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import { useState, useEffect, useCallback } from "react";
import Image from "next/image";
import { ImageUploadWidget } from "./ImageUploadWidget";
import { validateProductForm } from "@/lib/core";
import { clientLogger } from "@/lib/logging/clientLogger";
import { useConfirm } from "@/hooks/useConfirm";
import { useDebounce } from "@/hooks/useDebounce";
import { Button, Input } from "@/components/ui";
interface Category {
id: number;
title: string;
}
interface ProductImage {
id: number;
url: string;
thumbnailUrl: string;
order: number;
}
interface ProductFormData {
title: string;
description: string;
price: string | number;
discountedPrice: string | number;
stock: number;
categoryId: string | number;
sku: string;
images?: ProductImage[];
}
interface ProductFormProps {
productId?: number;
initialData?: ProductFormData;
onSubmit: (data: ProductFormData) => Promise<void>;
categories: Category[];
/** If true, hides the internal submit button (for external control) */
hideSubmitButton?: boolean;
/** Ref to expose form submission trigger */
submitRef?: React.MutableRefObject<(() => void) | null>;
/** Callback to report loading state changes */
onLoadingChange?: (loading: boolean) => void;
/** Callback to report validation errors */
onErrorChange?: (hasErrors: boolean) => void;
}
export const ProductForm: React.FC<ProductFormProps> = ({
productId,
initialData,
onSubmit,
categories,
hideSubmitButton = false,
submitRef,
onLoadingChange,
onErrorChange,
}) => {
const { confirm, ConfirmDialog } = useConfirm();
// Get storage key based on whether we're editing or creating
const storageKey = productId
? `product-form-edit-${productId}`
: 'product-form-new';
// Load saved data from localStorage on mount
const getSavedData = () => {
if (typeof window === 'undefined') return null;
try {
const saved = localStorage.getItem(storageKey);
return saved ? JSON.parse(saved) : null;
} catch (err) {
clientLogger.error("Failed to load saved form data", err instanceof Error ? err : new Error(String(err)));
return null;
}
};
const [formData, setFormData] = useState(() => {
// If initialData is provided (from server), use it
// Only fall back to localStorage if no initialData (for draft recovery on new products)
if (initialData) {
return {
title: initialData.title || "",
description: initialData.description || "",
price: initialData.price || "",
discountedPrice: initialData.discountedPrice || "",
stock: initialData.stock || 0,
categoryId: initialData.categoryId || "",
sku: initialData.sku || "",
};
}
const savedData = getSavedData();
return savedData || {
title: "",
description: "",
price: "",
discountedPrice: "",
stock: 0,
categoryId: "",
sku: ""};
});
const [images, setImages] = useState<ProductImage[]>(initialData?.images || []);
const [loading, setLoading] = useState(false);
const [errors, setErrors] = useState<Record<string, string>>({});
const [successMessage, setSuccessMessage] = useState("");
const [autoSaveStatus, setAutoSaveStatus] = useState<'saving' | 'saved' | null>(null);
// Debounce formData to avoid saving too frequently
const debouncedFormData = useDebounce(formData, 1000);
const handleChange = (e: React.ChangeEvent<HTMLInputElement | HTMLTextAreaElement | HTMLSelectElement>) => {
const { name, value } = e.target;
setFormData((prev: ProductFormData) => ({
...prev,
[name]: value}));
// Clear error for this field
if (errors[name]) {
setErrors((prev: Record<string, string>) => {
const newErrors = { ...prev };
delete newErrors[name];
return newErrors;
});
}
// Show saving status when user types
setAutoSaveStatus('saving');
};
// Auto-save to localStorage when debouncedFormData changes
useEffect(() => {
if (typeof window === 'undefined') return;
try {
localStorage.setItem(storageKey, JSON.stringify(debouncedFormData));
setAutoSaveStatus('saved');
// Clear saved status after 2 seconds
const timeout = setTimeout(() => {
setAutoSaveStatus(null);
}, 2000);
return () => clearTimeout(timeout);
} catch (err) {
clientLogger.error("Failed to auto-save form data", err instanceof Error ? err : new Error(String(err)));
setAutoSaveStatus(null);
}
}, [debouncedFormData, storageKey]);
const performSubmit = useCallback(async () => {
// Validate
const validation = validateProductForm(formData as unknown as Record<string, unknown>);
if (!validation.valid) {
setErrors(validation.errors);
onErrorChange?.(true);
return;
}
setLoading(true);
onLoadingChange?.(true);
setSuccessMessage("");
try {
const dataToSubmit = {
...formData,
price: parseFloat(String(formData.price)),
discountedPrice: formData.discountedPrice
? parseFloat(String(formData.discountedPrice))
: parseFloat(String(formData.price)),
categoryId: parseInt(String(formData.categoryId)),
stock: parseInt(String(formData.stock)) || 0};
await onSubmit(dataToSubmit);
// Clear auto-saved data from localStorage on successful submit
if (typeof window !== 'undefined') {
localStorage.removeItem(storageKey);
}
setSuccessMessage(
productId ? "Product updated successfully!" : "Product created successfully!"
