Ghost Shell

"use client";

import * as React from "react";
import { cva } from "class-variance-authority";
import { Tabs as TabsPrimitive } from "radix-ui";

import { cn } from "@/lib/utils";

function Tabs({
  className,
  orientation = "horizontal",
  ...props
}) {
  return (
    <TabsPrimitive.Root
      data-slot="tabs"
      data-orientation={orientation}
      orientation={orientation}
      className={cn(
        "group/tabs flex gap-2 data-[orientation=horizontal]:flex-col",
        className
      )}
      {...props}
    />
  );
}

const tabsListVariants = cva(
  "group/tabs-list relative inline-flex w-fit items-center justify-center rounded-lg p-[3px] text-muted-foreground group-data-[orientation=horizontal]/tabs:h-9 group-data-[orientation=vertical]/tabs:h-fit group-data-[orientation=vertical]/tabs:flex-col data-[variant=line]:rounded-none",
  {
    variants: {
      variant: {
        default: "bg-muted",
        line: "gap-1 bg-transparent",
      },
    },
    defaultVariants: {
      variant: "default",
    },
  }
);

function TabsList({
  className,
  variant = "default",
  children,
  ...props
}) {
  const listRef = React.useRef(null);
  const [indicator, setIndicator] = React.useState({
    left: 0,
    top: 0,
    width: 0,
    height: 0,
    ready: false,
  });

  const updateIndicator = React.useCallback(() => {
    const list = listRef.current;
    if (!list) return;

    const active = list.querySelector('[data-state="active"]');
    if (!active) {
      setIndicator((prev) => ({ ...prev, ready: false }));
      return;
    }

    const activeRect = active.getBoundingClientRect();
    const listRect = list.getBoundingClientRect();

    requestAnimationFrame(() => {
      setIndicator({
        left: activeRect.left - listRect.left,
        top: activeRect.top - listRect.top,
        width: activeRect.width,
        height: activeRect.height,
        ready: true,
      });
    });
  }, []);

  React.useEffect(() => {
    const list = listRef.current;
    if (!list) return;

    updateIndicator();

    const resizeObserver = new ResizeObserver(updateIndicator);
    resizeObserver.observe(list);

    const mutationObserver = new MutationObserver(updateIndicator);
    mutationObserver.observe(list, {
      attributes: true,
      attributeFilter: ["data-state"],
      childList: true,
      subtree: true,
    });

    window.addEventListener("resize", updateIndicator);

    return () => {
      resizeObserver.disconnect();
      mutationObserver.disconnect();
      window.removeEventListener("resize", updateIndicator);
    };
  }, [updateIndicator]);

  return (
    <TabsPrimitive.List
      ref={listRef}
      data-slot="tabs-list"
      data-variant={variant}
      className={cn(tabsListVariants({ variant }), className)}
      {...props}
    >
      <div
        aria-hidden
        data-slot="tabs-indicator"
        className={cn(
          "pointer-events-none absolute rounded-md border border-transparent bg-background shadow-sm transition-all duration-300 ease-in-out dark:border-input dark:bg-input/30",
          "group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:shadow-none group-data-[variant=line]/tabs-list:dark:bg-transparent group-data-[variant=line]/tabs-list:rounded-none group-data-[variant=line]/tabs-list:border-b-2 group-data-[variant=line]/tabs-list:border-b-foreground",
          !indicator.ready && "opacity-0"
        )}
        style={{
          left: indicator.left,
          top: indicator.top,
          width: indicator.width,
          height: indicator.height,
        }}
      />
      {children}
    </TabsPrimitive.List>
  );
}

function TabsTrigger({
  className,
  ...props
}) {
  return (
    <TabsPrimitive.Trigger
      data-slot="tabs-trigger"
      className={cn(
        "relative z-10 inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-xs border border-transparent px-2 py-1 text-sm font-medium whitespace-nowrap text-foreground/60 transition-colors group-data-[orientation=vertical]/tabs:w-full group-data-[orientation=vertical]/tabs:justify-start hover:text-foreground focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 focus-visible:outline-1 focus-visible:outline-ring disabled:pointer-events-none disabled:opacity-50 data-[state=active]:text-foreground dark:text-muted-foreground dark:hover:text-foreground dark:data-[state=active]:text-foreground [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
        className
      )}
      {...props}
    />
  );
}

function TabsContent({
  className,
  ...props
}) {
  return (
    <TabsPrimitive.Content
      data-slot="tabs-content"
      className={cn("flex-1 outline-none", className)}
      {...props}
    />
  );
}

export { Tabs, TabsList, TabsTrigger, TabsContent, tabsListVariants };