"use client";
import React from 'react';
import { useState, useEffect, useRef } from 'react';
import { EventCardProps } from '@/types/space';
import { useRouter } from 'next/navigation';
import { motion, AnimatePresence } from 'framer-motion';
import { LucideProps } from 'lucide-react';

export default function EventCard({ id, title, targetDate, endDate, icon }: EventCardProps) {
  const [isLive, setIsLive] = useState(false);
  const router = useRouter();
  const [timeLeft, setTimeLeft] = useState({ d: "00", h: "00", m: "00", s: "00" });

  const lastRefreshedRef = useRef<string | null>(null);

  useEffect(() => {
    const updateTimer = () => {
      if (!targetDate || !endDate) return;
      const now = new Date();
      const timeToStart = targetDate.getTime() - now.getTime();
      const timeToEnd = endDate.getTime() - now.getTime();

      if (timeToStart <= 0 && timeToEnd > 0) {
        if (!isLive) setIsLive(true); 
        return;
      }

      if (timeToEnd <= 0) {
        if (isLive) setIsLive(false);

        const passId = endDate.toISOString();

        if (lastRefreshedRef.current !== passId) {
          
          const isStaleDataFromServer = endDate.getTime() < (new Date().getTime() - 5000);
          
          if (!isStaleDataFromServer) {
            console.log("🛰️ Pass complete. Syncing with Mission Control...");
            lastRefreshedRef.current = passId;
            router.refresh();
          } else {
            console.warn("⚠️ Server returned stale ISS data. Standing by for worker update...");
            lastRefreshedRef.current = passId; 
          }
        }
        return;
      }

      const distance = timeToStart;
      const d = Math.floor(distance / (1000 * 60 * 60 * 24));
      const h = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
      const m = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
      const s = Math.floor((distance % (1000 * 60)) / 1000);

      setTimeLeft({
        d: d.toString().padStart(2, '0'),
        h: h.toString().padStart(2, '0'),
        m: m.toString().padStart(2, '0'),
        s: s.toString().padStart(2, '0')
      });
    };

    const interval = setInterval(updateTimer, 1000);
    updateTimer(); 

    return () => clearInterval(interval);
  }, [targetDate, endDate, isLive, router]);

  if (!targetDate) {
    return (
      <div className="relative p-6 rounded-xl border border-slate-800 bg-slate-900/20 backdrop-blur-md overflow-hidden opacity-60">
        <div className="flex items-center gap-4 mb-4">
          <div className="p-2 bg-slate-700/30 rounded-lg text-slate-500">
            {icon}
          </div>
          <h3 className="text-slate-500 font-mono tracking-widest uppercase text-xs">
            {title}
          </h3>
        </div>
        <div className="py-2">
          <div className="h-8 w-48 bg-slate-800 animate-pulse rounded" />
          <p className="text-[10px] text-slate-600 mt-4 font-mono uppercase tracking-widest italic">
            Waiting for orbital telemetry...
          </p>
        </div>
      </div>
    );
  }

return (
  <div className={`relative p-6 rounded-xl border transition-all duration-500 overflow-hidden h-full ${isLive ? 'border-blue-500 bg-blue-900/20 shadow-[0_0_20px_rgba(59,130,246,0.3)]' : 'border-slate-800 bg-slate-900/40'}`}>
    
    {isLive && (
      <motion.div
        initial={{ opacity: 0 }}
        animate={{ opacity: [0.1, 0.3, 0.1] }}
        transition={{ duration: 4, repeat: Infinity, ease: "easeInOut" }}
        className="absolute inset-0 bg-blue-500 pointer-events-none"
      />
    )}

    <div className="relative z-10 h-[120px] flex flex-col justify-between">
      {isLive ? (
        <div className="flex flex-col items-center justify-center h-full relative z-10">
          <motion.div 
            animate={{ 
              scale: [1, 1.3, 1],
              filter: ["drop-shadow(0 0 0px #fbbf24)", "drop-shadow(0 0 8px #fbbf24)", "drop-shadow(0 0 0px #fbbf24)"]
            }}
            transition={{ duration: 3, repeat: Infinity }}
            className="text-yellow-400 mb-3"
          >
            {React.isValidElement(icon) 
              ? React.cloneElement(icon as React.ReactElement<LucideProps>, { size: 35 }) 
              : icon}
          </motion.div>

          <h3 className="text-lg font-bold text-white text-center leading-tight">
            {id === 'iss' ? 'Look Up!' : 'Event in Progress'}
          </h3>
          
          <p className="text-blue-200 text-[14px] text-center mt-2 max-w-[220px] leading-tight opacity-90">
            {id === 'iss' 
              ? 'The ISS is directly above. Give them a wave! 👋' 
              : `The ${title} is occurring right now.`}
          </p>
        </div>
      ) : (
        <>
          <div className="flex items-center gap-4">
            <div className="p-2 bg-blue-500/10 rounded-lg text-blue-400">{icon}</div>
            <h3 className="text-slate-300 font-mono tracking-widest uppercase text-[10px] truncate">
              {title}
            </h3>
          </div>

          <div className="text-4xl font-mono text-white flex items-baseline gap-2 py-2">
            {parseInt(timeLeft.d) >= 2 ? (
              <>
                <span>{timeLeft.d}</span>
                <span className="text-slate-500 text-xl lowercase">Days</span>
              </>
            ) : (
              <div className="flex gap-1">
                <span>{timeLeft.h}</span><span className="text-slate-500">:</span>
                <span>{timeLeft.m}</span><span className="text-slate-500">:</span>
                <div className="w-[1ch] relative">
                  <AnimatePresence mode="popLayout">
                    <motion.span
                      key={timeLeft.s}
                      initial={{ opacity: 0, y: 10 }}
                      animate={{ opacity: 1, y: 0 }}
                      exit={{ opacity: 0, y: -10 }}
                      transition={{ duration: 0.3 }}
                      className="absolute"
                    >
                      {timeLeft.s}
                    </motion.span>
                  </AnimatePresence>
                </div>
              </div>
            )}
          </div>
          
          <p className="text-[10px] text-slate-500 font-mono uppercase tracking-widest leading-none">
            {id === 'iss' ? "T-Minus to Horizon" : id === 'launch' ? "T-Minus to Ignition" : id === 'moon' ? "Until Lunar Phase" : "Days to Peak Phase"}
          </p>
        </>
      )}
    </div>
  </div>
);
}