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* @file ChangeProductDetailsPage.tsx
* @description
* Edit interface for updating product details (quantity and price).
*
* **Features:**
* - Load product details from API
* - Edit quantity and price fields
* - Two-step confirmation (preview + confirmation)
* - Auto-redirect to dashboard after successful update
* - Language-aware help modal
* - Role-based dashboard navigation
*
* **Workflow:**
* 1. Load product by ID from URL params
* 2. Display current quantity and price
* 3. Allow editing both fields
* 4. Confirm changes before submitting
* 5. Redirect to dashboard after success
*
* @component
*/
import React, { useEffect, useState } from 'react';
import { useNavigate, useParams } from 'react-router-dom';
import ProductService from '../api/ProductService';
import { useTranslation } from 'react-i18next';
import HelpModal from '../components/HelpModal';
import Header from '../components/Header';
import Footer from '../components/Footer';
import '../styles/tailwindCustom.css';
/**
* Edit product details page component
* @component
* @returns {JSX.Element} Product edit form
*/
const ChangeProductDetailsPage: React.FC = () => {
const { t, i18n } = useTranslation(['translation', 'help']);
const { productId } = useParams<{ productId: string }>();
const navigate = useNavigate();
const [product, setProduct] = useState<{ id: number; name: string; quantity: number; price: number } | null>(null);
const [newQuantity, setNewQuantity] = useState<number | null>(null);
const [newPrice, setNewPrice] = useState<number | null>(null);
const [confirmation, setConfirmation] = useState(false);
const [message, setMessage] = useState('');
const [isHelpOpen, setIsHelpOpen] = useState(false);
/**
* Navigate to role-appropriate dashboard
* Admin -> /admin, User -> /user, others -> /login
*/
const navigateToDashboard = () => {
const role = localStorage.getItem('role');
if (role === 'ROLE_ADMIN') navigate('/admin');
else if (role === 'ROLE_USER') navigate('/user');
else navigate('/login');
};
// Load product details on component mount
useEffect(() => {
const fetchProductDetails = async () => {
try {
const productDetails = await ProductService.getProductById(Number(productId));
setProduct(productDetails);
setNewQuantity(productDetails.quantity);
setNewPrice(productDetails.price);
} catch (error) {
console.error(t('changeProduct.error.fetch'), error);
setMessage(t('changeProduct.errorMessage'));
}
};
fetchProductDetails();
}, [productId, t]);
// Re-render help button on language changes
useEffect(() => {
const handleLanguageChange = () => {
setIsHelpOpen((prev) => prev);
};
i18n.on('languageChanged', handleLanguageChange);
return () => {
i18n.off('languageChanged', handleLanguageChange);
};
}, [i18n]);
/**
* Submit product updates to API
* Sends separate requests for quantity and price changes
* Auto-redirects to dashboard after 1.5s on success
*/
const handleSaveChanges = async () => {
setMessage('');
try {
if (newQuantity !== null) {
await ProductService.updateProductQuantity(Number(productId), newQuantity);
}
if (newPrice !== null) {
await ProductService.updateProductPrice(Number(productId), newPrice);
}
setMessage(t('changeProduct.successMessage'));
setTimeout(() => navigateToDashboard(), 1500);
} catch (error) {
console.error(t('changeProduct.error.update'), error);
setMessage(t('changeProduct.errorMessage'));
}
setConfirmation(false);
};
/**
* Reset form to original product values and cancel
*/
const handleCancel = () => {
setNewQuantity(product?.quantity || 0);
setNewPrice(product?.price || 0);
setConfirmation(false);
setMessage(t('changeProduct.cancelMessage'));
};
Eif (!product) return <p>{t('loading')}</p>;
return (
<div className="flex flex-col min-h-screen bg-gray-100">
<Header isLoggedIn={true} onLogout={() => navigate('/login')} />
<div className="absolute top-4 left-1/2 transform -translate-x-1/2">
<button
onClick={() => setIsHelpOpen(true)}
className="button-secondary"
key={i18n.language}
>
{t('button', { ns: 'help' })}
</button>
</div>
<HelpModal isOpen={isHelpOpen} onClose={() => setIsHelpOpen(false)} pageKey="changeProduct" />
<main className="w-full max-w-2xl p-6 bg-white shadow-lg rounded mx-auto mt-6">
<h2 className="text-2xl font-bold mb-4">{product.name}</h2>
<div className="mb-4">
<label className="block font-medium mb-2">{t('changeProduct.quantityLabel')}</label>
<input
type="number"
value={newQuantity ?? product.quantity}
onChange={(e) => setNewQuantity(Number(e.target.value))}
className="input-field"
/>
</div>
<div className="mb-4">
<label className="block font-medium mb-2">{t('changeProduct.priceLabel')}</label>
<input
type="number"
step="0.01"
value={newPrice ?? product.price}
onChange={(e) => setNewPrice(parseFloat(e.target.value))}
className="input-field"
/>
</div>
<div className="flex justify-between space-x-4">
<button className="button-confirmation button-confirmation-no" onClick={handleCancel}>
{t('changeProduct.cancelButton')}
</button>
<button className="button-confirmation button-confirmation-yes" onClick={() => setConfirmation(true)}>
{t('changeProduct.saveButton')}
</button>
</div>
{confirmation && (
<div className="confirmation-box mt-4">
<p>{t('changeProduct.confirmationMessage')}</p>
<div className="flex justify-between space-x-4">
<button
className="button-confirmation button-confirmation-yes"
onClick={handleSaveChanges}
>
{t('changeProduct.confirmYes')}
</button>
<button className="button-confirmation button-confirmation-no" onClick={handleCancel}>
{t('changeProduct.confirmNo')}
</button>
</div>
</div>
)}
{message && <p className="mt-4 text-blue-500 font-semibold">{message}</p>}
</main>
<Footer />
</div>
);
};
export default ChangeProductDetailsPage;
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