PodcastService::getFile() - Code Metrics - owncloud/music - Measure and Improve Code Quality continuously with Scrutinizer

PodcastService::getFile() A
last analyzed 2025-09-14 17:38 UTC

↳ Parent: PodcastService

Complexity

Conditions	2
Paths	2

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	4
nc	2
nop	2
dl	0
loc	6
rs	10
c	0
b	0
f	0

<?php declare(strict_types=1);

/**
 * ownCloud - Music app
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Pauli Järvinen <[email protected]>
 * @copyright Pauli Järvinen 2021 - 2025
 */

namespace OCA\Music\Service;

use OCA\Music\AppFramework\BusinessLayer\BusinessLayerException;
use OCA\Music\AppFramework\Core\Logger;
use OCA\Music\BusinessLayer\PodcastChannelBusinessLayer;
use OCA\Music\BusinessLayer\PodcastEpisodeBusinessLayer;
use OCA\Music\Db\PodcastChannel;
use OCA\Music\Db\PodcastEpisode;
use OCA\Music\Db\SortBy;
use OCA\Music\Utility\ArrayUtil;
use OCA\Music\Utility\FilesUtil;
use OCA\Music\Utility\HttpUtil;
use OCP\Files\File;
use OCP\Files\Folder;

class PodcastService {
	private PodcastChannelBusinessLayer $channelBusinessLayer;
	private PodcastEpisodeBusinessLayer $episodeBusinessLayer;
	private Logger $logger;

	public const STATUS_OK = 0;
	public const STATUS_INVALID_URL = 1;
	public const STATUS_INVALID_RSS = 2;
	public const STATUS_ALREADY_EXISTS = 3;
	public const STATUS_NOT_FOUND = 4;

	public function __construct(
			PodcastChannelBusinessLayer $channelBusinessLayer,
			PodcastEpisodeBusinessLayer $episodeBusinessLayer,
			Logger $logger) {
		$this->channelBusinessLayer = $channelBusinessLayer;
		$this->episodeBusinessLayer = $episodeBusinessLayer;
		$this->logger = $logger;
	}

	/**
	 * Get a specified podcast channel of a user
	 */
	public function getChannel(int $id, string $userId, bool $includeEpisodes) : ?PodcastChannel {
		try {
			$channel = $this->channelBusinessLayer->find($id, $userId);
			if ($includeEpisodes) {
				$channel->setEpisodes($this->episodeBusinessLayer->findAllByChannel($id, $userId));
			}
			return $channel;
		} catch (BusinessLayerException $ex) {
			$this->logger->warning("Requested channel $id not found: " . $ex->getMessage());
			return null;
		}
	}

	/**
	 * Get all podcast channels of a user
	 * @return PodcastChannel[]
	 */
	public function getAllChannels(string $userId, bool $includeEpisodes) : array {
		$channels = $this->channelBusinessLayer->findAll($userId, SortBy::Name);

		if ($includeEpisodes) {
			$this->injectEpisodes($channels, $userId, /*$allChannelsIncluded=*/ true);
		}

		return $channels;
	}

	/**
	 * Get a specified podcast episode of a user
	 */
	public function getEpisode(int $id, string $userId) : ?PodcastEpisode {
		try {
			return $this->episodeBusinessLayer->find($id, $userId);
		} catch (BusinessLayerException $ex) {
			$this->logger->warning("Requested episode $id not found: " . $ex->getMessage());
			return null;
		}
	}

	/**
	 * Get the latest added podcast episodes
	 * @return PodcastEpisode[]
	 */
	public function getLatestEpisodes(string $userId, int $maxCount) : array {
		return $this->episodeBusinessLayer->findAll($userId, SortBy::Newest, $maxCount);
	}

	/**
	 * Inject episodes to the given podcast channels
	 * @param PodcastChannel[] $channels input/output
	 * @param bool $allChannelsIncluded Set this to true if $channels contains all the podcasts of the user.
	 *									This helps in optimizing the DB query.
	 */
	public function injectEpisodes(array $channels, string $userId, bool $allChannelsIncluded) : void {
		if ($allChannelsIncluded || \count($channels) >= $this->channelBusinessLayer::MAX_SQL_ARGS) {
			$episodes = $this->episodeBusinessLayer->findAll($userId, SortBy::Newest);
		} else {
			$episodes = $this->episodeBusinessLayer->findAllByChannel(ArrayUtil::extractIds($channels), $userId);
		}

