package io;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class Exercise2 {
    public static void main(String[] args) throws IOException {
        Exercise2 exercise2 = new Exercise2();
        exercise2.exercise();
    }

    static Scanner scanner = new Scanner(System.in);
    final String PATH = ("C:\\Users\\swiok\\IdeaProjects\\bank\\src\\main\\java\\io" + File.separator);


    public void exercise() throws IOException {
        String filename = readFilename();
        File file = getFile(filename);

        try {
            ensureFileExist(file);
            writer(file);
            counter(file);
        } catch (StringIndexOutOfBoundsException e) {
            System.out.println("za krotki plik");
        }
    }

    public String readFilename() {
        System.out.println("enter file name: ");
        return scanner.nextLine();
    }

    public File getFile(String filename) {
        return new File(PATH + filename + ".txt");
    }

    public void ensureFileExist(File file) throws IOException {
        if (file.exists()) {
            return;
        }

        file.createNewFile();
    }

    public void writer(File file) throws IOException {
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(file.getAbsolutePath(), true));

        bufferedWriter.write("x=100\n");
        bufferedWriter.write("z=331\n");
        bufferedWriter.write("y=100\n");
        bufferedWriter.write("y=300\n");
        bufferedWriter.write("z=500\n");
        bufferedWriter.write("y=150\n");
        bufferedWriter.write("z=100\n");
        bufferedWriter.write("x=320\n");
        bufferedWriter.close();
    }

    public void counter(File file) throws IOException {
        BufferedReader bf = new BufferedReader(new FileReader(file.getAbsolutePath()));
        scanner = new Scanner(bf);
        int x = 0, y = 0, z = 0;

        while (scanner.hasNextLine()) {
            String number = scanner.nextLine();1
            int parseStringToInt = Integer.parseInt(number.substring(2, number.length()));

            if (number.startsWith("x")) {
                x += parseStringToInt;
            }
            if (number.startsWith("y")) {
                y += parseStringToInt;
            }
            if (number.startsWith("z")) {
                z += parseStringToInt;
            }
        }

        System.out.println("x= " + x);
        System.out.println("y= " + y);
        System.out.println("z= " + z);
    }
}