Sperrbildschirm-Mitteilungen

import { useEffect, useRef, useState, type CSSProperties, type MouseEvent, type ReactNode } from "react";
import { AnimatePresence, motion, useMotionValue, useTransform } from "framer-motion";
import { Bell, Calendar, Image as ImageIcon, Mail, MessageCircle, Music2, type LucideIcon } from "lucide-react";

type Wallpaper = "aurora" | "sunset" | "ocean" | "light";

const spring = { type: "spring" as const, stiffness: 400, damping: 30 };

const walls: Record<Wallpaper, { base: string; blobs: string[] }> = {
  aurora: { base: "#0b0b1a", blobs: ["#5b21b6", "#2563eb", "#ec4899"] },
  sunset: { base: "#1a0b14", blobs: ["#f97316", "#f43f5e", "#8b5cf6"] },
  ocean: { base: "#031a1f", blobs: ["#06b6d4", "#3b82f6", "#10b981"] },
  light: { base: "#f8fafc", blobs: ["#fed7aa", "#ddd6fe", "#bae6fd"] },
};

const blobPositions = [
  ["-10%", "-15%"],
  ["45%", "5%"],
  ["5%", "50%"],
];

const grain = "url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E\")";

const glassCss = `
.lg-font {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", sans-serif;
  -webkit-font-smoothing: antialiased;
}
.lg-glass {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, var(--lg-a, 0.12));
  -webkit-backdrop-filter: blur(var(--lg-blur, 20px)) saturate(180%);
  backdrop-filter: blur(var(--lg-blur, 20px)) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    inset 0 -1px 0 rgba(255, 255, 255, 0.1),
    inset 0 0 20px rgba(255, 255, 255, 0.08),
    0 8px 32px rgba(0, 0, 0, 0.18);
}
/* Borde de luz */
.lg-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  padding: 1px;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.05) 40%, rgba(255, 255, 255, 0.05) 60%, rgba(255, 255, 255, 0.4));
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
}
/* Reflejo que sigue al cursor (--x / --y los pone track()) */
.lg-glass::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  pointer-events: none;
  opacity: var(--lg-hover, 0);
  transition: opacity 0.3s;
  background: radial-gradient(circle 140px at var(--x, 50%) var(--y, 0%), rgba(255, 255, 255, var(--lg-shine, 0.25)), transparent 70%);
}
.lg-glass:hover {
  --lg-hover: 1;
}
.lg-text {
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}
.lg-light .lg-text {
  color: #1d1d1f;
  text-shadow: none;
}
@keyframes lg-drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(8%, -6%) scale(1.12); }
  66% { transform: translate(-6%, 7%) scale(0.94); }
}
`;

// Guarda la posición del cursor para el reflejo de .lg-glass::after
function track(e: MouseEvent<HTMLElement>) {
  const r = e.currentTarget.getBoundingClientRect();
  e.currentTarget.style.setProperty("--x", `${e.clientX - r.left}px`);
  e.currentTarget.style.setProperty("--y", `${e.clientY - r.top}px`);
}

interface StageProps {
  bg: Wallpaper;
  blur: number;
  opacity: number;
  shine: number;
  className?: string;
  children: ReactNode;
}

// Fondo de degradado animado sobre el que se ve el cristal
function Stage({
  bg,
  blur,
  opacity,
  shine,
  className = "relative h-[560px] w-full",
  children,
}: StageProps) {
  const light = bg === "light";
  const wall = walls[bg] ?? walls.aurora;
  const vars = {
    "--lg-blur": `${blur}px`,
    "--lg-a": light ? Math.min(0.6, opacity / 100 + 0.23) : opacity / 100,
    "--lg-shine": shine / 100,
  } as CSSProperties;

  return (
    <div
      className={`lg-font overflow-hidden rounded-[22px] ${className} ${light ? "lg-light" : ""}`}
      style={vars}
    >
      <style>{glassCss}</style>
      <div className="absolute inset-0 overflow-hidden" style={{ background: wall.base }}>
        <div className="absolute inset-0" style={{ filter: "blur(60px)" }}>
          {wall.blobs.map((color, i) => (
            <div
              key={i}
              className="absolute h-[75%] w-[75%] rounded-full"
              style={{
                left: blobPositions[i]?.[0],
                top: blobPositions[i]?.[1],
                background: `radial-gradient(circle, ${color} 0%, transparent 68%)`,
                opacity: light ? 1 : 0.9,
                animation: `lg-drift 20s ease-in-out ${-i * 6}s infinite`,
              }}
            />
          ))}
        </div>
        <div
          className="absolute inset-0"
          style={{ backgroundImage: grain, opacity: 0.04, mixBlendMode: "overlay" }}
        />
      </div>
      <div className="relative grid h-full w-full grid-cols-[100%] place-items-center p-4">{children}</div>
    </div>
  );
}

