package dk.daoas.fulddaekning;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.logging.Logger;


public class Database {	
	Logger logger = Logger.getLogger(Database.class.getName());
	
	
	Connection conn;
	Connection writeConn;
	
	PreparedStatement saveStmt;

	public Database(Properties conf)  throws SQLException,IOException {
		conn = getConnection(conf);
		writeConn = getConnection(conf);
		
		
		String sql = "INSERT INTO fulddaekning.afstand_anden_rute_thn (orgId,orgPostnr, orgAdresse,orgGadeid,orgHusnr,orgHusnrBogstav,orgLatitude,orgLongitude,orgRute,id,postnr,adresse,gadeid,husnr,husnrbogstav,latitude,longitude,rute,afstand,`timestamp`) "+
		"VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?, now() )";

		saveStmt = writeConn.prepareStatement(sql);		
		
	}
	
	public void resetResultTable() throws SQLException {
		logger.info("Truncating result table");
		String sql = "TRUNCATE TABLE fulddaekning.afstand_anden_rute_thn";
		writeConn.createStatement().executeUpdate(sql);
		
	}
	
	public Connection getConnection(Properties conf) throws SQLException, IOException {
		
		String db_host = conf.getProperty("DB_HOST");
		String db_user = conf.getProperty("DB_USER");
		String db_pass = conf.getProperty("DB_PASS");

		
		

	    Connection conn = null;
	    Properties connectionProps = new Properties();
	    connectionProps.put("user", db_user);
	    connectionProps.put("password", db_pass);

	        conn = DriverManager.getConnection(
	                   "jdbc:mysql://" +
	                   db_host +
	                   ":3306/",
	                   connectionProps);
	    logger.info("Connected to database");
	    return conn;
	}
	
	public BoundingBox getBoundingbox(int postnr) throws SQLException {
		
		String sql = 
				"select max(latitude) latmax, min(latitude) latmin, max(longitude) lngmax,min(longitude) lngmin  " + 
				"from fulddaekning.adressetabel WHERE postnr=? and rute is null;";
		
		PreparedStatement stmt = conn.prepareStatement(sql);
		stmt.setInt(1, postnr);
		
		ResultSet res = stmt.executeQuery();
		res.next(); //query returnerer altid 1 række
		
		BoundingBox bbox = new BoundingBox();
		bbox.latitudeMax = res.getDouble("latmax");
		bbox.latitudeMin = res.getDouble("latmin");
		bbox.longitudeMax = res.getDouble("lngmax");
		bbox.longitudeMin = res.getDouble("lngmin");
		
		res.close();
		stmt.close();
		
		return bbox;
	}
	
	public Queue<Adresse> hentIkkedaekkedeAdresser(int postnr)  throws SQLException {
		ConcurrentLinkedQueue<Adresse> queue = new ConcurrentLinkedQueue<Adresse>();
		
		String sql = "SELECT id,postnr,adresse,gadeid,husnr,husnrbogstav,latitude,longitude,rute FROM fulddaekning.adressetabel " +
				"WHERE rute IS NULL " +  //Ingen dækning
				"AND postnr=?  " +
				"AND latitude IS NOT NULL " +
				"AND longitude IS NOT NULL " +
				"AND gadeid IS NOT NULL ";
		PreparedStatement stmt = conn.prepareStatement(sql);
		stmt.setInt(1, postnr);
		
		queue.addAll( hentAdresseListe( stmt ) );
		return queue;
	}
	
	public List<Integer> hentPostnumre() throws SQLException {
		ArrayList<Integer> list = new ArrayList<Integer>();
		
		
		String sql = "SELECT postnr FROM fulddaekning.adressetabel WHERE distributor = 'DAO' and rute is not null GROUP BY postnr ORDER by postnr";
		PreparedStatement stmt = conn.prepareStatement(sql);
		ResultSet res = stmt.executeQuery();
		
		while (res.next()) {
			int postnr = res.getInt("postnr");
			list.add(postnr);
		}
		res.close();
		stmt.close();
		
