RocketChat/Rocket.Chat

import type { IOmnichannelRoom } from '@rocket.chat/core-typings';
import { isOmnichannelRoom } from '@rocket.chat/core-typings';
import { LivechatRooms } from '@rocket.chat/models';

import { callbacks } from '../../../../lib/callbacks';
import type { CloseRoomParams } from '../lib/LivechatTyped';
import { sendTranscript } from '../lib/sendTranscript';

type LivechatCloseCallbackParams = {
    room: IOmnichannelRoom;
    options: CloseRoomParams['options'];
};

const sendEmailTranscriptOnClose = async (params: LivechatCloseCallbackParams): Promise<LivechatCloseCallbackParams> => {
    const { room, options } = params;

    if (!isOmnichannelRoom(room)) {
        return params;
    }

    const { _id: rid, v: { token } = {} } = room;
    if (!token) {
        return params;
    }

    const transcriptData = resolveTranscriptData(room, options);
    if (!transcriptData) {
        return params;
    }

    const { email, subject, requestedBy: user } = transcriptData;

    await Promise.all([sendTranscript({ token, rid, email, subject, user }), LivechatRooms.unsetEmailTranscriptRequestedByRoomId(rid)]);

    delete room.transcriptRequest;

    return {
        room,
        options,
    };
};

const resolveTranscriptData = (
    room: IOmnichannelRoom,
    options: LivechatCloseCallbackParams['options'] = {},
): IOmnichannelRoom['transcriptRequest'] | undefined => {
    const { transcriptRequest: roomTranscriptRequest } = room;

    const { emailTranscript: optionsTranscriptRequest } = options;

    // Note: options.emailTranscript will override the room.transcriptRequest check
    // If options.emailTranscript is not set, then the room.transcriptRequest will be checked
    if (optionsTranscriptRequest === undefined) {
        return roomTranscriptRequest;
    }

    if (!optionsTranscriptRequest.sendToVisitor) {
        return undefined;
    }
    return optionsTranscriptRequest.requestData;
};

callbacks.add('livechat.closeRoom', sendEmailTranscriptOnClose, callbacks.priority.HIGH, 'livechat-send-email-transcript-on-close-room');