package prIndicePalabras;

import java.io.PrintWriter;
import java.util.Collection;
import java.util.Map;
import java.util.Scanner;

import java.util.SortedMap;
import java.util.SortedSet;
import java.util.StringJoiner;
import java.util.TreeMap;
import java.util.TreeSet;


public class IndiceLineas extends IndiceAbstracto {
	private SortedMap<String, SortedSet<Integer>> indice;

	public IndiceLineas() {
		indice = new TreeMap<>();
	}

	private void anyadir(String pal, int nlinea) {
		pal = pal.toLowerCase().trim();
		SortedSet<Integer> ln = indice.get(pal);
		if (ln == null) {
			ln = new TreeSet<>();
			indice.put(pal,ln);
		} else {
			ln.add(nlinea);
		}
	}

	public void resolver(String delim) {
		int nlinea = 0;
		for(String f:frases) {
			++nlinea;
			try (Scanner sc = new Scanner(f)) {
				sc.useDelimiter(delim);
				while(sc.hasNext()) {
					anyadir(sc.next(), nlinea);
				}
			}
		}
	}


	public void presentarIndice(PrintWriter pw) {
		for (Map.Entry<String, SortedSet<Integer>> e : indice.entrySet()) {
			System.out.printf("%-10s %s\n", e.getKey(), col2Str(e.getValue()));
		}
	}
	private String col2Str(Collection<Integer> col) {
		StringJoiner sj = new StringJoiner(",", "<", ">");
		for (Integer i: col) {
			sj.add(i.toString());
		}
		return sj.toString();
	}



















}