import { useState, useEffect } from "react";
import { motion } from "framer-motion";
import { Button } from "@/components/ui/button";
import { EVENT_INFO } from "@/data/event-data";
import heroBg from "@/assets/hero-bg.jpg";

/** Calcula diferencia entre ahora y la fecha del evento */
const getTimeLeft = (target: string) => {
  const diff = new Date(target).getTime() - Date.now();
  if (diff <= 0) return { days: 0, hours: 0, minutes: 0, seconds: 0 };
  return {
    days: Math.floor(diff / (1000 * 60 * 60 * 24)),
    hours: Math.floor((diff / (1000 * 60 * 60)) % 24),
    minutes: Math.floor((diff / (1000 * 60)) % 60),
    seconds: Math.floor((diff / 1000) % 60),
  };
};

const HeroSection = () => {
  const [timeLeft, setTimeLeft] = useState(getTimeLeft(EVENT_INFO.date));

  useEffect(() => {
    const timer = setInterval(() => {
      setTimeLeft(getTimeLeft(EVENT_INFO.date));
    }, 1000);
    return () => clearInterval(timer);
  }, []);

  const countdownItems = [
    { value: timeLeft.days, label: "Días" },
    { value: timeLeft.hours, label: "Horas" },
    { value: timeLeft.minutes, label: "Min" },
    { value: timeLeft.seconds, label: "Seg" },
  ];

  return (
    <section className="relative min-h-screen flex items-center justify-center overflow-hidden">
      {/* Background image */}
      <div
        className="absolute inset-0 bg-cover bg-center"
        style={{ backgroundImage: `url(${heroBg})` }}
      />
      {/* Overlay */}
      <div className="absolute inset-0 bg-gradient-to-b from-foreground/70 via-foreground/50 to-foreground/80" />

      <div className="relative z-10 text-center px-4 max-w-4xl mx-auto">
        <motion.p
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.2 }}
          className="text-primary font-body text-sm uppercase tracking-[0.3em] mb-4"
        >
          {EVENT_INFO.dateDisplay} · {EVENT_INFO.city}
        </motion.p>

        <motion.h1
          initial={{ opacity: 0, y: 30 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.4 }}
          className="font-display text-5xl md:text-7xl lg:text-8xl font-bold text-primary-foreground mb-4 leading-tight"
        >
          {EVENT_INFO.name}
        </motion.h1>

        <motion.p
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.6 }}
          className="text-primary-foreground/80 font-body text-lg md:text-xl mb-10"
        >
          {EVENT_INFO.subtitle}
        </motion.p>

        {/* Countdown */}
        <motion.div
          initial={{ opacity: 0, scale: 0.9 }}
          animate={{ opacity: 1, scale: 1 }}
          transition={{ delay: 0.8 }}
          className="flex justify-center gap-4 md:gap-8 mb-10"
        >
          {countdownItems.map((item) => (
            <div key={item.label} className="text-center">
              <div className="bg-primary-foreground/10 backdrop-blur-sm border border-primary-foreground/20 rounded-lg px-4 py-3 md:px-6 md:py-4 min-w-[60px] md:min-w-[80px]">
                <span className="text-2xl md:text-4xl font-display font-bold text-primary-foreground">
                  {String(item.value).padStart(2, "0")}
                </span>
              </div>
              <p className="text-primary-foreground/60 text-xs mt-2 uppercase tracking-wider">
                {item.label}
              </p>
            </div>
          ))}
        </motion.div>

        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 1 }}
        >
          <Button variant="hero" size="lg" className="text-lg px-10 py-6" asChild>
            <a href="#booking">Reservar Asiento</a>
          </Button>
        </motion.div>
      </div>
    </section>
  );
};

export default HeroSection;
