import React, { useEffect, useRef, useState } from 'react';
import { clsx } from 'clsx';

export interface TooltipProps {
  content: React.ReactNode;
  children: React.ReactNode;
  position?: 'top' | 'bottom' | 'left' | 'right';
  delay?: number;
  className?: string;
  disabled?: boolean;
}

const positionClasses = {
  top: 'bottom-full left-1/2 -translate-x-1/2 mb-2',
  bottom: 'top-full left-1/2 -translate-x-1/2 mt-2',
  left: 'right-full top-1/2 -translate-y-1/2 mr-2',
  right: 'left-full top-1/2 -translate-y-1/2 ml-2',
};

const arrowClasses = {
  top: 'top-full left-1/2 -translate-x-1/2 border-t-background border-l-transparent border-r-transparent border-b-transparent',
  bottom:
    'bottom-full left-1/2 -translate-x-1/2 border-b-background border-l-transparent border-r-transparent border-t-transparent',
  left: 'left-full top-1/2 -translate-y-1/2 border-l-background border-t-transparent border-b-transparent border-r-transparent',
  right:
    'right-full top-1/2 -translate-y-1/2 border-r-background border-t-transparent border-b-transparent border-l-transparent',
};

/**
 * Tooltip component
 */
export const Tooltip = ({
  content,
  children,
  position = 'top',
  delay = 200,
  className,
  disabled = false,
}: TooltipProps) => {
  const [isVisible, setIsVisible] = useState(false);
  const [showTooltip, setShowTooltip] = useState(false);
  const timeoutRef = useRef<NodeJS.Timeout>();
  const isVisibleRef = useRef(isVisible);

  // Keep ref in sync with state
  useEffect(() => {
    isVisibleRef.current = isVisible;
  }, [isVisible]);

  // Handle tooltip visibility with proper cleanup
  useEffect(() => {
    // Clear any existing timeout
    if (timeoutRef.current) {
      clearTimeout(timeoutRef.current);
      timeoutRef.current = undefined;
    }

    if (isVisible && !disabled) {
      // Set up delayed show
      timeoutRef.current = setTimeout(() => {
        // Only show if still visible when timeout fires
        if (isVisibleRef.current) {
          setShowTooltip(true);
        }
      }, delay);
    } else {
      // Hide immediately when not visible or disabled
      setShowTooltip(false);
    }

    return () => {
      if (timeoutRef.current) {
        clearTimeout(timeoutRef.current);
        timeoutRef.current = undefined;
      }
    };
  }, [isVisible, delay, disabled]);

  if (disabled) {
    return <>{children}</>;
  }

  return (
    <div
      className="relative inline-block"
      onMouseEnter={() => setIsVisible(true)}
      onMouseLeave={() => {
        setIsVisible(false);
        setShowTooltip(false);
      }}
      onFocus={() => setIsVisible(true)}
      onBlur={() => {
        setIsVisible(false);
        setShowTooltip(false);
      }}
    >
      {children}
      {showTooltip && (
        <div
          className={clsx(
            'absolute z-50 px-2 py-1',
            'text-xs text-foreground bg-background',
            'border rounded-md shadow-lg',
            'whitespace-nowrap',
            'animate-in fade-in-0 zoom-in-95 duration-200',
            positionClasses[position],
            className
          )}
          role="tooltip"
        >
          {content}
          <div className={clsx('absolute border-4', arrowClasses[position])} />
        </div>
      )}
    </div>
  );
};