LBP
/
FressRSS
şunun yansıması https://github.com/FreshRSS/FreshRSS.git


			
				
					
						
						
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							<?php

class FreshRSS_Entry extends Minz_Model {
	const STATE_READ = 1;
	const STATE_NOT_READ = 2;
	const STATE_ALL = 3;
	const STATE_FAVORITE = 4;
	const STATE_NOT_FAVORITE = 8;

	/**
	 * @var string
	 */
	private $id = '0';

	/**
	 * @var string
	 */
	private $guid;

	/** @var string */
	private $title;
	private $authors;
	/** @var string */
	private $content;
	/** @var string */
	private $link;
	/** @var int */
	private $date;
	private $date_added = 0; //In microseconds
	/**
	 * @var string
	 */
	private $hash = '';
	/**
	 * @var bool|null
	 */
	private $is_read;
	/** @var bool|null */
	private $is_favorite;

	/**
	 * @var int
	 */
	private $feedId;

	/**
	 * @var FreshRSS_Feed|null
	 */
	private $feed;

	private $tags;
	private $attributes = [];

	public function __construct(int $feedId = 0, string $guid = '', string $title = '', string $authors = '', string $content = '',
			string $link = '', $pubdate = 0, bool $is_read = false, bool $is_favorite = false, string $tags = '') {
		$this->_title($title);
		$this->_authors($authors);
		$this->_content($content);
		$this->_link($link);
		$this->_date($pubdate);
		$this->_isRead($is_read);
		$this->_isFavorite($is_favorite);
		$this->_feedId($feedId);
		$this->_tags($tags);
		$this->_guid($guid);
	}

	/** @param array<string,mixed> $dao */
	public static function fromArray(array $dao): FreshRSS_Entry {
		if (empty($dao['content'])) {
			$dao['content'] = '';
		}
		if (!empty($dao['thumbnail'])) {
			$dao['attributes']['thumbnail'] = [
				'url' => $dao['thumbnail'],
			];
		}
		$entry = new FreshRSS_Entry(
			$dao['id_feed'] ?? 0,
			$dao['guid'] ?? '',
			$dao['title'] ?? '',
			$dao['author'] ?? '',
			$dao['content'],
			$dao['link'] ?? '',
			$dao['date'] ?? 0,
			$dao['is_read'] ?? false,
			$dao['is_favorite'] ?? false,
			$dao['tags'] ?? ''
		);
		if (!empty($dao['id'])) {
			$entry->_id($dao['id']);
		}
		if (!empty($dao['timestamp'])) {
			$entry->_date(strtotime($dao['timestamp']));
		}
		if (!empty($dao['categories'])) {
			$entry->_tags($dao['categories']);
		}
		if (!empty($dao['attributes'])) {
			$entry->_attributes('', $dao['attributes']);
		}
		return $entry;
	}

	public function id(): string {
		return $this->id;
	}
	public function guid(): string {
		return $this->guid;
	}
	public function title(): string {
		return $this->title == '' ? $this->guid() : $this->title;
	}
	public function author(): string {
		//Deprecated
		return $this->authors(true);
	}
	public function authors(bool $asString = false) {
		if ($asString) {
			return $this->authors == null ? '' : ';' . implode('; ', $this->authors);
		} else {
			return $this->authors;
		}
	}

	/**
	 * Basic test without ambition to catch all cases such as unquoted addresses, variants of entities, HTML comments, etc.
	 */
	private static function containsLink(string $html, string $link): bool {
		return preg_match('/(?P<delim>[\'"])' . preg_quote($link, '/') . '(?P=delim)/', $html) == 1;
	}

	private static function enclosureIsImage(array $enclosure): bool {
		$elink = $enclosure['url'] ?? '';
		$length = $enclosure['length'] ?? 0;
		$medium = $enclosure['medium'] ?? '';
		$mime = $enclosure['type'] ?? '';

		return $elink != '' && $medium === 'image' || strpos($mime, 'image') === 0 ||
			($mime == '' && $length == 0 && preg_match('/[.](avif|gif|jpe?g|png|svg|webp)$/i', $elink));
	}

	/**
	 * @param bool $withEnclosures Set to true to include the enclosures in the returned HTML, false otherwise.
	 * @param bool $allowDuplicateEnclosures Set to false to remove obvious enclosure duplicates (based on simple string comparison), true otherwise.
	 * @return string HTML content
	 */
	public function content(bool $withEnclosures = true, bool $allowDuplicateEnclosures = false): string {
		if (!$withEnclosures) {
			return $this->content;
		}

