package ru.kovbasa.pages;

import com.google.inject.Inject;
import org.openqa.selenium.By;
import org.openqa.selenium.ElementClickInterceptedException;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.support.ui.WebDriverWait;
import ru.kovbasa.config.TestConfig;
import ru.kovbasa.driver.WebDriverProvider;
import ru.kovbasa.utils.PageUtils;

import java.time.Duration;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;

public class MainPage {

    private final WebDriver driver;

    private final By menuLearningByTitle = By.cssSelector("span[title='Обучение']");
    private final By menuLearningByText = By.xpath("//span[normalize-space()='Обучение']");
    private final By categories = By.cssSelector("a[href*='/categories/']");

    @Inject
    public MainPage(WebDriverProvider provider) {
        this.driver = provider.getDriver();
    }

    public MainPage open() {
        driver.get(TestConfig.getBaseUrl());
        return this;
    }

    public String clickRandomCategory() {
        PageUtils.removeBottomBanner(driver);

        final WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(20));

        List<WebElement> els = findVisibleCategories(wait);
        if (els.isEmpty()) {
            clickLearningMenu(wait);
            els = wait.until(drv -> {
                final List<WebElement> found = drv.findElements(categories).stream()
                        .filter(WebElement::isDisplayed)
                        .toList();
                return found.isEmpty() ? null : found;
            });
        }

        final WebElement chosen = els.get(ThreadLocalRandom.current().nextInt(els.size()));
        final String href = chosen.getAttribute("href");
        System.out.println("Selected category href = " + href);

        ((JavascriptExecutor) driver)
                .executeScript("arguments[0].scrollIntoView({block:'center'});", chosen);

        try {
            chosen.click();
        } catch (ElementClickInterceptedException ignored) {
            new Actions(driver).moveToElement(chosen).click().perform();
        }

        final String categorySlug = href.substring(href.lastIndexOf('/') + 1);
        if (!driver.getCurrentUrl().contains(categorySlug)) {
            driver.get(TestConfig.getBaseUrl() + "/catalog/courses?categories=" + categorySlug);
        }

        return href;
    }

    private List<WebElement> findVisibleCategories(WebDriverWait wait) {
        return wait.until(drv -> drv.findElements(categories).stream()
                .filter(WebElement::isDisplayed)
                .toList());
    }

    private void clickLearningMenu(WebDriverWait wait) {
        WebElement menu = null;
        try {
            menu = wait.until(drv -> drv.findElement(menuLearningByTitle));
        } catch (NoSuchElementException ignored) {
        } catch (org.openqa.selenium.TimeoutException ignored) {
        }

        if (menu == null) {
            menu = wait.until(drv -> drv.findElement(menuLearningByText));
        }

        try {
            menu.click();
        } catch (ElementClickInterceptedException ignored) {
            ((JavascriptExecutor) driver).executeScript("arguments[0].click();", menu);
        }
    }
}