package eu.dnetlib.oa.graph.usagestatsbuild.export;

import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author D. Pierrakos, S. Zoupanos
 */
public class IrusStats {

	private String irusUKURL;

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

	public IrusStats() throws Exception {
	}

	public void processIrusStats() throws Exception {
		Statement stmt = ConnectDB.getHiveConnection().createStatement();
		ConnectDB.getHiveConnection().setAutoCommit(false);

		logger.info("Creating irus_downloads_stats_tmp table");
		String createDownloadsStats = "CREATE TABLE IF NOT EXISTS " + ConnectDB.getUsageStatsDBSchema()
			+ ".irus_downloads_stats_tmp "
			+ "(`source` string, "
			+ "`repository_id` string, "
			+ "`result_id` string, "
			+ "`date`	string, "
			+ "`count` bigint,	"
			+ "`openaire`	bigint)";
		stmt.executeUpdate(createDownloadsStats);
		logger.info("Created irus_downloads_stats_tmp table");

		logger.info("Inserting into irus_downloads_stats_tmp");
		String insertDStats = "INSERT INTO " + ConnectDB.getUsageStatsDBSchema() + ".irus_downloads_stats_tmp "
			+ "SELECT s.source, d.id AS repository_id, "
			+ "ro.id as result_id, CONCAT(YEAR(date), '/', LPAD(MONTH(date), 2, '0')) as date, s.count, '0' "
			+ "FROM " + ConnectDB.getUsageRawDataDBSchema() + ".sushilog s, "
			+ ConnectDB.getStatsDBSchema() + ".datasource_oids d, "
			+ ConnectDB.getStatsDBSchema() + ".result_oids ro "
			+ "WHERE s.repository=d.oid AND s.rid=ro.oid AND metric_type='ft_total' AND s.source='IRUS-UK'";
		stmt.executeUpdate(insertDStats);
		logger.info("Inserted into irus_downloads_stats_tmp");

		stmt.close();
		// ConnectDB.getHiveConnection().close();
	}

}