import { useEffect, useRef, useState } from "react";
import { gsap } from "gsap";
import { ScrollTrigger } from "gsap/ScrollTrigger";
import {
  MessageSquare,
  ExternalLink,
  Copy,
  Check,
  Key,
  type LucideIcon,
} from "lucide-react";
import { useReducedMotion } from "../hooks/useReducedMotion";

gsap.registerPlugin(ScrollTrigger);

interface ContactItem {
  label: string;
  value: string;
  href?: string;
  isLink?: boolean;
  unavailable?: boolean;
  icon?: LucideIcon;
}

interface ContactGroup {
  category: string;
  items: ContactItem[];
}

const contacts: ContactGroup[] = [
  {
    category: "Messaging",
    items: [
      {
        label: "Simplex",
        value: "Open chat",
        href: "https://simplex.chat/contact#/?v=2-7&smp=smp%3A%2F%2FPQUV2eL0t7OStZOoAsPEV2QYWt4-xilbakvGUGOItUo%3D%40smp6.simplex.im%2F3_XOiEnk2Ebup7DqgOwGM5kXlIZX-uJo%23%2F%3Fv%3D1-4%26dh%3DMCowBQYDK2VuAyEAPJz5X-WHhJk_y1MLRxy7NTfspD-vKF0pmmi_GAJpExY%253D%26q%3Dc%26srv%3Dbylepyau3ty4czmn77q4fglvperknl4bi2eb2fdy2bh4jxtf32kf73yd.onion",
        isLink: true,
      },
      {
        label: "Discord",
        value:
          "@sysrand [1408202642588438589] / @forgecadrape [1452113626365169958]",
      },
      { label: "Telegram", value: "@forgecadrape (main) / @xorededx" },
      { label: "XMPP", value: "sw@anoxinon.me (main) / me0w@xmpp.jp" },
      {
        label: "Session",
        value:
          "056834db96cedde6012da9d5402c683c0eb260ed866da145a8f86e7f329bf77222",
      },
      {
        label: "Tox",
        value:
          "5622A2D2218AF235E39E356792270413BBE7CAEEAA531A20EEF11BF2FD10576E5050F0A55970",
      },
      { label: "Potato Chat", value: "@depoliticized" },
      {
        label: "Element",
        value: "Open profile",
        href: "https://matrix.to/#/@depoliticized:tchncs.de",
        isLink: true,
      },
      { label: "Briar", value: "temporary unavailable", unavailable: true },
    ],
  },
  {
    category: "Email",
    items: [
      {
        label: "Primary",
        value: "contact@stealer.wtf (temporary unavailable)",
        unavailable: true,
      },
    ],
  },
  {
    category: "Git",
    items: [
      {
        label: "serpent256",
        value: "View profile",
        href: "https://git.fingeri.ng/serpent256",
        isLink: true,
      },
      {
        label: "raped.cc",
        value: "View profile (main)",
        href: "https://git.fingeri.ng/raped.cc",
        isLink: true,
      },
      {
        label: "whiskers",
        value: "View org",
        href: "https://git.fingeri.ng/whiskers",
        isLink: true,
      },
    ],
  },
  {
    category: "PGP",
    items: [
      {
        label: "Public Key",
        value: "Download /pub-pgp.txt",
        href: "./pub-pgp.txt",
        isLink: true,
        icon: Key,
      },
    ],
  },
];

function CopyButton({ text }: { text: string }) {
  const [copied, setCopied] = useState(false);

  const handleCopy = async () => {
    try {
      await navigator.clipboard.writeText(text);
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    } catch {
      // Fallback
    }
  };

  return (
    <button
      onClick={handleCopy}
      className="p-1.5 rounded-md text-grey-400 hover:text-pink-brand hover:bg-pink-brand/10 transition-all"
      aria-label="Copy to clipboard"
    >
      {copied ? (
        <Check className="w-3.5 h-3.5" />
      ) : (
        <Copy className="w-3.5 h-3.5" />
      )}
    </button>
  );
}

