Solution for

Sending SMS when loan application's status change

What we want

Notifies users when the status of loan application changes

Problem

Listening to changes of status on applications table

Proposed solution

The service that we use is:

SpeedSMS

Input for SpeedSMS

1. to: array of numbers

2. content: SMS content

3. SMS type:

{
   "to":[
      "phone number1",
      "phone number2"
   
],
   "content":"sms content",
   "sms_type":"type of sms 
   (advertisement, brand name,...)",
   "sender":"brandname or deviceId"
}

2 - customer care

4 - sms with default brandname: Notify

4. sender: only set if sms_type = 3 or 5

3 - is sms with company's brand

5 -  is sms from Android app or personal phone number

Authorization for SpeedSMS

is Token

'Authorization': 'Basic ' + this.token

SpeedSMS Success response

{
   "status":"success",
   "code":"00",
   "data":{
      "tranId":"transaction id number",
      "totalSMS":"total sms number",
      "totalPrice":"total price number",
      "invalidPhone":"array of phone numbers"
   
}
}

1. tranId: used to further checking of status

2. totalSMS: the total number of sms has sent

3. totalPrice: the price of total sms sent

4. invalidPhone: the array of invalid phone numbers

SpeedSMS

Error response

{
   "status":"error",
   "code":"error code",
   "message":"error description"
}

1. status: the status code

2. code: the error code

3. message: the message of the error

Listening to changes

Listening to changes

Now, all applications are stored on applications collection on Firestore

We will listen to the changes of the STATUS field on all applications' documents

To do this, we use Trigger feature of Firebase

Trigger flow

STATUS of an applications' document changes

Get clientId of the document

Get get client document from clientId

Get get phoneNumber of the client

Firebase Trigger listens -> start our code

With phoneNumber of the client, we send the SMS:

"Your loan application's status has changed from X to Y"

X: the previous status of the application

Y: the updated status of the application

Demo

Solution for Sending SMS on loan application'sstatus change

By dannguyencoder

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Solution for Sending SMS on loan application'sstatus change

Solution for Sending SMS on loan application'sstatus change

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