		$episodesPerChannel = ArrayUtil::groupBy($episodes, 'getChannelId');

		foreach ($channels as $channel) {
			$channel->setEpisodes($episodesPerChannel[$channel->getId()] ?? []);
		}
	}

	/**
	 * Add a followed podcast for a user from an RSS feed
	 * @return array{status: int, channel: ?PodcastChannel}
	 */
	public function subscribe(string $url, string $userId) : array {
		$content = HttpUtil::loadFromUrl($url)['content'];
		if ($content === false) {
			return ['status' => self::STATUS_INVALID_URL, 'channel' => null];
		}

		$xmlTree = \simplexml_load_string($content, \SimpleXMLElement::class, LIBXML_NOCDATA);
		if ($xmlTree === false || !$xmlTree->channel) {
			return ['status' => self::STATUS_INVALID_RSS, 'channel' => null];
		}

		try {
			$channel = $this->channelBusinessLayer->create($userId, $url, $content, $xmlTree->channel);
		} catch (\OCA\Music\AppFramework\Db\UniqueConstraintViolationException $ex) {
			return ['status' => self::STATUS_ALREADY_EXISTS, 'channel' => null];
		}

		$episodes = $this->updateEpisodesFromXml($xmlTree->channel->item, $userId, $channel->getId());
		$channel->setEpisodes($episodes);

		return ['status' => self::STATUS_OK, 'channel' => $channel];
	}

	/**
	 * Deletes a podcast channel from a user
	 * @return int status code
	 */
	public function unsubscribe(int $channelId, string $userId) : int {
		try {
			$this->channelBusinessLayer->delete($channelId, $userId); // throws if not found
			$this->episodeBusinessLayer->deleteByChannel($channelId, $userId); // does not throw
			return self::STATUS_OK;
		} catch (BusinessLayerException $ex) {
			$this->logger->warning("Channel $channelId to be unsubscribed not found: " . $ex->getMessage());
			return self::STATUS_NOT_FOUND;
		}
	}

	/**
	 * Check a single podcast channel for updates
	 * @param ?string $prevHash Previous content hash known by the client. If given, the result will tell
	 *							if the channel content has updated from this state. If omitted, the result
	 *							will tell if the channel changed from its previous server-known state.
	 * @param bool $force Value true will cause the channel to be parsed and updated to the database even
	 *					in case the RSS hasn't been changed at all since the previous update. This might be
	 *					useful during the development or if the previous update was unexpectedly aborted.
	 * @return array{status: int, updated: bool, channel: ?PodcastChannel}
	 */
	public function updateChannel(int $id, string $userId, ?string $prevHash = null, bool $force = false) : array {
		$updated = false;
		$status = self::STATUS_OK;

		try {
			$channel = $this->channelBusinessLayer->find($id, $userId);
		} catch (BusinessLayerException $ex) {
			$this->logger->warning("Channel $id to be updated not found: " . $ex->getMessage());
			$status = self::STATUS_NOT_FOUND;
			$channel = null;
		}

		if ($channel !== null) {
			$xmlTree = null;
			$content = HttpUtil::loadFromUrl($channel->getRssUrl())['content'];
			if ($content === false) {
				$status = self::STATUS_INVALID_URL;
			} else {
				$xmlTree = \simplexml_load_string($content, \SimpleXMLElement::class, LIBXML_NOCDATA);
			}

			if (!$xmlTree || !$xmlTree->channel) {
				$this->logger->warning("RSS feed for the channel {$channel->id} was invalid");
				$this->channelBusinessLayer->markUpdateChecked($channel);
				$status = self::STATUS_INVALID_RSS;
			} else if ($this->channelBusinessLayer->updateChannel($channel, $content, $xmlTree->channel, $force)) {
				// update the episodes too if channel content has actually changed or update is forced
				$episodes = $this->updateEpisodesFromXml($xmlTree->channel->item, $userId, $id);
				$channel->setEpisodes($episodes);
				$this->episodeBusinessLayer->deleteByChannelExcluding($id, ArrayUtil::extractIds($episodes), $userId);
				$updated = true;
			} else if ($prevHash !== null && $prevHash !== $channel->getContentHash()) {
				// the channel content is not new for the server but it is still new for the client
				$channel->setEpisodes($this->episodeBusinessLayer->findAllByChannel($id, $userId));
				$updated = true;
			}
		}

		return [
			'status' => $status,
			'updated' => $updated,
			'channel' => $channel
		];
	}