		$content = $this->content;

		$thumbnail = $this->attributes('thumbnail');
		if (!empty($thumbnail['url'])) {
			$elink = $thumbnail['url'];
			if ($allowDuplicateEnclosures || !self::containsLink($content, $elink)) {
			$content .= <<<HTML
<figure class="enclosure">
	<p class="enclosure-content">
		<img class="enclosure-thumbnail" src="{$elink}" alt="" />
	</p>
</figure>
HTML;
			}
		}

		$attributeEnclosures = $this->attributes('enclosures');
		if (empty($attributeEnclosures)) {
			return $content;
		}

		foreach ($attributeEnclosures as $enclosure) {
			$elink = $enclosure['url'] ?? '';
			if ($elink == '') {
				continue;
			}
			if (!$allowDuplicateEnclosures && self::containsLink($content, $elink)) {
				continue;
			}
			$credit = $enclosure['credit'] ?? '';
			$description = $enclosure['description'] ?? '';
			$length = $enclosure['length'] ?? 0;
			$medium = $enclosure['medium'] ?? '';
			$mime = $enclosure['type'] ?? '';
			$thumbnails = $enclosure['thumbnails'] ?? [];
			$etitle = $enclosure['title'] ?? '';

			$content .= '<figure class="enclosure">';

			foreach ($thumbnails as $thumbnail) {
				$content .= '<p><img class="enclosure-thumbnail" src="' . $thumbnail . '" alt="" title="' . $etitle . '" /></p>';
			}

			if (self::enclosureIsImage($enclosure)) {
				$content .= '<p class="enclosure-content"><img src="' . $elink . '" alt="" title="' . $etitle . '" /></p>';
			} elseif ($medium === 'audio' || strpos($mime, 'audio') === 0) {
				$content .= '<p class="enclosure-content"><audio preload="none" src="' . $elink
					. ($length == null ? '' : '" data-length="' . intval($length))
					. ($mime == '' ? '' : '" data-type="' . htmlspecialchars($mime, ENT_COMPAT, 'UTF-8'))
					. '" controls="controls" title="' . $etitle . '"></audio> <a download="" href="' . $elink . '">💾</a></p>';
			} elseif ($medium === 'video' || strpos($mime, 'video') === 0) {
				$content .= '<p class="enclosure-content"><video preload="none" src="' . $elink
					. ($length == null ? '' : '" data-length="' . intval($length))
					. ($mime == '' ? '' : '" data-type="' . htmlspecialchars($mime, ENT_COMPAT, 'UTF-8'))
					. '" controls="controls" title="' . $etitle . '"></video> <a download="" href="' . $elink . '">💾</a></p>';
			} else {	//e.g. application, text, unknown
				$content .= '<p class="enclosure-content"><a download="" href="' . $elink
					. ($mime == '' ? '' : '" data-type="' . htmlspecialchars($mime, ENT_COMPAT, 'UTF-8'))
					. ($medium == '' ? '' : '" data-medium="' . htmlspecialchars($medium, ENT_COMPAT, 'UTF-8'))
					. '" title="' . $etitle . '">💾</a></p>';
			}

			if ($credit != '') {
				$content .= '<p class="enclosure-credits">© ' . $credit . '</p>';
			}
			if ($description != '') {
				$content .= '<figcaption class="enclosure-description">' . $description . '</figcaption>';
			}
			$content .= "</figure>\n";
		}

