<?php

namespace App\Komma\Kms\QualityAssurance;

use Facebook\WebDriver\Remote\RemoteWebElement;
use Facebook\WebDriver\WebDriverBy;

/**
 * Trait ExtraDuskTools
 *
 * Notice. only works with laravel 5.7.
 * Include it in your service provider boot method
 */
trait ExtraDuskTools
{
    public function setupExtraDuskTools()
    {
        if (! $this->app->environment('local', 'testing')) {
            return;
        }

        //Helpers
        \Laravel\Dusk\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"');
            }

            $offsetParentTagNameScript = 'return (document.querySelector(\''.$elementSelector.'\') && document.querySelector(\''.$elementSelector.'\').offsetParent) ? document.querySelector(\''.$elementSelector.'\').offsetParent.tagName : "";';
            $altScrollScript = 'return document.querySelector(\''.$elementSelector.'\').scrollIntoView() === undefined;';
            $scrollScript = 'return document.querySelector(\''.$elementSelector.'\').offsetParent.scrollTop = document.querySelector(\''.$elementSelector.'\').offsetTop;';

            if ($browser->driver->executeScript($offsetParentTagNameScript) === 'BODY') {
                $browser->waitUntil($altScrollScript);
            } else {
                $browser->waitUntil($scrollScript);
            }

            return $this;
        });

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

            return $this;
        });
    }
}