	/**
	 * Check updates for all channels of the user, one-by-one
	 * @return array{changed: int, unchanged: int, failed: int} where each int represent number of channels in that category
	 */
	public function updateAllChannels(
			string $userId, ?float $olderThan = null, bool $force = false, ?callable $progressCallback = null) : array {

		$result = ['changed' => 0, 'unchanged' => 0, 'failed' => 0];

		if ($olderThan === null) {
			$ids = $this->channelBusinessLayer->findAllIds($userId);
		} else {
			$ids = $this->channelBusinessLayer->findAllIdsNotUpdatedForHours($userId, $olderThan);
		}

		foreach ($ids as $id) {
			$channelResult = $this->updateChannel($id, $userId, null, $force);
			if ($channelResult['updated']) {
				$result['changed']++;
			} elseif ($channelResult['status'] === self::STATUS_OK) {
				$result['unchanged']++;
			} else {
				$result['failed']++;
			}

			if ($progressCallback !== null) {
				$progressCallback($channelResult);
			}
		}

		return $result;
	}

	/**
	 * Reset all the subscribed podcasts of the user
	 */
	public function resetAll(string $userId) : void {
		$this->episodeBusinessLayer->deleteAll($userId);
		$this->channelBusinessLayer->deleteAll($userId);
	}

	private function updateEpisodesFromXml(\SimpleXMLElement $items, string $userId, int $channelId) : array {
		$episodes = [];
		// loop the episodes from XML in reverse order to store them to the DB in chronological order
		for ($count = \count($items), $i = $count-1; $i >= 0; --$i) {
			if ($items[$i] !== null) {
				$episodes[] = $this->episodeBusinessLayer->addOrUpdate($userId, $channelId, $items[$i]);
			}
		}
		// return the episodes in inverted chronological order (newest first)
		return \array_reverse($episodes);
	}

	/**
	 * export all the podcast channels of a user to an OPML file
	 * @param string $userId user
	 * @param Folder $userFolder home dir of the user
	 * @param string $folderPath target parent folder path
	 * @param string $filename target file name
	 * @param string $collisionMode action to take on file name collision,
	 *								supported values:
	 *								- 'overwrite' The existing file will be overwritten
	 *								- 'keepboth' The new file is named with a suffix to make it unique
	 *								- 'abort' (default) The operation will fail
	 * @return string path of the written file
	 * @throws \OCP\Files\NotFoundException if the $folderPath is not a valid folder
	 * @throws \RuntimeException on name conflict if $collisionMode == 'abort'
	 * @throws \OCP\Files\NotPermittedException if the user is not allowed to write to the given folder
	 */
	public function exportToFile(
		string $userId, Folder $userFolder, string $folderPath, string $filename, string $collisionMode='abort') : string {
		$targetFolder = FilesUtil::getFolderFromRelativePath($userFolder, $folderPath);

		$filename = FilesUtil::sanitizeFileName($filename, ['opml']);

		$file = FilesUtil::createFile($targetFolder, $filename, $collisionMode);

		$channels = $this->channelBusinessLayer->findAll($userId, SortBy::Name);

		$content = self::channelsToOpml($channels);
		$file->putContent($content);

		return $userFolder->getRelativePath($file->getPath());
	}

	/**
	 * @param PodcastChannel[] $channels
	 */
	private static function channelsToOpml(array $channels) : string {
		$dom = new \DOMDocument('1.0', 'UTF-8');
		$dom->formatOutput = true;

		$rootElem = $dom->createElement('opml');
		$rootElem->setAttribute('version', '1.0');
		$dom->appendChild($rootElem);