export default function ContactSection() {
  const sectionRef = useRef<HTMLElement>(null);
  const reducedMotion = useReducedMotion();

  useEffect(() => {
    if (reducedMotion || !sectionRef.current) return;

    const ctx = gsap.context(() => {
      gsap.fromTo(
        ".contact-reveal",
        { y: 40, opacity: 0 },
        {
          y: 0,
          opacity: 1,
          duration: 0.8,
          stagger: 0.1,
          ease: "expo.out",
          scrollTrigger: {
            trigger: sectionRef.current,
            start: "top 70%",
            toggleActions: "play none none none",
          },
        },
      );
    }, sectionRef);

    return () => ctx.revert();
  }, [reducedMotion]);

  return (
    <section
      id="contact"
      ref={sectionRef}
      className="relative py-32 md:py-40 px-6 overflow-hidden"
    >
      {!reducedMotion && (
        <div className="absolute bottom-0 left-1/2 w-[800px] h-[400px] -translate-x-1/2 translate-y-1/2 rounded-full bg-pink-brand/3 blur-[120px] pointer-events-none" />
      )}

      <div className="max-w-6xl mx-auto relative z-10">
        {/* Section label */}
        <div className="contact-reveal flex items-center gap-4 mb-16">
          <span className="text-pink-brand font-mono text-xs tracking-[0.3em] uppercase">
            006
          </span>
          <div className="flex-1 h-px bg-pink-brand/20" />
          <span className="text-grey-500 font-display text-xs tracking-[0.2em] uppercase">
            Contact
          </span>
        </div>

        {/* Header */}
        <div className="contact-reveal mb-16">
          <h2 className="font-display text-4xl md:text-6xl lg:text-7xl font-light text-grey-900 mb-4">
            Get in <span className="text-gradient">touch</span>
          </h2>
          <p className="text-grey-500 text-lg font-body max-w-xl">
            Reach out through any of these channels. I prefer encrypted
            messaging when possible.
          </p>
        </div>

        {/* Contact grid */}
        <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
          {contacts.map((group) => (
            <div key={group.category} className="contact-reveal">
              <div className="flex items-center gap-2 mb-4">
                <MessageSquare className="w-4 h-4 text-pink-brand" />
                <h3 className="font-display text-sm font-medium text-grey-900 uppercase tracking-widest">
                  {group.category}
                </h3>
              </div>

              <div className="space-y-3">
                {group.items.map((item) => (
                  <div
                    key={item.label + item.value}
                    className="group flex items-center justify-between p-4 rounded-xl bg-skin-100/40 border border-pink-brand/5 hover:border-pink-brand/15 hover:bg-skin-100/70 transition-all duration-300"
                  >
                    <div className="flex-1 min-w-0">
                      <span className="text-xs font-mono text-grey-400 block mb-0.5">
                        {item.label}
                      </span>
                      {item.isLink && item.href ? (
                        <a
                          href={item.href}
                          target="_blank"
                          rel="noopener noreferrer"
                          className="inline-flex items-center gap-1.5 text-sm text-grey-700 hover:text-pink-brand transition-colors font-body"
                        >
                          {item.icon && <item.icon className="w-3.5 h-3.5" />}
                          {item.value}
                          <ExternalLink className="w-3 h-3" />
                        </a>
                      ) : item.unavailable ? (
                        <span className="text-sm italic text-red-400 font-body">
                          {item.value}
                        </span>
                      ) : (
                        <span className="text-sm text-grey-700 font-body break-all">
                          {item.value}
                        </span>
                      )}
                    </div>
                    {!item.isLink && !item.unavailable && (
                      <CopyButton text={item.value} />
                    )}
                  </div>
                ))}
              </div>
            </div>
          ))}
        </div>
      </div>
    </section>
  );
}