import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;

/**
 * @author Janyckee Jozz
 */
public class RenameAll {
    public static void deleteFolder(String folderPath) {
        File folder = new File(folderPath);
        if (folder.exists() && folder.isDirectory()) {
            File[] files = folder.listFiles();
            for (int i = 0; i < files.length; i++) {
                if (files[i].isDirectory()) {
                    deleteFolder(files[i].getAbsolutePath());
                } else {
                    files[i].delete();
                }
            }
            folder.delete();
        }
    }
    public static void copyFolder(String srcPath, String destPath, String camName) {
        File srcFolder = new File(srcPath);
        if (srcFolder.exists() && srcFolder.isDirectory()) {
            File destFolder = new File(destPath.replaceAll("mofei", camName));
            if (destFolder.exists() && destFolder.isDirectory()) {
                return ;
            } else {
                destFolder.mkdir();
            }
            File[] files = srcFolder.listFiles();
            for (int i = 0; i < files.length; i++) {
                if (files[i].isDirectory()) {
                    copyFolder(files[i].getAbsolutePath(), new File(destFolder,
                            files[i].getName()).getAbsolutePath(), camName);
                } else {
                    copyFile(files[i], new File(destFolder, files[i].getName()), camName);
                }
            }
        }
    }
    public static String readContent(Reader reader) throws IOException {
        char[] buf = new char[1024];
        StringBuffer strBuffer = new StringBuffer();
        int readLength = 0;
        while (readLength != -1) {
            readLength = reader.read(buf);
            if (readLength != -1) {
                strBuffer.append(buf, 0, readLength);
            }
        }
        return strBuffer.toString();
    }
    public static String readFileAll(String filePath) {
        try {
            FileReader reader = new FileReader(filePath);
            return readContent(reader);
        } catch (IOException e) {
            System.out.println("Error in reading " + filePath);
            return "";
        }
    }
    
    private static void copyFile(File srcFile, File destFile, String camName) {
        String path = srcFile.getAbsolutePath().toLowerCase();
        String newDestFileName = destFile.getAbsolutePath().replaceAll("mofei", camName);
        if (path.endsWith(".png") || path.endsWith(".gif")
                || path.endsWith(".jpg") || path.endsWith(".jpeg")
                || path.endsWith(".db") || path.endsWith(".project")) {
            try {
                FileInputStream fi = new FileInputStream(srcFile);
                FileOutputStream fo = new FileOutputStream(newDestFileName);
                byte[] buf = new byte[1024];
                int readLength = 0;
                while (readLength != -1) {
                    readLength = fi.read(buf);
                    if (readLength != -1) {
                        fo.write(buf, 0, readLength);
                    }
                }
                fo.close();
                fi.close();
            } catch (Exception e) {
                System.out.println("Error in copying " + srcFile.getAbsolutePath() + " to " + newDestFileName);
            }
        } else {
            String content = readFileAll(srcFile.getAbsolutePath());
            content = content.replaceAll("mofei", camName);
            try {
                FileWriter writer = new FileWriter(newDestFileName);
                writer.write(content);
                writer.close();
            } catch (IOException e) {
                System.out.println("Error in copying " + srcFile.getAbsolutePath() + " to " + newDestFileName);
            }
        }
    }

    public static void main(String[] args) {
        deleteFolder("/home/zhourj/joz/eclipse/workspace/cam-rename-all/dist");
        copyFolder("/home/zhourj/joz/eclipse/workspace/cam-news", "/home/zhourj/joz/eclipse/workspace/cam-rename-all/dist", "cam");
    }
}