package adventofcode;


import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Day1 {

    public static int solutionOne() {

        List<String> frequencies = Collections.emptyList();
        Path path = FileSystems.getDefault().getPath("input.txt");
        int frequency = 0;

        try {
            frequencies = Files.readAllLines(path);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        for (String freq : frequencies) {
            frequency += Integer.parseInt(freq);
        }

        return frequency;
    }

    public static Integer solutionTwo() {

        List<String> frequencies = Collections.emptyList();
        List<Integer> freqs = new ArrayList<>();
        Path path = FileSystems.getDefault().getPath("input.txt");
        int frequency = 0;

        try {
            frequencies = Files.readAllLines(path);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        for (String freq : frequencies) {
            freqs.add(frequency);
            frequency += Integer.parseInt(freq);
        }

        while (true) {

            for (String freq : frequencies) {
                frequency += Integer.parseInt(freq);
                if (freqs.contains(frequency)) {
                    return frequency;
                }
            }
        }

    }

}