import { motion, Easing } from "framer-motion";
import { cn } from "@/components/lib/utils"; // Assuming you have a utility for class name concatenation
import { useState, useEffect } from "react"; // Import useState and useEffect

interface TopStickyBarProps {
  /**
   * Controls the visibility of the bar. True to show, false to hide.
   * This prop is ignored if `showOnScroll` is true.
   */
  show?: boolean; // Make optional as it might be controlled internally
  /**
   * If true, the bar's visibility will be controlled by scroll position.
   * If false or undefined, the `show` prop controls visibility.
   * @default false
   */
  showOnScroll?: boolean;
  /**
   * The scroll position (in pixels) after which the bar will become visible when `showOnScroll` is true.
   * @default 200
   */
  scrollThreshold?: number;
  /**
   * The content to display inside the sticky bar. Can be a string, JSX, or any React Node.
   */
  children: React.ReactNode;
  /**
   * Optional. Additional Tailwind CSS classes to apply to the bar for styling.
   * Defaults to basic styling for a top bar.
   */
  className?: string;
  /**
   * Optional. The animation duration in seconds.
   * @default 0.4
   */
  duration?: number;
  /**
   * Optional. The easing function for the animation.
   * @default "easeInOut"
   */
  ease?: Easing | Easing[];
  /**
   * Optional. The initial vertical offset for the animation (when hidden).
   * @default -50
   */
  initialY?: number;
  /**
   * Optional. The vertical offset when the bar is shown.
   * @default 0
   */
  visibleY?: number;
  /**
   * Optional. The vertical offset when the bar is hidden.
   * @default -50
   */
  hiddenY?: number;
}

const TopStickyBar = ({
  show: externalShow = false, // Renamed to avoid conflict with internal state
  showOnScroll = false,
  scrollThreshold = 200,
  children,
  className,
  duration = 0.4,
  ease = "easeInOut",
  initialY = -50,
  visibleY = 0,
  hiddenY = -50,
}: TopStickyBarProps) => {
  const [internalShow, setInternalShow] = useState(externalShow); // Initialize with externalShow

  // Effect to manage scroll-based visibility
  useEffect(() => {
    if (!showOnScroll) {
      setInternalShow(externalShow); // If not scroll-controlled, use external prop
      return;
    }

    const handleScroll = () => {
      if (window.scrollY > scrollThreshold) {
        setInternalShow(true);
      } else {
        setInternalShow(false);
      }
    };

    window.addEventListener("scroll", handleScroll);
    // Call once on mount to set initial state based on current scroll
    handleScroll();

    return () => window.
removeEventListener("scroll", handleScroll);
  }, [showOnScroll, scrollThreshold, externalShow]); // Re-run if these props change

  // Determine the final `show` value
  const finalShow = showOnScroll ? internalShow : externalShow;

  return (
    <motion.div
      initial={{ y: initialY, opacity: 0 }}
      animate={{
        y: finalShow ? visibleY : hiddenY,
        opacity: finalShow ? 1 : 0,
      }}
      transition={{ duration, ease }}
      className={cn(
        "fixed top-0 left-0 w-full z-[60] bg-gray-800 text-white py-1 text-sm text-center shadow-md",
        className
      )}
    >
      {children}
    </motion.div>
  );
};

export default TopStickyBar;