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import React from 'react';
import { useParams } from 'next/navigation';
import Link from 'next/link';
import Image from 'next/image';
import { useShop } from '../context/ShopContext';
import { useToast } from '../context/ToastContext';
import { Section } from '../components/Section';
import { ArrowLeft, MessageCircle, HelpCircle, Check, Plus, X, ZoomIn } from 'lucide-react';
const ProductDetail: React.FC = () => {
const params = useParams();
const idParam = params?.id;
const id = Array.isArray(idParam) ? idParam[0] : idParam;
const { products, addToCart, cart } = useShop();
const { addToast } = useToast();
const [selectedImageIndex, setSelectedImageIndex] = React.useState(0);
const [isLightboxOpen, setIsLightboxOpen] = React.useState(false);
const [selectedColor, setSelectedColor] = React.useState<string | null>(null);
const [selectedSize, setSelectedSize] = React.useState<string | null>(null);
const product = id ? products.find(p => p.id === id) : undefined;
// Set default color when product loads
React.useEffect(() => {
Iif (product?.colors && product.colors.length > 0 && !selectedColor) {
setSelectedColor(product.colors[0].name);
}
}, [product, selectedColor]);
// Set default size when product loads
React.useEffect(() => {
Iif (product?.sizes && product.sizes.length > 0 && !selectedSize) {
setSelectedSize(product.sizes[0].name);
}
}, [product, selectedSize]);
// Ensure product has at least one image (use placeholder if empty)
const productImages = React.useMemo(() => {
if (product?.images && product.images.length > 0) {
return product.images;
}
return ['/placeholder.svg'];
}, [product?.images]);
// Carousel navigation - use useCallback to avoid recreating functions
const goToPrevious = React.useCallback(() => {
if (!product) return;
setSelectedImageIndex((prev) => (prev === 0 ? productImages.length - 1 : prev - 1));
}, [product, productImages]);
const goToNext = React.useCallback(() => {
if (!product) return;
setSelectedImageIndex((prev) => (prev === productImages.length - 1 ? 0 : prev + 1));
}, [product, productImages]);
// Keyboard navigation - ALL HOOKS MUST BE BEFORE EARLY RETURN
React.useEffect(() => {
if (!product) return; // Guard against undefined product
const handleKeyDown = (e: KeyboardEvent) => {
if (isLightboxOpen) {
if (e.key === 'Escape') setIsLightboxOpen(false);
if (e.key === 'ArrowLeft') goToPrevious();
if (e.key === 'ArrowRight') goToNext();
} else {
if (e.key === 'ArrowLeft') goToPrevious();
if (e.key === 'ArrowRight') goToNext();
}
};
window.addEventListener('keydown', handleKeyDown);
return () => window.removeEventListener('keydown', handleKeyDown);
}, [product, isLightboxOpen, goToPrevious, goToNext]);
// Prevent body scroll when lightbox is open
React.useEffect(() => {
Iif (isLightboxOpen) {
document.body.style.overflow = 'hidden';
} else {
document.body.style.overflow = 'unset';
}
return () => {
document.body.style.overflow = 'unset';
};
}, [isLightboxOpen]);
// Early return AFTER all hooks (Rules of Hooks requirement)
if (!product) {
return <Section><p className="text-center py-20 font-bold text-xl">Tuotetta ei löytynyt.</p></Section>;
}
// Get available stock (considering color and size variants)
const selectedColorVariant = product.colors?.find(c => c.name === selectedColor);
const selectedSizeVariant = product.sizes?.find(s => s.name === selectedSize);
const hasBothVariants = !!(product.colors?.length && product.sizes?.length);