		return $content;
	}

	/** @return iterable<array<string,string>> */
	public function enclosures(bool $searchBodyImages = false) {
		$attributeEnclosures = $this->attributes('enclosures');
		if (is_array($attributeEnclosures)) {
			// FreshRSS 1.20.1+: The enclosures are saved as attributes
			yield from $attributeEnclosures;
		}
		try {
			$searchEnclosures = !is_array($attributeEnclosures) && (strpos($this->content, '<p class="enclosure-content') !== false);
			$searchBodyImages &= (stripos($this->content, '<img') !== false);
			$xpath = null;
			if ($searchEnclosures || $searchBodyImages) {
				$dom = new DOMDocument();
				$dom->loadHTML('<?xml version="1.0" encoding="UTF-8" ?>' . $this->content, LIBXML_NONET | LIBXML_NOERROR | LIBXML_NOWARNING);
				$xpath = new DOMXpath($dom);
			}
			if ($searchEnclosures) {
				// Legacy code for database entries < FreshRSS 1.20.1
				$enclosures = $xpath->query('//div[@class="enclosure"]/p[@class="enclosure-content"]/*[@src]');
				foreach ($enclosures as $enclosure) {
					$result = [
						'url' => $enclosure->getAttribute('src'),
						'type' => $enclosure->getAttribute('data-type'),
						'medium' => $enclosure->getAttribute('data-medium'),
						'length' => $enclosure->getAttribute('data-length'),
					];
					if (empty($result['medium'])) {
						switch (strtolower($enclosure->nodeName)) {
							case 'img': $result['medium'] = 'image'; break;
							case 'video': $result['medium'] = 'video'; break;
							case 'audio': $result['medium'] = 'audio'; break;
						}
					}
					yield Minz_Helper::htmlspecialchars_utf8($result);
				}
			}
			if ($searchBodyImages) {
				$images = $xpath->query('//img');
				foreach ($images as $img) {
					$src = $img->getAttribute('src');
					if ($src == null) {
						$src = $img->getAttribute('data-src');
					}
					if ($src != null) {
						$result = [
							'url' => $src,
						];
						yield Minz_Helper::htmlspecialchars_utf8($result);
					}
				}
			}
		} catch (Exception $ex) {
			Minz_Log::debug(__METHOD__ . ' ' . $ex->getMessage());
		}
	}

	/**
	 * @return array<string,string>|null
	 */
	public function thumbnail(bool $searchEnclosures = true) {
		$thumbnail = $this->attributes('thumbnail');
		if (!empty($thumbnail['url'])) {
			return $thumbnail;
		}
		if ($searchEnclosures) {
			foreach ($this->enclosures(true) as $enclosure) {
				if (self::enclosureIsImage($enclosure)) {
					return $enclosure;
				}
			}
		}
		return null;
	}

	/** @return string HTML-encoded link of the entry */
	public function link(): string {
		return $this->link;
	}
	/** @return string|int */
	public function date(bool $raw = false) {
		if ($raw) {
			return $this->date;
		}
		return timestamptodate($this->date);
	}
	public function machineReadableDate(): string {
		return @date (DATE_ATOM, $this->date);
	}
	public function dateAdded(bool $raw = false, bool $microsecond = false) {
		if ($raw) {
			if ($microsecond) {
				return $this->date_added;
			} else {
				return intval(substr($this->date_added, 0, -6));
			}
		} else {
			$date = intval(substr($this->date_added, 0, -6));
			return timestamptodate($date);
		}
	}
	public function isRead() {
		return $this->is_read;
	}
	public function isFavorite() {
		return $this->is_favorite;
	}

	/**
	 * @return FreshRSS_Feed|null|false
	 */
	public function feed() {
		if ($this->feed === null) {
			$feedDAO = FreshRSS_Factory::createFeedDao();
			$this->feed = $feedDAO->searchById($this->feedId);
		}
		return $this->feed;
	}

	public function feedId(): int {
		return $this->feedId;
	}

	public function tags($asString = false) {
		if ($asString) {
			return $this->tags == null ? '' : '#' . implode(' #', $this->tags);
		} else {
			return $this->tags;
		}
	}

	public function attributes($key = '') {
		if ($key == '') {
			return $this->attributes;
		} else {
			return isset($this->attributes[$key]) ? $this->attributes[$key] : null;
		}
	}

	public function _attributes(string $key, $value) {
		if ($key == '') {
			if (is_string($value)) {
				$value = json_decode($value, true);
			}
			if (is_array($value)) {
				$this->attributes = $value;
			}
		} elseif ($value === null) {
			unset($this->attributes[$key]);
		} else {
			$this->attributes[$key] = $value;
		}
	}

	public function hash(): string {
		if ($this->hash == '') {
			//Do not include $this->date because it may be automatically generated when lacking
			$this->hash = md5($this->link . $this->title . $this->authors(true) . $this->content . $this->tags(true));
		}
		return $this->hash;
	}

	public function _hash(string $value) {
		$value = trim($value);
		if (ctype_xdigit($value)) {
			$this->hash = substr($value, 0, 32);
		}
		return $this->hash;
	}

