ImgScroll/src/main/java/com/rarchives/ripme/ripper/DownloadFileThread.java

package com.rarchives.ripme.ripper;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;

import org.apache.log4j.Logger;
import org.jsoup.Connection.Response;
import org.jsoup.Jsoup;

import com.rarchives.ripme.utils.Utils;

public class DownloadFileThread extends Thread {

    private static final Logger logger = Logger.getLogger(DownloadFileThread.class);

    private URL url;
    private File saveAs;
    private int retries;

    public DownloadFileThread(URL url, File saveAs) {
        super();
        this.url = url;
        this.saveAs = saveAs;
        this.retries = Utils.getConfigInteger("download.retries", 1);
    }

    public void run() {
        // Check if file already exists
        if (saveAs.exists()) {
            if (Utils.getConfigBoolean("file.overwrite", false)) {
                logger.info("[!] File already exists and 'file.overwrite' is true, deleting: " + saveAs);
                saveAs.delete();
            } else {
                logger.info("[!] Not downloading " + url + " because file already exists: " + saveAs);
                return;
            }
        }

        int tries = 0; // Number of attempts to download
        do {
            try {
                logger.info("[ ] Downloading file from: " + url + (tries > 0 ? " Retry #" + tries : ""));
                tries += 1;
                Response response;
                response = Jsoup.connect(url.toExternalForm())
                        .ignoreContentType(true)
                        .execute();
                FileOutputStream out = (new FileOutputStream(saveAs));
                out.write(response.bodyAsBytes());
                out.close();
                break; // Download successful: break out of infinite loop
            } catch (IOException e) {
                logger.error("[!] Exception while downloading file: " + url + " - " + e.getMessage());
            }
            if (tries > this.retries) {
                logger.error("[!] Exceeded maximum retries (" + this.retries + ") for URL " + url);
                return;
            }
        } while (true);
        logger.info("[+] Download completed: " + url);
    }

}