feat(invitations): Allow importing CSV email lists

Signed-off-by: Joas Schilling <coding@schilljs.com>

appinfo/routes/routesRoomController.php

@@ -115,5 +115,7 @@
 		['name' => 'Room#archiveConversation', 'url' => '/api/{apiVersion}/room/{token}/archive', 'verb' => 'POST', 'requirements' => $requirementsWithToken],
 		/** @see \OCA\Talk\Controller\RoomController::unarchiveConversation() */
 		['name' => 'Room#unarchiveConversation', 'url' => '/api/{apiVersion}/room/{token}/archive', 'verb' => 'DELETE', 'requirements' => $requirementsWithToken],
+		/** @see \OCA\Talk\Controller\RoomController::importEmailsAsParticipants() */
+		['name' => 'Room#importEmailsAsParticipants', 'url' => '/api/{apiVersion}/room/{token}/import-emails', 'verb' => 'POST', 'requirements' => $requirementsWithToken],
 	],
 ];

docs/capabilities.md

@@ -161,6 +161,7 @@
 * `talk-polls-drafts` - Whether moderators can store and retrieve poll drafts
 * `download-call-participants` - Whether the endpoints for moderators to download the call participants is available
 * `chat-summary-api` (local) - Whether the endpoint to get summarized chat messages in a conversation is available
+* `email-csv-import` - Whether the endpoint to import a CSV email list as participants exists
 * `config => chat => summary-threshold` (local) - Number of unread messages that should exist to show a "Generate summary" option
 * `config => call => start-without-media` (local) - Boolean, whether media should be disabled when starting or joining a conversation
 * `config => call => max-duration` - Integer, maximum call duration in seconds. Please note that this should only be used with system cron and with a reasonable high value, due to the expended duration until the background job ran.

lib/Capabilities.php

@@ -108,6 +108,7 @@ class Capabilities implements IPublicCapability {
 		'archived-conversations-v2',
 		'talk-polls-drafts',
 		'download-call-participants',
+		'email-csv-import',
 	];
 
 	public const CONDITIONAL_FEATURES = [

lib/Controller/RoomController.php

@@ -14,6 +14,7 @@
 use OCA\Talk\Events\BeforeRoomsFetchEvent;
 use OCA\Talk\Exceptions\CannotReachRemoteException;
 use OCA\Talk\Exceptions\ForbiddenException;
+use OCA\Talk\Exceptions\GuestImportException;
 use OCA\Talk\Exceptions\InvalidPasswordException;
 use OCA\Talk\Exceptions\ParticipantNotFoundException;
 use OCA\Talk\Exceptions\RoomNotFoundException;
@@ -73,6 +74,7 @@
 use OCP\IConfig;
 use OCP\IGroup;
 use OCP\IGroupManager;
+use OCP\IL10N;
 use OCP\IPhoneNumberUtil;
 use OCP\IRequest;
 use OCP\IUser;
@@ -121,6 +123,7 @@ public function __construct(
 		protected Capabilities $capabilities,
 		protected FederationManager $federationManager,
 		protected BanService $banService,
+		protected IL10N $l,
 	) {
 		parent::__construct($appName, $request);
 	}
@@ -1204,7 +1207,7 @@ public function addParticipantToRoom(string $newParticipant, string $source = 'u
 			} catch (TypeException) {
 			}
 
-			$email = $newParticipant;
+			$email = strtolower($newParticipant);
 			$actorId = hash('sha256', $email);
 			try {
 				$this->participantService->getParticipantByActor($this->room, Attendee::ACTOR_EMAILS, $actorId);
@@ -2424,6 +2427,48 @@ public function setMessageExpiration(int $seconds): DataResponse {
 		return new DataResponse();
 	}
 
+	/**
+	 * Import a list of email attendees
+	 *
+	 * Content format is comma separated values:
+	 * - Header line is required and must match `"email","name"` or `"email"`
+	 * - one entry per line
+	 *
+	 * Required capability: `email-csv-import`
+	 *
+	 * @param bool $testRun When set to true, the file is validated and no email is actually sent nor any participant added to the conversation
+	 * @return DataResponse<Http::STATUS_OK, array{invites: non-negative-int, duplicates: non-negative-int, invalid?: non-negative-int, invalidLines?: list<non-negative-int>, type?: int<-1, 6>}, array{}>|DataResponse<Http::STATUS_BAD_REQUEST, array{error: 'room'|'file'|'header-email'|'header-name'|'rows', message?: string, invites?: non-negative-int, duplicates?: non-negative-int, invalid?: non-negative-int, invalidLines?: list<non-negative-int>, type?: int<-1, 6>}, array{}>
+	 *
+	 * 200: All entries imported successfully
+	 * 400: Import was not successful. When message is provided the string is in user language and should be displayed as an error.
+	 */
+	#[NoAdminRequired]
+	#[RequireModeratorParticipant]
+	public function importEmailsAsParticipants(bool $testRun = false): DataResponse {
+		$file = $this->request->getUploadedFile('file');
+		if ($file === null) {
+			return new DataResponse([
+				'error' => 'file',
+				'message' => $this->l->t('Uploading the file failed'),
+			], Http::STATUS_BAD_REQUEST);
+		}
+		if ($file['error'] !== 0) {
+			$this->logger->error('Uploading email CSV file failed with error: ' . $file['error']);
+			return new DataResponse([
+				'error' => 'file',
+				'message' => $this->l->t('Uploading the file failed'),
+			], Http::STATUS_BAD_REQUEST);
+		}
+
+		try {
+			$data = $this->guestManager->importEmails($this->room, $file, $testRun);
+			return new DataResponse($data);
+		} catch (GuestImportException $e) {
+			return new DataResponse($e->getData(), Http::STATUS_BAD_REQUEST);
+		}
+
+	}
+
 	/**
 	 * Get capabilities for a room
 	 *

