snapshot of https://github.com/espocrm/espocrm.git (master, 2026-09-18; blobs > 131072B omitted)

application/Espo/Modules/Crm/Tools/Meeting/Invitation/Invitee.php

@@ -0,0 +1,54 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting\Invitation;
+
+readonly class Invitee
+{
+    public function __construct(
+        private string $entityType,
+        private string $id,
+        private ?string $emailAddress = null,
+    ) {}
+
+    public function getEntityType(): string
+    {
+        return $this->entityType;
+    }
+
+    public function getId(): string
+    {
+        return $this->id;
+    }
+
+    public function getEmailAddress(): ?string
+    {
+        return $this->emailAddress;
+    }
+}

application/Espo/Modules/Crm/Tools/Meeting/Invitation/Sender.php

@@ -0,0 +1,286 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting\Invitation;
+
+use Espo\Core\Binding\BindingContainerBuilder;
+use Espo\Core\Exceptions\Forbidden;
+use Espo\Core\InjectableFactory;
+use Espo\Core\Mail\Exceptions\SendingError;
+use Espo\Core\Mail\SmtpParams;
+use Espo\Core\Utils\Config;
+use Espo\Core\Utils\Log;
+use Espo\Core\Utils\Metadata;
+use Espo\Entities\User;
+use Espo\Modules\Crm\Business\Event\Invitations;
+use Espo\Modules\Crm\Entities\Call;
+use Espo\Modules\Crm\Entities\Contact;
+use Espo\Modules\Crm\Entities\Lead;
+use Espo\Modules\Crm\Entities\Meeting;
+use Espo\ORM\Entity;
+use Espo\ORM\EntityManager;
+use Espo\ORM\Repository\RDBRelation;
+use Espo\Tools\Email\SendService;
+use LogicException;
+
+/**
+ * @since 9.0.0
+ */
+class Sender
+{
+    private const string TYPE_INVITATION = 'invitation';
+    private const string TYPE_CANCELLATION = 'cancellation';
+
+    public function __construct(
+        private SendService $sendService,
+        private User $user,
+        private InjectableFactory $injectableFactory,
+        private EntityManager $entityManager,
+        private Config $config,
+        private Metadata $metadata,
+        private Log $log,
+    ) {}
+
+    /**
+     * @param Meeting|Call $entity
+     * @param ?Invitee[] $targets
+     * @return Entity[] Entities an invitation was sent to.
+     * @throws SendingError
+     * @throws Forbidden
+     */
+    public function sendInvitation(Meeting|Call $entity, ?array $targets = null): array
+    {
+        return $this->sendInternal($entity, self::TYPE_INVITATION, $targets);
+    }
+
+    /**
+     * @param Meeting|Call $entity
+     * @param ?Invitee[] $targets
+     * @return Entity[] Entities an invitation was sent to.
+     * @throws SendingError
+     * @throws Forbidden
+     */
+    public function sendCancellation(Meeting|Call $entity, ?array $targets = null): array
+    {
+        return $this->sendInternal($entity, self::TYPE_CANCELLATION, $targets);
+    }
+
+    /**
+     * @param ?Invitee[] $targets
+     * @return (User|Contact|Lead)[]
+     */
+    private function getRecipients(Meeting|Call $entity, string $type, ?array $targets): array
+    {
+        $linkList = [
+            Meeting::LINK_USERS,
+            Meeting::LINK_CONTACTS,
+            Meeting::LINK_LEADS,
+        ];
+
+        $output = [];
+
+        foreach ($linkList as $link) {
+            /** @var RDBRelation<User>|RDBRelation<Contact>|RDBRelation<Lead> $builder */
+            $builder = $this->entityManager->getRelation($entity, $link);
+
+            if ($targets === null && $type === self::TYPE_INVITATION) {
+                $builder->where(['@relation.status=' => Meeting::ATTENDEE_STATUS_NONE]);
+            }
+
+            $collection = $builder->find();
+
+            foreach ($collection as $attendee) {
+                $emailAddress = $attendee->getEmailAddress();
+
+                if ($targets) {
+                    $target = self::findTarget($attendee, $targets);
+
+                    if (!$target) {
+                        continue;
+                    }
+
+                    if ($target->getEmailAddress()) {
+                        $emailAddress = $target->getEmailAddress();
+                    }
+                }
+
+                if (!$emailAddress) {
+                    continue;
+                }
+
+                $output[] = $attendee;
+            }
+        }
+
+        return $output;
+    }
+
+    /**
+     * @param ?Invitee[] $targets
+     * @return Entity[]
+     * @throws SendingError
+     * @throws Forbidden