		$headElem = $dom->createElement('head');
		$titleElem = $dom->createElement('title', 'Podcast channels from ownCloud/Nextcloud Music');
		$now = new \DateTime();
		$dateCreatedElem = $dom->createElement('dateCreated', $now->format(\DateTime::RFC822));
		$headElem->appendChild($titleElem);
		$headElem->appendChild($dateCreatedElem);
		$rootElem->appendChild($headElem);

		$bodyElem = $dom->createElement('body');
		foreach ($channels as $channel) {
			$outlineElem = $dom->createElement('outline');
			$outlineElem->setAttribute('type', 'rss');
			$outlineElem->setAttribute('text', $channel->getTitle());
			$outlineElem->setAttribute('title', $channel->getTitle());
			$outlineElem->setAttribute('xmlUrl', $channel->getRssUrl());
			$outlineElem->setAttribute('htmlUrl', $channel->getLinkUrl());
			$bodyElem->appendChild($outlineElem);
		}
		$rootElem->appendChild($bodyElem);

		return $dom->saveXML();
	}

	/**
	 * import podcast channels from an OPML file
	 * @param string $userId user
	 * @param Folder $userFolder user home dir
	 * @param string $filePath path of the file to import
	 * @return array with three keys:
	 * 			- 'channels': Array of PodcastChannel objects imported from the file
	 * 			- 'not_changed_count': An integer showing the number of channels in the file which were already subscribed by the user
	 * 			- 'failed_count': An integer showing the number of entries in the file which were not valid URLs
	 * @throws \OCP\Files\NotFoundException if the $filePath is not a valid file
	 * @throws \UnexpectedValueException if the $filePath points to a file of unsupported type
	 */
	public function importFromFile(string $userId, Folder $userFolder, string $filePath, ?callable $progressCallback = null) : array {
		$channelUrls = self::parseOpml($userFolder, $filePath);

		$channels = [];
		$existingCount = 0;
		$failedCount = 0;

		foreach ($channelUrls as $rssUrl) {
			$channelResult = $this->subscribe($rssUrl, $userId);
			if (!empty($channelResult['channel'])) {
				$channels[] = $channelResult['channel'];
			} else if ($channelResult['status'] == self::STATUS_ALREADY_EXISTS) {
				$existingCount++;
			} else {
				$failedCount++;
			}

			if ($progressCallback !== null) {
				$channelResult['rss'] = $rssUrl;
				$progressCallback($channelResult);
			}
		}

		return [
			'channels' => $channels,
			'not_changed_count' => $existingCount,
			'failed_count' => $failedCount
		];
	}

	/**
	 * @return string[] RSS URLs
	 */
	public static function parseOpml(Folder $userFolder, string $filePath) : array {
		$rssUrls = [];

		$file = self::getFile($userFolder, $filePath);
		$rootNode = \simplexml_load_string($file->getContent(), \SimpleXMLElement::class, LIBXML_NOCDATA);
		if ($rootNode === false) {
			throw new \UnexpectedValueException('the file is not in valid OPML format');
		}

		$rssNodes = $rootNode->xpath("/opml/body//outline[@type='rss']");

		foreach ($rssNodes as $node) {
			$rssUrls[] = (string)$node->attributes()['xmlUrl'];
		}

		return $rssUrls;
	}

	/**
	 * @throws \OCP\Files\NotFoundException if the $path does not point to a file under the $baseFolder
	 */
	private static function getFile(Folder $baseFolder, string $path) : File {
		$node = $baseFolder->get($path);
		if (!($node instanceof File)) {
			throw new \OCP\Files\NotFoundException();
		}
		return $node;
	}
}