	public function _id($value) {
		$this->id = $value;
		if ($this->date_added == 0) {
			$this->date_added = $value;
		}
	}
	public function _guid(string $value) {
		if ($value == '') {
			$value = $this->link;
			if ($value == '') {
				$value = $this->hash();
			}
		}
		$this->guid = $value;
	}
	public function _title(string $value) {
		$this->hash = '';
		$this->title = trim($value);
	}
	public function _author(string $value) {
		//Deprecated
		$this->_authors($value);
	}
	public function _authors($value) {
		$this->hash = '';
		if (!is_array($value)) {
			if (strpos($value, ';') !== false) {
				$value = htmlspecialchars_decode($value, ENT_QUOTES);
				$value = preg_split('/\s*[;]\s*/', $value, -1, PREG_SPLIT_NO_EMPTY);
				$value = Minz_Helper::htmlspecialchars_utf8($value);
			} else {
				$value = preg_split('/\s*[,]\s*/', $value, -1, PREG_SPLIT_NO_EMPTY);
			}
		}
		$this->authors = $value;
	}
	public function _content(string $value) {
		$this->hash = '';
		$this->content = $value;
	}
	public function _link(string $value) {
		$this->hash = '';
		$this->link = $value;
	}
	public function _date($value) {
		$this->hash = '';
		$value = intval($value);
		$this->date = $value > 1 ? $value : time();
	}
	public function _dateAdded($value, bool $microsecond = false) {
		if ($microsecond) {
			$this->date_added = $value;
		} else {
			$this->date_added = $value * 1000000;
		}
	}
	public function _isRead($value) {
		$this->is_read = $value === null ? null : (bool)$value;
	}
	public function _isFavorite($value) {
		$this->is_favorite = $value === null ? null : (bool)$value;
	}

	/** @param FreshRSS_Feed|null $feed */
	public function _feed($feed) {
		$this->feed = $feed;
		$this->feedId = $this->feed == null ? 0 : $this->feed->id();
	}

	/** @param int|string $id */
	private function _feedId($id) {
		$this->feed = null;
		$this->feedId = intval($id);
	}

	public function _tags($value) {
		$this->hash = '';
		if (!is_array($value)) {
			$value = preg_split('/\s*[#,]\s*/', $value, -1, PREG_SPLIT_NO_EMPTY);
		}
		$this->tags = $value;
	}

