"use client";

/**
 * Premium horizontal logo marquee.
 *
 * Setup:
 *  1. globals.css must have:
 *       @keyframes marquee {
 *         0%   { transform: translateX(0); }
 *         100% { transform: translateX(-50%); }
 *       }
 *  2. Pass clients prop or create lib/clients.ts:
 *       export const clients = [
 *         { src: "/images/clients/brand-a.png", alt: "Brand A" },
 *         ...
 *       ];
 */
import Image from "next/image";
import { useReducedMotion } from "framer-motion";

export type Client = { src: string; alt: string };

export function ClientLogoMarquee({
  clients,
  eyebrow = "Our Clients",
  title,
  subtitle,
}: {
  clients: Client[];
  eyebrow?: string;
  title: React.ReactNode;
  subtitle?: React.ReactNode;
}) {
  const reduce = useReducedMotion();
  const loop = [...clients, ...clients];

  return (
    <section className="relative overflow-hidden py-16 md:py-20 lg:py-24">
      <div
        aria-hidden
        className="pointer-events-none absolute -left-32 top-1/3 size-[480px] rounded-full radial-gold blur-3xl opacity-30"
      />
      <div className="mx-auto max-w-7xl px-6 md:px-10">
        <div className="flex flex-col items-center gap-6 text-center">
          <div className="flex items-center gap-3 text-[11px] font-medium uppercase tracking-[0.22em] text-mist">
            <span className="h-px w-8 bg-gold/40" />
            <span>{eyebrow}</span>
          </div>
          <h2 className="font-display text-4xl leading-[1.04] text-bone text-balance md:text-5xl">
            {title}
          </h2>
          {subtitle ? (
            <p className="max-w-2xl text-pretty text-mist md:text-lg">{subtitle}</p>
          ) : null}
        </div>

        <div className="relative mt-12 md:mt-14">
          {/* edge fades */}
          <div
            aria-hidden
            className="pointer-events-none absolute inset-y-0 left-0 z-10 w-16 bg-gradient-to-r from-obsidian to-transparent md:w-32"
          />
          <div
            aria-hidden
            className="pointer-events-none absolute inset-y-0 right-0 z-10 w-16 bg-gradient-to-l from-obsidian to-transparent md:w-32"
          />
          <div
            className="flex overflow-hidden"
            style={{
              maskImage:
                "linear-gradient(90deg, transparent, black 8%, black 92%, transparent)",
            }}
          >
            {reduce ? (
              <ClientGrid clients={clients} />
            ) : (
              <div
                className="flex shrink-0 gap-4 pr-4 md:gap-6 md:pr-6"
                style={{
                  animation: "marquee 50s linear infinite",
                  animationPlayState: "running",
                }}
                onMouseEnter={(e) =>
                  (e.currentTarget.style.animationPlayState = "paused")
                }
                onMouseLeave={(e) =>
                  (e.currentTarget.style.animationPlayState = "running")
                }
              >
                {loop.map((c, i) => (
                  <LogoTile key={`${c.src}-${i}`} client={c} />
                ))}
              </div>
            )}
          </div>
        </div>
      </div>
    </section>
  );
}

function LogoTile({ client }: { client: Client }) {
  return (
    <div className="group/tile relative grid h-24 w-44 shrink-0 place-items-center overflow-hidden rounded-2xl border border-bone/10 bg-graphite/40 px-5 backdrop-blur-sm transition-all duration-500 hover:border-gold/30 hover:bg-graphite/60 md:h-28 md:w-52">
      <div
        aria-hidden
        className="pointer-events-none absolute inset-0 opacity-0 transition-opacity duration-700 group-hover/tile:opacity-100"
        style={{
          background:
            "radial-gradient(60% 80% at 50% 50%, rgba(212,164,55,0.18), transparent 70%)",
        }}
      />
      <Image
        src={client.src}
        alt={client.alt}
        width={200}
        height={100}
        className="relative max-h-14 w-auto object-contain opacity-70 brightness-[1.05] contrast-[0.9] grayscale transition-all duration-500 group-hover/tile:scale-105 group-hover/tile:opacity-100 group-hover/tile:grayscale-0 md:max-h-16"
      />
    </div>
  );
}

function ClientGrid({ clients }: { clients: Client[] }) {
  return (
    <div className="grid w-full grid-cols-2 gap-4 sm:grid-cols-3 lg:grid-cols-6">
      {clients.map((c) => (
        <LogoTile key={c.src} client={c} />
      ))}
    </div>
  );
}