import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.Date;

import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;

import com.lg.res.bean.common.FileData;




public class ImageTailorUtil {

    
    private static String DEFAULT_THUMB_PREVFIX = "thumb_";
    private static String DEFAULT_CUT_PREVFIX = "cut_";
    private static Boolean DEFAULT_FORCE = false;
    
    
    /**
    
     * @param srcImg    源图片
     * @param output    图片输出流
     * @param rect      需要截取部分的坐标和大小
     */
    public boolean cutImage(File srcImg, OutputStream output, Rectangle rect){
        if(srcImg.exists()){
            FileInputStream fis = null;
            ImageInputStream iis = null;
            try {
                fis = new FileInputStream(srcImg);
                // ImageIO 支持的图片类型 : [BMP, bmp, jpg, JPG, wbmp, jpeg, png, PNG, JPEG, WBMP, GIF, gif]
                String types = Arrays.toString(ImageIO.getReaderFormatNames()).replace("]", ",");
                String suffix = null;
                // 获取图片后缀
                if(srcImg.getName().indexOf(".") > -1) {
                    suffix = srcImg.getName().substring(srcImg.getName().lastIndexOf(".") + 1);
                }// 类型和图片后缀全部小写，然后判断后缀是否合法
                if(suffix == null || types.toLowerCase().indexOf(suffix.toLowerCase()+",") < 0){
                    System.out.println("Sorry, the image suffix is illegal. the standard image suffix is {}." + types);
                    return false;
                }
                // 将FileInputStream 转换为ImageInputStream
                iis = ImageIO.createImageInputStream(fis);
                // 根据图片类型获取该种类型的ImageReader
                ImageReader reader = ImageIO.getImageReadersBySuffix(suffix).next();
                reader.setInput(iis,true);
                ImageReadParam param = reader.getDefaultReadParam();
                param.setSourceRegion(rect);
                BufferedImage bi = reader.read(0, param);
                ImageIO.write(bi, suffix, output);
                return true;
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if(fis != null) fis.close();
                    if(iis != null) iis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }else {
            System.out.println("the src image is not exist.");
        }
        return false;
    }
    
    public void cutImage(File srcImg, OutputStream output, int x, int y, int width, int height){
        cutImage(srcImg, output, new Rectangle(x, y, width, height));
    }
    
    public FileData cutImage(File srcImg, String destImgPath, Rectangle rect){
        FileData fd = new FileData();
        String middledir = "cut_pic/"+SimpleDate.getCurDateLong();//中间路径
        File destImg = new File(destImgPath+"/"+middledir);
        if(!destImg.exists()){
            System.out.println("the dest "+destImgPath+"  folder is not exist.");
            destImg.mkdirs();
            System.out.println("create "+destImgPath+" folder ");
        }
        String cutFolderPath = destImg.getPath();
        try {
            
            if(!destImg.isDirectory()) cutFolderPath = destImg.getParent();
            if(!cutFolderPath.endsWith(File.separator)) cutFolderPath = cutFolderPath + File.separator;
            String fileName = srcImg.getName();
            String suffix = fileName.substring(fileName.lastIndexOf("."));
            String newfileName = DEFAULT_CUT_PREVFIX + "_" + new Date().getTime() + suffix;
            String outPutFilePath =cutFolderPath+ newfileName;
            System.out.println(outPutFilePath);
            boolean b = cutImage(srcImg, new FileOutputStream(outPutFilePath), rect);
            if (b) {
                fd.setTailorPicPath(middledir+"/"+newfileName);
                return fd;
            }
        } catch (FileNotFoundException e) {
            System.out.println("the dest "+destImgPath+"  is not exist.");
        }
        return null;
    }
    /**
     * 
     * @param srcImg  原图片
     * @param destImg 存放新生成的图片的文件夹路径
     * @param x    左上角 x轴坐标
     * @param y    左上角 y轴坐标
     * @param width 宽
     * @param height 高
     */
    public FileData cutImage(File srcImg, String destImg, int x, int y, int width, int height){
        if (!srcImg.exists()) {
            return null;
        }
        return cutImage(srcImg, destImg, new Rectangle(x, y, width, height));
    }
    /**
     * 
     * @param srcImg  原图片
     * @param destImg 存放新生成的图片的文件夹路径
     * @param x    左上角 x轴坐标
     * @param y    左上角 y轴坐标
     * @param width 宽
     * @param height 高
     */
    public FileData cutImage(String srcImg, String destImg, int x, int y, int width, int height){
        return cutImage(new File(srcImg), destImg, new Rectangle(x, y, width, height));
    }
}