	public function matches(FreshRSS_BooleanSearch $booleanSearch): bool {
		$ok = true;
		foreach ($booleanSearch->searches() as $filter) {
			if ($filter instanceof FreshRSS_BooleanSearch) {
				// BooleanSearches are combined by AND (default) or OR or AND NOT (special cases) operators and are recursive
				if ($filter->operator() === 'OR') {
					$ok |= $this->matches($filter);
				} elseif ($filter->operator() === 'AND NOT') {
					$ok &= !$this->matches($filter);
				} else {	// AND
					$ok &= $this->matches($filter);
				}
			} elseif ($filter instanceof FreshRSS_Search) {
				// Searches are combined by OR and are not recursive
				$ok = true;
				if ($filter->getMinDate()) {
					$ok &= strnatcmp($this->id, $filter->getMinDate() . '000000') >= 0;
				}
				if ($ok && $filter->getNotMinDate()) {
					$ok &= strnatcmp($this->id, $filter->getNotMinDate() . '000000') < 0;
				}
				if ($ok && $filter->getMaxDate()) {
					$ok &= strnatcmp($this->id, $filter->getMaxDate() . '000000') <= 0;
				}
				if ($ok && $filter->getNotMaxDate()) {
					$ok &= strnatcmp($this->id, $filter->getNotMaxDate() . '000000') > 0;
				}
				if ($ok && $filter->getMinPubdate()) {
					$ok &= $this->date >= $filter->getMinPubdate();
				}
				if ($ok && $filter->getNotMinPubdate()) {
					$ok &= $this->date < $filter->getNotMinPubdate();
				}
				if ($ok && $filter->getMaxPubdate()) {
					$ok &= $this->date <= $filter->getMaxPubdate();
				}
				if ($ok && $filter->getNotMaxPubdate()) {
					$ok &= $this->date > $filter->getNotMaxPubdate();
				}
				if ($ok && $filter->getFeedIds()) {
					$ok &= in_array($this->feedId, $filter->getFeedIds());
				}
				if ($ok && $filter->getNotFeedIds()) {
					$ok &= !in_array($this->feedId, $filter->getFeedIds());
				}
				if ($ok && $filter->getAuthor()) {
					foreach ($filter->getAuthor() as $author) {
						$ok &= stripos(implode(';', $this->authors), $author) !== false;
					}
				}
				if ($ok && $filter->getNotAuthor()) {
					foreach ($filter->getNotAuthor() as $author) {
						$ok &= stripos(implode(';', $this->authors), $author) === false;
					}
				}
				if ($ok && $filter->getIntitle()) {
					foreach ($filter->getIntitle() as $title) {
						$ok &= stripos($this->title, $title) !== false;
					}
				}
				if ($ok && $filter->getNotIntitle()) {
					foreach ($filter->getNotIntitle() as $title) {
						$ok &= stripos($this->title, $title) === false;
					}
				}
				if ($ok && $filter->getTags()) {
					foreach ($filter->getTags() as $tag2) {
						$found = false;
						foreach ($this->tags as $tag1) {
							if (strcasecmp($tag1, $tag2) === 0) {
								$found = true;
							}
						}
						$ok &= $found;
					}
				}
				if ($ok && $filter->getNotTags()) {
					foreach ($filter->getNotTags() as $tag2) {
						$found = false;
						foreach ($this->tags as $tag1) {
							if (strcasecmp($tag1, $tag2) === 0) {
								$found = true;
							}
						}
						$ok &= !$found;
					}
				}
				if ($ok && $filter->getInurl()) {
					foreach ($filter->getInurl() as $url) {
						$ok &= stripos($this->link, $url) !== false;
					}
				}
				if ($ok && $filter->getNotInurl()) {
					foreach ($filter->getNotInurl() as $url) {
						$ok &= stripos($this->link, $url) === false;
					}
				}
				if ($ok && $filter->getSearch()) {
					foreach ($filter->getSearch() as $needle) {
						$ok &= (stripos($this->title, $needle) !== false || stripos($this->content, $needle) !== false);
					}
				}
				if ($ok && $filter->getNotSearch()) {
					foreach ($filter->getNotSearch() as $needle) {
						$ok &= (stripos($this->title, $needle) === false && stripos($this->content, $needle) === false);
					}
				}
				if ($ok) {
					return true;
				}
			}
		}
		return $ok;
	}

	public function applyFilterActions(array $titlesAsRead = []) {
		if ($this->feed != null) {
			if ($this->feed->attributes('read_upon_reception') ||
				($this->feed->attributes('read_upon_reception') === null && FreshRSS_Context::$user_conf->mark_when['reception'])) {
				$this->_isRead(true);
			}
			if (isset($titlesAsRead[$this->title()])) {
				Minz_Log::debug('Mark title as read: ' . $this->title());
				$this->_isRead(true);
			}
			foreach ($this->feed->filterActions() as $filterAction) {
				if ($this->matches($filterAction->booleanSearch())) {
					foreach ($filterAction->actions() as $action) {
						switch ($action) {
							case 'read':
								$this->_isRead(true);
								break;
							case 'star':
								$this->_isFavorite(true);
								break;
							case 'label':
								//TODO: Implement more actions
								break;
						}
					}
				}
			}
		}
	}

	public function isDay(int $day, int $today): bool {
		$date = $this->dateAdded(true);
		switch ($day) {
		case FreshRSS_Days::TODAY:
			$tomorrow = $today + 86400;
			return $date >= $today && $date < $tomorrow;
		case FreshRSS_Days::YESTERDAY:
			$yesterday = $today - 86400;
			return $date >= $yesterday && $date < $today;
		case FreshRSS_Days::BEFORE_YESTERDAY:
			$yesterday = $today - 86400;
			return $date < $yesterday;
		default:
			return false;
		}
	}

