/*
 * 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 com.adobe.ac.pmd.files.impl;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.logging.Logger;

import org.apache.commons.lang.StringUtils;

import com.adobe.ac.pmd.files.IFlexFile;
import com.adobe.ac.utils.StackTraceUtils;

/**
 * Abstract class representing a Flex File (either MXML or AS)
 */
abstract class AbstractFlexFile implements IFlexFile
{
   private static final Logger LOGGER = Logger.getLogger( AbstractFlexFile.class.getName() );

   /**
    * @param filePath
    * @param rootPath
    * @param className
    * @param fileSeparator
    * @return
    */
   protected static String computePackageName( final String filePath,
                                               final CharSequence rootPath,
                                               final String className,
                                               final String fileSeparator )
   {
      String temporaryPackage;

      temporaryPackage = filePath.replace( className,
                                           "" ).replace( rootPath,
                                                         "" ).replace( fileSeparator,
                                                                       "." );
      if ( temporaryPackage.endsWith( "." ) )
      {
         temporaryPackage = temporaryPackage.substring( 0,
                                                        temporaryPackage.length() - 1 );
      }
      if ( temporaryPackage.length() > 0
            && temporaryPackage.charAt( 0 ) == '.' )
      {
         temporaryPackage = temporaryPackage.substring( 1,
                                                        temporaryPackage.length() );
      }
      return temporaryPackage;
   }

   private static boolean doesCurrentLineContain( final String line,
                                                  final String search )
   {
      return line.contains( search );
   }

   private final String         className;
   private final File           file;
   private final List< String > lines;
   private final String         packageName;

   /**
    * @param underlyingFile
    * @param rootDirectory
    */
   protected AbstractFlexFile( final File underlyingFile,
                               final File rootDirectory )
   {
      final String filePath = underlyingFile.getPath();
      final CharSequence rootPath = rootDirectory == null ? ""
                                                         : rootDirectory.getPath();

      file = underlyingFile;
      className = underlyingFile.getName();
      packageName = computePackageName( filePath,
                                        rootPath,
                                        className,
                                        System.getProperty( "file.separator" ) );
      lines = new ArrayList< String >();
      try
      {
         String[] linesArray;
         linesArray = FileUtils.readLines( underlyingFile );
         for ( final String string : linesArray )
         {
            lines.add( string );
         }
      }
      catch ( final IOException e )
      {
         LOGGER.warning( StackTraceUtils.print( e ) );
      }
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#contains(java.lang.String, int)
    */
   public final boolean contains( final String stringToLookup,
                                  final Set< Integer > linesToBeIgnored )
   {
      int lineIndex = 1;
      boolean found = false;

      for ( final String line : lines )
      {
         if ( doesCurrentLineContain( line,
                                      stringToLookup )
               && !linesToBeIgnored.contains( lineIndex ) )
         {
            found = true;
            break;
         }
         lineIndex++;
      }
      return found;
   }

   /*
    * (non-Javadoc)
    * @see java.lang.Object#equals(java.lang.Object)
    */
   @Override
   public final boolean equals( final Object obj )
   {
      return obj != null
            && obj instanceof AbstractFlexFile && hashCode() == ( ( AbstractFlexFile ) obj ).hashCode();
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getClassName()
    */
   public final String getClassName()
   {
      return className;
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getCommentClosingTag()
    */
   public abstract String getCommentClosingTag();

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getCommentOpeningTag()
    */
   public abstract String getCommentOpeningTag();

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getFilename()
    */
   public final String getFilename()
   {
      return file.getName();
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getFilePath()
    */
   public final String getFilePath()
   {
      return file.toURI().getPath();
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getFullyQualifiedName()
    */
   public final String getFullyQualifiedName()
   {
      return ( StringUtils.isEmpty( packageName ) ? ""
                                                 : packageName
                                                       + "." )
            + className;
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getLineAt(int)
    */
   public String getLineAt( final int lineIndex )
   {
      return lines.get( lineIndex - 1 );
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getLines()
    */
   public final List< String > getLines()
   {
      return lines;
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getLinesNb()
    */
   public int getLinesNb()
   {
      return lines.size();
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#getPackageName()
    */
   public final String getPackageName()
   {
      return packageName;
   }

   /*
    * (non-Javadoc)
    * @see java.lang.Object#hashCode()
    */
   @Override
   public int hashCode()
   {
      return getFilePath().hashCode();
   }

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#isMainApplication()
    */
   public abstract boolean isMainApplication();

   /*
    * (non-Javadoc)
    * @see com.adobe.ac.pmd.files.IFlexFile#isMxml()
    */
   public abstract boolean isMxml();
}