MyShaarli/application/bookmark/BookmarkFileService.php

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<?php
namespace Shaarli\Bookmark;
use Exception;
use Shaarli\Bookmark\Exception\BookmarkNotFoundException;
use Shaarli\Bookmark\Exception\EmptyDataStoreException;
use Shaarli\Config\ConfigManager;
use Shaarli\Formatter\BookmarkMarkdownFormatter;
use Shaarli\History;
use Shaarli\Legacy\LegacyLinkDB;
use Shaarli\Legacy\LegacyUpdater;
use Shaarli\Render\PageCacheManager;
use Shaarli\Updater\UpdaterUtils;
/**
* Class BookmarksService
*
* This is the entry point to manipulate the bookmark DB.
* It manipulates loads links from a file data store containing all bookmarks.
*
* It also triggers the legacy format (bookmarks as arrays) migration.
*/
class BookmarkFileService implements BookmarkServiceInterface
{
/** @var Bookmark[] instance */
protected $bookmarks;
/** @var BookmarkIO instance */
protected $bookmarksIO;
/** @var BookmarkFilter */
protected $bookmarkFilter;
/** @var ConfigManager instance */
protected $conf;
/** @var History instance */
protected $history;
/** @var PageCacheManager instance */
protected $pageCacheManager;
/** @var bool true for logged in users. Default value to retrieve private bookmarks. */
protected $isLoggedIn;
/**
* @inheritDoc
*/
public function __construct(ConfigManager $conf, History $history, $isLoggedIn)
{
$this->conf = $conf;
$this->history = $history;
$this->pageCacheManager = new PageCacheManager($this->conf->get('resource.page_cache'));
$this->bookmarksIO = new BookmarkIO($this->conf);
$this->isLoggedIn = $isLoggedIn;
if (!$this->isLoggedIn && $this->conf->get('privacy.hide_public_links', false)) {
$this->bookmarks = [];
} else {
try {
$this->bookmarks = $this->bookmarksIO->read();
} catch (EmptyDataStoreException $e) {
$this->bookmarks = new BookmarkArray();
if ($isLoggedIn) {
$this->save();
}
}
if (! $this->bookmarks instanceof BookmarkArray) {
$this->migrate();
exit(
'Your data store has been migrated, please reload the page.'. PHP_EOL .
'If this message keeps showing up, please delete data/updates.txt file.'
);
}
}
$this->bookmarkFilter = new BookmarkFilter($this->bookmarks);
}
/**
* @inheritDoc
*/
public function findByHash($hash)
{
$bookmark = $this->bookmarkFilter->filter(BookmarkFilter::$FILTER_HASH, $hash);
// PHP 7.3 introduced array_key_first() to avoid this hack
$first = reset($bookmark);
if (! $this->isLoggedIn && $first->isPrivate()) {
throw new Exception('Not authorized');
}
return $bookmark;
}
/**
* @inheritDoc
*/
public function findByUrl($url)
{
return $this->bookmarks->getByUrl($url);
}
/**
* @inheritDoc
*/
public function search($request = [], $visibility = null, $caseSensitive = false, $untaggedOnly = false)
{
if ($visibility === null) {
$visibility = $this->isLoggedIn ? BookmarkFilter::$ALL : BookmarkFilter::$PUBLIC;
}
// Filter bookmark database according to parameters.
$searchtags = isset($request['searchtags']) ? $request['searchtags'] : '';
$searchterm = isset($request['searchterm']) ? $request['searchterm'] : '';
return $this->bookmarkFilter->filter(
BookmarkFilter::$FILTER_TAG | BookmarkFilter::$FILTER_TEXT,
[$searchtags, $searchterm],
$caseSensitive,
$visibility,
$untaggedOnly
);
}
/**
* @inheritDoc
*/
public function get($id, $visibility = null)
{
if (! isset($this->bookmarks[$id])) {
throw new BookmarkNotFoundException();
}
if ($visibility === null) {
$visibility = $this->isLoggedIn ? BookmarkFilter::$ALL : BookmarkFilter::$PUBLIC;
}
$bookmark = $this->bookmarks[$id];
if (($bookmark->isPrivate() && $visibility != 'all' && $visibility != 'private')
|| (! $bookmark->isPrivate() && $visibility != 'all' && $visibility != 'public')
) {
throw new Exception('Unauthorized');
}
return $bookmark;
}
/**
* @inheritDoc
*/
public function set($bookmark, $save = true)
{
if ($this->isLoggedIn !== true) {
throw new Exception(t('You\'re not authorized to alter the datastore'));
}
if (! $bookmark instanceof Bookmark) {
throw new Exception(t('Provided data is invalid'));
}
if (! isset($this->bookmarks[$bookmark->getId()])) {
throw new BookmarkNotFoundException();
}
$bookmark->validate();
$bookmark->setUpdated(new \DateTime());
$this->bookmarks[$bookmark->getId()] = $bookmark;
if ($save === true) {
$this->save();
$this->history->updateLink($bookmark);
}
return $this->bookmarks[$bookmark->getId()];
}
/**
* @inheritDoc
*/
public function add($bookmark, $save = true)