	/**
	 * @param array<string,mixed> $attributes
	 */
	public static function getContentByParsing(string $url, string $path, array $attributes = [], int $maxRedirs = 3): string {
		$cachePath = FreshRSS_Feed::cacheFilename($url, $attributes, FreshRSS_Feed::KIND_HTML_XPATH);
		$html = httpGet($url, $cachePath, 'html', $attributes);
		if (strlen($html) > 0) {
			$doc = new DOMDocument();
			$doc->loadHTML($html, LIBXML_NONET | LIBXML_NOERROR | LIBXML_NOWARNING);
			$xpath = new DOMXPath($doc);

			if ($maxRedirs > 0) {
				//Follow any HTML redirection
				$metas = $xpath->query('//meta[@content]');
				/** @var array<DOMElement> $metas */
				foreach ($metas as $meta) {
					if (strtolower(trim($meta->getAttribute('http-equiv'))) === 'refresh') {
						$refresh = preg_replace('/^[0-9.; ]*\s*(url\s*=)?\s*/i', '', trim($meta->getAttribute('content')));
						$refresh = SimplePie_Misc::absolutize_url($refresh, $url);
						if ($refresh != false && $refresh !== $url) {
							return self::getContentByParsing($refresh, $path, $attributes, $maxRedirs - 1);
						}
					}
				}
			}

			$base = $xpath->evaluate('normalize-space(//base/@href)');
			if ($base == false || !is_string($base)) {
				$base = $url;
			} elseif (substr($base, 0, 2) === '//') {
				//Protocol-relative URLs "//www.example.net"
				$base = (parse_url($url, PHP_URL_SCHEME) ?? 'https') . ':' . $base;
			}

			$content = '';
			$nodes = $xpath->query(new Gt\CssXPath\Translator($path));
			if ($nodes != false) {
				foreach ($nodes as $node) {
					if (!empty($attributes['path_entries_filter'])) {
						$filterednodes = $xpath->query(new Gt\CssXPath\Translator($attributes['path_entries_filter']), $node);
						foreach ($filterednodes as $filterednode) {
							$filterednode->parentNode->removeChild($filterednode);
						}
					}
					$content .= $doc->saveHtml($node) . "\n";
				}
			}
			$html = trim(sanitizeHTML($content, $base));
			return $html;
		} else {
			throw new Exception();
		}
	}

	public function loadCompleteContent(bool $force = false): bool {
		// Gestion du contenu
		// Trying to fetch full article content even when feeds do not propose it
		$feed = $this->feed();
		if ($feed != null && trim($feed->pathEntries()) != '') {
			$entryDAO = FreshRSS_Factory::createEntryDao();
			$entry = $force ? null : $entryDAO->searchByGuid($this->feedId, $this->guid);

			if ($entry) {
				// l’article existe déjà en BDD, en se contente de recharger ce contenu
				$this->content = $entry->content(false);
			} else {
				try {
					// The article is not yet in the database, so let’s fetch it
					$fullContent = self::getContentByParsing(
						htmlspecialchars_decode($this->link(), ENT_QUOTES),
						htmlspecialchars_decode($feed->pathEntries(), ENT_QUOTES),
						$feed->attributes()
					);
					if ('' !== $fullContent) {
						$fullContent = "<!-- FULLCONTENT start //-->{$fullContent}<!-- FULLCONTENT end //-->";
						$originalContent = preg_replace('#<!-- FULLCONTENT start //-->.*<!-- FULLCONTENT end //-->#s', '', $this->content());
						switch ($feed->attributes('content_action')) {
							case 'prepend':
								$this->content = $fullContent . $originalContent;
								break;
							case 'append':
								$this->content = $originalContent . $fullContent;
								break;
							case 'replace':
							default:
								$this->content = $fullContent;
								break;
						}

						return true;
					}
				} catch (Exception $e) {
					// rien à faire, on garde l’ancien contenu(requête a échoué)
					Minz_Log::warning($e->getMessage());
				}
			}
		}
		return false;
	}

	public function toArray(): array {
		return array(
			'id' => $this->id(),
			'guid' => $this->guid(),
			'title' => $this->title(),
			'author' => $this->authors(true),
			'content' => $this->content(false),
			'link' => $this->link(),
			'date' => $this->date(true),
			'hash' => $this->hash(),
			'is_read' => $this->isRead(),
			'is_favorite' => $this->isFavorite(),
			'id_feed' => $this->feedId(),
			'tags' => $this->tags(true),
			'attributes' => $this->attributes(),
		);
	}