+     */
+    private function sendInternal(Meeting|Call $entity, string $type, ?array $targets): array
+    {
+        $this->checkStatus($entity, $type);
+
+        $sender = $this->getSender();
+
+        $sentAddressList = [];
+        $resultEntityList = [];
+
+        $recipients = $this->getRecipients($entity, $type, $targets);
+
+        foreach ($recipients as $recipient) {
+            $link = $this->getLinkName($recipient);
+
+            $this->entityManager
+                ->getRelation($entity, $link)
+                ->updateColumns($recipient, ['status' => Meeting::ATTENDEE_STATUS_NONE]);
+        }
+
+        foreach ($recipients as $attendee) {
+            $emailAddress = $attendee->getEmailAddress();
+
+            $link = $this->getLinkName($attendee);
+
+            if ($targets) {
+                $target = self::findTarget($attendee, $targets);
+
+                if ($target?->getEmailAddress()) {
+                    $emailAddress = $target->getEmailAddress();
+                }
+            }
+
+            if (!$emailAddress || in_array($emailAddress, $sentAddressList)) {
+                continue;
+            }
+
+            try {
+                if ($type === self::TYPE_INVITATION) {
+                    $sender->sendInvitation($entity, $attendee, $link, $emailAddress);
+                }
+
+                if ($type === self::TYPE_CANCELLATION) {
+                    $sender->sendCancellation($entity, $attendee, $link, $emailAddress);
+                }
+            } catch (SendingError $e) {
+                $this->log->error("Could not send event invitation to {entityType} {id}.", [
+                    'exception' => $e,
+                    'entityType' => $attendee->getEntityType(),
+                    'id' => $attendee->getId(),
+                ]);
+
+                continue;
+            }
+
+            $sentAddressList[] = $emailAddress;
+            $resultEntityList[] = $attendee;
+        }
+
+        return $resultEntityList;
+    }
+
+    /**
+     * @param Invitee[] $targets
+     */
+    private static function findTarget(Entity $entity, array $targets): ?Invitee
+    {
+        foreach ($targets as $target) {
+            if (
+                $entity->getEntityType() === $target->getEntityType() &&
+                $entity->getId() === $target->getId()
+            ) {
+                return $target;
+            }
+        }
+
+        return null;
+    }
+
+    private function getSender(): Invitations
+    {
+        $smtpParams = !$this->config->get('eventInvitationForceSystemSmtp') ?
+            $this->sendService->getUserSmtpParams($this->user->getId()) :
+            null;
+
+        $builder = BindingContainerBuilder::create();
+
+        if ($smtpParams) {
+            $builder->bindInstance(SmtpParams::class, $smtpParams);
+        }
+
+        return $this->injectableFactory->createWithBinding(Invitations::class, $builder->build());
+    }
+
+    /**
+     * @throws Forbidden
+     */
+    private function checkStatus(Meeting|Call $entity, string $type): void
+    {
+        $entityType = $entity->getEntityType();
+
+        if ($type === self::TYPE_CANCELLATION) {
+            if (!in_array($entity->getStatus(), $this->getCanceledStatusList($entityType))) {
+                throw new Forbidden("Can't send invitation for not canceled event.");
+            }
+
+            return;
+        }
+
+        $notActualStatusList = [
+            ...($this->metadata->get("scopes.$entityType.completedStatusList") ?? []),
+            ...$this->getCanceledStatusList($entityType),
+        ];
+
+        if (in_array($entity->getStatus(), $notActualStatusList)) {
+            throw new Forbidden("Can't send invitation for not actual event.");
+        }
+    }
+
+    /**
+     * @return string[]
+     */
+    private function getCanceledStatusList(string $entityType): array
+    {
+        return $this->metadata->get("scopes.$entityType.canceledStatusList") ?? [];
+    }
+
+    private function getLinkName(User|Contact|Lead $recipient): string
+    {
+        $linkMap = [
+            User::ENTITY_TYPE => Meeting::LINK_USERS,
+            Contact::ENTITY_TYPE => Meeting::LINK_CONTACTS,
+            Lead::ENTITY_TYPE => Meeting::LINK_LEADS,
+        ];
+
+        return $linkMap[$recipient::ENTITY_TYPE] ?? throw new LogicException();
+    }
+}