type Notif = {
  id: number;
  app: string;
  color: string;
  icon: LucideIcon;
  title: string;
  text: string;
  time: string;
};

const pool: Omit<Notif, "id">[] = [
  { app: "Nachrichten", color: "linear-gradient(#5ef079,#27c24c)", icon: MessageCircle, title: "Lucía", text: "Treffen wir uns um 8 auf der Terrasse?", time: "ahora" },
  { app: "Mail", color: "linear-gradient(#5ab8ff,#1a7cf5)", icon: Mail, title: "Wochenüberblick", text: "Deine 3 Projekte sind diese Woche vorangekommen.", time: "5 min" },
  { app: "Kalender", color: "linear-gradient(#ff7a6b,#f2493a)", icon: Calendar, title: "Design · 10:30", text: "Prototyp-Review mit dem Team.", time: "20 min" },
  { app: "Musik", color: "linear-gradient(#ff6b93,#f3344f)", icon: Music2, title: "Neues Release", text: "Das Album, das du gespeichert hast, ist jetzt verfügbar.", time: "1 h" },
  { app: "Fotos", color: "linear-gradient(#ffd66b,#ff9f0a)", icon: ImageIcon, title: "Erinnerungen", text: "Heute vor einem Jahr.", time: "ahora" },
];

// La hora se fija tras montar para no desajustar el render del servidor
function useClock() {
  const [date, setDate] = useState<Date | null>(null);
  useEffect(() => {
    setDate(new Date());
    const t = setInterval(() => setDate(new Date()), 1000);
    return () => clearInterval(t);
  }, []);
  return date;
}

// Desliza a la izquierda para mostrar "Löschen"; si arrastras lejos, se borra sola
function NotifRow({ n, onDelete }: { n: Notif; onDelete: () => void }) {
  const x = useMotionValue(0);
  const deleteOpacity = useTransform(x, [-90, -30], [1, 0]);
  const Icon = n.icon;

  return (
    <div className="relative">
      <motion.button
        type="button"
        style={{ opacity: deleteOpacity }}
        onClick={onDelete}
        className="absolute inset-y-0 right-0 grid w-[84px] place-items-center rounded-[22px] bg-[#ff3b30] text-[14px] font-semibold text-white"
      >
        Löschen
      </motion.button>
      <motion.div
        drag="x"
        dragConstraints={{ left: -96, right: 0 }}
        dragElastic={0.1}
        style={{ x }}
        onDragEnd={(_, info) => {
          if (info.offset.x < -150) onDelete();
          else x.set(info.offset.x < -50 ? -96 : 0);
        }}
        onMouseMove={track}
        className="lg-glass lg-text flex items-center gap-3 rounded-[22px] p-3"
      >
        <div
          className="relative z-[3] grid h-[38px] w-[38px] shrink-0 place-items-center rounded-[10px]"
          style={{ background: n.color }}
        >
          <Icon className="h-5 w-5 text-white" strokeWidth={1.75} />
        </div>
        <div className="relative z-[3] min-w-0 flex-1">
          <div className="flex justify-between gap-2">
            <p className="truncate text-[14px] font-semibold">{n.title}</p>
            <span className="shrink-0 text-[12px] opacity-60">{n.time}</span>
          </div>
          <p className="truncate text-[13px] opacity-80">{n.text}</p>
        </div>
      </motion.div>
    </div>
  );
}

interface LockNotificationsProps {
  label?: string;
  bg?: Wallpaper;
  blur?: number;
  opacity?: number;
  shine?: number;
}

export default function LockNotifications({
  label = "Benachrichtigung erhalten",
  bg = "aurora",
  blur = 20,
  opacity = 12,
  shine = 25,
}: LockNotificationsProps) {
  const glass = { bg, blur, opacity, shine };
  const now = useClock();
  const nextId = useRef(10);
  const [list, setList] = useState<Notif[]>(() => pool.slice(0, 4).map((p, i) => ({ ...p, id: i })));
  const [open, setOpen] = useState(false);

