RocketChat/Rocket.Chat

import { LivechatDepartment, LivechatDepartmentAgents, LivechatUnit } from '@rocket.chat/models';

import { helperLogger } from '../../lib/logger';

export const getDepartmentsWhichUserCanAccess = async (userId: string, includeDisabled = false): Promise<string[]> => {
    const departments = await LivechatDepartmentAgents.find(
        {
            agentId: userId,
        },
        {
            projection: {
                departmentId: 1,
            },
        },
    ).toArray();

    const monitoredDepartments = await LivechatUnit.findMonitoredDepartmentsByMonitorId(userId, includeDisabled);
    const combinedDepartments = [
        ...departments.map((department) => department.departmentId),
        ...monitoredDepartments.map((department) => department._id),
    ];

    return [...new Set(combinedDepartments)];
};

export const hasAccessToDepartment = async (userId: string, departmentId: string): Promise<boolean> => {
    const department = await LivechatDepartmentAgents.findOneByAgentIdAndDepartmentId(userId, departmentId, { projection: { _id: 1 } });
    if (department) {
        helperLogger.debug(`User ${userId} has access to department ${departmentId} because they are an agent`);
        return true;
    }

    const monitorAccess = await LivechatDepartment.checkIfMonitorIsMonitoringDepartmentById(userId, departmentId);
    helperLogger.debug(
        `User ${userId} ${monitorAccess ? 'has' : 'does not have'} access to department ${departmentId} because they are a monitor`,
    );
    return monitorAccess;
};