<?php


namespace App\Komma\Kms\QualityAssurance;


use Facebook\WebDriver\Remote\RemoteWebElement;
use Facebook\WebDriver\WebDriverBy;
use Laravel\Dusk\Browser;

/**
 * Trait ExtraDuskTools
 *
 * Notice. only works with laravel 5.7.
 * Include it in your service provider boot method
 *
 * @package App\Komma|Kms\QualityAssurance
 */
trait ExtraDuskTools
{
    public function setupExtraDuskTools()
    {
        //Helpers
        Browser::macro('scrollToElement', function ($elementSelector = null) {
            /** @var Browser $browser */
            $browser = $this;

            $elements = $browser->driver->findElements(WebDriverBy::cssSelector($elementSelector));
            if(count($elements) > 1) throw new \InvalidArgumentException('ExtraDuskTools:scrollToElement: The selector "'.$elementSelector.'" where we need to scroll to resolves to multiple elements. Not scrolling.');
            if(count($elements) == 0) throw new \InvalidArgumentException('ExtraDuskTools:scrollToElement: The selector "'.$elementSelector.'" where we need to scroll to does not resolve to an element. Not scrolling.');
            /** @var RemoteWebElement $offsetParent */
            try {
                $browser->waitUntil('document.querySelector(\''.$elementSelector.'\').offsetParent');
            } catch (\Exception $e) {
                throw new \InvalidArgumentException('ExtraDuskTools:scrollToElement: The selector "'.$elementSelector.'" does not have an offsetParent. Check that the element that we need to scroll to is visible. Not scrolling. (Checked by: "document.querySelector(\''.$elementSelector.'\').offsetParent"');
            }

            $scrollScript = 'document.querySelector(\''.$elementSelector.'\').offsetParent.scrollTop = document.querySelector(\''.$elementSelector.'\').offsetTop';
            $browser->waitUntil($scrollScript);

            return $this;
        });

        //Assertions
        /**
         * Extend the dusk browser with a method that can count elements
         */
        Browser::macro('assertElementsCountIs', function(int $count, string $selector) {
            PHPUnit::assertEquals( $count, count($this->elements( $selector )));
            return $this;
        });
    }
}