application/Espo/Modules/Crm/Tools/Meeting/Invitation/SenderFactory.php

@@ -0,0 +1,57 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting\Invitation;
+
+use Espo\Core\Binding\BindingContainerBuilder;
+use Espo\Core\InjectableFactory;
+use Espo\Entities\User;
+
+/**
+ * @since 9.0.0
+ */
+class SenderFactory
+{
+    public function __construct(
+        private InjectableFactory $injectableFactory,
+    ) {}
+
+    /**
+     * Create a sender for a user. The SMTP of the user will be used (if not disabled in the config).
+     */
+    public function createForUser(User $user): Sender
+    {
+        return $this->injectableFactory->createWithBinding(
+            Sender::class,
+            BindingContainerBuilder::create()
+                ->bindInstance(User::class, $user)
+                ->build()
+        );
+    }
+}

application/Espo/Modules/Crm/Tools/Meeting/InvitationService.php

@@ -0,0 +1,122 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting;
+
+use Espo\Core\Acl;
+use Espo\Core\Exceptions\Error;
+use Espo\Core\Exceptions\Forbidden;
+use Espo\Core\Exceptions\NotFound;
+use Espo\Core\Mail\Exceptions\SendingError;
+use Espo\Core\Record\ServiceContainer as RecordServiceContainer;
+use Espo\Modules\Crm\Entities\Call;
+use Espo\Modules\Crm\Entities\Meeting;
+use Espo\Modules\Crm\Tools\Meeting\Invitation\Sender;
+use Espo\Modules\Crm\Tools\Meeting\Invitation\Invitee;
+use Espo\ORM\Entity;
+
+class InvitationService
+{
+    private const TYPE_INVITATION = 'invitation';
+    private const TYPE_CANCELLATION = 'cancellation';
+
+    public function __construct(
+        private RecordServiceContainer $recordServiceContainer,
+        private Acl $acl,
+        private Sender $invitationSender,
+    ) {}
+
+    /**
+     * Send invitation emails for a meeting (or call). Checks access. Uses user's SMTP if available.
+     *
+     * @param ?Invitee[] $targets
+     * @return Entity[] Entities an invitation was sent to.
+     * @throws NotFound
+     * @throws Forbidden
+     * @throws Error
+     * @throws SendingError
+     */
+    public function send(string $entityType, string $id, ?array $targets = null): array
+    {
+        return $this->sendInternal($entityType, $id, $targets, self::TYPE_INVITATION);
+    }
+
+    /**
+     * Send cancellation emails for a meeting (or call). Checks access. Uses user's SMTP if available.
+     *
+     * @param ?Invitee[] $targets
+     * @return Entity[] Entities a cancellation was sent to.
+     * @throws NotFound
+     * @throws Forbidden
+     * @throws Error
+     * @throws SendingError
+     */
+    public function sendCancellation(string $entityType, string $id, ?array $targets = null): array
+    {
+        return $this->sendInternal($entityType, $id, $targets, self::TYPE_CANCELLATION);
+    }
+
+    /**
+     * @param ?Invitee[] $targets
+     * @return Entity[]
+     * @throws NotFound
+     * @throws Forbidden
+     * @throws Error
+     * @throws SendingError
+     */
+    private function sendInternal(
+        string $entityType,
+        string $id,
+        ?array $targets,
+        string $type,
+    ): array {
+
+        $entity = $this->recordServiceContainer
+            ->get($entityType)
+            ->getEntity($id);
+
+        if (!$entity) {
+            throw new NotFound();
+        }
+
+        if (!$this->acl->checkEntityEdit($entity)) {
+            throw new Forbidden("No edit access.");
+        }
+
+        if (!$entity instanceof Meeting && !$entity instanceof Call) {
+            throw new Error("Not supported entity type.");
+        }
+
+        if ($type === self::TYPE_CANCELLATION) {
+            return $this->invitationSender->sendCancellation($entity, $targets);
+        }
+
+        return $this->invitationSender->sendInvitation($entity, $targets);
+    }
+}

