package eu.dnetlib.dhp.export.zenodo;

import java.io.Serializable;
import java.util.Optional;

import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.*;

import eu.dnetlib.dhp.application.ArgumentApplicationParser;
import eu.dnetlib.dhp.common.api.MissingConceptDoiException;
import eu.dnetlib.dhp.common.api.ZenodoAPIClient;

public class SendToZenodoHDFS implements Serializable {

	private static final Log log = LogFactory.getLog(SendToZenodoHDFS.class);

	public static void main(final String[] args) throws Exception, MissingConceptDoiException {
		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
			IOUtils
				.toString(
					SendToZenodoHDFS.class
						.getResourceAsStream(
							"/eu/dnetlib/dhp/export/upload_zenodo.json")));

		parser.parseArgument(args);

		final String hdfsPath = parser.get("hdfsPath");
		final String hdfsNameNode = parser.get("nameNode");
		final String access_token = parser.get("accessToken");
		final String connection_url = parser.get("connectionUrl");
		final String metadata = parser.get("metadata");
		final Boolean newDeposition = Boolean.valueOf(parser.get("newDeposition"));
		final String concept_rec_id = Optional
			.ofNullable(parser.get("conceptRecordId"))
			.orElse(null);

		Configuration conf = new Configuration();
		conf.set("fs.defaultFS", hdfsNameNode);

		FileSystem fileSystem = FileSystem.get(conf);

		RemoteIterator<LocatedFileStatus> fileStatusListIterator = fileSystem
			.listFiles(
				new Path(hdfsPath), true);
		ZenodoAPIClient zenodoApiClient = new ZenodoAPIClient(connection_url, access_token);
		if (newDeposition) {
			zenodoApiClient.newDeposition();
		} else {
			if (concept_rec_id == null) {
				throw new MissingConceptDoiException("No concept record id has been provided");
			}
			zenodoApiClient.newVersion(concept_rec_id);
		}

		while (fileStatusListIterator.hasNext()) {
			LocatedFileStatus fileStatus = fileStatusListIterator.next();

			Path p = fileStatus.getPath();
			String p_string = p.toString();
			if (!p_string.endsWith("_SUCCESS")) {
				// String tmp = p_string.substring(0, p_string.lastIndexOf("/"));
				String name = p_string.substring(p_string.lastIndexOf("/") + 1);
				log.info("Sending information for community: " + name);
				FSDataInputStream inputStream = fileSystem.open(p);
				zenodoApiClient.uploadIS(inputStream, name, fileStatus.getLen());

			}

		}

		zenodoApiClient.sendMretadata(metadata);
		zenodoApiClient.publish();

	}

}