package dk.daoas.adressevedligehold.fileupload;

import java.io.IOException;
import java.util.List;

import org.apache.commons.fileupload.FileItem;

import com.google.common.base.CharMatcher;
import com.google.common.base.Splitter;

import dk.daoas.adressevedligehold.fileupload.AddressSourceEntry.EntryType;

public class AddressSourceNS extends AbstractAddressSource {
	
	enum NextUgedag {
		MANDAG,TIRSDAG,ONSDAG,TORSDAG,FREDAG,LORDAG,SONDAG
	}
		
	
	final Splitter splitter = Splitter.on(',')
								.trimResults( CharMatcher.is('"') );
	
	List<String> parts;
	
	
	NextUgedag nextUgedag = NextUgedag.MANDAG;
		
	public AddressSourceNS(FileItem file) throws Exception {
		super(file);
	}

	
	@Override
	public void validate() throws IOException {
		super.validatNoHeaderLine(22, ',');
	}


	@Override
	public AddressSourceEntry getNextEntry() throws IOException {
		if (nextUgedag == NextUgedag.MANDAG) {
			String line = br.readLine();
			if (line == null) // end of file
				return null;
			
			if (line.trim().equals(""))
				return null;
			parts = splitter.splitToList(line);
			
			if (parts.size() != 22) {
				throw new IOException("Not enough fields in line " + line);
			}
		}
		
		
		
		
		AddressSourceEntry entry = new AddressSourceEntry( EntryType.TypeAddressRange );
		entry.distributor = "NS";
		
		
		entry.gadeid = Integer.parseInt( parts.get(0) );
		entry.vejnavn = parts.get(1);
		//stednavn = parts.get(2);
		//ukendtt = parts.get(3);
		entry.postnr = Short.parseShort( parts.get(4) );
		entry.rute = parts.get(5);
		entry.husnr = Short.parseShort( parts.get(6) );
		entry.litra = parts.get(7);
		entry.tilHusnr = Short.parseShort( parts.get(8) );
		entry.tilLitra = parts.get(9);
		//sekvens = parts.get(10)
		//fradato = parts.get(11)
		//tildato = parts.get(12)
		//distributor = parts.get(13)
		//inspektorkode = parts.get(21)
		
		if (entry.tilLitra.equals("")) {
			entry.tilLitra = "Z"; // hvis der ikke er angivet en slut litra, så dækker de alle litra kombinationer
		}
		
		switch (nextUgedag) {		
		case MANDAG:
			entry.koreliste = parts.get(14);
			entry.ugedage = EntryUgedage.MAN;
			nextUgedag = NextUgedag.TIRSDAG;
			break;
		case TIRSDAG:
			entry.koreliste = parts.get(15);
			entry.ugedage = EntryUgedage.TIR;
			nextUgedag = NextUgedag.ONSDAG;
			break;
		case ONSDAG:
			entry.koreliste = parts.get(16);
			entry.ugedage = EntryUgedage.ONS;
			nextUgedag = NextUgedag.TORSDAG;
			break;
		case TORSDAG:
			entry.koreliste = parts.get(17);
			entry.ugedage = EntryUgedage.TOR;
			nextUgedag = NextUgedag.FREDAG;
			break;
		case FREDAG:
			entry.koreliste = parts.get(18);
			entry.ugedage = EntryUgedage.FRE;
			nextUgedag = NextUgedag.LORDAG;
			break;
		case LORDAG:
			entry.koreliste = parts.get(19);
			entry.ugedage = EntryUgedage.LOR;
			nextUgedag = NextUgedag.SONDAG;
			break;
		case SONDAG:
			entry.koreliste = parts.get(20);
			entry.ugedage = EntryUgedage.SON;
			nextUgedag = NextUgedag.MANDAG;
			break;
		default:
			throw new IOException("Ukendt ugedag:" + nextUgedag);
		}
		
		entry.rute = dirigeringsCache.getInstance(entry.rute);
		entry.koreliste = dirigeringsCache.getInstance(entry.koreliste);

		
		lineCount++;
		
		return entry;
	}
	
	@Override
	public String getDistributor() {
		return "NS";
	}
	
	@Override
	public boolean calculateDistances() {
		return false; //NS skal IKKE beregne afstande
	}

}