Add comprehensive collaborative editing documentation

code_samples/collaborative_editing/collaboration_event_listener.php

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+<?php
+
+declare(strict_types=1);
+
+namespace App\EventListener;
+
+use Ibexa\Contracts\Collaboration\Session\Event\JoinSessionEvent;
+use Ibexa\Contracts\Collaboration\Session\Event\SessionPublicPreviewEvent;
+use Ibexa\Contracts\Core\Repository\ContentService;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+class CollaborationEventListener implements EventSubscriberInterface
+{
+    public function __construct(
+        private ContentService $contentService,
+        private LoggerInterface $logger
+    ) {
+    }
+
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            JoinSessionEvent::class => 'onJoinSession',
+            SessionPublicPreviewEvent::class => 'onSessionPublicPreview',
+        ];
+    }
+
+    /**
+     * Handle user joining a collaboration session
+     */
+    public function onJoinSession(JoinSessionEvent $event): void
+    {
+        $session = $event->getSession();
+        $user = $event->getUser();
+
+        $this->logger->info('User joined collaboration session', [
+            'user_id' => $user->getId(),
+            'user_name' => $user->getName(),
+            'session_id' => $session->getId(),
+            'content_id' => $session->getContentId(),
+        ]);
+
+        // Custom logic: Send notification to other participants
+        $this->notifyOtherParticipants($session, $user);
+
+        // Custom logic: Update user activity metrics
+        $this->updateUserActivityMetrics($user->getId(), 'session_join');
+    }
+
+    /**
+     * Handle public preview access for collaboration session
+     */
+    public function onSessionPublicPreview(SessionPublicPreviewEvent $event): void
+    {
+        $session = $event->getSession();
+        $content = $this->contentService->loadContent($session->getContentId());
+
+        $this->logger->info('Public preview accessed for collaboration session', [
+            'session_id' => $session->getId(),
+            'content_id' => $session->getContentId(),
+            'content_name' => $content->getName(),
+            'preview_url' => $event->getPreviewUrl(),
+        ]);
+
+        // Custom logic: Track public preview usage
+        $this->trackPublicPreviewAccess($session, $event->getPreviewUrl());
+    }
+
+    /**
+     * Notify other participants when someone joins the session
+     */
+    private function notifyOtherParticipants($session, $user): void
+    {
+        // Implementation would send real-time notifications
+        // to other active participants in the session
+        $this->logger->debug('Notifying other participants of new joiner', [
+            'session_id' => $session->getId(),
+            'new_participant' => $user->getName(),
+        ]);
+    }
+
+    /**
+     * Update user activity metrics for analytics
+     */
+    private function updateUserActivityMetrics(int $userId, string $action): void
+    {
+        // Implementation would update user activity statistics
+        // for collaboration analytics and reporting
+        $this->logger->debug('Updated user activity metrics', [
+            'user_id' => $userId,
+            'action' => $action,
+            'timestamp' => new \DateTime(),
+        ]);
+    }
+
+    /**
+     * Track public preview access for analytics
+     */
+    private function trackPublicPreviewAccess($session, string $previewUrl): void
+    {
+        // Implementation would track public preview usage
+        // for collaboration session analytics
+        $this->logger->debug('Tracked public preview access', [
+            'session_id' => $session->getId(),
+            'preview_url' => $previewUrl,
+            'access_time' => new \DateTime(),
+        ]);
+    }
+}

