"use client";

import { CheckCircle2, ShoppingBag, TriangleAlert, Truck } from "lucide-react";
import { useState } from "react";
import { Button } from "@/components/ui/button";
import type { Product } from "@/lib/headless/types";
import { formatMoney, LOW_STOCK_THRESHOLD } from "@/lib/utils";
import { useCartStore } from "@/store/cart-store";

export function ProductPurchase({ product }: { product: Product }) {
  const [variantId, setVariantId] = useState(product.variants[0]?.id);
  const addItem = useCartStore((state) => state.addItem);
  const selectedVariant = product.variants.find((variant) => variant.id === variantId) ?? product.variants[0];
  const lowStock =
    selectedVariant?.inventoryQuantity !== null &&
    selectedVariant?.inventoryQuantity !== undefined &&
    selectedVariant.inventoryQuantity > 0 &&
    selectedVariant.inventoryQuantity <= LOW_STOCK_THRESHOLD
      ? selectedVariant.inventoryQuantity
      : null;
  return <div><div className="mb-5 flex flex-wrap gap-2">{product.variants.map((variant) => <button key={variant.id} onClick={() => setVariantId(variant.id)} className={`rounded-full border px-4 py-2 text-sm font-bold ${variantId === variant.id ? "border-fuchsia-500 bg-fuchsia-50 text-fuchsia-700" : "border-slate-200"}`}>{variant.value}</button>)}</div><div className="mb-6 flex items-end gap-3"><strong className="text-3xl font-black">{formatMoney(product.price, product.currency)}</strong>{product.compareAtPrice && <del className="text-slate-400">{formatMoney(product.compareAtPrice, product.currency)}</del>}</div><Button variant="magenta" size="lg" className="w-full" onClick={() => addItem(product, variantId)}><ShoppingBag />Añadir al carrito</Button><div className="mt-5 grid gap-3 rounded-2xl bg-slate-50 p-4 text-sm">{lowStock !== null ? <span className="flex items-center gap-2 font-bold text-amber-600"><TriangleAlert className="size-4" />Quedan {lowStock} unidades</span> : <span className="flex items-center gap-2 font-bold"><CheckCircle2 className="size-4 text-emerald-500" />Disponibilidad por confirmar</span>}<span className="flex items-center gap-2 font-bold"><Truck className="size-4 text-cyan-600" />Envíos nacionales</span></div></div>;
}