package dk.daoas.fulddaekning;

import java.io.File;
import java.io.FileReader;
import java.util.Map;
import java.util.Properties;
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() );
	

	Database db;
	WorkSet workset;
	
	Map<Integer, LookupWorker> workers = new ConcurrentHashMap<Integer, LookupWorker>();

	
	
	public Lookup(WorkSet workset, Database db) {
		this.db = db;
		this.workset = workset;
	}
	
	
	
	public void doLookup() throws BoundingBoxException {
		logger.info("Starting for postnr=" + workset.postnr);		
		
		long start1 = System.currentTimeMillis();		
		long start2 = 0;
		
		try {

			logger.info("Starter beregning for " + workset.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:" + workset.daekkedeAdresser.size() );
		logger.info("Antal ikke-daekkede:" + workset.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 WorkSet getWorkSet() {
		return workset;
	}

	
	/////////////////////////////
	// 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);
		
		Database db = new Database(conf);
		db.resetResultTable();

		
		InputWorker inputWorker = new InputWorker(db);
		Thread inputThread = new Thread(inputWorker);
		inputThread.start();
		
		
		long start = System.currentTimeMillis();
		boolean doContinue = true;
		
		while (inputWorker.queue.isEmpty() == true) {
			Thread.sleep(3); //Vent indtil at første arbejds sæt er på plads
		}
		
		
		while ( doContinue == true ) {
			WorkSet set = inputWorker.queue.poll();
			
			if (set != null) {
				Lookup lookup = new Lookup(set, db);
				lookup.doLookup();				
			} else {
				System.out.println("Buffer underrun");
				Thread.sleep(100);
			}
			
			if ( inputWorker.isDone == true && inputWorker.queue.isEmpty() == true)
				doContinue = false;
		}
		
		/*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("Largest workset: " + inputWorker.largestWorkSetPostnr + "=" + inputWorker.largestWorkSetCount);
		logger.info("Fuld load done : " + (now-start) );
		
		
		//Lookup lookup = new Lookup(7400, db);
		//lookup.doLookup();		
	}
	

	
}