code_samples/collaborative_editing/create_invitation.php

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+<?php
+
+declare(strict_types=1);
+
+namespace App\Collaboration;
+
+use Ibexa\Contracts\Collaboration\Invitation\InvitationServiceInterface;
+use Ibexa\Contracts\Collaboration\Values\Invitation\InvitationCreateStruct;
+use Ibexa\Contracts\Core\Repository\ContentService;
+use Ibexa\Contracts\Core\Repository\UserService;
+
+class InvitationManager
+{
+    public function __construct(
+        private InvitationServiceInterface $invitationService,
+        private ContentService $contentService,
+        private UserService $userService
+    ) {
+    }
+
+    /**
+     * Create a collaboration invitation for a content item
+     */
+    public function createInvitation(int $contentId, int $userId, string $message = ''): void
+    {
+        $content = $this->contentService->loadContent($contentId);
+        $user = $this->userService->loadUser($userId);
+
+        $invitationCreateStruct = new InvitationCreateStruct();
+        $invitationCreateStruct->contentId = $contentId;
+        $invitationCreateStruct->userId = $userId;
+        $invitationCreateStruct->message = $message;
+        $invitationCreateStruct->permissions = ['edit', 'comment'];
+
+        $invitation = $this->invitationService->createInvitation($invitationCreateStruct);
+
+        // Send notification to invited user
+        // This would typically trigger email notifications
+        echo "Invitation created for user {$user->getName()} to collaborate on '{$content->getName()}'";
+    }
+
+    /**
+     * Create invitation for external user by email
+     */
+    public function createExternalInvitation(int $contentId, string $email, string $message = ''): void
+    {
+        $content = $this->contentService->loadContent($contentId);
+
+        $invitationCreateStruct = new InvitationCreateStruct();
+        $invitationCreateStruct->contentId = $contentId;
+        $invitationCreateStruct->email = $email;
+        $invitationCreateStruct->message = $message;
+        $invitationCreateStruct->permissions = ['comment']; // Limited permissions for external users
+        $invitationCreateStruct->expirationDate = new \DateTime('+7 days'); // Expires in 7 days
+
+        $invitation = $this->invitationService->createInvitation($invitationCreateStruct);
+
+        echo "External invitation created for {$email} to collaborate on '{$content->getName()}'";
+    }
+}

code_samples/collaborative_editing/session_management.php

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+<?php
+
+declare(strict_types=1);
+
+namespace App\Collaboration;
+
+use Ibexa\Contracts\Collaboration\Session\SessionServiceInterface;
+use Ibexa\Contracts\Collaboration\Values\Session\SessionCreateStruct;
+use Ibexa\Contracts\Collaboration\Values\Session\SessionQuery;
+use Ibexa\Contracts\Collaboration\Session\Query\Criterion;
+use Ibexa\Contracts\Collaboration\Session\Query\SortClause;
+
+class CollaborationSessionManager
+{
+    public function __construct(
+        private SessionServiceInterface $sessionService
+    ) {
+    }
+
+    /**
+     * Create a new collaboration session
+     */
+    public function createSession(int $contentId, array $participants = []): void
+    {
+        $sessionCreateStruct = new SessionCreateStruct();
+        $sessionCreateStruct->contentId = $contentId;
+        $sessionCreateStruct->participants = $participants;
+        $sessionCreateStruct->settings = [
+            'realTimeEnabled' => true,
+            'allowExternalUsers' => false,
+            'maxParticipants' => 10,
+            'autoSave' => true,
+        ];
+
+        $session = $this->sessionService->createSession($sessionCreateStruct);
+
+        echo "Collaboration session created with ID: {$session->getId()}";
+    }
+
+    /**
+     * Find active collaboration sessions for a user
+     */
+    public function findUserSessions(int $userId): array
+    {
+        $query = new SessionQuery();
+        $query->filter = new Criterion\ParticipantId($userId);
+        $query->sortClauses = [
+            new SortClause\UpdatedAt('DESC'),
+        ];
+        $query->limit = 50;
+
+        $searchResult = $this->sessionService->findSessions($query);
+
+        return $searchResult->sessions;
+    }
+
+    /**
+     * Join an existing collaboration session
+     */
+    public function joinSession(int $sessionId, int $userId): void
+    {
+        $session = $this->sessionService->loadSession($sessionId);
+
+        // Add user as participant
+        $this->sessionService->addParticipant($sessionId, $userId);
+
+        echo "User {$userId} joined collaboration session {$sessionId}";
+    }
+
+    /**
+     * Leave a collaboration session
+     */
+    public function leaveSession(int $sessionId, int $userId): void
+    {
+        $this->sessionService->removeParticipant($sessionId, $userId);
+
+        echo "User {$userId} left collaboration session {$sessionId}";
+    }
+
+    /**
+     * Get session statistics
+     */
+    public function getSessionStats(int $sessionId): array
+    {
+        $session = $this->sessionService->loadSession($sessionId);
+        $participants = $this->sessionService->getSessionParticipants($sessionId);
+
+        return [
+            'session_id' => $session->getId(),
+            'content_id' => $session->getContentId(),
+            'created_at' => $session->getCreatedAt(),
+            'updated_at' => $session->getUpdatedAt(),
+            'participant_count' => count($participants),
+            'active_participants' => array_filter($participants, fn($p) => $p->isActive()),
+            'real_time_enabled' => $session->getSetting('realTimeEnabled', false),
+        ];
+    }
+}