"use client";

import { motion, useReducedMotion } from "framer-motion";

const rainDrops = Array.from({ length: 32 }, (_, index) => ({
  left: `${(index * 29 + 7) % 101}%`,
  delay: (index % 16) * 0.08,
  duration: 0.82 + (index % 5) * 0.1,
  lengthClass: index % 3 === 0 ? "h-16" : index % 3 === 1 ? "h-12" : "h-9",
  opacity: index % 3 === 0 ? 0.46 : index % 3 === 1 ? 0.38 : 0.3,
}));

const mistDrops = Array.from({ length: 18 }, (_, index) => ({
  left: `${(index * 37 + 19) % 101}%`,
  delay: (index % 9) * 0.16,
  duration: 1.35 + (index % 4) * 0.12,
}));

const lightningBolts = [
  "left-[68%] top-[12%] h-28 rotate-[18deg]",
  "left-[76%] top-[20%] h-20 rotate-[24deg]",
];

export function WeatherEffects({ precipitation10m, thunderstorm = false }: { precipitation10m?: number | null; thunderstorm?: boolean }) {
  const reduceMotion = useReducedMotion();
  const isRaining = (precipitation10m ?? 0) > 0;

  return (
    <div aria-hidden="true" className="pointer-events-none absolute inset-0 z-[1] overflow-hidden">
      {isRaining && (
        <>
          <motion.div
            initial={{ opacity: 0 }}
            animate={{ opacity: reduceMotion ? 0.08 : [0.06, 0.1, 0.07] }}
            transition={{ duration: 3.5, repeat: Infinity, ease: "easeInOut" }}
            className="absolute inset-0 bg-foreground"
          />
          <div className="absolute inset-x-0 bottom-0 h-20 bg-foreground/5" />
          {rainDrops.map((drop, index) => (
            <motion.span
              key={`rain-${index}`}
              initial={{ y: "-18vh", opacity: 0 }}
              animate={reduceMotion ? { opacity: 0.24 } : { y: ["-18vh", "118vh"], opacity: [0, drop.opacity, 0] }}
              transition={{ duration: drop.duration, delay: drop.delay, repeat: Infinity, ease: "linear" }}
              className={`absolute -top-12 w-0.5 rotate-[10deg] rounded-full bg-foreground/55 shadow-[0_0_10px_hsl(var(--foreground)/0.16)] ${drop.lengthClass}`}
              style={{ left: drop.left }}
            />
          ))}
          {mistDrops.map((drop, index) => (
            <motion.span
              key={`mist-${index}`}
              initial={{ y: "-10vh", opacity: 0 }}
              animate={reduceMotion ? { opacity: 0.16 } : { y: ["-10vh", "112vh"], opacity: [0, 0.22, 0] }}
              transition={{ duration: drop.duration, delay: drop.delay, repeat: Infinity, ease: "linear" }}
              className="absolute -top-8 h-6 w-px rotate-[10deg] rounded-full bg-accent/45"
              style={{ left: drop.left }}
            />
          ))}
        </>
      )}
      {thunderstorm && (
        <>
          <motion.div
            animate={reduceMotion ? { opacity: 0.1 } : { opacity: [0, 0, 0.28, 0.04, 0.18, 0] }}
            transition={{ duration: 5.5, repeat: Infinity, repeatDelay: 2.2 }}
            className="absolute inset-0 bg-foreground"
          />
          {lightningBolts.map((className, index) => (
            <motion.span
              key={`lightning-${index}`}
              animate={reduceMotion ? { opacity: 0.18 } : { opacity: [0, 0, 0.72, 0, 0.34, 0] }}
              transition={{ duration: 5.5, repeat: Infinity, repeatDelay: 2.2, delay: index * 0.05 }}
              className={`absolute w-0.5 rounded-full bg-warning/75 shadow-[0_0_22px_hsl(var(--warning)/0.45)] ${className}`}
            />
          ))}
        </>
      )}
    </div>
  );
}
