components/ProductGrid.jsx

import React, { useState, useEffect } from 'react';
import { 
  Plus, 
  Minus, 
  ShoppingBag, 
  Heart, 
  Search,
  Filter,
  Grid,
  List
} from 'lucide-react';

const ProductGrid = ({ 
  products, 
  activeCategory, 
  onAddToCart,
  onProductClick
}) => {
  const [searchQuery, setSearchQuery] = useState('');
  const [gridView, setGridView] = useState(true);
  const [filteredProducts, setFilteredProducts] = useState([]);
  
  useEffect(() => {
    let result = products;
    
    // Filter by category
    if (activeCategory !== 'all') {
      result = result.filter(product => product.category === activeCategory);
    }
    
    // Filter by search query
    if (searchQuery) {
      result = result.filter(product => 
        product.name.toLowerCase().includes(searchQuery.toLowerCase()) ||
        product.description.toLowerCase().includes(searchQuery.toLowerCase())
      );
    }
    
    setFilteredProducts(result);
  }, [products, activeCategory, searchQuery]);
  
  const formatPrice = (price) => {
    return new Intl.NumberFormat('th-TH', {
      style: 'currency',
      currency: 'THB'
    }).format(price);
  };

  return (
    <div className="flex-1 overflow-y-auto p-4">
      {/* Search and Filter */}
      <div className="mb-6 space-y-4">
        <div className="flex flex-col sm:flex-row gap-4">
          <div className="relative flex-1">
            <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-pos-text-secondary w-5 h-5" />
            <input
              type="text"
              placeholder="ค้นหาสินค้า..."
              value={searchQuery}
              onChange={(e) => setSearchQuery(e.target.value)}
              className="w-full pl-10 pr-4 py-3 rounded-xl border border-pos-border focus:ring-2 focus:ring-primary-500 focus:border-transparent outline-none transition-all"
            />
          </div>
          
          <div className="flex gap-2">
            <button 
              onClick={() => setGridView(true)}
              className={`p-3 rounded-xl border ${gridView 
                ? 'bg-primary-600 text-white border-primary-600' 
                : 'border-pos-border text-pos-text-secondary hover:bg-pos-bg'}`}
            >
              <Grid className="w-5 h-5" />
            </button>
            <button 
              onClick={() => setGridView(false)}
              className={`p-3 rounded-xl border ${!gridView 
                ? 'bg-primary-600 text-white border-primary-600' 
                : 'border-pos-border text-pos-text-secondary hover:bg-pos-bg'}`}
            >
              <List className="w-5 h-5" />
            </button>
            <button className="p-3 rounded-xl border border-pos-border text-pos-text-secondary hover:bg-pos-bg">
              <Filter className="w-5 h-5" />
            </button>
          </div>
        </div>
      </div>

      {/* Products */}
      <div className={gridView ? "grid grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-4" : "space-y-3"}>
        {filteredProducts.length > 0 ? (
          filteredProducts.map((product) => (
            <div 
              key={product.id}
              onClick={() => onProductClick(product)}
              className="group bg-white rounded-2xl border border-pos-border overflow-hidden hover:shadow-xl transition-all duration-300 hover:border-primary-200 cursor-pointer"
            >
              <div className="relative aspect-square overflow-hidden">
                <img 
                  src={product.image} 
                  alt={product.name}
                  className="w-full h-full object-cover group-hover:scale-110 transition-transform duration-300"
                />
                <div className="absolute top-2 right-2">
                  <button className="p-2 bg-white/90 rounded-full hover:bg-white shadow-sm transition-colors">
                    <Heart className="w-4 h-4 text-red-500" />
                  </button>
                </div>
                {product.discount > 0 && (
                  <div className="absolute top-2 left-2 bg-danger text-white px-2 py-1 rounded-lg text-xs font-bold">
                    -{product.discount}%
                  </div>
                )}
                <div className="absolute bottom-0 left-0 right-0 bg-gradient-to-t from-black/60 to-transparent p-4">
                  <p className="text-white text-xs font-medium">{product.categoryName}</p>
                </div>
              </div>
              
              <div className="p-3">
                <h3 className="font-bold text-pos-text mb-1 truncate">{product.name}</h3>
                <div className="flex justify-between items-center">
                  <div className="flex flex-col">
                    {product.discount > 0 ? (
                      <>
                        <span className="text-xs text-pos-text-secondary line-through">
                          {formatPrice(product.price)}
                        </span>
                        <span className="text-lg font-bold text-primary-600">
                          {formatPrice(product.price * (1 - product.discount/100))}
                        </span>
                      </>
                    ) : (
                      <span className="text-lg font-bold text-pos-text">
                        {formatPrice(product.price)}
                      </span>
                    )}
                  </div>
                  <button 
                    onClick={(e) => {
                      e.stopPropagation();
                      onAddToCart(product);

                    className="p-2 bg-primary-50 text-primary-600 rounded-xl hover:bg-primary-600 hover:text-white transition-colors"
                  >
                    <ShoppingBag className="w-5 h-5" />
                  </button>
                </div>
              </div>
            </div>
          ))
        ) : (
          <div className="col-span-full py-12 text-center">
            <div className="w-20 h-20 bg-pos-bg rounded-full flex items-center justify-center mx-auto mb-4">
              <Search className="w-10 h-10 text-pos-text-secondary" />
            </div>
            <h3 className="text-lg font-medium text-pos-text mb-2">ไม่พบสินค้า</h3>
            <p className="text-pos-text-secondary">
              {searchQuery 
                ? `ไม่พบผลลัพธ์สำหรับ "${searchQuery}"` 
                : "โปรดเลือกหมวดหมู่หรือลองค้นหาใหม่"}
            </p>
          </div>
        )}
      </div>
      
      {/* Product count */}
      <div className="mt-4 text-center">
        <p className="text-sm text-pos-text-secondary">
          แสดง {filteredProducts.length} ของ {products.length} ผลิตภัณฑ์
        </p>
      </div>
    </div>
  );
};

export default ProductGrid;