);
setTimeout(() => setSuccessMessage(""), 3000);
onErrorChange?.(false);
} catch (err) {
const error = err instanceof Error ? err : new Error("Failed to save product");
setErrors({ submit: error.message });
onErrorChange?.(true);
} finally {
setLoading(false);
onLoadingChange?.(false);
}
}, [formData, onSubmit, productId, storageKey, onErrorChange, onLoadingChange]);
const handleSubmit = async (e: React.FormEvent) => {
e.preventDefault();
await performSubmit();
};
// Expose submit function via ref for external control
useEffect(() => {
if (submitRef) {
submitRef.current = performSubmit;
}
return () => {
if (submitRef) {
submitRef.current = null;
}
};
}, [submitRef, performSubmit]);
const handleImageDelete = async (imageId: number) => {
const confirmed = await confirm({
title: "Delete Image",
message: "Are you sure you want to delete this image? Both full-size and thumbnail versions will be removed.",
confirmText: "Delete",
cancelText: "Cancel",
variant: "danger"});
if (!confirmed) return;
try {
const response = await fetch(
`/api/admin/products/images?id=${imageId}`,
{ method: "DELETE" }
);
if (response.ok) {
setImages((prev) => prev.filter((img) => img.id !== imageId));
} else {
alert("Failed to delete image");
}
} catch (err) {
clientLogger.error("Failed to delete image", err instanceof Error ? err : new Error(String(err)));
alert("Failed to delete image");
}
};
return (
<form onSubmit={handleSubmit} className="max-w-[900px] mx-auto">
<div className="flex justify-between items-center mb-5">
{successMessage && (
<div className="text-green-800 bg-green-100 border border-green-300 rounded py-3 px-4 mb-5 text-sm border-l-4 border-l-green-500">
{successMessage}
</div>
)}
{autoSaveStatus && !successMessage && (
<div className={`py-2 px-3 rounded text-sm ml-auto ${
autoSaveStatus === 'saved'
? 'bg-green-100 text-green-800 border border-green-300'
: 'bg-yellow-100 text-yellow-700 border border-yellow-300'
}`}>
{autoSaveStatus === 'saving' ? '💾 Saving draft...' : '✓ Draft saved'}
</div>
)}
</div>
<div className="bg-white dark:bg-gray-800 p-8 md:p-5 rounded-lg mb-8 shadow-sm">
<h2 className="text-xl m-0 mb-6 text-gray-800 dark:text-gray-100 border-b-2 border-gray-100 dark:border-gray-700 pb-4">Product Details</h2>
<div className="mb-5">
<Input
label="Product Title *"
id="title"
name="title"
type="text"
value={formData.title}
onChange={handleChange}
placeholder="Enter product title"
error={errors.title}
state={errors.title ? 'error' : 'default'}
fullWidth
/>
</div>
<div className="mb-5">
<Input
as="textarea"
label="Description"
id="description"
name="description"
value={formData.description}
onChange={handleChange}
placeholder="Enter product description"
rows={4}
fullWidth
className="resize-y min-h-[100px]"
/>
</div>
<div className="grid grid-cols-2 md:grid-cols-1 gap-5">
<div className="mb-5">
<Input
label="Price *"
id="price"
name="price"
type="number"
step={0.01}
value={formData.price}
onChange={handleChange}
error={errors.price}
state={errors.price ? 'error' : 'default'}
fullWidth
/>
</div>
<div className="mb-5">
<Input
label="Discounted Price"
id="discountedPrice"
name="discountedPrice"
