focus on
SMS Javascript and Node.js

const urlencode = require('urlencode');
var exports=module.exports={};
const urlencode = require('urlencode');
const http = require('https');
const querystring = require('querystring');
const fs = require('fs');
const pathname = require("path");
const ERROR_API = "Error during API call";
const ERROR_FILE = "The specified file does not exist";
const HOSTNAME = 'api.smsmode.com'
const PATH_SEND_SMS = "/http/1.6/sendSMS.do";
const PATH_SEND_SMS_Batch = "/http/1.6/sendSMSBatch.do";

/**
*    Function parameters:
*
*    - accessToken (required)
*    - message (required)
*    - destinataires (required): Receivers separated by a comma
*    - emetteur (optional): Allows to deal with the sms sender
*    - optionStop (optional): Deal with the STOP sms when marketing send (cf. API HTTP documentation)
*    - batchFilePath (required for batch mode): The path of CSV file for sms in Batch Mode
*/

exports.ExempleClientHttpAPI = class {

 // send SMS with GET method
 async sendSmsGet(accessToken, message, destinataires, emetteur, optionStop) {

     var finalPath = PATH_SEND_SMS + '?accessToken=' + accessToken + '&numero=' + destinataires + 
         "&message=" + urlencode(message,'ISO-8859-15') + '&emetteur=' + emetteur + '&stop=' + optionStop;
     const options = {
         hostname: HOSTNAME,
         port: 443,
         path: finalPath,
         method: 'GET'
     };
     try {
         let http_promise = this.getHttpResponse(options, "");
         let response_body = await http_promise;
         return response_body;
     }
     catch(error) {
         return ERROR_API;
     }
 }

 // send SMS with POST method
 async sendSmsPost(accessToken, message, destinataires, emetteur, optionStop) {

     var postData = querystring.stringify({
         'accessToken': accessToken, 
         'numero': destinataires, 
         'emetteur' : emetteur, 
         'stop' : optionStop 
     });
     postData = postData + "&message=" + urlencode(message,'ISO-8859-15');
     const options = {
         hostname: HOSTNAME,
         port: 443,
         path: PATH_SEND_SMS,
         method: 'POST',
         headers: {
             'Content-Type': 'application/x-www-form-urlencoded; charset=ISO-8859-15',
             'Content-Length': Buffer.byteLength(postData)
         }
     };
     try {
         let http_promise = this.getHttpResponse(options, postData);
         let response_body = await http_promise;
         return response_body;
     }
     catch(error) {
         return ERROR_API;
     }
 }

 // send SMS with POST method (Batch)
 async sendSmsBatch(accessToken, batchFilePath, optionStop) {

     var finalPath = PATH_SEND_SMS_Batch + "?accessToken=" + accessToken + "&stop=" + optionStop;
     try {
         let content_file_promise = this.getContentFile(batchFilePath);
         let content = await content_file_promise;
         var boundary = "AaB03x";
         var postData = Buffer.concat([
             Buffer.from("--" + boundary + "\r\n"),
             Buffer.from("Content-Disposition: form-data; name=\"file\"; filename=\""),
             Buffer.from(pathname.basename(batchFilePath) + "\"\r\n"),
             Buffer.from("Content-Type:text/csv\r\n\r\n"),
             Buffer.from(content),
             Buffer.from("\r\n--" + boundary + "--\r\n"),
         ]);
         var options = {
             method: 'POST',
             hostname: HOSTNAME,
             port: 443,
             path: finalPath,
             headers: {
                 "Content-Type": "multipart/form-data; boundary=" + boundary,
                 'Content-Length': Buffer.byteLength(postData)
             }
         };
         try {
         let http_promise = this.getHttpResponse(options, postData);
         let response_body = await http_promise;
         return response_body;
         }
         catch(error) {
             return ERROR_API;
         }
     }
     catch(error) {
         return ERROR_FILE;
     }
 }

 getHttpResponse(options, postData) {
     return new Promise((resolve, reject) => {
         const req = http.request(options, (res) => {
             let chunks_of_data = [];
             res.on('data', (fragments) => {
                 chunks_of_data.push(fragments);
             });
             res.on('end', () => {
                 let response_body = Buffer.concat(chunks_of_data);
                 resolve(response_body.toString());
             });
         });
         req.on('error', (error) => {
             reject(error);
         });
         req.write(postData);
         req.end();
     });
 }

 getContentFile(batchFilePath) {
     return new Promise((resolve, reject) => {
         fs.readFile(batchFilePath, async function(err, content) {
             if (err) {
                 reject(err);
             } else {
                 resolve(content);
             }
         });
     });
 }
}