import static org.junit.jupiter.api.Assertions.*;

import java.util.HashMap;
import java.util.Map;
import java.util.Random;

import org.junit.jupiter.api.RepeatedTest;
import org.junit.jupiter.api.Test;

class Tests {

		final String allChars = "abcdefghijklmnopqrstuvwxyz1234567890";
	@Test
	void test() {
		doTest(1, "12345 98212");
		doTest(1, "9999");
		doTest(-1, "abcdefg");
		doTest(-1,"zzzzzzz213 9ppppopppo2");
		doTest(0,"abcdef 12345");
    doTest(-1,"abcd 12345 xy");
	}
	@Test
	void hiddenTest() {
		doTest(0,"");
		doTest(0,"  ");
		doTest(0,"a1");
		doTest(1,"a1b2c3 d4e5f6");
		doTest(0,"a1b2c3 5y5");
		doTest(0,"a1b2c3     5y5");
		doTest(0,"5y5 a1b2c3   ");
		doTest(1,"9%$@");
		doTest(-1,"~$@#a");
		doTest(0,"~$@#");
		doTest(0,"0");
    doTest(-1,"abcd 12345 xa");
    doTest(-1,"abcd 12345 xy a bc");
    doTest(-1,"abcd 12345 xy bb aa aa");
	}
	
	@RepeatedTest(100)
	void randomTests() {	
		String randomString = generateRandomString();
		int sol = sol(randomString);
		doTest(sol, randomString);
	}
	private String generateRandomString() {
		Random rnd = new Random();
		StringBuilder randomString = new StringBuilder(); 
		int finalStringLength =rnd.nextInt(100);
	    for(int i=0;i<finalStringLength;i++) {
	    	int currentWordLength = rnd.nextInt(20);
			for(int j=0;j<currentWordLength;j++) {
				randomString.append(allChars.charAt(rnd.nextInt(36)));
				}
			randomString.append(" ");
			}
	    return randomString.toString().trim();
	}
  private void doTest(int expected, String str) { 
		int actual = NumbersVsLetters.numbersVsLetters(str); 
		String msg = String.format( "Incorrect answer for String = %s\n Expected: %s\n Actual: %s\n", str, expected, actual); 
		assertEquals(expected, actual, msg); 
		}
  private static int sol(String str) {
	    if (str.isEmpty() || str.isBlank()) return 0;
	    Map<Character, Integer> allChars = fillMap();
	    int score = 0;
	    int numberMultiplication = -1;
	    int characterSum = 0;
	    for (char c : str.toCharArray()) {
	        if (c == ' ') {
	            if (numberMultiplication > 0) score += Integer.compare(numberMultiplication, characterSum);
	            else if (characterSum > 0) score--;
	            numberMultiplication = -1;
	            characterSum = 0;
	        } else if (Character.isDigit(c)) numberMultiplication = Character.getNumericValue(c) * Math.abs(numberMultiplication);
            else if (Character.isAlphabetic(c)) characterSum += allChars.get(c);
	    }
	    if (numberMultiplication > 0) score += Integer.compare(numberMultiplication, characterSum);
	    else if (characterSum > 0) score--;
	    return Integer.compare(score, 0);
	}

	private static Map<Character, Integer> fillMap(){
		Map<Character, Integer> allChars = new HashMap<>();
		for (int i = 0; i < 26; i++) {
			char c = (char) ('a' + i);
		    allChars.put(c, i + 1);
		}
		return allChars;
	}
}