<?php

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namespace EmbedPress\Providers;

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use Embera\Provider\ProviderAdapter;

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use Embera\Provider\ProviderInterface;

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use Embera\Url;

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(defined('ABSPATH') && defined('EMBEDPRESS_IS_LOADED')) or die("No direct script access allowed.");

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/**

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* Entity responsible to support GoogleDocs embeds.

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*

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* @package EmbedPress

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* @subpackage EmbedPress/Providers

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* @author EmbedPress <help@embedpress.com>

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* @copyright Copyright (C) 2023 WPDeveloper. All rights reserved.

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* @license GPLv3 or later

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* @since 1.0.0

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*/

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class GoogleDocs extends ProviderAdapter implements ProviderInterface

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{

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/**

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* Method that verifies if the embed URL belongs to GoogleDocs.

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*

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* @param Url $url

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* @return boolean

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* @since 1.0.0

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*

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*/

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public function validateUrl(Url $url)

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{

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return (bool) preg_match('~http[s]?:\/\/((?:www\.)?docs\.google\.com\/(?:.*/)?(?:document|presentation|spreadsheets|forms|drawings)\/[a-z0-9\/\?=_\-\.\,&%\$#\@\!\+]*)~i',

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$url);

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}

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/**

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* This method fakes an Oembed response.

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*

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* @since 1.0.0

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*

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* @return array

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*/

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public function fakeResponse()

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{

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$iframeSrc = html_entity_decode($this->url);

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// Check the type of document

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preg_match('~google\.com/(?:.+/)?(document|presentation|spreadsheets|forms|drawings)/~i', $iframeSrc, $matches);

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$type = $matches[1];

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switch ($type) {

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case 'document':

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// Check if the url still doesn't have the embedded param, and add if needed

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if ( ! preg_match('~([?&])embedded=true~i', $iframeSrc, $matches)) {

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if (substr_count($iframeSrc, '?')) {

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$iframeSrc .= '&embedded=true';

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} else {

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$iframeSrc .= '?embedded=true';

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}

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}

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break;

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case 'presentation':

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// Convert the /pub to /embed if needed

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if (preg_match('~/pub\?~i', $iframeSrc)) {

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$iframeSrc = str_replace('/pub?', '/embed?', $iframeSrc);

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}

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break;

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case 'spreadsheets':

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if (substr_count($iframeSrc, '?')) {

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$query = explode('?', $iframeSrc);

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$query = $query[1];

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$query = explode('&', $query);

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if ( ! empty($query)) {

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$hasWidgetParam = false;

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$hasHeadersParam = false;

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foreach ($query as $param) {

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if (substr_count($param, 'widget=')) {

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$hasWidgetParam = true;

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} elseif (substr_count($param, 'headers=')) {

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$hasHeadersParam = true;

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}

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}

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if ( ! $hasWidgetParam) {

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$iframeSrc .= '&widget=true';

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}

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if ( ! $hasHeadersParam) {

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$iframeSrc .= '&headers=false';

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}

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}

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} else {

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$iframeSrc .= '?widget=true&headers=false';

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}

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break;

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case 'forms':

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case 'drawings':

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break;

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}

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$width = isset( $this->config['maxwidth']) ? $this->config['maxwidth']: 600;

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$height = isset( $this->config['maxheight']) ? $this->config['maxheight']: 450;

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if ($type !== 'drawings') {

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$html = '<iframe src="' . esc_url($iframeSrc) . '" frameborder="0" width="'.$width.'" height="'.$height.'" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe>';

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} else {

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$width = isset( $this->config['maxwidth']) ? $this->config['maxwidth']: 960;

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$height = isset( $this->config['maxheight']) ? $this->config['maxheight']: 720;

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$html = '<img src="' . esc_url($iframeSrc) . '" width="'.esc_attr($width).'" height="'.esc_attr($height).'" />';

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}

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return [

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'type' => 'rich',

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'provider_name' => 'Google Docs',

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'provider_url' => 'https://docs.google.com',

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'title' => 'Unknown title',

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'html' => $html,

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'wrapper_class' => 'ose-google-docs-' . $type,

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];

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}

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/** inline @inheritDoc */

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public function modifyResponse( array $response = [])

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{

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return $this->fakeResponse();

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}

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}

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