type="number"
step={0.01}
value={formData.discountedPrice}
onChange={handleChange}
error={errors.discountedPrice}
state={errors.discountedPrice ? 'error' : 'default'}
fullWidth
/>
</div>
</div>
<div className="grid grid-cols-2 md:grid-cols-1 gap-5">
<div className="mb-5">
<Input
label="Stock"
id="stock"
name="stock"
type="number"
value={formData.stock}
onChange={handleChange}
fullWidth
/>
</div>
<div className="mb-5">
<Input
label="SKU"
id="sku"
name="sku"
type="text"
value={formData.sku}
onChange={handleChange}
placeholder="SKU-000001"
fullWidth
/>
</div>
</div>
<div className="mb-5">
<Input
as="select"
label="Category *"
id="categoryId"
name="categoryId"
value={formData.categoryId}
onChange={handleChange}
error={errors.categoryId}
state={errors.categoryId ? 'error' : 'default'}
fullWidth
>
<option value="">Select a category</option>
{categories.map((cat) => (
<option key={cat.id} value={cat.id}>
{cat.title}
</option>
))}
</Input>
</div>
</div>
{productId && (
<div className="bg-white dark:bg-gray-800 p-8 md:p-5 rounded-lg mb-8 shadow-sm">
<h2 className="text-xl m-0 mb-6 text-gray-800 dark:text-gray-100 border-b-2 border-gray-100 dark:border-gray-700 pb-4">Product Images</h2>
<ImageUploadWidget
productId={productId}
onImageUploaded={(img) => setImages([...images, img])}
/>
{images.length > 0 && (
<div className="grid grid-cols-[repeat(auto-fill,minmax(150px,1fr))] md:grid-cols-[repeat(auto-fill,minmax(120px,1fr))] gap-4 mt-5">
{images.filter((img) => img.thumbnailUrl || img.url).map((img, index) => (
<div key={img.id ?? `img-${index}`} className="bg-white dark:bg-gray-700 border border-gray-200 dark:border-gray-600 rounded-lg overflow-hidden transition-all duration-300 hover:shadow-lg hover:border-blue-500">
<div className="w-[150px] md:w-[120px] h-[150px] md:h-[120px] overflow-hidden bg-gray-100 dark:bg-gray-600">
<Image
src={img.thumbnailUrl || img.url}
alt={`Product image ${img.id}`}
width={200}
height={200}
className="w-full h-full object-cover"
/>
</div>
<div className="p-2.5 text-center">
<p className="text-xs text-gray-500 dark:text-gray-400 m-0 mb-2 font-semibold">
Image #{img.order}
</p>
<Button
type="button"
variant="danger"
size="sm"
onClick={() => handleImageDelete(img.id)}
>
Delete
</Button>
</div>
</div>
))}
</div>
)}
{images.length === 0 && (
<div className="py-10 px-5 text-center bg-gray-50 dark:bg-gray-700 border-2 border-dashed border-gray-200 dark:border-gray-600 rounded-lg text-gray-500 dark:text-gray-400">
<p className="m-0 text-sm">No images uploaded yet. Upload at least one preview and one thumbnail image.</p>
</div>
)}
</div>
)}
{errors.submit && (
<div className="text-red-600 text-xs mt-1.5 block bg-red-50 dark:bg-red-900/30 dark:text-red-400 py-3 px-4 rounded border-l-[3px] border-red-500 mb-5">
{errors.submit}
</div>
)}
{!hideSubmitButton && (
<div className="flex gap-3 justify-end mt-8 md:flex-col">
<Button
type="submit"
variant="primary"
size="md"
loading={loading}
className="md:w-full"
>
{productId ? "Update Product" : "Create Product"}
</Button>
</div>
)}
<ConfirmDialog />
</form>
);
};
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