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index.js
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index.js
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"use strict";
const request = require('request');
const SPECIAL_CHARS = ['+', '&', '#', '%', '@', '/', ';', '=', '?', '^', '|'];
class MSG91{
/**
* Creates a new MSG91 instance
* @param {string} authKey Authentication key
*/
constructor(authKey) {
if(!authKey){
throw new Error('Without auth key we are unable to do anything dude.')
}
this.authKey = authKey;
this.opts = null;
}
/**
* Returns the base URL for MSG91 api call
* @returns {string} Base URL for MSG91 api call
*/
static getBaseURL() {
return "https://control.msg91.com/api/";
}
static validateKeys(opts) {
// check for sender id
if (!opts['sender']) {
return new Error("MSG91 Sender Id is not provided.");
}
// check for route
if (!opts['route']) {
return new Error("MSG91 route Id is not provided.");
}
// check for sms object
if (opts['sms']){
new Error("MSG91 SMS object will be needed");
}
if (!(opts['sms'] instanceof Array)) {
return new Error("MSG91 SMS object will be an array");
}
if (opts['sms'] instanceof Array && opts['sms'].length === 0) {
return new Error("MSG91 No data provided");
}
return null;
}
static isUnicodeString(str) {
for (var i = 0, n = str.length; i < n; i++) {
if (str.charCodeAt( i ) > 255) {
return true;
}
}
return false;
}
static enocodeMsgString(str) {
return SPECIAL_CHARS.some( (v) => {
return str.indexOf(v) >= 0;
})
}
static writeErrMsg(o) {
return {
status: "error",
message: (typeof o === 'string') ? o : o.msg
}
}
/**
*
* @param {*} args will be an object which contains all params
*/
send(opts) {
this.opts = opts;
return new Promise( (resolve, reject) => {
let validation = this.constructor.validateKeys(this.opts);
// fails in validation then goes inside
if (validation) {
reject(this.constructor.writeErrMsg(validation.message));
}
// cross check if message contains unicode string
let isUnicode = false;
this.opts.sms.forEach(item => {
// check for unicode
try {
isUnicode = this.constructor.isUnicodeString(item.message);
} catch (error) {}
// check for message contains special character
try {
if (this.constructor.enocodeMsgString(item.message)) {
message = encodeURIComponent(encodeURIComponent(message));
}
}catch (error) {}
});
// after unicode toll lets append value
if(isUnicode){
this.opts.unicode = 1;
}
let options = {
method: 'POST',
url: `${this.constructor.getBaseURL()}v2/sendsms`,
headers : {
authkey: this.authKey,
'content-type': 'application/json'
},
json: this.opts
};
// prepare msg and hit request
request(options, (error, response, data) => {
if (error) {
reject(error)
}
if (data && data.type === "success") {
resolve(data);
} else {
reject(data)
}
});
});
}
/**
* check balance
*/
checkBalance(route) {
return new Promise( (resolve, reject) => {
if (typeof route === "number" && !isNaN(route)) {
let options = {
method: 'GET',
url: `${this.constructor.getBaseURL()}balance.php?type=${route}&authkey=${this.authKey}`
};
// prepare msg and hit request
request(options, (error, response, data) => {
if (error) {
reject(error)
}
// purify data due to not getting json response.
data = JSON.parse(data)
if (typeof data === 'number') {
resolve({
status: "success",
message: `your balance for route ${route} is ${data}`
});
} else {
reject(this.constructor.writeErrMsg(data))
}
});
} else {
reject(this.constructor.writeErrMsg('Route number will be numeric.'))
}
})
}
}
module.exports = MSG91;