"use client";

import React from "react";
import { cn } from "../../lib/utils";
import { motion } from "framer-motion";

export interface AnimatedBlobBackgroundProps {
  /**
   * Additional class name for the background container
   */
  className?: string;
  /**
   * Custom styles for the background container
   */
  style?: React.CSSProperties;
  /**
   * The amount of blur applied to the blobs (in pixels or viewport units)
   */
  blurAmount?: string;
  /**
   * Array of colors for the first blob gradient
   */
  firstBlobColors?: string[];
  /**
   * Array of colors for the second blob gradient
   */
  secondBlobColors?: string[];
  /**
   * Custom SVG path for the blob shapes
   */
  blobPath?: string;
  /**
   * Speed of the first blob rotation animation in ms
   */
  firstBlobSpeed?: number;
  /**
   * Speed of the second blob rotation animation in ms
   */
  secondBlobSpeed?: number;
  /**
   * Opacity of the first blob (0-1)
   */
  firstBlobOpacity?: number;
  /**
   * Opacity of the second blob (0-1)
   */
  secondBlobOpacity?: number;
  /**
   * Initial rotation angle for the first blob in degrees
   */
  firstBlobRotation?: number;
  /**
   * Initial rotation angle for the second blob in degrees
   */
  secondBlobRotation?: number;
  /**
   * Should the animation run or be paused
   */
  isAnimating?: boolean;
  /**
   * Enable interactive hover effects that respond to mouse movement
   */
  interactive?: boolean;
  /**
   * Z-index for the background container
   */
  zIndex?: number;
  /**
   * Number of blobs to show (1 or 2)
   */
  blobCount?: 1 | 2;
  /**
   * Children elements to render on top of the background
   */
  children?: React.ReactNode;
  /**
   * Intensity of the interactive effect (1-10)
   */
  interactiveIntensity?: number;
}

/**
 * AnimatedBlobBackground component displays animated gradient blobs with
 * configurable shapes, colors, and animation properties.
 */
export const AnimatedBlobBackground = ({
  className,
  style,
  blurAmount = "4vw",
  firstBlobColors = ["hotpink", "red", "orange", "yellow", "hotpink"],
  secondBlobColors = ["cyan", "blue", "green", "purple", "cyan"],
  blobPath = "polygon(50.9% 37.2%, 43.5% 34.7%, 33.6% 26.1%, 39.2% 10.8%, 26.2% 0.0%, 4.8% 6.4%, 0.0% 30.4%, 20.7% 37.2%, 33.4% 26.3%, 43.2% 34.9%, 45.0% 35.6%, 43.6% 46.4%, 37.8% 59.5%, 21.8% 63.2%, 11.7% 76.1%, 22.9% 91.3%, 47.4% 91.3%, 54.0% 79.0%, 38.0% 59.6%, 43.9% 46.4%, 45.2% 35.5%, 50.9% 37.6%, 56.1% 36.8%, 59.8% 47.6%, 70.3% 61.9%, 87.7% 56.0%, 96.4% 37.4%, 88.6% 15.1%, 63.7% 16.7%, 55.2% 33.6%, 55.9% 36.6%, 50.9% 37.2%)",
  firstBlobSpeed = 8000,
  secondBlobSpeed = 6000,
  firstBlobOpacity = 0.66,
  secondBlobOpacity = 0.5,
  firstBlobRotation = 0,
  secondBlobRotation = 180,
  isAnimating = true,
  interactive = false,
  zIndex = -1,
  blobCount = 2,
  children,
  interactiveIntensity = 5,
}: AnimatedBlobBackgroundProps) => {
  // Create gradient string from blob colors
  const createGradient = (colors: string[]) => {
    return `linear-gradient(${colors.join(", ")})`;
  };

  // Calculate the max movement for interactive mode
  const maxMovement = interactiveIntensity * 10;

  const [mousePosition, setMousePosition] = React.useState({ x: 0, y: 0 });

  // Handle mouse movement for interactive mode
  React.useEffect(() => {
    if (!interactive) return;

    const handleMouseMove = (e: MouseEvent) => {
      const { clientX, clientY } = e;
      const { innerWidth, innerHeight } = window;
      
      // Calculate normalized position (-1 to 1)
      const normalizedX = (clientX / innerWidth) * 2 - 1;
      const normalizedY = (clientY / innerHeight) * 2 - 1;
      
      setMousePosition({ x: normalizedX, y: normalizedY });
    };

    window.addEventListener("mousemove", handleMouseMove);
    
    return () => {
      window.removeEventListener("mousemove", handleMouseMove);
    };
  }, [interactive]);

  return (
    <div 
      className={cn("absolute inset-0 grid overflow-hidden", className)}
      style={{ 
        filter: `blur(${blurAmount})`,
        zIndex,
        ...style,
      }}
    >
      {/* First blob */}
      <motion.div
        className="shape absolute inset-0 mx-auto"
        style={{ 
          clipPath: blobPath, 
          background: createGradient(firstBlobColors),
          opacity: firstBlobOpacity,
          transform: `rotate(${firstBlobRotation}deg)`,
        }}
        animate={
          isAnimating 
            ? { rotate: 360 + firstBlobRotation } 
            : { rotate: firstBlobRotation }
        }
        transition={{ 
          duration: firstBlobSpeed / 1000, 
          ease: "linear", 
          repeat: Infinity,
        }}
        {...(interactive && {
          animate: {
            x: mousePosition.x * maxMovement,
            y: mousePosition.y * maxMovement,
            rotate: isAnimating ? 360 + firstBlobRotation : firstBlobRotation,
          },
          transition: {
            x: { duration: 0.3, ease: "easeOut" },
            y: { duration: 0.3, ease: "easeOut" },
            rotate: { 
              duration: firstBlobSpeed / 1000, 
              ease: "linear", 
              repeat: Infinity,
            },
          }
        })}
      />

      {/* Second blob, only rendered if blobCount is 2 */}
      {blobCount === 2 && (
        <motion.div
          className="shape absolute inset-0 mx-auto"
          style={{ 
            clipPath: blobPath, 
            background: createGradient(secondBlobColors),
            opacity: secondBlobOpacity,
            transform: `rotate(${secondBlobRotation}deg)`,
          }}
          animate={
            isAnimating 
              ? { rotate: 360 + secondBlobRotation } 
              : { rotate: secondBlobRotation }
          }
          transition={{ 
            duration: secondBlobSpeed / 1000, 
            ease: "linear", 
            repeat: Infinity,
          }}
          {...(interactive && {
            animate: {
              x: -mousePosition.x * maxMovement * 0.7,
              y: -mousePosition.y * maxMovement * 0.7,
              rotate: isAnimating ? 360 + secondBlobRotation : secondBlobRotation,
            },
            transition: {
              x: { duration: 0.3, ease: "easeOut" },
              y: { duration: 0.3, ease: "easeOut" },
              rotate: { 
                duration: secondBlobSpeed / 1000, 
                ease: "linear", 
                repeat: Infinity,
              },
            }
          })}
        />
      )}

      {/* Render children on top if provided */}
      {children}
    </div>
  );
};