		//list.add(8700);
		
		return list;
	}
	
	public ArrayList<Adresse> hentDaekkedeAdresser( BoundingBox bbox) throws SQLException {
		String sql = "SELECT id,postnr,adresse,gadeid,husnr,husnrbogstav,latitude,longitude,rute FROM fulddaekning.adressetabel " +
				"WHERE rute IS NOT NULL " + 
				"AND latitude BETWEEN ? AND ? " +
				"AND longitude BETWEEN ? AND ? " +
				"AND distributor = 'DAO' ";
		
		// Forward only + concur_read_only + fetchsize tvinger driver til at hente en række af gangen (bedre performance ved store result sets)
		// Se http://dev.mysql.com/doc/connector-j/en/connector-j-reference-implementation-notes.html 
		//PreparedStatement stmt = conn.prepareStatement(sql);
		PreparedStatement stmt = conn.prepareStatement(sql, java.sql.ResultSet.TYPE_FORWARD_ONLY, java.sql.ResultSet.CONCUR_READ_ONLY);
		stmt.setFetchSize(Integer.MIN_VALUE);
		
		stmt.setDouble(1, bbox.latitudeMin);
		stmt.setDouble(2, bbox.latitudeMax);
		stmt.setDouble(3, bbox.longitudeMin);
		stmt.setDouble(4, bbox.longitudeMax);
		
		return hentAdresseListe( stmt );
		
	}

	
	public synchronized void gemResultat(Adresse orgAdresse, Adresse bedsteAdresse, double bedsteAfstand) throws SQLException {
		/*String sql = "INSERT INTO fulddaekning.afstand_anden_rute_thn (orgId,orgPostnr, orgAdresse,orgGadeid,orgHusnr,orgHusnrBogstav,orgLatitude,orgLongitude,orgRute,id,postnr,adresse,gadeid,husnr,husnrbogstav,latitude,longitude,rute,afstand,`timestamp`) "+
				"VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?, now() )";
		
		PreparedStatement saveStmt = conn.prepareStatement(sql);*/
		
		saveStmt.setInt(1, orgAdresse.id);
		saveStmt.setInt(2, orgAdresse.postnr);
		saveStmt.setString(3, orgAdresse.adresse);
		saveStmt.setInt(4, orgAdresse.gadeid);
		saveStmt.setInt(5, orgAdresse.husnr);
		saveStmt.setString(6, orgAdresse.husnrbogstav);
		saveStmt.setDouble(7, orgAdresse.latitude);
		saveStmt.setDouble(8, orgAdresse.longitude);
		saveStmt.setString(9, orgAdresse.rute);
		
		
		saveStmt.setInt(10, bedsteAdresse.id);
		saveStmt.setInt(11, bedsteAdresse.postnr);
		saveStmt.setString(12, bedsteAdresse.adresse);
		saveStmt.setInt(13, bedsteAdresse.gadeid);
		saveStmt.setInt(14, bedsteAdresse.husnr);
		saveStmt.setString(15, bedsteAdresse.husnrbogstav);
		saveStmt.setDouble(16, bedsteAdresse.latitude);
		saveStmt.setDouble(17, bedsteAdresse.longitude);
		saveStmt.setString(18, bedsteAdresse.rute);
		
		saveStmt.setDouble(19, bedsteAfstand);
		
		saveStmt.executeUpdate();	
		saveStmt.clearParameters();
		
		
		//saveStmt.close();	
		
	}
	
		
	
	protected ArrayList<Adresse> hentAdresseListe(PreparedStatement stmt) throws SQLException{
		ArrayList<Adresse> list = new ArrayList<Adresse>( 30000 );
		
		//logger.info("Starting query");
		ResultSet res = stmt.executeQuery();
		//logger.info("Starting exec query done");
		
		while (res.next()) {
			Adresse adr = new Adresse();
			adr.id = res.getInt("id");
			adr.postnr = res.getInt("postnr");
			adr.adresse = res.getString("adresse");
			adr.gadeid = res.getInt("gadeid");
			adr.husnr = res.getInt("husnr");
			adr.husnrbogstav = res.getString("husnrbogstav");
			adr.latitude = res.getDouble("latitude");
			adr.longitude = res.getDouble("longitude");
			adr.rute = res.getString("rute");
			
			list.add(adr);
			
			//logger.info( "Adress:" + adr);
		}
				
		res.close();
		stmt.close();
		
		return list;
	}

	

}