NotesService::delete() - Code Metrics - Inspection of "handle insufficient storage on web frontend" - nextcloud/notes - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( b762ba...10d0d6 )

by korelstar

created 2020-02-01 16:47 UTC

NotesService::delete() A

↳ Parent: NotesService

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	5
c	1
b	0
f	0
dl	0
loc	6
rs	10
cc	1
nc	1
nop	2

<?php

namespace OCA\Notes\Service;

use OCP\Encryption\Exceptions\GenericEncryptionException;
use OCP\Files\File;
use OCP\Files\FileInfo;
use OCP\Files\Folder;
use OCP\Files\IRootFolder;
use OCP\IConfig;
use OCP\IL10N;
use OCP\ILogger;
use OCP\ITagManager;

use OCA\Notes\Db\Note;
use OCA\Notes\Service\SettingsService;

/**
 * Class NotesService
 *
 * @package OCA\Notes\Service
 */
class NotesService {

	private $l10n;
	private $root;
	private $logger;
	private $config;
	private $tags;
	private $settings;
	private $noteUtil;
	private $appName;

	/**
	 * @param IRootFolder $root
	 * @param IL10N $l10n
	 * @param ILogger $logger
	 * @param IConfig $config
	 * @param ITagManager $tagManager
	 * @param SettingsService $settings
	 * @param NoteUtil $noteUtil
	 * @param String $appName
	 */
	public function __construct(
		IRootFolder $root,
		IL10N $l10n,
		ILogger $logger,
		IConfig $config,
		ITagManager $tagManager,
		SettingsService $settings,
		NoteUtil $noteUtil,
		$appName
	) {
		$this->root = $root;
		$this->l10n = $l10n;
		$this->logger = $logger;
		$this->config = $config;
		$this->tags = $tagManager->load('files');
		$this->settings = $settings;
		$this->noteUtil = $noteUtil;
		$this->appName = $appName;
	}


	/**
	 * @param string $userId
	 * @return array with all notes in the current directory
	 */
	public function getAll($userId, $onlyMeta = false) {
		$notesFolder = $this->getFolderForUser($userId);
		$notes = $this->noteUtil->gatherNoteFiles($notesFolder);
		$filesById = [];
		foreach ($notes as $note) {
			$filesById[$note->getId()] = $note;
		}
		$tags = $this->tags->getTagsForObjects(array_keys($filesById));

		$notes = [];
		foreach ($filesById as $id => $file) {
			$noteTags = is_array($tags) && array_key_exists($id, $tags) ? $tags[$id] : [];
			$notes[] = $this->getNote($file, $notesFolder, $noteTags, $onlyMeta);
		}

		return $notes;
	}


	/**
	 * Used to get a single note by id
	 * @param int $id the id of the note to get
	 * @param string $userId
	 * @throws NoteDoesNotExistException if note does not exist
	 * @return Note
	 */
	public function get($id, $userId, $onlyMeta = false) : Note {
		$folder = $this->getFolderForUser($userId);
		return $this->getNote($this->getFileById($folder, $id), $folder, $this->getTags($id), $onlyMeta);
	}

	private function getTags($id) {
		$tags = $this->tags->getTagsForObjects([$id]);
		return is_array($tags) && array_key_exists($id, $tags) ? $tags[$id] : [];
	}

	private function getNote(File $file, Folder $notesFolder, $tags = [], $onlyMeta = false) : Note {
		$id = $file->getId();
		try {
			$note = Note::fromFile($file, $notesFolder, $tags, $onlyMeta);
		} catch (GenericEncryptionException $e) {
			$message = $this->l10n->t('Encryption Error').': ('.$file->getName().') '.$e->getMessage();
			$note = Note::fromException($message, $file, $notesFolder, array_key_exists($id, $tags) ? $tags[$id] : []);
		} catch (\Exception $e) {
			$message = $this->l10n->t('Error').': ('.$file->getName().') '.$e->getMessage();
			$note = Note::fromException($message, $file, $notesFolder, array_key_exists($id, $tags) ? $tags[$id] : []);
		}
		return $note;
	}


	/**
	 * Creates a note and returns the empty note
	 * @param string $userId
	 * @see update for setting note content
	 * @return Note the newly created note
	 */
	public function create($userId) : Note {
		$title = $this->l10n->t('New note');
		$folder = $this->getFolderForUser($userId);
		if ($folder->getFreeSpace() <= 1) {
			throw new InsufficientStorageException();
		}

		// check new note exists already and we need to number it
		// pass -1 because no file has id -1 and that will ensure
		// to only return filenames that dont yet exist
		$path = $this->noteUtil->generateFileName($folder, $title, $this->settings->get($userId, 'fileSuffix'), -1);
		$file = $folder->newFile($path);

