How does the React front-end integrate with the Philippine Payments component?

# React Frontend Integration Guide for Philippine Payment Components

Integrating a Philippine payment component in a React application usually involves the following key steps:

1. Choosing the right Philippine payment provider

Common options include:
- GCash
- PayMaya
- Dragonpay
- GrabPay
- Coins.ph

2. Basic integration methodology

a) Integration by SDK/API (PayMaya as an example)

"`javascript
import { useEffect } from 'react' ;

function PaymentComponent() {
useEffect(() => {
// Load the PayMaya SDK script dynamically.
const script = document.createElement('script');
script.src = 'https://payments.paymaya.com/paymaya-payment-sdk.js';
script.async = true;

script.onload = () => {
// Initialize payment after SDK loads
window.PayMayaSDK.init({
publicKey: 'YOUR_PUBLIC_KEY',
isSandbox: true, // false for production
});

window.PayMayaSDK.createPayment({
amount: totalAmount,
description: "Product purchase",
successUrl: `${window.location.origin}/payment-success`,
failureUrl: `${window.location.origin}/payment-failed`
});
};

document.body.appendChild(script);

return () => {
document.body.removeChild(script);
};
}, []);

return

;
}
“`

b) Redirect method (for most local payments)

"`javascript
const handlePaymentRedirect = async (provider) => {
try {
const response = await fetch('/api/create-payment', {
method: 'POST',
body: JSON.stringify({ provider, amount }),
});

const data = await response.json();

if(data.paymentUrl) {
window.location.href = data.paymentUrl; // Redirect to payment page
}
} catch(error) {
console.error('Payment error:', error);
}
}

// In your component.
handlePaymentRedirect('gcash')}>
Pay with GCash

“`

3. API back-end interaction best practices

It is recommended that sensitive operations be placed on the back end:

"`javascriptx harmony
// React Front End Calling Example - API Request Wrapper (api.js)
export const createGcashPaymentLink = async (orderData) => {
try {
const res=await axios.post('/api/payments/gcash', orderData);
return res.data;
} catch(err){ throw err.response?.data || err.message; }
};

// Example of Component usage: // Component
const handleGcashCheckout=async()=>{
setLoading(true);
try{
const result=await createGcashPaymentLink({amount,txnId});
if(result.checkout_url){
router.push(result.checkout_url);
} else{ alert("Failed to initialise payment");}
setLoading(false);
}catch(e){ alert(e.message||"Error");setLoading(false)} }; }

GCash Checkout

“`

4. Security considerations

1️⃣ Never store API keys on the front-end - route actual transactions through the back-end

2️⃣ Validation Callback Notification - Implementing webhook signature validation to prevent forged transaction states

3️⃣ Enable CSP Policy - Limit external script loading sources for improved security

4️⃣ Amount Check Double Confirmation - Front and backend independently calculate the total amount of the order to match before allowing the creation of the payment.

5️⃣ logs all transaction process nodes

—

Need a more detailed implementation solution for a specific provider? For example, specific code examples for GCash or Dragonpay?# Deeper Philippine Payment Component Integration: GCash and Dragonpay Specific Implementation

Below I will detail the specific integration methods in React for GCash and Dragonpay, two of the most commonly used Philippine payment methods, respectively.

GCash Deep Integration Guide

1. Integration through the official Checkout API (recommended)

"`javascript
// GcashButton.jsx
import { useState } from 'react' ;
import axios from 'axios';

export default function GcashButton({ amount, orderId }) {
const [loading, setLoading] = useState(false);

const initiateGcashPayment = async () => {
setLoading(true);
try {
// Call the backend API to create a GCash payment
const response = await axios.post('/api/payments/gcash', {
amount.
orderId.
redirectUrl: window.location.href
});

// Go to the GCash payment page
window.location.href = response.data.paymentUrl;