1			<?php declare(strict_types=1);
2
3			/**
4			* ownCloud - Music app
5			*
6			* This file is licensed under the Affero General Public License version 3 or
7			* later. See the COPYING file.
8			*
9			* @author Pauli Järvinen <[email protected]>
10			* @copyright Pauli Järvinen 2021 - 2025
11			*/
12
13			namespace OCA\Music\Service;
14
15			use OCA\Music\AppFramework\BusinessLayer\BusinessLayerException;
16			use OCA\Music\AppFramework\Core\Logger;
17			use OCA\Music\BusinessLayer\PodcastChannelBusinessLayer;
18			use OCA\Music\BusinessLayer\PodcastEpisodeBusinessLayer;
19			use OCA\Music\Db\PodcastChannel;
20			use OCA\Music\Db\PodcastEpisode;
21			use OCA\Music\Db\SortBy;
22			use OCA\Music\Utility\ArrayUtil;
23			use OCA\Music\Utility\FilesUtil;
24			use OCA\Music\Utility\HttpUtil;
25			use OCP\Files\File;
26			use OCP\Files\Folder;
27
28			class PodcastService {
29			private PodcastChannelBusinessLayer $channelBusinessLayer;
30			private PodcastEpisodeBusinessLayer $episodeBusinessLayer;
31			private Logger $logger;
32
33			public const STATUS_OK = 0;
34			public const STATUS_INVALID_URL = 1;
35			public const STATUS_INVALID_RSS = 2;
36			public const STATUS_ALREADY_EXISTS = 3;
37			public const STATUS_NOT_FOUND = 4;
38
39			public function __construct(
40			PodcastChannelBusinessLayer $channelBusinessLayer,
41			PodcastEpisodeBusinessLayer $episodeBusinessLayer,
42			Logger $logger) {
43			$this->channelBusinessLayer = $channelBusinessLayer;
44			$this->episodeBusinessLayer = $episodeBusinessLayer;
45			$this->logger = $logger;
46			}
47
48			/**
49			* Get a specified podcast channel of a user
50			*/
51			public function getChannel(int $id, string $userId, bool $includeEpisodes) : ?PodcastChannel {
52			try {
53			$channel = $this->channelBusinessLayer->find($id, $userId);
54			if ($includeEpisodes) {
55			$channel->setEpisodes($this->episodeBusinessLayer->findAllByChannel($id, $userId));
56			}
57			return $channel;
58			} catch (BusinessLayerException $ex) {
59			$this->logger->warning("Requested channel $id not found: " . $ex->getMessage());
60			return null;
61			}
62			}
63
64			/**
65			* Get all podcast channels of a user
66			* @return PodcastChannel[]
67			*/
68			public function getAllChannels(string $userId, bool $includeEpisodes) : array {
69			$channels = $this->channelBusinessLayer->findAll($userId, SortBy::Name);
70
71			if ($includeEpisodes) {
72			$this->injectEpisodes($channels, $userId, /$allChannelsIncluded=/ true);
73			}
74
75			return $channels;
76			}
77
78			/**
79			* Get a specified podcast episode of a user
80			*/
81			public function getEpisode(int $id, string $userId) : ?PodcastEpisode {
82			try {
83			return $this->episodeBusinessLayer->find($id, $userId);
84			} catch (BusinessLayerException $ex) {
85			$this->logger->warning("Requested episode $id not found: " . $ex->getMessage());
86			return null;
87			}
88			}
89
90			/**
91			* Get the latest added podcast episodes
92			* @return PodcastEpisode[]
93			*/
94			public function getLatestEpisodes(string $userId, int $maxCount) : array {
95			return $this->episodeBusinessLayer->findAll($userId, SortBy::Newest, $maxCount);
96			}
97
98			/**
99			* Inject episodes to the given podcast channels
100			* @param PodcastChannel[] $channels input/output
101			* @param bool $allChannelsIncluded Set this to true if $channels contains all the podcasts of the user.
102			* This helps in optimizing the DB query.
103			*/
104			public function injectEpisodes(array $channels, string $userId, bool $allChannelsIncluded) : void {
105			if ($allChannelsIncluded \|\| \count($channels) >= $this->channelBusinessLayer::MAX_SQL_ARGS) {
106			$episodes = $this->episodeBusinessLayer->findAll($userId, SortBy::Newest);
107			} else {
108			$episodes = $this->episodeBusinessLayer->findAllByChannel(ArrayUtil::extractIds($channels), $userId);
109			}
110
111			$episodesPerChannel = ArrayUtil::groupBy($episodes, 'getChannelId');
112
113			foreach ($channels as $channel) {
