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63 lines
2 KiB
PHP
63 lines
2 KiB
PHP
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<?php
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declare(strict_types=1);
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/*
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* Copyright (C) 2023 Daniel Siepmann <coding@daniel-siepmann.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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namespace WerkraumMedia\ABTest;
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use WerkraumMedia\ABTest\Events\SwitchedToVariant;
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class MatomoTracker
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{
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private string $experiment = '';
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private string $variation = '';
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public function handleVariant(SwitchedToVariant $event): void
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{
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$this->experiment = $event->getOriginalPage()['tx_abtest_matomo_experiment_id'] ?? '';
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$this->variation = $event->getVariantPage()['tx_abtest_matomo_variant_id'] ?? '';
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}
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public function addScriptToHtmlMarkup(string $markup): string
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{
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if ($this->experiment === '' || $this->variation === '') {
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return $markup;
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}
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$script = $this->generateScript();
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return str_replace('</body>', $script . '</body>', $markup);
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}
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private function generateScript(): string
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{
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$experiment = htmlspecialchars($this->experiment);
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$variation = htmlspecialchars($this->variation);
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return '<script>'
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. 'var _paq = window._paq = window._paq || [];'
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. "_paq.push(['AbTesting::enter', {experiment: '$experiment', variation: '$variation'}]);"
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. '</script>'
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. PHP_EOL
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;
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}
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}
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