package dk.daoas.fulddaekning;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Queue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;

import dk.daoas.fulddaekning.BoundingBox.BoundingBoxException;

public class Lookup {
	static int max_workers;
	static boolean verbose;
	
	static Properties conf;
	static Logger logger = Logger.getLogger( Lookup.class.toString() );
	
	int postnr;
	Database db;
		
	ArrayList<Adresse> daekkedeAdresser;
	Queue<Adresse> queue;
	
	Map<Integer, LookupWorker> workers = new ConcurrentHashMap<Integer, LookupWorker>();

	
	
	public Lookup(int postnr, Database db) {
		this.postnr = postnr;
		this.db = db;
	}
	
	
	
	public void doLookup() throws BoundingBoxException {
		logger.info("Starting for postnr=" + postnr);
		
		int queueSize=-1;
		
		long start1 = System.currentTimeMillis();		
		long start2 = 0;
		
		try {
			BoundingBox bbox = db.getBoundingbox(postnr);
			bbox.validateBbox();
			
			logger.info("Bbox=" + bbox);
			bbox.adjustToMargin();
			logger.info("Bbox Adjusted=" + bbox);
			
			logger.info("Henter daekkede adresser i " + postnr);
			daekkedeAdresser = db.hentDaekkedeAdresser(bbox);
			
			logger.info("Henter _ikke_ daekkede adresser i " + postnr);
			queue = db.hentIkkedaekkedeAdresser(postnr);
			queueSize = queue.size();
			
			
			logger.info("Starter beregning for " + postnr);
			start2 = System.currentTimeMillis();
						 								
			for (int i =0; i<max_workers; i++) {
				LookupWorker worker = new LookupWorker(i, this);
				Thread t = new Thread(worker);
				t.start();
				
				workers.put(i, worker);
			}
			
			while (workers.size() > 0) {
				Thread.sleep(10);//wait for worker threads
			}
			
			
		} catch(Exception e) {
			logger.log(Level.WARNING, "Exception during lookup", e);
			
			if (e instanceof BoundingBoxException) {
				logger.severe( e.getMessage() );
				System.exit(1);
			}
			
		}
		long now = System.currentTimeMillis();
		
		logger.info("Antal daekkede:" + daekkedeAdresser.size() );
		logger.info("Antal ikke-daekkede:" + queueSize );
		
		logger.info("Done! elapsed=" + (now-start1) + "/" +  (now-start2) );
	}
	
	public void shutdownWorker(int workerid) {
		logger.info("Shutting down worker: " + workerid);
		workers.remove(workerid);
	}
	
	// Getters and setters
		
	///////////////////////////
	public Database getDb() {
		return db;
	}



	public ArrayList<Adresse> getDaekkedeAdresser() {
		return daekkedeAdresser;
	}

	public Queue<Adresse> getQueue() {
		return queue;
	}


	
	
	
	
	/////////////////////////////
	// Static functions



	
	public static void main(String[] args) throws Exception {
		
		File confFile = new File("fulddaekning.properties");
		if (! confFile.exists() ) {
			logger.warning("Config file not found");
			System.exit(1);
		}
				
		conf = new Properties();
		conf.load( new FileReader(confFile) );
		
		max_workers = Integer.parseInt( conf.getProperty("MAX_WORKERS") );
		logger.info("Starting with MAX_WORKERS:" + max_workers);
		
		verbose = Boolean.parseBoolean( conf.getProperty("VERBOSE") );
		logger.info("Starting with VERBOSE:" + verbose);
		
		Connection conn = getConnection();
		Database db = new Database(conn);

		
		
		
		
		long start = System.currentTimeMillis();
		
		logger.info("Finder postnumre");
		List<Integer> postnumre = db.hentPostnumre();
		
		for(Integer postnr : postnumre) {
			Lookup lookup = new Lookup(postnr, db);
			lookup.doLookup();			
		}
		
		long now = System.currentTimeMillis();
		
		logger.info("Fuld load done : " + (now-start) );
		
		
		//Lookup lookup = new Lookup(7400, db);
		//lookup.doLookup();		
	}
	
	public static Connection getConnection() 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;
	}
	
}