@onboardmobility/whatsapp/lib/wassengerApi.js

Utility class to connect to WhatsApp APIs

'use strict';

const request = require('request-promise');

/**
 * Envs vars
 */
const { WA_BASE_URL, WA_TOKEN, } = process.env;

async function processIncomingMessages(data) {
    if (data.event === 'message:in:new') {
        const body = data.data.body;
        const author = data.data.from;
        const fromMe = data.data.fromNumber === data.data.toNumber;
        const senderName = data.data.chat.name;
        const type = data.data.type;
        const attachments = [];

        if (data.data.media) {
            attachments.push({
                contentUrl: WA_BASE_URL + data.data.media.links['download'].replace('/v1', '') + `?token=${WA_TOKEN}`,
                name: `${data.data.media.message}.${data.data.media.extension}`,
                contentType: data.data.media.mime
            });
        }

        return { body, author, fromMe, senderName, type, result: true, attachments };
    }

    return { result: false };
}

async function sendMessage({ caption, text, url, to }) {
    if (to && to.includes('@c.us')) {
        const body = {
            phone: to,
            message: text,
        };

        return request.post({
            url: `${WA_BASE_URL}/messages`,
            headers: {
                'Content-Type': 'application/json',
                'token': WA_TOKEN,
            },
            body: JSON.stringify(body),
        });
    }
}

async function sendFile({ to, url }) {
    if (to && to.includes('@c.us')) {
        const body = {
            phone: to,
            url: url,
        };

        try {
            const file = JSON.parse(await request.post({
                url: `${WA_BASE_URL}/files`,
                headers: {
                    'Content-Type': 'application/json',
                    'token': WA_TOKEN,
                },
                body: JSON.stringify(body),
            }));

            const newbody = {
                phone: to,
                media: { file: file[0].id, format: file[0].format, message: file[0].filename }
            };

            return await request.post({
                url: `${WA_BASE_URL}/messages`,
                headers: {
                    'Content-Type': 'application/json',
                    'token': WA_TOKEN,
                },
                body: JSON.stringify(newbody),
            });

        } catch (e) {
            // Do nothing
        }

    }
}

module.exports = { processIncomingMessages, sendMessage, sendFile };