import React, { useRef, useState, useCallback } from 'react';
import { cn } from '../../utils';

interface TiltCardProps extends React.HTMLAttributes<HTMLDivElement> {
  children: React.ReactNode;
  glow?: boolean;
  tiltMax?: number;
}

export const TiltCard = React.forwardRef<HTMLDivElement, TiltCardProps>(
  ({ className, children, glow = false, tiltMax = 14, style, ...props }, _ref) => {
    const cardRef = useRef<HTMLDivElement>(null);
    const frameRef = useRef<number>(0);

    const [tilt, setTilt] = useState({ rotX: 0, rotY: 0, scale: 1 });
    const [glare, setGlare] = useState({ x: 50, y: 50, opacity: 0 });
    // normalized -1..1 mouse position for the border gradient
    const [border, setBorder] = useState({ x: 0.5, y: 0.5, opacity: 0 });

    const handleMouseMove = useCallback((e: React.MouseEvent<HTMLDivElement>) => {
      const card = cardRef.current;
      if (!card) return;
      const rect = card.getBoundingClientRect();
      const x = e.clientX - rect.left;
      const y = e.clientY - rect.top;
      const nx = x / rect.width;   // 0..1
      const ny = y / rect.height;

      cancelAnimationFrame(frameRef.current);
      frameRef.current = requestAnimationFrame(() => {
        setTilt({
          rotX: -(ny - 0.5) * tiltMax * 2,
          rotY: (nx - 0.5) * tiltMax * 2,
          scale: 1.03,
        });
        setGlare({ x: nx * 100, y: ny * 100, opacity: 0.2 });
        setBorder({ x: nx, y: ny, opacity: 1 });
      });
    }, [tiltMax]);

    const handleMouseLeave = useCallback(() => {
      cancelAnimationFrame(frameRef.current);
      setTilt({ rotX: 0, rotY: 0, scale: 1 });
      setGlare(g => ({ ...g, opacity: 0 }));
      setBorder(b => ({ ...b, opacity: 0 }));
    }, []);

    const isResting = tilt.rotX === 0 && tilt.rotY === 0;

    // Dynamic border: a conic gradient anchored to mouse position
    const borderAngle = Math.atan2(border.y - 0.5, border.x - 0.5) * (180 / Math.PI) + 90;

    return (
      <div
        ref={cardRef}
        onMouseMove={handleMouseMove}
        onMouseLeave={handleMouseLeave}
        style={{
          ...style,
          transform: `perspective(900px) rotateX(${tilt.rotX}deg) rotateY(${tilt.rotY}deg) scale3d(${tilt.scale},${tilt.scale},${tilt.scale})`,
          transition: isResting
            ? 'transform 0.55s cubic-bezier(.03,.98,.52,.99), box-shadow 0.55s ease'
            : 'transform 0.08s linear',
          willChange: 'transform',
          transformStyle: 'preserve-3d',
          // Glow box shadow that intensifies on hover
          boxShadow: border.opacity
            ? `0 0 40px -8px hsla(${220 + border.x * 40},80%,60%,0.35), 0 20px 80px -20px hsla(260,80%,50%,0.2)`
            : '0 0 0 0 transparent',
        }}
        className={cn(
          'relative rounded-3xl overflow-hidden group',
          className
        )}
        {...props}
      >
        {/* Animated neon border */}
        <div
          className="absolute inset-0 rounded-3xl transition-opacity duration-300 pointer-events-none"
          style={{
            opacity: border.opacity * 0.9,
            padding: '1px',
            background: `conic-gradient(
              from ${borderAngle}deg at ${border.x * 100}% ${border.y * 100}%,
              hsla(220,90%,65%,0) 0deg,
              hsla(220,90%,65%,0.9) 60deg,
              hsla(270,90%,70%,0.6) 120deg,
              hsla(190,90%,65%,0.8) 180deg,
              hsla(220,90%,65%,0) 240deg
            )`,
            WebkitMask: 'linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0)',
            WebkitMaskComposite: 'xor',
            maskComposite: 'exclude',
          }}
        />

        {/* Card body */}
        <div className={cn(
          'absolute inset-[1px] rounded-3xl',
          'bg-surface/50 backdrop-blur-lg border border-white/5 group-hover:border-white/10 transition-colors duration-300',
          glow && 'glow-effect',
        )} />

        {/* Glare highlight */}
        <div
          className="absolute inset-0 rounded-3xl pointer-events-none transition-opacity duration-300"
          style={{
            opacity: glare.opacity,
            background: `radial-gradient(circle at ${glare.x}% ${glare.y}%, rgba(255,255,255,0.18) 0%, transparent 65%)`,
          }}
        />

        {/* Laser shimmer sweep on hover */}
        <div className="absolute inset-0 rounded-3xl pointer-events-none overflow-hidden">
          <div
            className="absolute inset-0 opacity-0 group-hover:opacity-100 transition-opacity duration-500"
            style={{
              background: `linear-gradient(105deg, transparent 30%, rgba(255,255,255,0.06) 50%, transparent 70%)`,
              animation: 'shimmer-sweep 2s ease-in-out infinite',
            }}
          />
        </div>

        {/* Content — slight Z lift for depth */}
        <div
          className="relative p-6 md:p-8"
          style={{ transform: 'translateZ(20px)', transformStyle: 'preserve-3d' }}
        >
          {children}
        </div>
      </div>
    );
  }
);

TiltCard.displayName = 'TiltCard';