		// try to write some content
		try {
			// If server-side encryption is activated, the server creates an empty file without signature
			// which leads to an GenericEncryptionException('Missing Signature') afterwards.
			// Saving a space-char (and removing it later) is a working work-around.
			$file->putContent(' ');
		} catch (\Throwable $e) {
			// if writing the content fails, we have to roll back the note creation
			$this->delete($file->getId(), $userId);
			throw $e;
		}

		return $this->getNote($file, $folder);
	}


	/**
	 * Updates a note. Be sure to check the returned note since the title is
	 * dynamically generated and filename conflicts are resolved
	 * @param int $id the id of the note used to update
	 * @param string|null $content the content which will be written into the note
	 * the title is generated from the first line of the content
	 * @param string|null $category the category in which the note should be saved
	 * @param int $mtime time of the note modification (optional)
	 * @throws NoteDoesNotExistException if note does not exist
	 * @return \OCA\Notes\Db\Note the updated note
	 */
	public function update($id, $content, $userId, $category = null, $mtime = 0) : Note {
		$notesFolder = $this->getFolderForUser($userId);
		$file = $this->getFileById($notesFolder, $id);
		$title = $this->noteUtil->getSafeTitleFromContent($content===null ? $file->getContent() : $content);

		// rename/move file with respect to title/category
		// this can fail if access rights are not sufficient or category name is illegal
		try {
			$this->noteUtil->moveNote($notesFolder, $file, $category, $title);
		} catch (\OCP\Files\NotPermittedException $e) {
			$err = 'Moving note '.$id.' ('.$title.') to the desired target is not allowed.'
				.' Please check the note\'s target category ('.$category.').';
			$this->logger->error($err, ['app' => $this->appName]);
		} catch (\Exception $e) {
			$err = 'Moving note '.$id.' ('.$title.') to the desired target has failed '
				.'with a '.get_class($e).': '.$e->getMessage();
			$this->logger->error($err, ['app' => $this->appName]);
		}

		if ($content !== null) {
			if ($file->getParent()->getFreeSpace() < strlen($content)) {
				throw new InsufficientStorageException();
			}
			$file->putContent($content);
		}

		if ($mtime) {
			$file->touch($mtime);
		}

		return $this->getNote($file, $notesFolder, $this->getTags($id));
	}

	/**
	 * Set or unset a note as favorite.
	 * @param int $id the id of the note used to update
	 * @param boolean $favorite whether the note should be a favorite or not
	 * @throws NoteDoesNotExistException if note does not exist
	 * @return boolean the new favorite state of the note
	 */
	public function favorite($id, $favorite, $userId) {
		$note = $this->get($id, $userId, true);
		if ($favorite !== $note->getFavorite()) {
			if ($favorite) {
				$this->tags->addToFavorites($id);
			} else {
				$this->tags->removeFromFavorites($id);
			}
			$note = $this->get($id, $userId, true);
		}
		return $note->getFavorite();
	}


	/**
	 * Deletes a note
	 * @param int $id the id of the note which should be deleted
	 * @param string $userId
	 * @throws NoteDoesNotExistException if note does not
	 * exist
	 */
	public function delete($id, $userId) {
		$notesFolder = $this->getFolderForUser($userId);
		$file = $this->getFileById($notesFolder, $id);
		$parent = $file->getParent();
		$file->delete();
		$this->noteUtil->deleteEmptyFolder($notesFolder, $parent);
	}

	/**
	 * @param Folder $folder
	 * @param int $id
	 * @throws NoteDoesNotExistException
	 * @return \OCP\Files\File
	 */
	private function getFileById(Folder $folder, $id) : File {
		$file = $folder->getById($id);

		if (count($file) <= 0 || !($file[0] instanceof File) || !$this->noteUtil->isNote($file[0])) {
			throw new NoteDoesNotExistException();
		}
		return $file[0];
	}

	/**
	 * @param string $userId the user id
	 * @return boolean true if folder is accessible, or Exception otherwise
	 */
	public function checkNotesFolder($userId) {
		$this->getFolderForUser($userId);
		return true;
	}

	/**
	 * @param string $userId the user id
	 * @return Folder
	 */
	private function getFolderForUser($userId) : Folder {
		// TODO use IRootFolder->getUserFolder()  ?
		$path = '/' . $userId . '/files/' . $this->settings->get($userId, 'notesPath');
		try {
			$folder = $this->noteUtil->getOrCreateFolder($path);
		} catch (\Exception $e) {
			throw new NotesFolderException($path);
		}
		return $folder;
	}
}


