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package prerna.query.interpreters;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.tinkerpop.gremlin.process.traversal.P;
import org.apache.tinkerpop.gremlin.process.traversal.PBiPredicate;

public class GremlinRegexMatch implements PBiPredicate {

	Pattern pattern = null;
	private Mode mode;

	enum Mode {
		FIND, MATCH
	}

	public GremlinRegexMatch(String regex) {
		this(regex, Mode.FIND);
	}
	
	public GremlinRegexMatch(String regex, Mode mode) {
		this.mode = mode;
		pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
	}

	@Override
	public boolean test(final Object first, final Object second) {
		String str = first.toString();
		Matcher matcher = pattern.matcher(str);
		switch (mode) {
		case FIND:
			return matcher.find();
		case MATCH:
			return matcher.matches();
		}
		return false;
	}

	/**
	 * get a Regular expression predicate
	 * 
	 * @param regex
	 * @return - the predicate
	 */
	 public static P