"use client";

import type { HTMLAttributes, MouseEvent } from "react";
import {
  forwardRef,
  useCallback,
  useEffect,
  useImperativeHandle,
  useRef
} from "react";
import {
  motion,
  useAnimation,
  useReducedMotion,
  type Variants
} from "framer-motion";
import { cn } from "../../lib/utils";

export interface FilePenLineIconHandle {
  startAnimation: () => void;
  stopAnimation: () => void;
}

interface FilePenLineIconProps extends HTMLAttributes<HTMLDivElement> {
  size?: number;
  active?: boolean;
}

const PEN_VARIANTS: Variants = {
  normal: {
    rotate: 0,
    x: 0,
    y: 0
  },
  animate: {
    rotate: [-0.3, 0.2, -0.4],
    x: [0, -0.5, 1, 0],
    y: [0, 1, -0.5, 0],
    transition: {
      duration: 0.5,
      repeat: 1,
      ease: "easeInOut"
    }
  },
  active: {
    rotate: [-0.3, 0.2, -0.4],
    x: [0, -0.5, 1, 0],
    y: [0, 1, -0.5, 0],
    transition: {
      duration: 0.5,
      repeat: Number.POSITIVE_INFINITY,
      repeatDelay: 0.75,
      ease: "easeInOut"
    }
  }
};

const LINE_VARIANTS: Variants = {
  normal: { d: "M8 18h1" },
  animate: {
    d: "M8 18h5",
    transition: { duration: 0.5 }
  },
  active: {
    d: ["M8 18h1", "M8 18h5", "M8 18h1"],
    transition: {
      duration: 0.8,
      repeat: Number.POSITIVE_INFINITY,
      repeatDelay: 0.45,
      ease: "easeInOut"
    }
  }
};

const FilePenLineIcon = forwardRef<FilePenLineIconHandle, FilePenLineIconProps>(
  (
    {
      active = false,
      onMouseEnter,
      onMouseLeave,
      className,
      size = 28,
      ...props
    },
    ref
  ) => {
    const controls = useAnimation();
    const reduceMotion = useReducedMotion();
    const isControlledRef = useRef(false);

    const startAnimation = useCallback(() => {
      if (reduceMotion) {
        return;
      }
      void controls.start(active ? "active" : "animate");
    }, [active, controls, reduceMotion]);

    const stopAnimation = useCallback(() => {
      void controls.start("normal");
    }, [controls]);

    useImperativeHandle(ref, () => {
      isControlledRef.current = true;

      return {
        startAnimation,
        stopAnimation
      };
    });

    useEffect(() => {
      if (active) {
        startAnimation();
        return;
      }
      stopAnimation();
    }, [active, startAnimation, stopAnimation]);

    const handleMouseEnter = useCallback(
      (event: MouseEvent<HTMLDivElement>) => {
        if (isControlledRef.current) {
          onMouseEnter?.(event);
        } else {
          startAnimation();
        }
      },
      [onMouseEnter, startAnimation]
    );

    const handleMouseLeave = useCallback(
      (event: MouseEvent<HTMLDivElement>) => {
        if (isControlledRef.current) {
          onMouseLeave?.(event);
        } else {
          stopAnimation();
        }
      },
      [onMouseLeave, stopAnimation]
    );

    return (
      <div
        className={cn("inline-flex items-center justify-center", className)}
        onMouseEnter={handleMouseEnter}
        onMouseLeave={handleMouseLeave}
        {...props}
      >
        <svg
          fill="none"
          height={size}
          stroke="currentColor"
          strokeLinecap="round"
          strokeLinejoin="round"
          strokeWidth="2"
          viewBox="0 0 24 24"
          width={size}
          xmlns="http://www.w3.org/2000/svg"
        >
          <path d="m18 5-2.414-2.414A2 2 0 0 0 14.172 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2" />
          <motion.path
            animate={controls}
            d="M21.378 12.626a1 1 0 0 0-3.004-3.004l-4.01 4.012a2 2 0 0 0-.506.854l-.837 2.87a.5.5 0 0 0 .62.62l2.87-.837a2 2 0 0 0 .854-.506z"
            initial="normal"
            variants={PEN_VARIANTS}
          />
          <motion.path
            animate={controls}
            d="M8 18h1"
            initial="normal"
            variants={LINE_VARIANTS}
          />
        </svg>
      </div>
    );
  }
);

FilePenLineIcon.displayName = "FilePenLineIcon";

export { FilePenLineIcon };