<?php

namespace App\Services;

use Exception;
use Facebook\WebDriver\Chrome\ChromeOptions;
use Facebook\WebDriver\Exception\Internal\UnexpectedResponseException;
use Facebook\WebDriver\Exception\UnknownErrorException;
use Facebook\WebDriver\Exception\UnrecognizedExceptionException;
use Facebook\WebDriver\Remote\DesiredCapabilities;
use Facebook\WebDriver\Remote\RemoteWebDriver;
use Facebook\WebDriver\WebDriverBy;
use Illuminate\Support\Str;
use Intervention\Image\Laravel\Facades\Image;
use Laravel\Dusk\Browser as DuskBrowser;
use Laravel\Dusk\Chrome\SupportsChrome;
use Laravel\Dusk\Concerns\ProvidesBrowser;

class Browser
{
    use ProvidesBrowser;
    use SupportsChrome;

    private $driver;

    private $tries = 0;

    private $screenshot = null;

    private $title = null;

    private $description = null;

    public function __construct(public string $url, public ?string $optionsSet = 'normal')
    {

    }

    public function name()
    {
        return Str::slug($this->url);
    }

    public function dataname()
    {
        return Str::slug('data_' . $this->url);
    }

    /**
     * Return screenshot content as a jpg resource
     */
    public function getScreenshot()
    {
        return $this->screenshot;
    }

    /**
     * Return page title
     */
    public function getTitle()
    {
        return $this->title;
    }

    /**
     * Return page description, if any is found
     */
    public function getDescription()
    {
        return $this->description;
    }

    /**
     * Navigate to specified URL
     */
    public function go()
    {
        $shouldRetry = false;

        DuskBrowser::$storeScreenshotsAt = storage_path('app/screenshots');
        DuskBrowser::$storeConsoleLogAt  = storage_path('logs/dusk');
        DuskBrowser::$storeSourceAt      = storage_path('app/sources');

        $this->closeAll();

        try {
            $this->browse(fn (DuskBrowser $browser) => $this->handleNavigation($browser));
        } catch (UnknownErrorException $ex) {
            // This could happen when SSL certificat is expired
        } catch (UnexpectedResponseException $ex) {
            dump($ex->getMessage());
        } catch (UnrecognizedExceptionException $ex) {
            // This could happen on - some - YouTube links. Using the "no-gpu"
            // preset fixes the problem
            $shouldRetry = true;

            $this->optionsSet = 'no-gpu';
        } finally {
            $this->closeAll();
        }

        $this->tries++;

        if ($shouldRetry) {
            if ($this->tries === 3) {
                throw new Exception(sprintf('Maximum tries reach for url %s', $this->url));
            }

            unset($this->driver);

            return $this->go();
        }
    }

    /**
     * Create the RemoteWebDriver instance.
     */
    protected function driver(): RemoteWebDriver
    {
        if (!isset($this->driver)) {
            $options = $this->getDriverOptions();

            $this->driver = RemoteWebDriver::create(
                $_ENV['DUSK_DRIVER_URL'],
                DesiredCapabilities::chrome()->setCapability(
                    ChromeOptions::CAPABILITY, $options
                )
            );
        }

        return $this->driver;
    }

    /**
     * Return driver options
     */
    protected function getDriverOptions()
    {
        $options = (new ChromeOptions)
            ->addArguments(
                collect(config(sprintf('browser.%s', $this->optionsSet)))
                    ->all()
            );

        return $options;
    }

    private function handleNavigation(DuskBrowser $browser)
    {
        $browser->resize(1920, 1080)
            ->visit($this->url)
            ->pause(1000);

        $this->screenshot  = $this->takeScreenshot($browser);
        $this->title       = $browser->driver->getTitle();
        $this->description = $this->findDescription($browser);

        $browser->quit();
    }

    private function findDescription(DuskBrowser $browser)
    {
        $description = null;

        try {
            $descriptionMeta = $browser->driver->findElement(WebDriverBy::xpath("//meta[@name='description']"));
            $description     = $descriptionMeta->getAttribute('content');
        } finally {
        }

        return $description;
    }

    private function takeScreenshot(DuskBrowser $browser)
    {
        $contents = $browser->driver->takeScreenshot();
        $image    = Image::read($contents);

        $this->screenshot = $image->toJpeg();

        return $this->screenshot;
    }
}