lib/Exceptions/GuestImportException.php

@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+
+namespace OCA\Talk\Exceptions;
+
+class GuestImportException extends \Exception {
+	public const REASON_ROOM = 'room';
+	public const REASON_ROWS = 'rows';
+	public const REASON_HEADER_EMAIL = 'header-email';
+	public const REASON_HEADER_NAME = 'header-name';
+
+	/**
+	 * @param self::REASON_* $reason
+	 * @param list<non-negative-int>|null $invalidLines
+	 * @param non-negative-int|null $invites
+	 * @param non-negative-int|null $duplicates
+	 */
+	public function __construct(
+		protected readonly string $reason,
+		protected readonly ?string $errorMessage = null,
+		protected readonly ?array $invalidLines = null,
+		protected readonly ?int $invites = null,
+		protected readonly ?int $duplicates = null,
+	) {
+		parent::__construct();
+	}
+
+	/**
+	 * @return self::REASON_*
+	 */
+	public function getReason(): string {
+		return $this->reason;
+	}
+
+	public function getErrorMessage(): ?string {
+		return $this->errorMessage;
+	}
+
+	/**
+	 * @return non-negative-int|null
+	 */
+	public function getInvites(): ?int {
+		return $this->invites;
+	}
+
+	/**
+	 * @return non-negative-int|null
+	 */
+	public function getDuplicates(): ?int {
+		return $this->duplicates;
+	}
+
+	/**
+	 * @return non-negative-int|null
+	 */
+	public function getInvalid(): ?int {
+		return $this->invalidLines === null ? null : count($this->invalidLines);
+	}
+
+	/**
+	 * @return list<non-negative-int>|null
+	 */
+	public function getInvalidLines(): ?array {
+		return $this->invalidLines;
+	}
+
+	public function getData(): array {
+		$data = ['error' => $this->errorMessage];
+		if ($this->errorMessage !== null) {
+			$data['message'] = $this->errorMessage;
+		}
+		if ($this->invites !== null) {
+			$data['invites'] = $this->invites;
+		}
+		if ($this->duplicates !== null) {
+			$data['duplicates'] = $this->duplicates;
+		}
+		if ($this->invalidLines !== null) {
+			$data['invalid'] = count($this->invalidLines);
+			$data['invalidLines'] = $this->invalidLines;
+		}
+
+		return $data;
+	}
+}

lib/GuestManager.php

@@ -13,9 +13,13 @@
 use OCA\Talk\Events\BeforeParticipantModifiedEvent;
 use OCA\Talk\Events\EmailInvitationSentEvent;
 use OCA\Talk\Events\ParticipantModifiedEvent;
+use OCA\Talk\Exceptions\GuestImportException;
+use OCA\Talk\Exceptions\RoomProperty\TypeException;
 use OCA\Talk\Model\Attendee;
+use OCA\Talk\Model\BreakoutRoom;
 use OCA\Talk\Service\ParticipantService;
 use OCA\Talk\Service\PollService;
+use OCA\Talk\Service\RoomService;
 use OCP\Defaults;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\IL10N;
@@ -24,6 +28,7 @@
 use OCP\IUserSession;
 use OCP\Mail\IMailer;
 use OCP\Util;
+use Psr\Log\LoggerInterface;
 
 class GuestManager {
 	public function __construct(
@@ -33,9 +38,11 @@ public function __construct(
 		protected IUserSession $userSession,
 		protected ParticipantService $participantService,
 		protected PollService $pollService,
+		protected RoomService $roomService,
 		protected IURLGenerator $url,
 		protected IL10N $l,
 		protected IEventDispatcher $dispatcher,
+		protected LoggerInterface $logger,
 	) {
 	}
 
@@ -69,6 +76,124 @@ public function updateName(Room $room, Participant $participant, string $display
 		}
 	}
 