114			$channel->setEpisodes($episodesPerChannel[$channel->getId()] ?? []);
115			}
116			}
117
118			/**
119			* Add a followed podcast for a user from an RSS feed
120			* @return array{status: int, channel: ?PodcastChannel}
121			*/
122			public function subscribe(string $url, string $userId) : array {
123			$content = HttpUtil::loadFromUrl($url)['content'];
124			if ($content === false) {
125			return ['status' => self::STATUS_INVALID_URL, 'channel' => null];
126			}
127
128			$xmlTree = \simplexml_load_string($content, \SimpleXMLElement::class, LIBXML_NOCDATA);
129			if ($xmlTree === false \|\| !$xmlTree->channel) {
130			return ['status' => self::STATUS_INVALID_RSS, 'channel' => null];
131			}
132
133			try {
134			$channel = $this->channelBusinessLayer->create($userId, $url, $content, $xmlTree->channel);
135			} catch (\OCA\Music\AppFramework\Db\UniqueConstraintViolationException $ex) {
136			return ['status' => self::STATUS_ALREADY_EXISTS, 'channel' => null];
137			}
138
139			$episodes = $this->updateEpisodesFromXml($xmlTree->channel->item, $userId, $channel->getId());
140			$channel->setEpisodes($episodes);
141
142			return ['status' => self::STATUS_OK, 'channel' => $channel];
143			}
144
145			/**
146			* Deletes a podcast channel from a user
147			* @return int status code
148			*/
149			public function unsubscribe(int $channelId, string $userId) : int {
150			try {
151			$this->channelBusinessLayer->delete($channelId, $userId); // throws if not found
152			$this->episodeBusinessLayer->deleteByChannel($channelId, $userId); // does not throw
153			return self::STATUS_OK;
154			} catch (BusinessLayerException $ex) {
155			$this->logger->warning("Channel $channelId to be unsubscribed not found: " . $ex->getMessage());
156			return self::STATUS_NOT_FOUND;
157			}
158			}
159
160			/**
161			* Check a single podcast channel for updates
162			* @param ?string $prevHash Previous content hash known by the client. If given, the result will tell
163			* if the channel content has updated from this state. If omitted, the result
164			* will tell if the channel changed from its previous server-known state.
165			* @param bool $force Value true will cause the channel to be parsed and updated to the database even
166			* in case the RSS hasn't been changed at all since the previous update. This might be
167			* useful during the development or if the previous update was unexpectedly aborted.
168			* @return array{status: int, updated: bool, channel: ?PodcastChannel}
169			*/
170			public function updateChannel(int $id, string $userId, ?string $prevHash = null, bool $force = false) : array {
171			$updated = false;
172			$status = self::STATUS_OK;
173
174			try {
175			$channel = $this->channelBusinessLayer->find($id, $userId);
176			} catch (BusinessLayerException $ex) {
177			$this->logger->warning("Channel $id to be updated not found: " . $ex->getMessage());
178			$status = self::STATUS_NOT_FOUND;
179			$channel = null;
180			}
181
182			if ($channel !== null) {
183			$xmlTree = null;
184			$content = HttpUtil::loadFromUrl($channel->getRssUrl())['content'];
185			if ($content === false) {
186			$status = self::STATUS_INVALID_URL;
187			} else {
188			$xmlTree = \simplexml_load_string($content, \SimpleXMLElement::class, LIBXML_NOCDATA);
189			}
190
191			if (!$xmlTree \|\| !$xmlTree->channel) {
192			$this->logger->warning("RSS feed for the channel {$channel->id} was invalid");
193			$this->channelBusinessLayer->markUpdateChecked($channel);
194			$status = self::STATUS_INVALID_RSS;
195			} else if ($this->channelBusinessLayer->updateChannel($channel, $content, $xmlTree->channel, $force)) {
196			// update the episodes too if channel content has actually changed or update is forced
197			$episodes = $this->updateEpisodesFromXml($xmlTree->channel->item, $userId, $id);
198			$channel->setEpisodes($episodes);
199			$this->episodeBusinessLayer->deleteByChannelExcluding($id, ArrayUtil::extractIds($episodes), $userId);
200			$updated = true;
201			} else if ($prevHash !== null && $prevHash !== $channel->getContentHash()) {
