"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 FileTextIconHandle {
  startAnimation: () => void;
  stopAnimation: () => void;
}

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

const FILE_TEXT_LINE_VARIANTS: Variants = {
  normal: {
    pathLength: 1,
    pathOffset: 0
  },
  animate: (delay: number) => ({
    pathLength: [1, 0, 1],
    pathOffset: [0, 1, 0],
    transition: {
      duration: 0.7,
      delay,
      ease: "easeInOut"
    }
  }),
  active: (delay: number) => ({
    pathLength: [1, 0, 1],
    pathOffset: [0, 1, 0],
    transition: {
      duration: 0.7,
      delay,
      ease: "easeInOut",
      repeat: Number.POSITIVE_INFINITY,
      repeatDelay: 1.1
    }
  })
};

const FileTextIcon = forwardRef<FileTextIconHandle, FileTextIconProps>(
  (
    {
      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}
      >
        <motion.svg
          animate={controls}
          fill="none"
          height={size}
          initial="normal"
          stroke="currentColor"
          strokeLinecap="round"
          strokeLinejoin="round"
          strokeWidth="2"
          variants={{
            normal: { scale: 1 },
            animate: {
              scale: 1.05,
              transition: {
                duration: 0.3,
                ease: "easeOut"
              }
            },
            active: {
              scale: [1, 1.05, 1],
              transition: {
                duration: 0.9,
                ease: "easeInOut",
                repeat: Number.POSITIVE_INFINITY,
                repeatDelay: 0.9
              }
            }
          }}
          viewBox="0 0 24 24"
          width={size}
          xmlns="http://www.w3.org/2000/svg"
        >
          <path d="M15 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7Z" />
          <path d="M14 2v4a2 2 0 0 0 2 2h4" />
          <motion.path
            animate={controls}
            custom={0.3}
            d="M10 9H8"
            variants={FILE_TEXT_LINE_VARIANTS}
          />
          <motion.path
            animate={controls}
            custom={0.5}
            d="M16 13H8"
            variants={FILE_TEXT_LINE_VARIANTS}
          />
          <motion.path
            animate={controls}
            custom={0.7}
            d="M16 17H8"
            variants={FILE_TEXT_LINE_VARIANTS}
          />
        </motion.svg>
      </div>
    );
  }
);

FileTextIcon.displayName = "FileTextIcon";

export { FileTextIcon };