const availableStock = (() => {
// Both size + color: use nested colorStocks
Iif (selectedSizeVariant?.colorStocks && selectedColor) {
return selectedSizeVariant.colorStocks.find(c => c.colorName === selectedColor)?.stock ?? 0;
}
Iif (selectedSizeVariant) return selectedSizeVariant.stock;
Iif (selectedColorVariant) return selectedColorVariant.stock;
return product.stock;
})();
// Calculate if out of stock in cart (triple-key matching)
const cartItem = cart.find(i =>
i.id === product.id &&
(!product.colors || i.selectedColor === selectedColor) &&
(!product.sizes || i.selectedSize === selectedSize)
);
const currentQty = cartItem ? cartItem.quantity : 0;
const isOutOfStock = currentQty >= availableStock;
const handleAddToCart = () => {
// Validate color selection
if (product.colors && product.colors.length > 0 && !selectedColor) {
addToast("Valitse väri", "error");
return;
}
// Validate size selection
if (product.sizes && product.sizes.length > 0 && !selectedSize) {
addToast("Valitse koko", "error");
return;
}
if (isOutOfStock) {
addToast("Maksimimäärä varastossa", "error");
return;
}
// Add to cart with selected color and size
const productWithVariants = { ...product, selectedColor: selectedColor || null, selectedSize: selectedSize || null };
addToCart(productWithVariants);
const variantInfo = [selectedColor, selectedSize].filter(Boolean).join(' / ');
addToast(`${product.name}${variantInfo ? ` (${variantInfo})` : ''} lisätty ostoskoriin!`);
};
return (
<Section variant="white" className="min-h-screen pt-8 md:pt-12">
<Link href="/kauppa" className="inline-flex items-center gap-2 text-sm font-bold text-gray-500 hover:text-black mb-8">
<ArrowLeft size={18} strokeWidth={2} /> Takaisin kauppaan
</Link>
<div className="grid grid-cols-1 lg:grid-cols-2 gap-10 lg:gap-24">
{/* Gallery */}
<div className="space-y-6">
<div
className="bg-[#f9f9f9] border border-gray-200 rounded-[2rem] overflow-hidden aspect-square shadow-sm relative group cursor-zoom-in"
onClick={() => setIsLightboxOpen(true)}
>
<Image
src={productImages[selectedImageIndex]}
alt={product.name}
fill
sizes="(max-width: 1024px) 100vw, 50vw"
className={`object-contain transition-all duration-300 p-8 ${isOutOfStock ? 'grayscale opacity-90' : ''}`}
priority
quality={90}
/>
{/* Zoom hint */}
<div className="absolute top-4 right-4 bg-white/90 p-2 rounded-full opacity-0 group-hover:opacity-100 transition-opacity pointer-events-none">
<ZoomIn size={20} className="text-gray-700" />
</div>
{isOutOfStock && availableStock > 0 && (
<div className="absolute inset-0 bg-white/50 flex items-center justify-center z-10">
<span className="bg-black text-white px-6 py-3 rounded-full font-bold uppercase tracking-widest shadow-xl">Varasto täynnä ostoskorissa</span>
</div>
)}
{/* Navigation Arrows - Only show if more than 1 image */}
{productImages.length > 1 && (
<>
<button
onClick={(e) => {
e.stopPropagation();
goToPrevious();
}}
className="absolute left-4 top-1/2 -translate-y-1/2 w-12 h-12 bg-white/90 hover:bg-black hover:text-white rounded-full flex items-center justify-center shadow-lg transition-all z-10 border border-gray-200"
aria-label="Previous image"
>
<ArrowLeft size={20} strokeWidth={2.5} />
</button>
<button
onClick={(e) => {
e.stopPropagation();
goToNext();
}}
className="absolute right-4 top-1/2 -translate-y-1/2 w-12 h-12 bg-white/90 hover:bg-black hover:text-white rounded-full flex items-center justify-center shadow-lg transition-all z-10 border border-gray-200"