{
if ($this->isLoggedIn !== true) {
throw new Exception(t('You\'re not authorized to alter the datastore'));
}
if (! $bookmark instanceof Bookmark) {
throw new Exception(t('Provided data is invalid'));
}
if (! empty($bookmark->getId())) {
throw new Exception(t('This bookmarks already exists'));
}
$bookmark->setId($this->bookmarks->getNextId());
$bookmark->validate();
$this->bookmarks[$bookmark->getId()] = $bookmark;
if ($save === true) {
$this->save();
$this->history->addLink($bookmark);
}
return $this->bookmarks[$bookmark->getId()];
}
/**
* @inheritDoc
*/
public function addOrSet($bookmark, $save = true)
{
if ($this->isLoggedIn !== true) {
throw new Exception(t('You\'re not authorized to alter the datastore'));
}
if (! $bookmark instanceof Bookmark) {
throw new Exception('Provided data is invalid');
}
if ($bookmark->getId() === null) {
return $this->add($bookmark, $save);
}
return $this->set($bookmark, $save);
}
/**
* @inheritDoc
*/
public function remove($bookmark, $save = true)
{
if ($this->isLoggedIn !== true) {
throw new Exception(t('You\'re not authorized to alter the datastore'));
}
if (! $bookmark instanceof Bookmark) {
throw new Exception(t('Provided data is invalid'));
}
if (! isset($this->bookmarks[$bookmark->getId()])) {
throw new BookmarkNotFoundException();
}
unset($this->bookmarks[$bookmark->getId()]);
if ($save === true) {
$this->save();
$this->history->deleteLink($bookmark);
}
}
/**
* @inheritDoc
*/
public function exists($id, $visibility = null)
{
if (! isset($this->bookmarks[$id])) {
return false;
}
if ($visibility === null) {
$visibility = $this->isLoggedIn ? 'all' : 'public';
}
$bookmark = $this->bookmarks[$id];
if (($bookmark->isPrivate() && $visibility != 'all' && $visibility != 'private')
|| (! $bookmark->isPrivate() && $visibility != 'all' && $visibility != 'public')
) {
return false;
}
return true;
}
/**
* @inheritDoc
*/
public function count($visibility = null)
{
return count($this->search([], $visibility));
}
/**
* @inheritDoc
*/
public function save()
{
if (!$this->isLoggedIn) {
// TODO: raise an Exception instead
die('You are not authorized to change the database.');
}
$this->bookmarks->reorder();
$this->bookmarksIO->write($this->bookmarks);
$this->pageCacheManager->invalidateCaches();
}
/**
* @inheritDoc
*/
public function bookmarksCountPerTag($filteringTags = [], $visibility = null)
{
$bookmarks = $this->search(['searchtags' => $filteringTags], $visibility);
$tags = [];
$caseMapping = [];
foreach ($bookmarks as $bookmark) {
foreach ($bookmark->getTags() as $tag) {
if (empty($tag)
|| (! $this->isLoggedIn && startsWith($tag, '.'))
|| $tag === BookmarkMarkdownFormatter::NO_MD_TAG
) {
continue;
}
// The first case found will be displayed.
if (!isset($caseMapping[strtolower($tag)])) {
$caseMapping[strtolower($tag)] = $tag;
$tags[$caseMapping[strtolower($tag)]] = 0;
}
$tags[$caseMapping[strtolower($tag)]]++;
}
}
/*
* Formerly used arsort(), which doesn't define the sort behaviour for equal values.
* Also, this function doesn't produce the same result between PHP 5.6 and 7.
*
* So we now use array_multisort() to sort tags by DESC occurrences,
* then ASC alphabetically for equal values.
*
* @see https://github.com/shaarli/Shaarli/issues/1142
*/
$keys = array_keys($tags);
$tmpTags = array_combine($keys, $keys);
array_multisort($tags, SORT_DESC, $tmpTags, SORT_ASC, $tags);
return $tags;
}
/**
* @inheritDoc
*/
public function days()
{
$bookmarkDays = [];
foreach ($this->search() as $bookmark) {
$bookmarkDays[$bookmark->getCreated()->format('Ymd')] = 0;
}
$bookmarkDays = array_keys($bookmarkDays);
sort($bookmarkDays);
return $bookmarkDays;
}
/**
* @inheritDoc
*/
public function filterDay($request)
{
return $this->bookmarkFilter->filter(BookmarkFilter::$FILTER_DAY, $request);
}
/**
* @inheritDoc
*/
public function initialize()
{
$initializer = new BookmarkInitializer($this);
$initializer->initialize();
}
/**
* Handles migration to the new database format (BookmarksArray).
*/
protected function migrate()
{
$bookmarkDb = new LegacyLinkDB(
$this->conf->get('resource.datastore'),
true,
false
);
$updater = new LegacyUpdater(
UpdaterUtils::read_updates_file($this->conf->get('resource.updates')),
$bookmarkDb,
$this->conf,
true
);
$newUpdates = $updater->update();
if (! empty($newUpdates)) {
UpdaterUtils::write_updates_file(
$this->conf->get('resource.updates'),
$updater->getDoneUpdates()
);
}
}
}