1			<?php
2
3			namespace OCA\Notes\Service;
4
5			use OCP\Encryption\Exceptions\GenericEncryptionException;
6			use OCP\Files\File;
7			use OCP\Files\FileInfo;
8			use OCP\Files\Folder;
9			use OCP\Files\IRootFolder;
10			use OCP\IConfig;
11			use OCP\IL10N;
12			use OCP\ILogger;
13			use OCP\ITagManager;
14
15			use OCA\Notes\Db\Note;
16			use OCA\Notes\Service\SettingsService;
17
18			/**
19			* Class NotesService
20			*
21			* @package OCA\Notes\Service
22			*/
23			class NotesService {
24
25			private $l10n;
26			private $root;
27			private $logger;
28			private $config;
29			private $tags;
30			private $settings;
31			private $noteUtil;
32			private $appName;
33
34			/**
35			* @param IRootFolder $root
36			* @param IL10N $l10n
37			* @param ILogger $logger
38			* @param IConfig $config
39			* @param ITagManager $tagManager
40			* @param SettingsService $settings
41			* @param NoteUtil $noteUtil
42			* @param String $appName
43			*/
44			public function __construct(
45			IRootFolder $root,
46			IL10N $l10n,
47			ILogger $logger,
48			IConfig $config,
49			ITagManager $tagManager,
50			SettingsService $settings,
51			NoteUtil $noteUtil,
52			$appName
53			) {
54			$this->root = $root;
55			$this->l10n = $l10n;
56			$this->logger = $logger;
57			$this->config = $config;
58			$this->tags = $tagManager->load('files');
59			$this->settings = $settings;
60			$this->noteUtil = $noteUtil;
61			$this->appName = $appName;
62			}
63
64
65			/**
66			* @param string $userId
67			* @return array with all notes in the current directory
68			*/
69			public function getAll($userId, $onlyMeta = false) {
70			$notesFolder = $this->getFolderForUser($userId);
71			$notes = $this->noteUtil->gatherNoteFiles($notesFolder);
72			$filesById = [];
73			foreach ($notes as $note) {
74			$filesById[$note->getId()] = $note;
75			}
76			$tags = $this->tags->getTagsForObjects(array_keys($filesById));
77
78			$notes = [];
79			foreach ($filesById as $id => $file) {
80			$noteTags = is_array($tags) && array_key_exists($id, $tags) ? $tags[$id] : [];
81			$notes[] = $this->getNote($file, $notesFolder, $noteTags, $onlyMeta);
82			}
83
84			return $notes;
85			}
86
87
88			/**
89			* Used to get a single note by id
90			* @param int $id the id of the note to get
91			* @param string $userId
92			* @throws NoteDoesNotExistException if note does not exist
93			* @return Note
94			*/
95			public function get($id, $userId, $onlyMeta = false) : Note {
96			$folder = $this->getFolderForUser($userId);
97			return $this->getNote($this->getFileById($folder, $id), $folder, $this->getTags($id), $onlyMeta);
98			}
99
100			private function getTags($id) {
101			$tags = $this->tags->getTagsForObjects([$id]);
102			return is_array($tags) && array_key_exists($id, $tags) ? $tags[$id] : [];
103			}
104
105			private function getNote(File $file, Folder $notesFolder, $tags = [], $onlyMeta = false) : Note {
106			$id = $file->getId();
107			try {
108			$note = Note::fromFile($file, $notesFolder, $tags, $onlyMeta);
109			} catch (GenericEncryptionException $e) {
110			$message = $this->l10n->t('Encryption Error').': ('.$file->getName().') '.$e->getMessage();
111			$note = Note::fromException($message, $file, $notesFolder, array_key_exists($id, $tags) ? $tags[$id] : []);
112			} catch (\Exception $e) {
113			$message = $this->l10n->t('Error').': ('.$file->getName().') '.$e->getMessage();
114			$note = Note::fromException($message, $file, $notesFolder, array_key_exists($id, $tags) ? $tags[$id] : []);
115			}
116			return $note;
117			}
118
119
120			/**
121			* Creates a note and returns the empty note
122			* @param string $userId
123			* @see update for setting note content
124			* @return Note the newly created note
125			*/
126			public function create($userId) : Note {
127			$title = $this->l10n->t('New note');
128			$folder = $this->getFolderForUser($userId);
129			if ($folder->getFreeSpace() <= 1) {
130			throw new InsufficientStorageException();
131			}
132
133			// check new note exists already and we need to number it
134			// pass -1 because no file has id -1 and that will ensure
135			// to only return filenames that dont yet exist
136			$path = $this->noteUtil->generateFileName($folder, $title, $this->settings->get($userId, 'fileSuffix'), -1);
137			$file = $folder->newFile($path);
138
139			// try to write some content
140			try {
141			// If server-side encryption is activated, the server creates an empty file without signature
142			// which leads to an GenericEncryptionException('Missing Signature') afterwards.
143			// Saving a space-char (and removing it later) is a working work-around.
144			$file->putContent(' ');
145			} catch (\Throwable $e) {
146			// if writing the content fails, we have to roll back the note creation
