import java.io.File;

public class GenerateThumbnail {
	static final int MAX_DEPTH = 999; // Max 20 levels (directory nesting)

	static int count = 0;

	public static void scanFilesRecursively(File file, int depth) {
		try {
			String fileName = file.getName();
			String thumbnailFullPath = "";
			if (file.isDirectory()) {
				System.out.println(file.getPath());
			}
			if (file.isDirectory() && depth < MAX_DEPTH) {
				if (fileName.equalsIgnoreCase("lr")) {//Check if the directory
					// is the one which has
					// large images
					//System.out.println(file.getName()); // Print name.

					if (!(fileName.equals("lr"))) {//Make the folder name to
						// lowercase if not already
						// in lowercase
						String originalFileName = file.getCanonicalPath();
						String renamedFileName = originalFileName.substring(0,
								originalFileName.length() - 2)
								+ "lr";
						//System.out.println("Renamed filename : " +
						// renamedFileName);
						boolean success = file.renameTo(new File(
								renamedFileName));
						//System.out.println("Rename : " + success);
					}

					//Delete the thumbnails which already exists
					File parent = file.getParentFile();
					File[] files2Delete = parent.listFiles();
					for (int i = 0; i < files2Delete.length; i++) {
						//System.out.println("FileName : " +
						// files2Delete[i].getName());
						if (files2Delete[i].getName().substring(
								files2Delete[i].getName().lastIndexOf(".") + 1)
								.equalsIgnoreCase("jpg")) {
							files2Delete[i].delete();
						}
					}
				}
				File[] files = file.listFiles();
				for (int i = 0; i < files.length; i++) {
					scanFilesRecursively(files[i], depth + 1);
				}
				/*
				 * Below code is jdk1.5 for (File f : file.listFiles()) { // Go
				 * over each file/subdirectory. scanFilesRecursively(f,
				 * depth+1); }
				 */
				//System.out.println(".");
			} else {
				String parent = file.getParentFile().getName();
				String path = file.getPath();
				String imageFilePath = file.getCanonicalPath();
				//String fileName = file.getName();
				if (parent.equalsIgnoreCase("lr")
						&& (fileName.substring(fileName.lastIndexOf(".") + 1)
								.equalsIgnoreCase("jpg"))) {
					//Change the file name to lowercase
					String renamedFileName = imageFilePath.substring(0,
							imageFilePath.lastIndexOf("\\") + 1)
							+ fileName.toLowerCase();
					//System.out.println("renamedFileName : " +
					// renamedFileName);
					boolean success = file.renameTo(new File(renamedFileName));
					//System.out.println("Rename : " + success);

					String grandparentName = file.getParentFile()
							.getParentFile().getName();
					String grandparentNamePath = file.getParentFile()
							.getParentFile().getCanonicalPath();//getName();

					String thumbnailFileName = fileName.substring(0,
							fileName.lastIndexOf(".")).toLowerCase()
							+ "-t.jpg";
					//System.out.println("thumbnailFileName : " +
					// thumbnailFileName);
					thumbnailFullPath = grandparentNamePath + "\\"
							+ thumbnailFileName;
					//System.out.println(" fileName : " + fileName + "
					// thumbnailFullPath : " + thumbnailFullPath); // Print
					// name.
					Thumbnail.generateThumbnail(imageFilePath,
							thumbnailFullPath, 100, 75, 20, false);
					System.out.print(".");
					count++;
				}

			}
		} catch (Exception e) {
			System.out.println(e);
		}
	}

	public static void generate(String path) {
		File root = new File(path);
		if (root != null && root.isDirectory()) {
			scanFilesRecursively(root, 0);
		} else {
			System.out.println("Not a directory: " + root);
		}
	}

	public static void main(String[] args) {
		count = 0;
		//		generate("29");
		generate(args[0]);
		System.out.println("Number of thumbnails generated : " + count);
		System.out.println("Done.");
		/*
		 * File root = new File("AD"); if (root != null && root.isDirectory()) {
		 * scanFilesRecursively(root, 0); } else { System.out.println("Not a
		 * directory: " + root); }
		 */
	}

	private String parseExtension(String imageURL) {
		StringBuffer stb = new StringBuffer(imageURL);
		for (int i = imageURL.length() - 1; i > 0; i--) {
			if (stb.charAt(i) == '.') {
				return imageURL.substring(i + 1, imageURL.length());
			}
		}
		return "error";
	}
}