package dk.daoas.naermestepshop;

import geocode.GeoPoint;
import geocode.kdtree.KDTree;

import java.io.File;
import java.io.FileReader;
import java.util.List;
import java.util.Properties;
import java.util.logging.Logger;

public class PshopMain {
	
	static Logger logger = Logger.getLogger(PshopMain.class.getName());
	static final String CONFIG_FILENAME = "naermestepshop.properties";
	
	
	public static void main(String[] args) throws Exception {
		
		File confFile = new File( CONFIG_FILENAME );
		if (! confFile.exists() ) {
			logger.warning("Config file not found: " + CONFIG_FILENAME);
			System.exit(1);
		}
		
		Properties props = new Properties();
		props.load( new FileReader(confFile) );
		
		
		Database db = new Database(props);
		
		List<GeoPoint> dao = (List<GeoPoint>) db.getShops("DAO");
		List<GeoPoint> swip = (List<GeoPoint>) db.getShops("SWIP");
		List<GeoPoint> gls = (List<GeoPoint>) db.getShops("GLS");
		
		KDTree<GeoPoint> daoTree = new KDTree<GeoPoint>(dao);
		
		KDTree<GeoPoint> swipTree = new KDTree<GeoPoint>(swip);
		KDTree<GeoPoint> glsTree = new KDTree<GeoPoint>(gls);
		
		logger.info("Start fetching addr");
		
		List<Adresse> adresser = db.getAdresser();
		
		db.resetResultTable();//Nulstil resultat tabellen inden vi starter beregningen
		
		logger.info("Start calculating");
		for (Adresse addr : adresser) {
			ShopResult daoResult = new ShopResult();
			daoResult.shop = (Shop) daoTree.findNearest(addr);
			daoResult.distance = GeoPointHelper.beregnAfstand(addr, daoResult.shop);
			
			ShopResult swipResult = new ShopResult();
			swipResult.shop = (Shop) swipTree.findNearest(addr);
			swipResult.distance = GeoPointHelper.beregnAfstand(addr, swipResult.shop);
			
			ShopResult glsResult = new ShopResult();
			glsResult.shop = (Shop) glsTree.findNearest(addr);
			glsResult.distance = GeoPointHelper.beregnAfstand(addr, glsResult.shop);
			
			if ( Double.isNaN(daoResult.distance)  || Double.isNaN(swipResult.distance) || Double.isNaN(glsResult.distance)) {
				System.out.println("Addr " + addr);
				System.out.println("DAO  " + daoResult);
				System.out.println("Swip " + swipResult);
				System.out.println("GLS  " + glsResult);
			}
			
			db.gemResultat(addr, daoResult, swipResult, glsResult);
		}

		db.saveBatch();
		
		logger.info("done");
			
	}
	
	/*
	 
	@Deprecated
	public static GeoPoint bruteforceSearch(GeoPoint needle, List<GeoPoint> haystack) {
		GeoPoint nearest = null;
		double bestDistance = 999999.999;
		for (GeoPoint current : haystack) {
			double distance = GeoPointHelper.beregnAfstand(current, needle);
			
			if (distance < bestDistance) {
				nearest = current;
				bestDistance = distance;
			}
		}
		
		
		return nearest;
	} 
	 
	 
			/*Shop nearest2 = (Shop) bruteforceSearch(addr, dao);
			if (nearest1.ktonr != nearest2.ktonr) {
				System.out.println("Mistmatch " + addr + "   " + nearest1 + " / " + nearest2);
			}

	 
	GeoPoint reference = new GeoPoint(55.8727, 9.88129);
		
	final int MAX = 10000;
	
	TimingHelper t1 = new TimingHelper();
	for (int i = 0; i<MAX; i++) {
		daoTree.findNearest(reference);
	}
	t1.printElapsed("Tree ");
	
	TimingHelper t2 = new TimingHelper();
	for (int i = 0; i<MAX; i++) {
		bruteforceSearch(reference, dao);
	}
	t2.printElapsed("Brute ");
	*/
}