+	public function validateMailAddress(string $email): bool {
+		return $this->mailer->validateMailAddress($email);
+	}
+
+	/**
+	 * @return array{invites: non-negative-int, duplicates: non-negative-int, invalid?: non-negative-int, invalidLines?: list<non-negative-int>, type?: int<-1, 6>}
+	 * @throws GuestImportException
+	 */
+	public function importEmails(Room $room, $file, bool $testRun): array {
+		if ($room->getType() === Room::TYPE_ONE_TO_ONE
+			|| $room->getType() === Room::TYPE_ONE_TO_ONE_FORMER
+			|| $room->getType() === Room::TYPE_NOTE_TO_SELF
+			|| $room->getObjectType() === BreakoutRoom::PARENT_OBJECT_TYPE
+			|| $room->getObjectType() === Room::OBJECT_TYPE_VIDEO_VERIFICATION) {
+			throw new GuestImportException(GuestImportException::REASON_ROOM);
+		}
+
+		$content = fopen($file['tmp_name'], 'rb');
+		$details = fgetcsv($content, escape: '');
+		if (!isset($details[0]) || strtolower($details[0]) !== 'email') {
+			throw new GuestImportException(
+				GuestImportException::REASON_HEADER_EMAIL,
+				$this->l->t('Missing email field in header line'),
+			);
+		}
+		if (isset($details[1]) && strtolower($details[1]) !== 'name') {
+			throw new GuestImportException(
+				GuestImportException::REASON_HEADER_NAME,
+				$this->l->t('Missing name field in header line'),
+			);
+		}
+
+		$participants = $this->participantService->getParticipantsByActorType($room, Attendee::ACTOR_EMAILS);
+		$alreadyInvitedEmails = array_flip(array_map(static fn (Participant $participant): string => $participant->getAttendee()->getInvitedCloudId(), $participants));
+
+		$line = $duplicates = 0;
+		$emailsToAdd = $invalidLines = [];
+		while ($details = fgetcsv($content, escape: '')) {
+			$line++;
+			if (isset($alreadyInvitedEmails[$details[0]])) {
+				$this->logger->debug('Skipping import of ' . $details[0] . ' (line: ' . $line . ') as they are already invited');
+				$duplicates++;
+				continue;
+			}
+
+			if (count($details) > 2) {
+				$this->logger->debug('Invalid entry with too many fields on line: ' . $line);
+				$invalidLines[] = $line;
+				continue;
+			}
+
+			$email = strtolower(trim($details[0]));
+			if (count($details) === 2) {
+				$name = trim($details[1]);
+			} else {
+				$name = null;
+			}
+
+			if (!$this->validateMailAddress($email)) {
+				$this->logger->debug('Invalid email "' . $email . '" on line: ' . $line);
+				$invalidLines[] = $line;
+				continue;
+			}
+
+			if ($name !== null && strcasecmp($name, $email) === 0) {
+				$name = null;
+			}
+
+			$actorId = hash('sha256', $email);
+			$alreadyInvitedEmails[$email] = $actorId;
+			$emailsToAdd[] = [
+				'email' => $email,
+				'actorId' => $actorId,
+				'name' => $name,
+			];
+		}
+
+		if ($testRun) {
+			if (empty($invalidLines)) {
+				return [
+					'invites' => count($emailsToAdd),
+					'duplicates' => $duplicates,
+				];
+			}
+
+			throw new GuestImportException(
+				GuestImportException::REASON_ROWS,
+				$this->l->t('Following lines are invalid: %s', implode(', ', $invalidLines)),
+				$invalidLines,
+				count($emailsToAdd),
+				$duplicates,
+			);
+		}
+
+		$data = [
+			'invites' => count($emailsToAdd),
+			'duplicates' => $duplicates,
+		];
+
+		try {
+			$this->roomService->setType($room, Room::TYPE_PUBLIC);
+			$data['type'] = $room->getType();
+		} catch (TypeException) {
+		}
+
+		foreach ($emailsToAdd as $add) {
+			$participant = $this->participantService->inviteEmailAddress($room, $add['actorId'], $add['email'], $add['name']);
+			$this->sendEmailInvitation($room, $participant);
+		}
+
+		if (!empty($invalidLines)) {
+			$data['invalidLines'] = $invalidLines;
+			$data['invalid'] = count($invalidLines);
+		}
+
+		return $data;
+	}
+
 	public function sendEmailInvitation(Room $room, Participant $participant): void {
 		if ($participant->getAttendee()->getActorType() !== Attendee::ACTOR_EMAILS) {
 			throw new \InvalidArgumentException('Cannot send email for non-email participant actor type');

lib/Service/ParticipantService.php

@@ -806,7 +806,7 @@ public function addCircle(Room $room, Circle $circle, array $existingParticipant
 		$this->addUsers($room, $newParticipants, bansAlreadyChecked: true);
 	}
 
-	public function inviteEmailAddress(Room $room, string $actorId, string $email): Participant {
+	public function inviteEmailAddress(Room $room, string $actorId, string $email, ?string $name = null): Participant {
 		$lastMessage = 0;
 		if ($room->getLastMessage() instanceof IComment) {
 			$lastMessage = (int)$room->getLastMessage()->getId();
@@ -822,6 +822,10 @@ public function inviteEmailAddress(Room $room, string $actorId, string $email):
 			ISecureRandom::CHAR_HUMAN_READABLE
 		));
 
+		if ($name !== null) {
+			$attendee->setDisplayName($name);
+		}
+
 		if ($room->getSIPEnabled() !== Webinary::SIP_DISABLED
 			&& $this->talkConfig->isSIPConfigured()) {
 			$attendee->setPin($this->generatePin());