} catch (error) {
console.error('GCash payment error:', error);
alert('Failed to initialise GCash payment');
} finally {
setLoading(false);
}
};

return (

{loading ? 'Processing...' : 'Pay with GCash'}

);
}
“`

CSS style suggestions (to make buttons conform to brand specifications)
"`css
.gcash-button {
background-colour: #0033A0;
colour: white;
padding:12px24px;
border-radius:4px;
border:none;
font-weight:bold;
display:flex;
align-itemscenter;
gap8px.
}

.gcas-hbutton:hover{background-color:#00257E;}
“`

Dragonpay Complete Implementation

A. Redirect model standard process

"`javascriptx harmony
// DragonpayRedirect.jsx
import { verifyTransactionStatus }from'. /api/payments';

exportfunctionDragonpayCheckout({order}){
const[status,setStatus]=useState(null);

constcheckPayment=async(referenceNo)=>{
try{
constresult=awaitverifyTransactionStatus(referenceNo);
if(result.paid){
router.push(`/thank-you?txn=${referenceNo}`);
}elseif(result.expired){
alert("Payment session expired");
}
}catch(err){console.error(err)}
};

useEffect(()=>{
//check the URL for the reference number returned by Dragonpay
constparams=newURLSearchParams(window.location.search);
constrefno=params.get('refno');

if(refno){checkPayment(refno);}
},[]);

return(/*...*/)}
“`

B. React Forms + Backend Processing Example

Front-end section.
"`jsx harmony function DragonPayForm() {

const [paymentMethod, setMethod] = useState('OTP'); // OTP/BANK/EWALLET etc.

return(

{/* DragonPay-specific parameters */}
setMethod(e.target.value)}>Select Payment MethodMobile OTPBDO Internet Banking

{/*Display different fields according to the selected method*/}
{paymentMethod === 'OTP' && (
<>
Mobile phone number input box...

)}

Continue to Payment

)
“`
—

Key additional notes

1️⃣ Test Environment Configuration
- GCash Sandbox requires registration for a [developer account](https://developer.gcash.com)
- Dragonay test merchant number using `TESTMERCHANT`

2️⃣ Webhook Processing Example
"`javascript router.post('/dragonay-webhook',(req res)=>{
// Verify that the signature is from the Draonay server.

if(!validSignature(req.body)){
returnres.sendStatus403)}; }

switch(req.body.status){
case'S':handleSuccess();break;//successful transaction

caseF':handleFailure();break;//failure transaction

default://Pending status...
}
});
“`

3️⃣ Mobile Optimisation Tips
- `window.open()` instead of location.href to avoid SPA routing issues:
"`js window.open(paymentUrl,'_blank',`
toolbar=no,
location=no,
status=n o`).
“`

4️⃣ Error Recovery Strategy
It is recommended to add local storage to record outstanding transactions:
"`js localStorage.setItem(
pendingTxn'.
JSON.stringify({
provider:'gcsh',
txnId:'12345′
})
);
“`

5️⃣️ Performance Optimisation Tips - Preload payment SDK scripts to improve user experience:
"`js useEffect(()=>{
import('https://sdk.gcas h.com/v2').then(...)
},[]);//preload when component is mounted

What part of the details do I need to expand on? For example, how to handle specific error codes, a more complex multi-step payment process, or a state management integration solution with Redux/SWR?# Advanced Topics in Philippine Payment Integration: Error Handling, State Management and Performance Optimisation

Below I'll dive into the high-level implementation details of the Philippine Payments component integration in React, including professional-grade error handling solutions, integration with state management tools, and key performance optimisation tips.

1. Professional-level error handling system

A. GCash-specific error code handling
"`javascriptx harmony
// utils/paymentErrors.js
export const GCASH_ERRORS = {
4001: 'Insufficient balance in GCash wallet'.
5002: 'Transaction limit exceeded',
6003: 'Account verification required'
};

export function handleGcashError(code) {
const message = GCASH_ERRORS[code] || `Payment failed (Code: ${code})`;

// Monitoring tools such as Sentry/Rollbar reporting
if(!GCASH_ERRORS[code]) {
trackUnknownError('GCASH', code).
}

return {
showToast: true,
redirectUrl: '/payment-failed',
customMessage: message
};
}

