import { Metadata } from "next";
import Link from "next/link";
import { getTranslations } from "next-intl/server";
import { ChevronRight, Droplets, ArrowRight } from "lucide-react";
import Header from "@/components/layout/Header";
import Footer from "@/components/layout/Footer";
import { isValidLocale, DEFAULT_LOCALE } from "@/lib/i18n/locales";

type Params = Promise<{ locale: string }>;

export async function generateMetadata({
  params,
}: {
  params: Params;
}): Promise<Metadata> {
  const { locale } = await params;
  const validLocale = isValidLocale(locale) ? locale : DEFAULT_LOCALE;
  const t = await getTranslations({ locale: validLocale, namespace: "Solutions.Hub" });
  
  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://manoonoils.com";
  const localePrefix = validLocale === DEFAULT_LOCALE ? "/sr" : `/${validLocale}`;
  const canonicalUrl = `${baseUrl}${localePrefix}/solutions`;

  return {
    title: t("metaTitle"),
    description: t("metaDescription"),
    alternates: {
      canonical: canonicalUrl,
    },
    openGraph: {
      url: canonicalUrl,
    },
  };
}

interface CategoryCardProps {
  title: string;
  description: string;
  href: string;
  icon: React.ReactNode;
  priority?: boolean;
}

function CategoryCard({ title, description, href, icon, priority }: CategoryCardProps) {
  return (
    <Link
      href={href}
      className={`group block p-6 lg:p-8 border border-[#e5e5e5] rounded-lg hover:border-black transition-all duration-300 hover:shadow-lg ${
        priority ? "bg-gradient-to-br from-amber-50/50 to-white" : "bg-white"
      }`}
    >
      <div className="flex items-start gap-4">
        <div className={`flex-shrink-0 w-12 h-12 rounded-full flex items-center justify-center ${
          priority ? "bg-amber-100 text-amber-700" : "bg-[#f5f5f5] text-[#666666] group-hover:bg-black group-hover:text-white"
        } transition-colors`}>
          {icon}
        </div>
        <div className="flex-1 min-w-0">
          <div className="flex items-center gap-2 mb-2">
            <h3 className="text-lg font-medium text-[#1a1a1a] group-hover:text-black transition-colors">
              {title}
            </h3>
            {priority && (
              <span className="px-2 py-0.5 text-[10px] uppercase tracking-wider font-medium bg-amber-100 text-amber-700 rounded-full">
                Popular
              </span>
            )}
          </div>
          <p className="text-sm text-[#666666] leading-relaxed mb-4">
            {description}
          </p>
          <span className="inline-flex items-center text-sm font-medium text-[#1a1a1a] group-hover:text-black transition-colors">
            {priority ? "Explore Solutions" : "Learn More"}
            <ArrowRight className="ml-1 w-4 h-4 transform group-hover:translate-x-1 transition-transform" />
          </span>
        </div>
      </div>
    </Link>
  );
}

interface QuickLinkProps {
  title: string;
  href: string;
  count?: number;
}

function QuickLink({ title, href, count }: QuickLinkProps) {
  return (
    <Link
      href={href}
      className="flex items-center justify-between p-4 border-b border-[#e5e5e5] hover:bg-[#fafafa] transition-colors group"
    >
      <span className="text-[#1a1a1a] group-hover:text-black transition-colors">
        {title}
      </span>
      <div className="flex items-center gap-2">
        {count !== undefined && (
          <span className="text-xs text-[#999999]">{count} solutions</span>
        )}
        <ChevronRight className="w-4 h-4 text-[#999999] group-hover:text-black transition-colors" />
      </div>
    </Link>
  );
}

export default async function SolutionsHubPage({
  params,
}: {
  params: Params;
}) {
  const { locale } = await params;
  const t = await getTranslations({ locale, namespace: "Solutions" });
  const hubT = await getTranslations({ locale, namespace: "Solutions.Hub" });

  const categories = [
    {
      title: hubT("categories.oilForConcern.title"),
      description: hubT("categories.oilForConcern.description"),
      href: `/${locale}/solutions/by-concern`,
      icon: <Droplets className="w-5 h-5" />,
      priority: true,
    },
  ];

  return (
    <>
      <Header locale={locale} hideLangSwitcher={true} />
      <div className="min-h-screen bg-white">
        <section className="pt-32 pb-16 lg:pt-40 lg:pb-24">
          <div className="container">
            <nav className="flex items-center gap-2 text-sm text-[#666666] mb-8">
              <Link href={`/${locale}`} className="hover:text-black transition-colors">
                {t("breadcrumb.home")}
              </Link>
              <ChevronRight className="w-4 h-4" />
              <span className="text-[#1a1a1a]">{t("breadcrumb.solutions")}</span>
            </nav>

            <div className="max-w-3xl">
              <h1 className="text-4xl lg:text-5xl font-medium tracking-tight text-[#1a1a1a] mb-6">
                {hubT("title")}
              </h1>
              <p className="text-lg text-[#666666] leading-relaxed">
                {hubT("subtitle")}
              </p>
            </div>
          </div>
        </section>

        <section className="pb-16 lg:pb-24">
          <div className="container">
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4 lg:gap-6">
              {categories.map((category) => (
                <CategoryCard key={category.href} {...category} />
              ))}
            </div>
          </div>
        </section>

        <section className="pb-16 lg:pb-24">
          <div className="container">
            <div className="grid grid-cols-1 lg:grid-cols-2 gap-8 lg:gap-12">
              <div className="border border-[#e5e5e5] rounded-lg overflow-hidden">
                <div className="p-6 bg-[#fafafa] border-b border-[#e5e5e5]">
                  <h2 className="text-lg font-medium text-[#1a1a1a]">
                    {hubT("quickAccess.byConcern")}
                  </h2>
                  <p className="text-sm text-[#666666] mt-1">
                    {hubT("quickAccess.byConcernDesc")}
                  </p>
                </div>
                <div className="divide-y divide-[#e5e5e5]">
                  <QuickLink
                    title={hubT("quickAccess.links.viewAll")}
                    href={`/${locale}/solutions/by-concern`}
                  />
                </div>
              </div>

              <div className="border border-[#e5e5e5] rounded-lg overflow-hidden">
                <div className="p-6 bg-[#fafafa] border-b border-[#e5e5e5]">
                  <h2 className="text-lg font-medium text-[#1a1a1a]">
                    {hubT("quickAccess.byOil")}
                  </h2>
                  <p className="text-sm text-[#666666] mt-1">
                    {hubT("quickAccess.byOilDesc")}
                  </p>
                </div>
                <div className="divide-y divide-[#e5e5e5]">
                  <QuickLink
                    title={hubT("quickAccess.links.viewAll")}
                    href={`/${locale}/solutions/by-oil`}
                  />
                </div>
              </div>
            </div>
          </div>
        </section>

        <section className="pb-16 lg:pb-24">
          <div className="container">
            <div className="bg-[#1a1a1a] rounded-2xl p-8 lg:p-12 text-center">
              <h2 className="text-2xl lg:text-3xl font-medium text-white mb-4">
                {hubT("cta.title")}
              </h2>
              <p className="text-[#999999] max-w-xl mx-auto mb-8">
                {hubT("cta.description")}
              </p>
              <Link
                href={`/${locale}/products`}
                className="inline-flex items-center justify-center px-8 py-3 bg-white text-[#1a1a1a] font-medium rounded-full hover:bg-[#f5f5f5] transition-colors"
              >
                {hubT("cta.button")}
              </Link>
            </div>
          </div>
        </section>
      </div>
      <Footer locale={locale} />
    </>
  );
}