package jcgp.backend.parser;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;

import jcgp.backend.function.FunctionSet;
import jcgp.backend.modules.problem.Problem;

public class FunctionParser {

private FunctionSet functionSet;
	
	private FunctionParser(Problem problem) {
		this.functionSet = problem.getFunctionSet();
	}

	public static void parseFunctions(File file, Problem problem) {
		FunctionParser pp = new FunctionParser(problem);
		
		FileReader fr;
		try {
			fr = new FileReader(file);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return;
		}
		
		Scanner in = new Scanner(fr);
		
		while (in.hasNextLine()) {
			String line = in.nextLine();
			if (line.substring(line.length() - 1).matches("[0-9]")) {
				pp.parseAndSet(line.split("[^0-9]+"));
			}
		}
		
		in.close();
	}
	
	private void parseAndSet(String[] splitString) {
		int functionIndex = Integer.parseInt(splitString[splitString.length - 1]);
		if (Integer.parseInt(splitString[0]) != 0) {
			functionSet.enableFunction(functionIndex);
		} else {
			functionSet.disableFunction(functionIndex);
		}
		
	}	
}