application/Espo/Modules/Crm/Tools/Meeting/MeetingServiceAvailabilityChecker.php

@@ -0,0 +1,42 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting;
+
+use Espo\Entities\User;
+
+/**
+ * Checks whether an online meeting can be created.
+ *
+ * @since 10.0.0
+ */
+interface MeetingServiceAvailabilityChecker
+{
+    public function check(User $user): bool;
+}

application/Espo/Modules/Crm/Tools/Meeting/MeetingServiceAvailabilityCheckerFactory.php

@@ -0,0 +1,54 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting;
+
+use Espo\Core\InjectableFactory;
+use Espo\Core\Utils\Metadata;
+use RuntimeException;
+
+class MeetingServiceAvailabilityCheckerFactory
+{
+    public function __construct(
+        private Metadata $metadata,
+        private InjectableFactory $injectableFactory,
+    ) {}
+
+    public function create(string $name): MeetingServiceAvailabilityChecker
+    {
+        /** @var ?class-string<MeetingServiceAvailabilityChecker> $className */
+        $className = $this->metadata->get("app.meetingServices.$name.availabilityCheckerClassName");
+
+        if (!$className) {
+            throw new RuntimeException("Service '$name' not available.");
+        }
+
+        return $this->injectableFactory->create($className);
+    }
+}

application/Espo/Modules/Crm/Tools/Meeting/MeetingServicesAppParam.php

@@ -0,0 +1,77 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting;
+
+use Espo\Core\Utils\Metadata;
+use Espo\Entities\User;
+use Espo\Tools\App\AppParam;
+
+/**
+ * @noinspection PhpUnused
+ */
+class MeetingServicesAppParam implements AppParam
+{
+    public function __construct(
+        private Metadata $metadata,
+        private User $user,
+        private MeetingServiceAvailabilityCheckerFactory $factory,
+    ) {}
+
+    /**
+     * @return array<int, mixed>
+     */
+    public function get(): array
+    {
+        $output = [];
+
+        /** @var array<string, array<string, mixed>> $services */
+        $services = $this->metadata->get("app.meetingServices") ?? [];
+
+        foreach ($services as $name => $item) {
+            $enabled = $item['enabled'] ?? false;
+
+            if (!$enabled) {
+                continue;
+            }
+
+            $checker = $this->factory->create($name);
+
+            if (!$checker->check($this->user)) {
+                continue;
+            }
+
+            $output[] = [
+                'name' => $name
+            ];
+        }
+
+        return $output;
+    }
+}