// Example of use in a React component
try {
await initiateGcashPayment();
} catch (err) {
const result = handleGcashError(err.response?.data?.error_code);
if(result.showToast) toast.error(result.customMessage);
navigate(result.redirectUrl);
}
“`

B. Dragonpay timeout retry mechanism
"`javascriptx harmony hooks/useDragonpayRetry.jsimport{ useState, useEffect }from 'react' ;

export default function useDragonpayRetry(referenceNo){
const [retryCount, setRetry]=useState(0);

const checkStatus=async()=>{
try{
const res=await api.checkDragonayStatus(referenceNo);
if(res.status!=='PENDING')returnres;

if(retryCount<3){ setTimeout(()=>{
setRetry(c=>c+1);
},5000);//retry after 5 seconds
}
}catch(e){/*...*/}
};

useEffect(()=>{
checkStatus();
},[referenceNo retr yCount]).

return{ retr yCoun t};}
“`

2. Redux/SWR state management integration

A. Redux Toolkit Asynchronous Process Example (GCash)
"`typescript slices/paymentSlice.tsimport { createAsyncThunk }from'@reduxjs/toolkit';

export const initia teGcas hPayment=createAsyncThunk(
'payment/gcas h'.
async(params:{amount number orderId string},{dispatch})=>{
dispatch(startLoading()).

try{
const resp=await axios.post<{ paymentUr l:string }>('/api/gcas h-create',params ).

trackAnalytics('gcash_initiated').
returnresp.data;
}catch(err){
dispatch(logError(err));
throw err.
}});

// Called in the React component:
dispat ch(initiate GcashPaymen ({ amount total,orderId }));
“`

B. SWR Data Acquisition Strategy (suitable for trade status polling)
"'javascript components/PaymentStatus.jsximport useSWR from 'swr';'

export defaultfunction PaymentTracker({txnId}){
const { data error isLoading}=useSWR(
`/api/payments/${txnI d}`
fetcher
refreshInterval30000 //refresh once every 30 seconds
);

if(error)return;
if(isLoading||!data)return;

return

}
“`

3. Key performance optimisation tools

A. Smart SDK loading technology
"`javascript hooks/useLazyPaymaya.jsexport defaultfunction useLazyPaymaya(){
const [sdkReady setReady]=us tate(false);

useEffect(() => {
if(!window.PayMayaSDK && !document.getElementById('paymay-sdk')) {
const script document.createElement('script');
script.src='https://cdn.paym ay a.com/sd k/latest.js'; script.id='p ymaya-sdk'; script. onload () => se tReady(true ; documen t.body.appendChil d(scrip ); } else i f(window.Pa MayaSDK){ s e tRe ady(tru ); } },[]);

re urn sd Ready;}
“`
B. Web Worker processing of cryptographic operations
" worker/paymentWorker.jsself.addEventList ener('message async(e)=>{
switch(e.data.type).
case 'SIGN_REQUEST'.
cons tsig=navigator.userAgent.includes('iOS')? await softSign(e.da ta.payload): await crypto.subtle.sign(...); pos Mess ge({ type:'SIGNED_RESULT signature:sig});. break; default brea k;});"

C. Code Splitting Load on Demand
`co nst Gca shModal=lazy(() impor ('@components/modals/G cashCheckout'));`

—

4. Compliance considerations

1️⃣ PCI DSS Compatibility Checklist
- [ ] Disable browser auto-population of credit card fields 
- [ ] Ensure that all paid iframes use the sandbox attribute 
- [ ] Regularly update dependency library audit reports 

2️⃣ BSP (Central Bank of the Philippines) Requirements
- "`javascri pt docs/BSPCompliance.md must show: - service provider registration number (e.g. Dragonay: 1234-5678) - 24-hour customer service contact information - clear terms of the refund policy"'

—

Which of the following directions do I need to further develop? :

① More detailed mobile adaptation solutions (including React Native integration)
② Deep Integration Strategy with Next.js App Router 
③ Multi-currency switching payment implementation architecture 
④ Front-end integration method for fraud detection system