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

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

class PasswordValidatorTest {

    static PasswordValidator passwordValidator = new PasswordValidator();

    @BeforeAll
    static void init() {
        passwordValidator = new PasswordValidator();
    }

    @Test
    void testMinimumPasswordLength() {
        assertFalse(passwordValidator.validate(""));

        passwordValidator.setMinLength(6);
        passwordValidator.setRequireUppercase(false);
        passwordValidator.setRequireLowercase(false);
        passwordValidator.setRequireDigit(false);
        passwordValidator.setCheckPwned(false);
        passwordValidator.setRequireSpecialChar(false);
        assertFalse(passwordValidator.validate("abcde"));
        assertTrue(passwordValidator.validate("abcdef"));
        assertTrue(passwordValidator.validate("abcdefg"));
    }

    @Test
    void testUppercasePasswordRequirement() {
        passwordValidator.setRequireUppercase(true);
        passwordValidator.setRequireLowercase(false);
        passwordValidator.setRequireDigit(false);
        passwordValidator.setCheckPwned(false);
        passwordValidator.setRequireSpecialChar(false);
        assertFalse(passwordValidator.validate("abcdef"));
        assertTrue(passwordValidator.validate("abCdef"));
        assertTrue(passwordValidator.validate("ABCDEF"));
    }

    @Test
    void testLowercasePasswordRequirement() {
        passwordValidator.setRequireUppercase(true);
        passwordValidator.setRequireLowercase(true);
        passwordValidator.setRequireDigit(false);
        passwordValidator.setCheckPwned(false);
        passwordValidator.setRequireSpecialChar(false);
        assertFalse(passwordValidator.validate("abcdef"));
        assertTrue(passwordValidator.validate("abCdef"));
        assertFalse(passwordValidator.validate("ABCDEF"));
    }

    @Test
    void testDigitsPasswordRequirement() {
        passwordValidator.setRequireUppercase(true);
        passwordValidator.setRequireLowercase(true);
        passwordValidator.setRequireDigit(true);
        passwordValidator.setCheckPwned(false);
        passwordValidator.setRequireSpecialChar(false);
        assertFalse(passwordValidator.validate("8"));
        assertFalse(passwordValidator.validate("12345678"));
        assertFalse(passwordValidator.validate("abcdef"));
        assertFalse(passwordValidator.validate("abcdef8"));
        assertFalse(passwordValidator.validate("abCdef"));
        assertFalse(passwordValidator.validate("ABCDEF"));
        assertFalse(passwordValidator.validate("ABCDEF8"));
        assertTrue(passwordValidator.validate("abCDE8F"));
    }

    @Test
    void testSpecialCharsPasswordRequirement() {
        passwordValidator.setRequireUppercase(true);
        passwordValidator.setRequireLowercase(true);
        passwordValidator.setRequireDigit(true);
        passwordValidator.setCheckPwned(false);
        passwordValidator.setRequireSpecialChar(true);
        assertFalse(passwordValidator.validate("*"));
        assertFalse(passwordValidator.validate("abCDE8F"));
        assertTrue(passwordValidator.validate("abCDE8_F"));
        assertTrue(passwordValidator.validate("abCDE*/8_F"));
    }

    /**
     * Requires a network connection and DNS to be set up.
     */
    @Test
    void testPasswordPwnedCheck() {
        passwordValidator.setRequireUppercase(true);
        passwordValidator.setRequireLowercase(true);
        passwordValidator.setRequireDigit(true);
        passwordValidator.setCheckPwned(true);
        assertFalse(passwordValidator.validate("8"));
        assertFalse(passwordValidator.validate("asdf12"));
        assertTrue(passwordValidator.validate("=phan0johB4aisae6Mie0jeip9Saejahc0iuvuth7ahv9uoni6o*_.+"));
    }

    @Test
    void testPasswordWordlistCheck() {
        passwordValidator.setRequireUppercase(true);
        passwordValidator.setRequireLowercase(true);
        passwordValidator.setRequireDigit(true);
        passwordValidator.setCheckPwned(true);
        passwordValidator.setCheckWordlist(true);
        assertFalse(passwordValidator.validate("8"));
        assertFalse(passwordValidator.validate("_Sonnenblume123"));
        assertTrue(passwordValidator.validate("=phan0johB4aisae6Mie0jeip9Saejahc0iuvuth7ahv9uoni6o*_.+"));
    }

    @Test
    void getSHA1Hash() {
        assertEquals("356A192B7913B04C54574D18C28D46E6395428AB".toLowerCase(), PasswordValidator.getSHA1Hash("1"));
        assertEquals("A233F0E898ED0661D6D47ED0958F16B52E537231".toLowerCase(), PasswordValidator.getSHA1Hash("asdf12"));
        assertNull(PasswordValidator.getSHA1Hash(""));
    }

    @Test
    void isPwned() {
        assertTrue(PasswordValidator.isPwned("asdf12"));
        assertFalse(PasswordValidator.isPwned("=phan0johB4aisae6Mie0jeip9Saejahc0iuvuth7ahv9uoni6o*_.+"));
        assertFalse(PasswordValidator.isPwned(""));
    }

    @Test
    void isInWordlist() {
        assertTrue(PasswordValidator.isInWordlist("Sonnenblume"));
        assertTrue(PasswordValidator.isInWordlist("_Sonnenblume123"));
        assertFalse(PasswordValidator.isInWordlist("=phan0johB4aisae6Mie0jeip9Saejahc0iuvuth7ahv9uoni6o*_.+"));
    }
}