aria-label="Next image"
>
<ArrowLeft size={20} strokeWidth={2.5} className="rotate-180" />
</button>
{/* Image counter */}
<div className="absolute bottom-4 left-1/2 -translate-x-1/2 bg-black/70 text-white px-4 py-2 rounded-full text-sm font-bold z-10">
{selectedImageIndex + 1} / {productImages.length}
</div>
</>
)}
</div>
{/* Thumbnails */}
{productImages.length > 1 && (
<div className="grid grid-cols-4 gap-4">
{productImages.map((img, i) => (
<button
key={i}
onClick={() => setSelectedImageIndex(i)}
className={`aspect-square rounded-2xl overflow-hidden cursor-pointer bg-white shadow-sm transition-all relative ${
i === selectedImageIndex
? 'border-2 border-black ring-2 ring-offset-2 ring-black'
: 'border border-gray-200 hover:border-black'
}`}
>
<Image
src={img}
alt={`${product.name} ${i + 1}`}
fill
sizes="(max-width: 768px) 25vw, 15vw"
className="object-contain p-2"
quality={85}
/>
</button>
))}
</div>
)}
</div>
{/* Info */}
<div className="py-2">
<div className="mb-4 flex items-center gap-3">
<span className="text-xs font-black text-gray-400 uppercase tracking-widest px-2 py-1 bg-gray-50 rounded-md border border-gray-100">
{product.category}
</span>
{availableStock > 0 ? (
<span className="text-xs font-bold text-green-600 flex items-center gap-1">
<Check size={14} strokeWidth={3} /> Varastossa ({availableStock} kpl)
</span>
) : (
<span className="text-xs font-bold text-red-500">Loppu väliaikaisesti</span>
)}
</div>
<h1 className="text-4xl md:text-6xl font-black mb-8 tracking-tighter leading-[0.95] text-black">{product.name}</h1>
<div className="flex items-center gap-6 mb-10 pb-10 border-b border-gray-200">
<div className="text-4xl font-black tracking-tight">
{product.salePrice ? (
<span className="text-red-600">{product.salePrice} € <span className="text-gray-300 text-3xl line-through font-bold ml-3">{product.price} €</span></span>
) : (
<span>{product.price} €</span>
)}
</div>
{product.isUsed && (
<span className="bg-gray-100 text-black px-5 py-2 rounded-xl text-xs font-black uppercase tracking-wider border border-gray-200">
Kunto: {product.condition}
</span>
)}
</div>
<div className="prose prose-lg text-gray-700 leading-relaxed mb-10 font-medium">
<p>{product.description}</p>
</div>
{/* Color Selector */}
{product.colors && product.colors.length > 0 && (
<div className="mb-8 pb-8 border-b border-gray-200">
<div className="mb-4">
<label className="block text-sm font-bold text-gray-900 mb-3">
Valitse väri {selectedColor && <span className="text-gray-500 font-medium">- {selectedColor}</span>}
</label>
<div className="flex flex-wrap gap-3">
{product.colors.map((color) => {
const isSelected = selectedColor === color.name;
// When both variants exist, get stock from the selected size's colorStocks
const colorStock = hasBothVariants && selectedSizeVariant?.colorStocks
? (selectedSizeVariant.colorStocks.find(c => c.colorName === color.name)?.stock ?? 0)
: color.stock;
const isColorOutOfStock = colorStock <= 0;
return (
<button
key={color.name}
onClick={() => !isColorOutOfStock && setSelectedColor(color.name)}
disabled={isColorOutOfStock}
className={`relative flex items-center gap-3 px-4 py-3 rounded-xl border-2 transition-all ${
isSelected
? 'border-black bg-gray-50 shadow-md'
: isColorOutOfStock
? 'border-gray-200 bg-gray-100 cursor-not-allowed opacity-50'
: 'border-gray-200 hover:border-gray-400 hover:bg-gray-50'
}`}
>
<div
className={`w-8 h-8 rounded-full border-2 ${
isSelected ? 'border-black' : 'border-gray-300'
