RocketChat/Rocket.Chat

import { Users } from '@rocket.chat/models';

import { RoutingManager } from '../../../../../../app/livechat/server/lib/RoutingManager';
import type { IRoutingManagerConfig } from '../../../../../../definition/IRoutingManagerConfig';

/* Load Balancing Queuing method:
 *
 * default method where the agent with the least number
 * of open chats is paired with the incoming livechat
 */
class LoadBalancing {
    private _config: IRoutingManagerConfig;

    constructor() {
        this._config = {
            previewRoom: false,
            showConnecting: false,
            showQueue: false,
            showQueueLink: false,
            returnQueue: false,
            enableTriggerAction: true,
            autoAssignAgent: true,
        };
    }

    get config(): IRoutingManagerConfig {
        return this._config;
    }

    async getNextAgent(department?: string, ignoreAgentId?: string) {
        const nextAgent = await Users.getNextLeastBusyAgent(department, ignoreAgentId);
        if (!nextAgent) {
            return;
        }
        const { agentId, username } = nextAgent;
        return { agentId, username };
    }
}

RoutingManager.registerMethod('Load_Balancing', LoadBalancing);