147			$this->delete($file->getId(), $userId);
148			throw $e;
149			}
150
151			return $this->getNote($file, $folder);
152			}
153
154
155			/**
156			* Updates a note. Be sure to check the returned note since the title is
157			* dynamically generated and filename conflicts are resolved
158			* @param int $id the id of the note used to update
159			* @param string\|null $content the content which will be written into the note
160			* the title is generated from the first line of the content
161			* @param string\|null $category the category in which the note should be saved
162			* @param int $mtime time of the note modification (optional)
163			* @throws NoteDoesNotExistException if note does not exist
164			* @return \OCA\Notes\Db\Note the updated note
165			*/
166			public function update($id, $content, $userId, $category = null, $mtime = 0) : Note {
167			$notesFolder = $this->getFolderForUser($userId);
168			$file = $this->getFileById($notesFolder, $id);
169			$title = $this->noteUtil->getSafeTitleFromContent($content===null ? $file->getContent() : $content);
170
171			// rename/move file with respect to title/category
172			// this can fail if access rights are not sufficient or category name is illegal
173			try {
174			$this->noteUtil->moveNote($notesFolder, $file, $category, $title);
175			} catch (\OCP\Files\NotPermittedException $e) {
176			$err = 'Moving note '.$id.' ('.$title.') to the desired target is not allowed.'
177			.' Please check the note\'s target category ('.$category.').';
178			$this->logger->error($err, ['app' => $this->appName]);
179			} catch (\Exception $e) {
180			$err = 'Moving note '.$id.' ('.$title.') to the desired target has failed '
181			.'with a '.get_class($e).': '.$e->getMessage();
182			$this->logger->error($err, ['app' => $this->appName]);
183			}
184
185			if ($content !== null) {
186			if ($file->getParent()->getFreeSpace() < strlen($content)) {
187			throw new InsufficientStorageException();
188			}
189			$file->putContent($content);
190			}
191
192			if ($mtime) {
193			$file->touch($mtime);
194			}
195
196			return $this->getNote($file, $notesFolder, $this->getTags($id));
197			}
198
199			/**
200			* Set or unset a note as favorite.
201			* @param int $id the id of the note used to update
202			* @param boolean $favorite whether the note should be a favorite or not
203			* @throws NoteDoesNotExistException if note does not exist
204			* @return boolean the new favorite state of the note
205			*/
206			public function favorite($id, $favorite, $userId) {
207			$note = $this->get($id, $userId, true);
208			if ($favorite !== $note->getFavorite()) {
209			if ($favorite) {
210			$this->tags->addToFavorites($id);
211			} else {
212			$this->tags->removeFromFavorites($id);
213			}
214			$note = $this->get($id, $userId, true);
215			}
216			return $note->getFavorite();
217			}
218
219
220			/**
221			* Deletes a note
222			* @param int $id the id of the note which should be deleted
223			* @param string $userId
224			* @throws NoteDoesNotExistException if note does not
225			* exist
226			*/
227			public function delete($id, $userId) {
228			$notesFolder = $this->getFolderForUser($userId);
229			$file = $this->getFileById($notesFolder, $id);
230			$parent = $file->getParent();
231			$file->delete();
232			$this->noteUtil->deleteEmptyFolder($notesFolder, $parent);
233			}
234
235			/**
236			* @param Folder $folder
237			* @param int $id
238			* @throws NoteDoesNotExistException
239			* @return \OCP\Files\File
240			*/
241			private function getFileById(Folder $folder, $id) : File {
242			$file = $folder->getById($id);
243
244			if (count($file) <= 0 \|\| !($file[0] instanceof File) \|\| !$this->noteUtil->isNote($file[0])) {
245			throw new NoteDoesNotExistException();
246			}
247			return $file[0];
248			}
249
250			/**
251			* @param string $userId the user id
252			* @return boolean true if folder is accessible, or Exception otherwise
253			*/
254			public function checkNotesFolder($userId) {
255			$this->getFolderForUser($userId);
256			return true;
257			}
258
259			/**
260			* @param string $userId the user id
261			* @return Folder
262			*/
263			private function getFolderForUser($userId) : Folder {
264			// TODO use IRootFolder->getUserFolder() ?
265			$path = '/' . $userId . '/files/' . $this->settings->get($userId, 'notesPath');
266			try {
267			$folder = $this->noteUtil->getOrCreateFolder($path);
268			} catch (\Exception $e) {
269			throw new NotesFolderException($path);
270			}
271			return $folder;
272			}
273			}
274

nextcloud / notes

Push — master ( b762ba...10d0d6 )

NotesService::delete() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

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