application/Espo/Modules/Crm/Tools/Meeting/Service.php

@@ -0,0 +1,276 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Modules\Crm\Tools\Meeting;
+
+use Espo\Core\Acl;
+use Espo\Core\Exceptions\BadRequest;
+use Espo\Core\Exceptions\Forbidden;
+use Espo\Core\Exceptions\NotFound;
+use Espo\Core\HookManager;
+use Espo\Core\Name\Field;
+use Espo\Core\ORM\Entity as CoreEntity;
+use Espo\Core\Record\Collection as RecordCollection;
+use Espo\Core\Utils\Metadata;
+use Espo\Entities\Note;
+use Espo\Entities\User;
+use Espo\Modules\Crm\Entities\Call;
+use Espo\Modules\Crm\Entities\Meeting;
+use Espo\ORM\Collection;
+use Espo\ORM\Entity;
+use Espo\ORM\EntityManager;
+use Espo\ORM\Name\Attribute;
+use LogicException;
+
+class Service
+{
+    private const string NOTE_TYPE_EVENT_CONFIRMATION = 'EventConfirmation';
+
+    public function __construct(
+        private User $user,
+        private EntityManager $entityManager,
+        private HookManager $hookManager,
+        private Acl $acl,
+        private Metadata $metadata
+    ) {}
+
+    /**
+     * Set an acceptance for a current user.
+     *
+     * @throws BadRequest
+     * @throws NotFound
+     * @throws Forbidden
+     */
+    public function setAcceptance(string $entityType, string $id, string $status): void
+    {
+        /** @var string[] $statusList */
+        $statusList = $this->entityManager
+            ->getDefs()
+            ->getEntity($entityType)
+            ->getField('acceptanceStatus')
+            ->getParam('options') ?? [];
+
+        if (!in_array($status, $statusList) || $status === Meeting::ATTENDEE_STATUS_NONE) {
+            throw new BadRequest("Acceptance status not allowed.");
+        }
+
+        $entity = $this->entityManager->getEntityById($entityType, $id);
+
+        if (!$entity) {
+            throw new NotFound();
+        }
+
+        if (!$entity instanceof CoreEntity) {
+            throw new LogicException();
+        }
+
+        if (!$entity->hasLinkMultipleId(Meeting::LINK_USERS, $this->user->getId())) {
+            throw new Forbidden();
+        }
+
+        $currentStatus = $this->entityManager
+            ->getRDBRepository($entityType)
+            ->getRelation($entity, Meeting::LINK_USERS)
+            ->getColumn($this->user, 'status');
+
+        if ($currentStatus === $status) {
+            return;
+        }
+
+        $this->entityManager
+            ->getRDBRepository($entityType)
+            ->getRelation($entity, Meeting::LINK_USERS)
+            ->updateColumnsById($this->user->getId(), ['status' => $status]);
+
+        if ($this->metadata->get(['scopes', $entityType, 'stream'])) {
+            $this->createEventConfirmationNote($entity, $status);
+        }
+
+        $actionData = [
+            'eventName' => $entity->get(Field::NAME),
+            'eventType' => $entity->getEntityType(),
+            'eventId' => $entity->getId(),
+            'dateStart' => $entity->get(Meeting::FIELD_DATE_START),
+            'status' => $status,
+            'link' => 'users',
+            'inviteeType' => User::ENTITY_TYPE,
+            'inviteeId' => $this->user->getId(),
+        ];
+
+        $this->hookManager->process($entityType, 'afterConfirmation', $entity, [], $actionData);
+    }
+
+    private function createEventConfirmationNote(CoreEntity $entity, string $status): void
+    {
+        $options = ['createdById' => $this->user->getId()];
+
+        $style = $this->metadata
+            ->get(['entityDefs', $entity->getEntityType(), 'fields', 'acceptanceStatus', 'style', $status]);
+
+        $this->entityManager->createEntity(Note::ENTITY_TYPE, [
+            'type' => self::NOTE_TYPE_EVENT_CONFIRMATION,
+            'parentId' => $entity->getId(),
+            'parentType' => $entity->getEntityType(),
+            'relatedId' => $this->user->getId(),
+            'relatedType' => $this->user->getEntityType(),
+            'data' => [
