vue-interswitch

Interswitch for Vue 3.x

Interswitch community vue package that integrates with vue apps for Quickteller Business for recieve payments online.

Note: You need a Quickteller Business to obtain the required code/keys.

Installation

To install, run:

npm install vue-interswitch

Usage

This package has two ways of integrating with vue project - as compenent and plugin

As Component

Below are the various implementations using options or composition api

// COMPOSITION API with defineComponent (Typescipt)
<script lang="ts">
import Interswitch from 'vue-interswitch';
import {defineComponent} from "vue"
export default defineComponent({
  components: {
    Interswitch
  },
  setup(){
    
    const onCallback = (response)=>{
      console.log(response)
    }
    return {onCallback}
  }
});
</script>

// COMPOSITION API 2 (Typescipt)

<script lang="ts" setup>
    import Interswitch from 'vue-interswitch';
    const onCallback = (response)=>{
      console.log(response)
    }
  
</script>

// OPTIONS API

<script>
    import Interswitch from 'vue-interswitch';
    export default {
        components: {
            Interswitch
        },
        methods: {
            onCallback(response){
                console.log(response)
            }
        }
    }
</script>

The template will look as seen below

<template>
  <main>
      <Interswitch  
        merchantCode='MX26070'
        payItemID='Default_Payable_MX26070'
        customerEmail='[e-mail]'
        redirectURL="http://localhost:3000"
        text="Pay Now"
        mode='TEST'
        :transactionReference="Date.now().toString()" 
        :amount="100" 
        class="custom, bootstrap or tailwind class here"
        :callback="onCallback"
    />
  </main>
  // Note that amount should be the actuall amount, assen if payment is 1,000 enter 1000 as the amount, the module automatically multiplies the amount by 100 so as to meet the requirement of "amount should be in kobo"


</template> 

Handle Error Event

To handle errors, an event is emitted when there is an error, hence binding an function to handle the error and get the error message or error stack trace (for debug=true mode only). Below is a guide

Note: to get dev level error with stack trace set debug=true on the <Interswitch :debug="true" /> component then bind a function to the emitter event

    /**
     * In your template
     * debug=true mode is not needed for production
     * the error message is automatically 
     * "Payment failed! check network and try again"
     * 
     * */
    <Interswitch :debug="true" @error="onError" />

    //within your script
    const onError = (err) => { //composition api
      console.log(err)
    }

    //do accordingly for options api

As Plugin

vue-interswitch package exposes a plugin isw. The plugin can be imported in main.(ts|js) as seen below

import { createApp } from 'vue'
import App from './App.vue';
import {isw} from "vue-interswitch"; // here

const app = createApp(App);
app.use(isw) //here 

app.mount('#app')

According to vue documentation when creating custom plugin, they have to be provided with app.provide(key, value) and then injected into app component using inject(key), hence, in your component inject iswcheckout. see below

<script setup lang="ts">
import { inject } from 'vue'

// make sure to cast iswcheckout as any to avoid 'This expression is not callable' error
const iswcheckout: any = inject('iswcheckout')

const MakePayment = () => {
  const props = {
      merchantCode: 'MX93271',
      payItemID: 'Default_Payable_MX93271',
      customerEmail: '[e-mail]',
      redirectURL: 'http://localhost:3000',
      text: 'Pay Now',
      mode: 'TEST',
      transactionReference: Date.now().toString(),
      amount: 100, //there is no automatic multiplication here.....manually multiply amount with 100
      callback: (response: any) => {
        console.log('response: ', response)
      }
  }

  iswcheckout(props)
}
</script>

Note:

• debug=true is not needed for production as debug is automatically false if not included.
• merchantCode and payItemID can be gotten on your Quickteller Business dashboard
• amount must be in kobo Hence, that has been handled (with exception of the plugin approach), every amount provided is automatically multiplied by 100 within library logic

Parameters

Below is a list of all the Interswitch official supported parameters.

Parameters	Data Type	Required	Description
merchantCode	string	true	This can be found on your dashboard.
payItemID	string	true	This can be found on your dashboard.
customerEmail	string	true	The email of the person making the payment.
amount	string	true	The cost of the item being paid for in kobo.
transactionReference	string	true	This is a unique reference string required for every transaction. You can create a method to generate this.
text	string	true	This represents the text on the payment button.
mode	string	true	This represents your integration mode. It can be 'TEST' or 'LIVE'.
callback	function	true	This function is called after every transaction.
redirectURL	string	false	The url you want the user to be redirected to after a transaction.
currency	string	false	The ISO code of the currency being used. If this field is not added, the currency naira is assumed.
customerName	string	false	The name of the person making the payment.
customerID	string	false	The ID of the person making the payment.
customerMobileNo	string	false	The mobile number of the person making the payment.
payItemName	string	false	The name of the item being paid for.
className	string	false	You can use this to add a CSS class to the payment button.
style	object	false	You can use this to add inline styles to the payment button.

Response Sample

After a transaction, a sample response from the callback function will be like so:

{
    bpTrxnRef: "",
    bpResp: "",
    rechPin: "",
    amount: 10000,
    apprAmt: 10000,
    cardNum: "",
    desc: "Approved by Financial Institution",
    mac: "",
    payRef: "FBN|WEB|MX26070|13-04-2021|3512130|866194",
    resp: "00",
    retRef: "000106923853",
    txnref: "1618305656700",
    url: "http://localhost:3000",
}

if within your response, desc messsage reads MERCHANT_OR_PAYMENT_ITEM_DOES_NOT_EXIST and other fields shows undefined it implies information supplied might not be correct.

Extra Library Parameters

Below is a list of all the Interswitch official supported parameters.

Parameters	Data Type	Required	Description
text	string	true	It specifies the text to display on the button.
debug	boolean	false	Helps to show raw stack trace error for development purposes
disableAutoKobo	boolean	false	it is optional and it specifies if automatic multiplication of amount should apply or note. It is false by default. setting disableAutoKobo=true will allow developer to manually multiply amount with 100 for kobo

NOTE: The key 'resp' gives the final status of the transaction.
There are quite a number of response codes that can be returned, the full list can be viewed here

- Handling the Response

For integrity purpose, you are advised to make a server side request to get the final status of a transaction before giving value. To do this, make a post request to the endpoint below:

Test mode:

https://qa.interswitchng.com/collections/api/v1/gettransaction.json?merchantcode={MERCHANT_CODE}&transactionreference={TRANSACTION_REFERENCE}&amount={AMOUNT_IN_KOBO}

Live mode:

https://webpay.interswitchng.com/collections/api/v1/gettransaction.json?merchantcode={MERCHANT_CODE}&transactionreference={TRANSACTION_REFERENCE}&amount={AMOUNT_IN_KOBO}

License

The MIT License (MIT). Please see License File for more information.