]{"warn", caller(), o, thrwbl});
     }
 
 }