	/**
	 * Integer format conversion for Google Reader API format
	 * @param string|int $dec Decimal number
	 * @return string 64-bit hexa http://code.google.com/p/google-reader-api/wiki/ItemId
	 */
	private static function dec2hex($dec): string {
		return PHP_INT_SIZE < 8 ? // 32-bit ?
			str_pad(gmp_strval(gmp_init($dec, 10), 16), 16, '0', STR_PAD_LEFT) :
			str_pad(dechex($dec), 16, '0', STR_PAD_LEFT);
	}

	/**
	 * Some clients (tested with News+) would fail if sending too long item content
	 * @var int
	 */
	const API_MAX_COMPAT_CONTENT_LENGTH = 500000;

	/**
	 * N.B.: To avoid expensive lookups, ensure to set `$entry->_feed($feed)` before calling this function.
	 * N.B.: You might have to populate `$entry->_tags()` prior to calling this function.
	 * @param string $mode Set to `'compat'` to use an alternative Unicode representation for problematic HTML special characters not decoded by some clients;
	 * 	set to `'freshrss'` for using FreshRSS additions for internal use (e.g. export/import).
	 * @return array<string,mixed> A representation of this entry in a format compatible with Google Reader API
	 */
	public function toGReader(string $mode = ''): array {

		$feed = $this->feed();
		$category = $feed == null ? null : $feed->category();

		$item = [
			'id' => 'tag:google.com,2005:reader/item/' . self::dec2hex($this->id()),
			'crawlTimeMsec' => substr($this->dateAdded(true, true), 0, -3),
			'timestampUsec' => '' . $this->dateAdded(true, true), //EasyRSS & Reeder
			'published' => $this->date(true),
			// 'updated' => $this->date(true),
			'title' => $this->title(),
			'canonical' => [
				['href' => htmlspecialchars_decode($this->link(), ENT_QUOTES)],
			],
			'alternate' => [
				[
					'href' => htmlspecialchars_decode($this->link(), ENT_QUOTES),
					'type' => 'text/html',
				],
			],
			'categories' => [
				'user/-/state/com.google/reading-list',
			],
			'origin' => [
				'streamId' => 'feed/' . $this->feedId,
			],
		];
		if ($mode === 'compat') {
			$item['title'] = escapeToUnicodeAlternative($this->title(), false);
			unset($item['alternate'][0]['type']);
			$item['summary'] = [
				'content' => mb_strcut($this->content(true), 0, self::API_MAX_COMPAT_CONTENT_LENGTH, 'UTF-8'),
			];
		} else {
			$item['content'] = [
				'content' => $this->content(false),
			];
		}
		if ($mode === 'freshrss') {
			$item['guid'] = $this->guid();
		}
		if ($category != null && $mode !== 'freshrss') {
			$item['categories'][] = 'user/-/label/' . htmlspecialchars_decode($category->name(), ENT_QUOTES);
		}
		if ($feed != null) {
			$item['origin']['htmlUrl'] = htmlspecialchars_decode($feed->website());
			$item['origin']['title'] = $feed->name();	//EasyRSS
			if ($mode === 'compat') {
				$item['origin']['title'] = escapeToUnicodeAlternative($feed->name(), true);
			} elseif ($mode === 'freshrss') {
				$item['origin']['feedUrl'] = htmlspecialchars_decode($feed->url());
			}
		}
		foreach ($this->enclosures() as $enclosure) {
			if (!empty($enclosure['url'])) {
				$media = [
						'href' => $enclosure['url'],
						'type' => $enclosure['type'] ?? $enclosure['medium'] ??
							(self::enclosureIsImage($enclosure) ? 'image' : ''),
					];
				if (!empty($enclosure['length'])) {
					$media['length'] = intval($enclosure['length']);
				}
				$item['enclosure'][] = $media;
			}
		}
		$author = $this->authors(true);
		$author = trim($author, '; ');
		if ($author != '') {
			if ($mode === 'compat') {
				$item['author'] = escapeToUnicodeAlternative($author, false);
			} else {
				$item['author'] = $author;
			}
		}
		if ($this->isRead()) {
			$item['categories'][] = 'user/-/state/com.google/read';
		} elseif ($mode === 'freshrss') {
			$item['categories'][] = 'user/-/state/com.google/unread';
		}
		if ($this->isFavorite()) {
			$item['categories'][] = 'user/-/state/com.google/starred';
		}
		foreach ($this->tags() as $tagName) {
			$item['categories'][] = 'user/-/label/' . htmlspecialchars_decode($tagName, ENT_QUOTES);
		}
		return $item;
	}
}