package com.company;

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

public class Rozgrywka {
    private String haslo;
    private String aktualneHaslo;
    private int pozostaloProb;

    public Rozgrywka() throws FileNotFoundException {
        this.haslo = losujHaslo();
        this.aktualneHaslo = generujPierwszeAktualneHaslo();
        this.pozostaloProb = 4;
        rozpocznij();
    }

    public String getHaslo() {
        return haslo;
    }

    public String getAktualneHaslo() {
        return aktualneHaslo;
    }

    public void setAktualneHaslo(String aktualneHaslo) {
        this.aktualneHaslo = aktualneHaslo;
    }

    public int getPozostaloProb() {
        return pozostaloProb;
    }

    public void setPozostaloProb(int pozostaloProb) {
        this.pozostaloProb = pozostaloProb;
    }

    public void rozpocznij(){
        System.out.println("Rozgrywka rozpoczęta. Słowo ma " + getHaslo().length() + " znaków.");
        while (true){
            Scanner s = new Scanner(System.in);
            System.out.println("=======================");
            System.out.println("Pozostało prób: " + getPozostaloProb());
            wyswietlHaslo(getAktualneHaslo());
            String newLetter = s.next();
            char character = newLetter.charAt(0);
            aktualizujHaslo(character);

            if (getPozostaloProb() == 0) {
                System.out.println("Przegrałeś!");
                break;
            } else if (compareStrings(getHaslo(), getAktualneHaslo())){
                System.out.println("Wygrałeś! Hasło to " + getAktualneHaslo());
                break;
            }
        }
    }

    public String generujPierwszeAktualneHaslo(){
        String haslo = "";
        int ileLiter = this.getHaslo().length();
        for (int i = 0; i < ileLiter; i++){
            haslo = haslo + "_";
        }
        return haslo;
    }

    public void aktualizujHaslo(char c){
        String aktualneHaslo = getAktualneHaslo();
        String noweHaslo = "";

        int occurrences = howManyOccurences(getHaslo(), c);
        System.out.println("Litera wystepuje " + occurrences + " razy");

        if (occurrences == 0){
            setPozostaloProb(getPozostaloProb() - 1);
        } else {
            noweHaslo = podmienLitery(getHaslo(), getAktualneHaslo(), c);
            setAktualneHaslo(noweHaslo);
        }

    }

    private int howManyOccurences(String word, char c){
        int howManyOccurrences = 0;

        for(int i = 0; i < word.length(); i++){
            if (word.charAt(i) == c){
                howManyOccurrences++;
            }
        }
        return howManyOccurrences;
    }

    private String podmienLitery(String original, String currentWord, char providedChar){
        String noweHaslo = "";

        String poprawneHaslo = original;
        String odgadywaneHaslo = currentWord;
        char literaDoPodmiany = providedChar;

        for (int i = 0; i < poprawneHaslo.length(); i++){
            if (poprawneHaslo.charAt(i) == literaDoPodmiany) {
                noweHaslo = noweHaslo + literaDoPodmiany;
            } else {
                if (odgadywaneHaslo.charAt(i) == poprawneHaslo.charAt(i)){
                    noweHaslo = noweHaslo + poprawneHaslo.charAt(i);
                } else {
                    noweHaslo = noweHaslo + "_";
                }
            }
        }

        return noweHaslo;
    }

    private void wyswietlHaslo(String haslo){
        String noweHaslo = "";

        for (int i = 0; i < haslo.length(); i++){
            noweHaslo = noweHaslo + haslo.charAt(i) + " ";
        }

        System.out.println(noweHaslo);
    }

    private boolean compareStrings(String a, String b){
        boolean areIdentical = false;
        for(int i = 0; i < a.length(); i++){
            if (a.charAt(i) == b.charAt(i)){
                areIdentical = true;
            } else areIdentical = false;
        }
        return areIdentical;
    }

    private static String losujHaslo() throws FileNotFoundException {
        ArrayList<String> hasla = new ArrayList<>();

        File myWord = new File("hasla.txt");
        Scanner wczytajHasla = new Scanner(myWord);
        while(wczytajHasla.hasNextLine()){
            hasla.add(wczytajHasla.nextLine());
        }

        int sizeOfHasla = hasla.size();
        int randomHaslo = (int)(Math.random() * sizeOfHasla);

        return hasla.get(randomHaslo);
    }
}