}`}
style={{ backgroundColor: color.hex }}
/>
<div className="text-left">
<div className={`text-sm font-bold ${isColorOutOfStock ? 'text-gray-400' : 'text-gray-900'}`}>
{color.name}
</div>
<div className={`text-xs ${isColorOutOfStock ? 'text-red-500' : 'text-gray-500'}`}>
{isColorOutOfStock ? 'Loppu' : `${colorStock} kpl varastossa`}
</div>
</div>
{isSelected && (
<Check size={20} className="text-black absolute top-2 right-2" strokeWidth={3} />
)}
</button>
);
})}
</div>
</div>
</div>
)}
{/* Size Selector */}
{product.sizes && product.sizes.length > 0 && (
<div className="mb-8 pb-8 border-b border-gray-200">
<div className="mb-4">
<label className="block text-sm font-bold text-gray-900 mb-3">
Valitse koko {selectedSize && <span className="text-gray-500 font-medium">- {selectedSize}</span>}
</label>
<div className="flex flex-wrap gap-3">
{product.sizes.map((size) => {
const isSelected = selectedSize === size.name;
// When both variants exist, compute total stock across all colors for this size
const sizeStock = hasBothVariants && size.colorStocks
? size.colorStocks.reduce((sum, cs) => sum + cs.stock, 0)
: size.stock;
const isSizeOutOfStock = sizeStock <= 0;
return (
<button
key={size.name}
onClick={() => !isSizeOutOfStock && setSelectedSize(size.name)}
disabled={isSizeOutOfStock}
className={`relative px-6 py-3 rounded-xl border-2 transition-all ${
isSelected
? 'border-black bg-gray-50 shadow-md'
: isSizeOutOfStock
? 'border-gray-200 bg-gray-100 cursor-not-allowed opacity-50'
: 'border-gray-200 hover:border-gray-400 hover:bg-gray-50'
}`}
>
<div className="text-center">
<div className={`text-sm font-bold ${isSizeOutOfStock ? 'text-gray-400' : 'text-gray-900'}`}>
{size.name}
</div>
<div className={`text-xs ${isSizeOutOfStock ? 'text-red-500' : 'text-gray-500'}`}>
{isSizeOutOfStock ? 'Loppu' : `${sizeStock} kpl`}
</div>
</div>
{isSelected && (
<Check size={16} className="text-black absolute top-1 right-1" strokeWidth={3} />
)}
</button>
);
})}
</div>
</div>
</div>
)}
{/* Primary Actions - Stacked on Mobile, Row on Desktop */}
<div className="flex flex-col sm:flex-row gap-4 mb-8">
<button
onClick={handleAddToCart}
disabled={isOutOfStock || availableStock <= 0}
className={`flex-[2] py-5 rounded-2xl font-black text-lg md:text-xl transition-all shadow-2xl shadow-black/20 flex items-center justify-center gap-3 ${isOutOfStock || availableStock <= 0 ? 'bg-gray-100 text-gray-400 cursor-not-allowed shadow-none' : 'bg-black text-white hover:bg-gray-800 hover:-translate-y-1'}`}
>
{availableStock <= 0 ? 'LOPPU VÄLIAIKAISESTI' : isOutOfStock ? 'VARASTOSALDO TÄYNNÄ' : <><Plus size={24} strokeWidth={3} /> LISÄÄ KORIIN</>}
</button>
{/* Secondary Action: Reduce purchase anxiety */}
<Link
href="/yhteystiedot"
className="flex-1 bg-white text-black border-2 border-gray-200 py-5 rounded-2xl font-bold text-lg hover:border-black hover:bg-gray-50 transition-all flex items-center justify-center gap-2"
>
<HelpCircle size={20} strokeWidth={2.5} /> Kysy
</Link>
</div>
{/* Reassurance Note */}
<div className="bg-blue-50/50 p-6 rounded-2xl border border-blue-100 mb-12 flex gap-4 items-start">
<MessageCircle className="text-blue-600 flex-shrink-0 mt-1" size={24} />
<div>
<p className="text-sm font-bold text-gray-900 leading-relaxed">
Epävarma sopivuudesta?
</p>
<p className="text-sm text-gray-600">
Autamme mielellämme valitsemaan juuri sinulle sopivat varusteet. Asiantuntijamme ovat tavoitettavissa puhelimitse ja sähköpostilla.
