"use client";

import { useRef, useState } from "react";
import { AnimatePresence, motion } from "framer-motion";
import { CheckCircle2, HelpCircle, XCircle } from "lucide-react";
import { gsap } from "@/lib/gsap";
import { popConfetti } from "@/lib/confetti";
import { useSound } from "@/components/providers/sound-provider";
import { usePrefersReducedMotion } from "@/hooks/use-prefers-reduced-motion";

type Answer = "Ja" | "Nein";

export default function JaNeinGenerator() {
  const [question, setQuestion] = useState("");
  const [answer, setAnswer] = useState<Answer | null>(null);
  const [asking, setAsking] = useState(false);
  const [history, setHistory] = useState<Answer[]>([]);

  const cardRef = useRef<HTMLDivElement>(null);
  const { play } = useSound();
  const reduced = usePrefersReducedMotion();

  const ask = () => {
    if (asking) return;

    const pick: Answer = Math.random() < 0.5 ? "Ja" : "Nein";
    setAsking(true);
    setAnswer(null);
    play("whoosh");

    const reveal = () => {
      setAsking(false);
      setAnswer(pick);
      setHistory((h) => [pick, ...h].slice(0, 10));
      play(pick === "Ja" ? "win" : "pop");
      if (pick === "Ja") popConfetti();
    };

    if (reduced) {
      gsap.delayedCall(0.25, reveal);
      return;
    }

    const tl = gsap.timeline({ onComplete: reveal });
    tl.to(cardRef.current, {
      rotate: -6,
      x: -10,
      duration: 0.09,
      ease: "power1.inOut",
    })
      .to(cardRef.current, {
        rotate: 6,
        x: 10,
        duration: 0.09,
        ease: "power1.inOut",
      })
      .repeat(3)
      .to(cardRef.current, {
        rotate: 0,
        x: 0,
        duration: 0.2,
        ease: "power2.out",
      });
  };

  return (
    <div className="grid items-center gap-10 lg:grid-cols-[1.15fr_0.85fr]">
      {/* Bühne */}
      <div className="flex flex-col items-center">
        <input
          value={question}
          onChange={(e) => setQuestion(e.target.value)}
          maxLength={100}
          placeholder="Deine Ja/Nein-Frage (optional) …"
          aria-label="Deine Frage an den Ja-Nein-Generator"
          className="w-full max-w-sm rounded-full border border-line bg-surface px-5 py-3 text-center text-sm font-medium shadow-soft outline-none transition focus:border-primary/60 focus:ring-2 focus:ring-primary/20"
        />

        <div ref={cardRef} className="mt-8">
          <button
            type="button"
            onClick={ask}
            aria-label="Ja-Nein-Generator fragen"
            className="flex h-52 w-52 cursor-pointer items-center justify-center rounded-[2rem] border border-line bg-surface shadow-lift transition-transform duration-200 hover:scale-[1.03] active:scale-95 sm:h-60 sm:w-60"
          >
            <div
              className="relative flex h-full w-full items-center justify-center px-6"
              aria-live="polite"
            >
              <AnimatePresence mode="wait">
                {answer ? (
                  <motion.div
                    key={answer + history.length}
                    initial={{ opacity: 0, scale: 0.7 }}
                    animate={{ opacity: 1, scale: 1 }}
                    exit={{ opacity: 0, scale: 0.8 }}
                    transition={{ type: "spring", stiffness: 380, damping: 22 }}
                    className={`flex flex-col items-center gap-2 ${
                      answer === "Ja" ? "text-[#0d7a57]" : "text-clay"
                    }`}
                  >
                    {answer === "Ja" ? (
                      <CheckCircle2 className="h-14 w-14" />
                    ) : (
                      <XCircle className="h-14 w-14" />
                    )}
                    <span className="font-display text-3xl font-semibold tracking-tight">
                      {answer}
                    </span>
                  </motion.div>
                ) : (
                  <motion.div
                    key="idle"
                    initial={{ opacity: 0 }}
                    animate={{ opacity: 1 }}
                    exit={{ opacity: 0 }}
                    className="flex flex-col items-center gap-2 text-ink-soft"
                  >
                    <HelpCircle className="h-14 w-14" />
                    <span className="text-sm font-medium">Tippen zum Fragen</span>
                  </motion.div>
                )}
              </AnimatePresence>
            </div>
          </button>
        </div>

        <motion.button
          type="button"
          onClick={ask}
          disabled={asking}
          whileTap={{ scale: 0.95 }}
          className="mt-6 inline-flex cursor-pointer items-center gap-2 rounded-full bg-primary px-9 py-3.5 text-base font-semibold text-white shadow-cta transition-colors duration-200 hover:bg-primary-strong disabled:cursor-not-allowed disabled:opacity-60"
        >
          <HelpCircle className="h-5 w-5" />
          {asking ? "Überlegt …" : "Ja oder Nein?"}
        </motion.button>
        <p className="mt-3 text-xs text-ink-soft">
          {question.trim()
            ? `„${question.trim()}“`
            : "Stell eine Frage – oder lass dich einfach überraschen."}
        </p>
      </div>

      {/* Info & Verlauf */}
      <div className="space-y-5">
        <div className="rounded-3xl border border-line bg-cream/70 p-5">
          <h3 className="text-sm font-semibold uppercase tracking-[0.16em] text-ink-soft">
            So funktioniert&apos;s
          </h3>
          <p className="mt-3 text-xs leading-relaxed text-ink-soft">
            Frage eingeben (optional), auf die Karte oder den Button tippen –
            der Generator entscheidet zufällig zwischen Ja und Nein. Perfekt
            für schnelle Entscheidungen ohne langes Abwägen.
          </p>
        </div>

        {history.length > 0 && (
          <div className="rounded-3xl border border-line bg-cream/70 p-5">
            <h3 className="text-sm font-semibold uppercase tracking-[0.16em] text-ink-soft">
              Verlauf
            </h3>
            <div className="mt-3 flex flex-wrap gap-1.5">
              <AnimatePresence initial={false}>
                {history.map((entry, i) => (
                  <motion.span
                    key={`${entry}-${history.length - i}`}
                    initial={{ opacity: 0, scale: 0.6 }}
                    animate={{ opacity: 1, scale: 1 }}
                    className={`rounded-full px-3 py-1 text-xs font-semibold ${
                      i === 0
                        ? entry === "Ja"
                          ? "bg-[#0d7a57] text-white"
                          : "bg-clay text-white"
                        : "bg-surface text-ink-soft ring-1 ring-line"
                    }`}
                  >
                    {entry}
                  </motion.span>
                ))}
              </AnimatePresence>
            </div>
          </div>
        )}
      </div>
    </div>
  );
}