202			// the channel content is not new for the server but it is still new for the client
203			$channel->setEpisodes($this->episodeBusinessLayer->findAllByChannel($id, $userId));
204			$updated = true;
205			}
206			}
207
208			return [
209			'status' => $status,
210			'updated' => $updated,
211			'channel' => $channel
212			];
213			}
214
215			/**
216			* Check updates for all channels of the user, one-by-one
217			* @return array{changed: int, unchanged: int, failed: int} where each int represent number of channels in that category
218			*/
219			public function updateAllChannels(
220			string $userId, ?float $olderThan = null, bool $force = false, ?callable $progressCallback = null) : array {
221
222			$result = ['changed' => 0, 'unchanged' => 0, 'failed' => 0];
223
224			if ($olderThan === null) {
225			$ids = $this->channelBusinessLayer->findAllIds($userId);
226			} else {
227			$ids = $this->channelBusinessLayer->findAllIdsNotUpdatedForHours($userId, $olderThan);
228			}
229
230			foreach ($ids as $id) {
231			$channelResult = $this->updateChannel($id, $userId, null, $force);
232			if ($channelResult['updated']) {
233			$result['changed']++;
234			} elseif ($channelResult['status'] === self::STATUS_OK) {
235			$result['unchanged']++;
236			} else {
237			$result['failed']++;
238			}
239
240			if ($progressCallback !== null) {
241			$progressCallback($channelResult);
242			}
243			}
244
245			return $result;
246			}
247
248			/**
249			* Reset all the subscribed podcasts of the user
250			*/
251			public function resetAll(string $userId) : void {
252			$this->episodeBusinessLayer->deleteAll($userId);
253			$this->channelBusinessLayer->deleteAll($userId);
254			}
255
256			private function updateEpisodesFromXml(\SimpleXMLElement $items, string $userId, int $channelId) : array {
257			$episodes = [];
258			// loop the episodes from XML in reverse order to store them to the DB in chronological order
259			for ($count = \count($items), $i = $count-1; $i >= 0; --$i) {
260			if ($items[$i] !== null) {
261			$episodes[] = $this->episodeBusinessLayer->addOrUpdate($userId, $channelId, $items[$i]);
262			}
263			}
264			// return the episodes in inverted chronological order (newest first)
265			return \array_reverse($episodes);
266			}
267
268			/**
269			* export all the podcast channels of a user to an OPML file
270			* @param string $userId user
271			* @param Folder $userFolder home dir of the user
272			* @param string $folderPath target parent folder path
273			* @param string $filename target file name
274			* @param string $collisionMode action to take on file name collision,
275			* supported values:
276			* - 'overwrite' The existing file will be overwritten
277			* - 'keepboth' The new file is named with a suffix to make it unique
278			* - 'abort' (default) The operation will fail
279			* @return string path of the written file
280			* @throws \OCP\Files\NotFoundException if the $folderPath is not a valid folder
281			* @throws \RuntimeException on name conflict if $collisionMode == 'abort'
282			* @throws \OCP\Files\NotPermittedException if the user is not allowed to write to the given folder
283			*/
284			public function exportToFile(
285			string $userId, Folder $userFolder, string $folderPath, string $filename, string $collisionMode='abort') : string {
286			$targetFolder = FilesUtil::getFolderFromRelativePath($userFolder, $folderPath);
287
288			$filename = FilesUtil::sanitizeFileName($filename, ['opml']);
289
290			$file = FilesUtil::createFile($targetFolder, $filename, $collisionMode);
291
292			$channels = $this->channelBusinessLayer->findAll($userId, SortBy::Name);
293
294			$content = self::channelsToOpml($channels);
295			$file->putContent($content);
296
297			return $userFolder->getRelativePath($file->getPath());
298			}
299
300			/**
301			* @param PodcastChannel[] $channels
302			*/
303			private static function channelsToOpml(array $channels) : string {
304			$dom = new \DOMDocument('1.0', 'UTF-8');
305			$dom->formatOutput = true;
