package com.juick.components;

import org.apache.commons.lang3.math.NumberUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.env.Environment;
import rocks.xmpp.extensions.component.accept.ExternalComponent;
import rocks.xmpp.extensions.filetransfer.FileTransfer;
import rocks.xmpp.extensions.filetransfer.FileTransferManager;

import java.io.IOException;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;

/**
 * Created by vitalyster on 11.11.2016.
 */
public class XMPPFTServer {
    private static final Logger logger = LoggerFactory.getLogger(XMPPFTServer.class);

    public XMPPFTServer(Environment env) {
        ExternalComponent component = ExternalComponent.create(env.getProperty("component_name", "files"),
                env.getProperty("component_password", "secret"), env.getProperty("component_host", "localhost"),
                NumberUtils.toInt(env.getProperty("component_port", "5347"), 5347));
        String tmpDir = env.getProperty("upload_tmp_dir", "/tmp");
        FileTransferManager fileTransferManager = component.getManager(FileTransferManager.class);
        fileTransferManager.addFileTransferOfferListener(e -> {
            try {
                String mime = e.getMimeType();
                List<String> allowedTypes = new ArrayList<String>() {{ add("image/png"); add("image/jpeg"); }};
                if (allowedTypes.contains(mime)) {
                    FileTransfer ft = e.accept(Paths.get(tmpDir, e.getName())).get();
                    ft.addFileTransferStatusListener(st -> {
                        logger.debug(String.format("%s: received %d of %d", e.getName(), st.getBytesTransferred(), e.getSize()));
                        if (ft.isDone()) {
                            logger.info("transfer completed");
                        }
                    });
                    ft.transfer();
                    logger.info("transfer started");
                } else {
                    e.reject();
                }
            } catch (IOException | InterruptedException | ExecutionException e1) {
                logger.error("ft error", e1);
            }
        });
    }
}