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import org.json.JSONObject;
import java.io.*;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Objects;
public class FileUtility {
public static void deleteFile(String fileName) {
File file = new File(fileName);
if (file.exists()) {
if(!file.delete())
System.out.println("Failed to delete file: " + fileName);
}
}
public static void deleteALlFileOfType(String path, String fileExt){
File folder = new File(path);
File[] listOfFiles = folder.listFiles();
for(int i = 0; i< Objects.requireNonNull(listOfFiles).length; i++){
if(listOfFiles[i].isFile()){
if(listOfFiles[i].getName().endsWith(fileExt)){
listOfFiles[i].delete();
}
}
}
}
public static String downloadImage(String url, String fileName, String[] formats) {
boolean successfulDownload = false;
int formatIndex = 0;
String pathToImage = "";
while(!successfulDownload) {
System.out.println("Attempting to download image at: " + url+formats[formatIndex]);
// attempt to download image
for (int i = 0; i < 3; i++) {
try {
URL imageUrl = new URL(url + formats[formatIndex]);
InputStream in = imageUrl.openStream();
Path path = Paths.get(fileName);
OutputStream out = new BufferedOutputStream(Files.newOutputStream(path));
for (int b; (b = in.read()) != -1; ) {
out.write(b);
}
out.close();
in.close();
successfulDownload = true;
pathToImage = path.toAbsolutePath().toString();
break;
} catch (Exception e) {
System.out.println("Failed to download image at: " + url+formats[formatIndex]);
System.out.println("Retrying...");
}
}
if(formatIndex > formats.length - 1){
break;
}
if(!successfulDownload){
formatIndex++;
}
}
System.out.println("Image downloaded");
return pathToImage;
}
public static File findFileWithType(String directory, String fileExt){
System.out.println("Searching for file with extension: " + fileExt + " in directory: " + directory);
File dir = new File(directory);
File[] files = dir.listFiles();
assert files != null;
for(File file : files){
if(file.getName().endsWith(fileExt)){
System.out.println("Found file: " + file.getName());
return file;
}
}
System.out.println("No file found with extension: " + fileExt);
return null;
}
public static boolean findFileContainingString(String directory, String searchString){
File dir = new File(directory);
File[] files = dir.listFiles();
assert files != null;
for(File file : files){
if(file.getName().contains(searchString)){
return true;
}
}
return false;
}
public static String findJsonFile(String folderName) {
File folder = new File(folderName);
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < Objects.requireNonNull(listOfFiles).length; i++) {
if (listOfFiles[i].isFile()) {
if (listOfFiles[i].getName().endsWith(".json")) {
return listOfFiles[i].getAbsolutePath();
}
}
}
return null;
}
public static String[] parseInfoJSON(String json) {
JSONObject obj = new JSONObject(json);
String title = obj.getString("fulltitle");
String uploader = obj.getString("uploader");
String id = obj.getString("id");
String[] info = {title,uploader,id};
return info;
}
public static String jsonToString(String fileName) {
String json = "";
try {
BufferedReader br = new BufferedReader(new FileReader(fileName));
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
line = br.readLine();
}
json = sb.toString();
br.close();
} catch (Exception ignored) {
}
return json;
}
public static ArrayList<String> txtToList(String fileName) {
ArrayList<String> lines = new ArrayList<String>();
try {
FileReader fr = new FileReader(fileName);
BufferedReader br = new BufferedReader(fr);
String line;
while ((line = br.readLine()) != null) {
lines.add(line);
}
br.close();
} catch (Exception e) {
System.out.println("Error reading file: " + fileName);
}
return lines;
}
//get the path of all mp3 files in a directory and return them as a file arraylist
public static ArrayList<File> getMp3FilesAsList(String path){
ArrayList<File> mp3Files = new ArrayList<File>();
File folder = new File(path);
File[] listOfFiles = folder.listFiles();
for(int i = 0; i< Objects.requireNonNull(listOfFiles).length; i++){
if(listOfFiles[i].isFile()){
if(listOfFiles[i].getName().endsWith(".mp3")){
mp3Files.add(listOfFiles[i]);
}
}
}
return mp3Files;
}
}
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