</p>
</div>
</div>
{/* Specs */}
{product.specs && (
<div className="pt-8 border-t border-gray-100">
<h3 className="font-black text-lg mb-6 uppercase tracking-widest text-black">Tekniset tiedot</h3>
<dl className="grid grid-cols-1 gap-y-4 text-sm">
{Object.entries(product.specs).map(([key, val]) => (
<div key={key} className="flex justify-between py-4 border-b border-gray-100 last:border-0 hover:bg-gray-50 transition-colors px-2 rounded-lg">
<dt className="text-gray-500 font-bold uppercase tracking-wide text-xs">{key}</dt>
<dd className="font-extrabold text-black text-base">{val}</dd>
</div>
))}
</dl>
</div>
)}
</div>
</div>
{/* Lightbox Modal */}
{isLightboxOpen && (
<div
className="fixed inset-0 z-50 bg-black/95 flex items-center justify-center p-4"
onClick={() => setIsLightboxOpen(false)}
>
{/* Close button */}
<button
className="absolute top-6 right-6 w-12 h-12 bg-white/10 hover:bg-white/20 rounded-full flex items-center justify-center transition-all z-50 backdrop-blur-sm"
onClick={() => setIsLightboxOpen(false)}
aria-label="Close lightbox"
>
<X size={24} className="text-white" strokeWidth={2} />
</button>
{/* Image counter - positioned above thumbnails */}
{productImages.length > 1 && (
<div className="absolute bottom-28 left-1/2 -translate-x-1/2 bg-white/10 text-white px-6 py-3 rounded-full text-sm font-bold z-50 backdrop-blur-sm">
{selectedImageIndex + 1} / {productImages.length}
</div>
)}
{/* Navigation arrows - Only show if more than 1 image */}
{productImages.length > 1 && (
<>
<button
onClick={(e) => {
e.stopPropagation();
goToPrevious();
}}
className="absolute left-6 top-1/2 -translate-y-1/2 w-14 h-14 bg-white/10 hover:bg-white/20 rounded-full flex items-center justify-center transition-all z-50 backdrop-blur-sm"
aria-label="Previous image"
>
<ArrowLeft size={24} className="text-white" strokeWidth={2.5} />
</button>
<button
onClick={(e) => {
e.stopPropagation();
goToNext();
}}
className="absolute right-6 top-1/2 -translate-y-1/2 w-14 h-14 bg-white/10 hover:bg-white/20 rounded-full flex items-center justify-center transition-all z-50 backdrop-blur-sm"
aria-label="Next image"
>
<ArrowLeft size={24} className="text-white rotate-180" strokeWidth={2.5} />
</button>
</>
)}
{/* Main image container */}
<div
className="relative max-w-7xl max-h-[90vh] w-full h-full flex items-center justify-center"
onClick={(e) => e.stopPropagation()}
>
<div className="relative w-full h-full">
<Image
src={productImages[selectedImageIndex]}
alt={product.name}
fill
sizes="100vw"
className="object-contain"
quality={95}
priority
/>
</div>
</div>
{/* Thumbnails strip at bottom */}
{productImages.length > 1 && (
<div className="absolute bottom-6 left-1/2 -translate-x-1/2 flex gap-3 z-50 max-w-[90vw] overflow-x-auto px-4 py-2 bg-white/5 backdrop-blur-sm rounded-2xl">
{productImages.map((img, i) => (
<button
key={i}
onClick={(e) => {
e.stopPropagation();
setSelectedImageIndex(i);
}}
className={`w-16 h-16 rounded-lg overflow-hidden flex-shrink-0 transition-all relative ${
i === selectedImageIndex
? 'ring-2 ring-white ring-offset-2 ring-offset-black/50'
: 'opacity-60 hover:opacity-100'
}`}
>
<Image
src={img}
alt={`${product.name} ${i + 1}`}
fill
sizes="64px"
className="object-cover"
quality={75}
/>
</button>
))}
</div>
)}
</div>
)}
</Section>
);
};
export default ProductDetail;
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