/*
 * Copyright 2005 the original author or authors.
 * 
 * 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.wamblee.photos.model.filesystem;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

import org.wamblee.photos.model.Photo;
import org.wamblee.photos.model.PhotoEntry;

/**
 * Represents a photo stored on the file system.
 */
public class FileSystemPhoto implements Photo {

	private File _thumbnail;
	private File _photo;
	private String _path; 

	public FileSystemPhoto(File aThumbnail, File aPhoto, String aPath) {
		_thumbnail = aThumbnail;
		_photo = aPhoto;
		_path = aPath;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.wamblee.photos.database.PhotoEntry#getPath()
	 */
	public String getPath() {
		return _path;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.wamblee.photos.database.Photo#getThumbNail()
	 */
	public InputStream getThumbNail() throws IOException {
		return openFile(_thumbnail);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.wamblee.photos.database.Photo#getFile()
	 */
	public InputStream getPhoto() throws IOException {
		return openFile(_photo);
	}

	private InputStream openFile(File aFile) throws FileNotFoundException {
		return new FileInputStream(aFile);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.wamblee.photos.database.PhotoEntry#getId()
	 */
	public String getId() {
		return getId(_path);
	}
    
    public static String getId(String aPath) {
        int index = aPath.lastIndexOf("/");
        if (index < 0) {
            return aPath;
        }
        return aPath.substring(index + 1);
    }

	public String toString() {
		return print("");
	}

	String print(String aIndent) {
		return aIndent + "IMG: " + _photo.getName();
	}
    
    /* (non-Javadoc)
     * @see java.lang.Object#equals(java.lang.Object)
     */
    @Override
    public boolean equals(Object obj) {
        if ( !(obj instanceof Photo) ) { 
            return false; 
        }
        return getPath().equals( ((Photo)obj).getPath()); 
    }
    
    /* (non-Javadoc)
     * @see java.lang.Object#hashCode()
     */
    @Override
    public int hashCode() {
        return getPath().hashCode();
    }
    
    /* (non-Javadoc)
     * @see java.lang.Comparable#compareTo(java.lang.Object)
     */
    public int compareTo(PhotoEntry aEntry) {
        return getId().compareTo(((PhotoEntry)aEntry).getId()); 
    }
}