package se.lth.cs.nlp.opinions;

import java.util.ArrayList;

import se.lth.cs.nlp.nlputils.ml_long.SymbolEncoder;

public class Labeling {

	public int[] labels;

	Labeling(int[] labels) {		
		this.labels = labels;
	}
	
	public Labeling(ArrayList<String[]> sen, SymbolEncoder enc) {
		if(sen.size() == 0)
			throw new IllegalArgumentException("empty");
		int n = sen.get(0).length - 1;
		if(n <= 0)
			throw new RuntimeException("no columns");
		labels = new int[sen.size()];
		for(int i = 0; i < sen.size(); i++) {
			String[] ss = sen.get(i);
			if(ss.length != n + 1)
				throw new IllegalArgumentException("illegal columns");
			labels[i] = enc.encode(ss[n]);				
		}
		DEBUG_LABEL_ENC = enc;
	}
	
	static SymbolEncoder DEBUG_LABEL_ENC;

	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append("[");
		for(int i = 0; i < labels.length; i++) {
			if(i > 0)
				sb.append(", ");
			sb.append(DEBUG_LABEL_ENC.decode(labels[i]));
		}
		sb.append("]");
		return sb.toString();
	}
	
	
	
}