import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
import org.openqa.selenium.support.PageFactory;

public class LoginPage {
    private final WebDriver driver;

    @FindBy(id = "username")
    private WebElement usernameInput;

    @FindBy(id = "password")
    private WebElement passwordInput;

    @FindBy(css = "button[type='submit']")
    private WebElement loginButton;

    @FindBy(id = "error-message")
    private WebElement errorMessage;

    public LoginPage(WebDriver driver) {
        this.driver = driver;
        PageFactory.initElements(driver, this);
    }

    public void login(String username, String password) {
        usernameInput.clear();
        usernameInput.sendKeys(username);
        passwordInput.clear();
        passwordInput.sendKeys(password);
        loginButton.click();
    }

    public String getErrorMessage() {
        return errorMessage.getText();
    }
}

public class LoginTest extends BaseTest {
    @Test
    public void loginWithValidCredentials() {
        LoginPage loginPage = new LoginPage(driver);
        loginPage.login("alice@example.com", "password123");

        DashboardPage dashboard = new DashboardPage(driver);
        Assert.assertTrue(dashboard.isDisplayed());
    }

    @Test
    public void loginWithInvalidPassword() {
        LoginPage loginPage = new LoginPage(driver);
        loginPage.login("alice@example.com", "wrong");
        Assert.assertEquals(loginPage.getErrorMessage(), "Invalid credentials");
    }
}