import { Category } from "@/types";
import { Button } from "@/components/ui/button";
import { 
  Laptop, 
  Shirt, 
  Home, 
  Dumbbell, 
  Book, 
  Gamepad2,
  Smartphone,
  Camera,
  Headphones,
  Watch
} from "lucide-react";

interface CategoryNavProps {
  categories: Category[];
  selectedCategory: string;
  onCategorySelect: (categoryId: string) => void;
}

const getCategoryIcon = (iconName?: string) => {
  const iconMap: { [key: string]: React.ComponentType<any> } = {
    'fa-laptop': Laptop,
    'fa-tshirt': Shirt,
    'fa-home': Home,
    'fa-dumbbell': Dumbbell,
    'fa-book': Book,
    'fa-gamepad': Gamepad2,
    'fa-mobile': Smartphone,
    'fa-camera': Camera,
    'fa-headphones': Headphones,
    'fa-clock': Watch,
  };

  const IconComponent = iconName ? iconMap[iconName] || Laptop : Laptop;
  return IconComponent;
};

const getDefaultIcon = (categoryName: string) => {
  const name = categoryName.toLowerCase();
  if (name.includes('electronics') || name.includes('tech')) return Laptop;
  if (name.includes('fashion') || name.includes('clothing')) return Shirt;
  if (name.includes('home') || name.includes('furniture')) return Home;
  if (name.includes('sports') || name.includes('fitness')) return Dumbbell;
  if (name.includes('books') || name.includes('education')) return Book;
  if (name.includes('gaming') || name.includes('games')) return Gamepad2;
  if (name.includes('mobile') || name.includes('phone')) return Smartphone;
  if (name.includes('camera') || name.includes('photo')) return Camera;
  if (name.includes('audio') || name.includes('music')) return Headphones;
  if (name.includes('watch') || name.includes('time')) return Watch;
  return Laptop;
};

export default function CategoryNav({ categories, selectedCategory, onCategorySelect }: CategoryNavProps) {
  // Ensure categories is an array
  const categoryList = Array.isArray(categories) ? categories : [];
  
  return (
    <div className="w-full max-w-7xl mx-auto px-4 sm:px-6 lg:px-8" data-testid="category-nav">
      {/* Modern Pill Chips Layout */}
      <div className="flex gap-3 overflow-x-auto scrollbar-hide pb-4">
        {/* All Categories Chip */}
        <button
          className={`flex items-center gap-2 px-6 py-3 rounded-full transition-all duration-200 whitespace-nowrap ${
            selectedCategory === '' 
              ? 'bg-gradient-to-r from-orange-500 to-red-500 text-white shadow-lg ring-2 ring-orange-200' 
              : 'bg-white text-gray-700 hover:text-orange-600 shadow-sm hover:shadow-md border border-gray-200 hover:border-orange-200'
          }`}
          onClick={() => onCategorySelect('')}
          data-testid="category-all"
        >
          <Laptop className={`h-4 w-4 ${selectedCategory === '' ? 'text-white' : 'text-gray-500'}`} />
          <span className="text-sm font-semibold">All Products</span>
        </button>

        {/* Category Chips */}
        {categoryList.map((category) => {
          const IconComponent = category.icon ? getCategoryIcon(category.icon) : getDefaultIcon(category.name);
          const isSelected = selectedCategory === category.id;
          
          return (
            <button
              key={category.id}
              className={`flex items-center gap-2 px-6 py-3 rounded-full transition-all duration-200 whitespace-nowrap ${
                isSelected 
                  ? 'bg-gradient-to-r from-orange-500 to-red-500 text-white shadow-lg ring-2 ring-orange-200' 
                  : 'bg-white text-gray-700 hover:text-orange-600 shadow-sm hover:shadow-md border border-gray-200 hover:border-orange-200'
              }`}
              onClick={() => onCategorySelect(category.id)}
              data-testid={`category-${category.id}`}
            >
              <IconComponent className={`h-4 w-4 ${isSelected ? 'text-white' : 'text-gray-500'}`} />
              <span className="text-sm font-semibold">{category.name}</span>
            </button>
          );
        })}
      </div>
    </div>
  );
}