+                'status' => $status,
+                'style' => $style,
+            ],
+        ], $options);
+    }
+
+    /**
+     * @param string[] $ids
+     * @throws Forbidden
+     */
+    public function massSetHeld(string $entityType, array $ids): void
+    {
+        if (!$this->acl->checkScope($entityType, Acl\Table::ACTION_EDIT)) {
+            throw new Forbidden();
+        }
+
+        if (!$this->acl->checkField($entityType, Meeting::FIELD_STATUS, Acl\Table::ACTION_EDIT)) {
+            throw new Forbidden("No edit access to 'status' field.");
+        }
+
+        foreach ($ids as $id) {
+            $entity = $this->entityManager->getEntityById($entityType, $id);
+
+            if (!$entity || !$this->acl->checkEntityEdit($entity)) {
+                continue;
+            }
+
+            $entity->set(Meeting::FIELD_STATUS, Meeting::STATUS_HELD);
+
+            $this->entityManager->saveEntity($entity);
+        }
+    }
+
+    /**
+     * @param string[] $ids
+     * @throws Forbidden
+     */
+    public function massSetNotHeld(string $entityType, array $ids): void
+    {
+        if (!$this->acl->checkScope($entityType, Acl\Table::ACTION_EDIT)) {
+            throw new Forbidden();
+        }
+
+        if (!$this->acl->checkField($entityType, Meeting::FIELD_STATUS, Acl\Table::ACTION_EDIT)) {
+            throw new Forbidden("No edit access to 'status' field.");
+        }
+
+        foreach ($ids as $id) {
+            $entity = $this->entityManager->getEntityById($entityType, $id);
+
+            if (!$entity || !$this->acl->checkEntityEdit($entity)) {
+                continue;
+            }
+
+            $entity->set(Meeting::FIELD_STATUS, Meeting::STATUS_NOT_HELD);
+
+            $this->entityManager->saveEntity($entity);
+        }
+    }
+
+    /**
+     * Get all attendees.
+     *
+     * @throws Forbidden
+     * @throws NotFound
+     * @return RecordCollection<Entity>
+     */
+    public function getAttendees(string $entityType, string $id): RecordCollection
+    {
+        $entity = $this->entityManager->getEntityById($entityType, $id);
+
+        if (!in_array($entityType, [Meeting::ENTITY_TYPE, Call::ENTITY_TYPE])) {
+            throw new LogicException();
+        }
+
+        if (!$entity) {
+            throw new NotFound();
+        }
+
+        if (!$this->acl->checkEntityRead($entity)) {
+            throw new Forbidden();
+        }
+
+        $linkList = [
+            Meeting::LINK_USERS,
+            Meeting::LINK_CONTACTS,
+            Meeting::LINK_LEADS,
+        ];
+
+        $linkList = array_filter($linkList, function ($item) use ($entityType) {
+            return $this->acl->checkField($item, $entityType);
+        });
+
+        $linkList = array_values($linkList);
+
+        $list = [];
+
+        foreach ($linkList as $link) {
+            $itemCollection = $this->entityManager
+                ->getRDBRepository($entityType)
+                ->getRelation($entity, $link)
+                ->select([
+                    Attribute::ID,
+                    Field::NAME,
+                    'acceptanceStatus',
+                    Field::EMAIL_ADDRESS,
+                ])
+                ->order(Field::NAME)
+                ->find();
+
+            $list = array_merge($list, [...$itemCollection]);
+        }
+
+        /** @var Collection<Entity> $collection */
+        $collection = $this->entityManager->getCollectionFactory()->create(null, $list);
+
+        foreach ($collection as $e) {
+            if (
+                $this->acl->checkEntityRead($e) &&
+                $this->acl->checkField($e->getEntityType(), Field::EMAIL_ADDRESS)
+            ) {
+                continue;
+            }
+
+            if (!$e->get(Field::EMAIL_ADDRESS)) {
+                continue;
+            }
+
+            $e->set(Field::EMAIL_ADDRESS, 'dummy@dummy.dummy');
+        }
+
+        return RecordCollection::create($collection);
+    }
+}