306
307			$rootElem = $dom->createElement('opml');
308			$rootElem->setAttribute('version', '1.0');
309			$dom->appendChild($rootElem);
310
311			$headElem = $dom->createElement('head');
312			$titleElem = $dom->createElement('title', 'Podcast channels from ownCloud/Nextcloud Music');
313			$now = new \DateTime();
314			$dateCreatedElem = $dom->createElement('dateCreated', $now->format(\DateTime::RFC822));
315			$headElem->appendChild($titleElem);
316			$headElem->appendChild($dateCreatedElem);
317			$rootElem->appendChild($headElem);
318
319			$bodyElem = $dom->createElement('body');
320			foreach ($channels as $channel) {
321			$outlineElem = $dom->createElement('outline');
322			$outlineElem->setAttribute('type', 'rss');
323			$outlineElem->setAttribute('text', $channel->getTitle());
324			$outlineElem->setAttribute('title', $channel->getTitle());
325			$outlineElem->setAttribute('xmlUrl', $channel->getRssUrl());
326			$outlineElem->setAttribute('htmlUrl', $channel->getLinkUrl());
327			$bodyElem->appendChild($outlineElem);
328			}
329			$rootElem->appendChild($bodyElem);
330
331			return $dom->saveXML();
332			}
333
334			/**
335			* import podcast channels from an OPML file
336			* @param string $userId user
337			* @param Folder $userFolder user home dir
338			* @param string $filePath path of the file to import
339			* @return array with three keys:
340			* - 'channels': Array of PodcastChannel objects imported from the file
341			* - 'not_changed_count': An integer showing the number of channels in the file which were already subscribed by the user
342			* - 'failed_count': An integer showing the number of entries in the file which were not valid URLs
343			* @throws \OCP\Files\NotFoundException if the $filePath is not a valid file
344			* @throws \UnexpectedValueException if the $filePath points to a file of unsupported type
345			*/
346			public function importFromFile(string $userId, Folder $userFolder, string $filePath, ?callable $progressCallback = null) : array {
347			$channelUrls = self::parseOpml($userFolder, $filePath);
348
349			$channels = [];
350			$existingCount = 0;
351			$failedCount = 0;
352
353			foreach ($channelUrls as $rssUrl) {
354			$channelResult = $this->subscribe($rssUrl, $userId);
355			if (!empty($channelResult['channel'])) {
356			$channels[] = $channelResult['channel'];
357			} else if ($channelResult['status'] == self::STATUS_ALREADY_EXISTS) {
358			$existingCount++;
359			} else {
360			$failedCount++;
361			}
362
363			if ($progressCallback !== null) {
364			$channelResult['rss'] = $rssUrl;
365			$progressCallback($channelResult);
366			}
367			}
368
369			return [
370			'channels' => $channels,
371			'not_changed_count' => $existingCount,
372			'failed_count' => $failedCount
373			];
374			}
375
376			/**
377			* @return string[] RSS URLs
378			*/
379			public static function parseOpml(Folder $userFolder, string $filePath) : array {
380			$rssUrls = [];
381
382			$file = self::getFile($userFolder, $filePath);
383			$rootNode = \simplexml_load_string($file->getContent(), \SimpleXMLElement::class, LIBXML_NOCDATA);
384			if ($rootNode === false) {
385			throw new \UnexpectedValueException('the file is not in valid OPML format');
386			}
387
388			$rssNodes = $rootNode->xpath("/opml/body//outline[@type='rss']");
389
390			foreach ($rssNodes as $node) {
391			$rssUrls[] = (string)$node->attributes()['xmlUrl'];
392			}
393
394			return $rssUrls;
395			}
396
397			/**
398			* @throws \OCP\Files\NotFoundException if the $path does not point to a file under the $baseFolder
399			*/
400			private static function getFile(Folder $baseFolder, string $path) : File {
401			$node = $baseFolder->get($path);
402			if (!($node instanceof File)) {
403			throw new \OCP\Files\NotFoundException();
404			}
405			return $node;
406			}
407			}
408

owncloud / music

PodcastService::getFile() A last analyzed 2025-09-14 17:38 UTC

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PodcastService::getFile() A
last analyzed 2025-09-14 17:38 UTC