  const time = now ? now.toLocaleTimeString("es-ES", { hour: "2-digit", minute: "2-digit" }) : "9:41";
  const date = now ? now.toLocaleDateString("es-ES", { weekday: "long", day: "numeric", month: "long" }) : "";

  const add = () => {
    const p = pool[nextId.current % pool.length];
    if (!p) return;
    setList((l) => [{ ...p, time: "ahora", id: nextId.current++ }, ...l]);
  };

  return (
    <Stage {...glass}>
      <div className="absolute inset-0 flex flex-col items-center overflow-hidden px-4 pt-8">
        <p className="lg-text text-[17px] font-medium capitalize">{date}</p>
        <p className="lg-text text-[90px] font-extralight leading-none tracking-[-0.04em] tabular-nums">{time}</p>
        <div className="mt-6 w-full max-w-[360px]">
          {open ? (
            <motion.div layout className="flex flex-col gap-2">
              <AnimatePresence initial={false}>
                {list.map((n) => (
                  <motion.div
                    key={n.id}
                    layout
                    initial={{ opacity: 0, y: -40, scale: 0.9 }}
                    animate={{ opacity: 1, y: 0, scale: 1 }}
                    exit={{ opacity: 0, x: -300, scale: 0.9 }}
                    transition={spring}
                  >
                    <NotifRow n={n} onDelete={() => setList((l) => l.filter((q) => q.id !== n.id))} />
                  </motion.div>
                ))}
              </AnimatePresence>
              {list.length > 0 && (
                <motion.button
                  type="button"
                  whileTap={{ scale: 0.95 }}
                  transition={spring}
                  onClick={() => setOpen(false)}
                  className="lg-glass lg-text mx-auto mt-1 h-8 rounded-full px-4 text-[13px] font-medium"
                >
                  <span className="relative z-[3]">Weniger anzeigen</span>
                </motion.button>
              )}
            </motion.div>
          ) : (
            // Pila cerrada: hasta 3 tarjetas, solo la primera con contenido
            <button
              type="button"
              onClick={() => setOpen(true)}
              className="relative block w-full"
              style={{ height: list.length ? 76 + Math.min(list.length - 1, 2) * 10 : 0 }}
            >
              <AnimatePresence initial={false}>
                {list.slice(0, 3).map((n, i) => (
                  <motion.div
                    key={n.id}
                    className="absolute inset-x-0 top-0"
                    style={{ zIndex: 10 - i }}
                    initial={{ y: -80, opacity: 0, scale: 1 }}
                    animate={{ y: i * 10, scale: 1 - i * 0.05, opacity: i === 0 ? 1 : 0.75 }}
                    exit={{ opacity: 0, scale: 0.9 }}
                    transition={spring}
                  >
                    <div
                      className="lg-glass lg-text flex items-center gap-3 rounded-[22px] p-3 text-left"
                      style={i ? { minHeight: 64 } : {}}
                    >
                      {i === 0 && (
                        <>
                          <div
                            className="relative z-[3] grid h-[38px] w-[38px] shrink-0 place-items-center rounded-[10px]"
                            style={{ background: n.color }}
                          >
                            <n.icon className="h-5 w-5 text-white" strokeWidth={1.75} />
                          </div>
                          <div className="relative z-[3] min-w-0 flex-1">
                            <div className="flex justify-between gap-2">
                              <p className="truncate text-[14px] font-semibold">{n.title}</p>
                              <span className="text-[12px] opacity-60">{n.time}</span>
                            </div>
                            <p className="truncate text-[13px] opacity-80">
                              {n.text}
                              {list.length > 1 ? ` · +${list.length - 1} más` : ""}
                            </p>
                          </div>
                        </>
                      )}
                    </div>
                  </motion.div>
                ))}
              </AnimatePresence>
            </button>
          )}
        </div>
        <motion.button
          type="button"
          onMouseMove={track}
          whileTap={{ scale: 0.95 }}
          transition={spring}
          onClick={add}
          className="lg-glass lg-text mb-6 mt-auto flex h-11 shrink-0 items-center gap-2 rounded-full px-5 text-[15px] font-medium"
        >
          <Bell className="relative z-[3] h-4 w-4" strokeWidth={1.75} />
          <span className="relative z-[3]">{label}</span>
        </motion.button>
      </div>
    </Stage>
  );
}