import * as React from 'react';
import { Tabs as TabsPrimitive } from '@base-ui/react/tabs';
import { cva, type VariantProps } from 'class-variance-authority';

import { classNames } from '../../lib/utils';

const Tabs = React.forwardRef<HTMLDivElement, TabsPrimitive.Root.Props>(
  function Tabs({ className, orientation = 'horizontal', ...props }, ref) {
    return (
      <TabsPrimitive.Root
        data-slot="tabs"
        data-orientation={orientation}
        className={classNames(
          'group/tabs flex gap-2 data-horizontal:flex-col',
          className
        )}
        {...props}
        ref={ref}
      />
    );
  }
);

const tabsListVariants = cva(
  // A tab list is sized to its tabs. Capped to its parent and allowed to wrap
  // so it can never spill over whatever sits beside it: a bar that overflows
  // hides sections behind an edge, and a merchant cannot act on a section
  // they cannot see. Bars that would rather shed their labels than gain a row
  // opt out with ``flex-nowrap`` and hide the labels themselves.
  'group/tabs-list inline-flex w-fit max-w-full flex-wrap items-center justify-center rounded-lg p-[3px] text-muted-foreground group-data-horizontal/tabs:min-h-8 group-data-vertical/tabs:h-fit group-data-vertical/tabs:flex-col data-[variant=line]:rounded-none',
  {
    variants: {
      variant: {
        default: 'bg-muted',
        line: 'gap-1 bg-transparent',
      },
    },
    defaultVariants: {
      variant: 'default',
    },
  }
);

const TabsList = React.forwardRef<
  HTMLDivElement,
  TabsPrimitive.List.Props & VariantProps<typeof tabsListVariants>
>(function TabsList({ className, variant = 'default', ...props }, ref) {
  return (
    <TabsPrimitive.List
      data-slot="tabs-list"
      data-variant={variant}
      className={classNames(tabsListVariants({ variant }), className)}
      {...props}
      ref={ref}
    />
  );
});

const TabsTrigger = React.forwardRef<
  HTMLButtonElement,
  TabsPrimitive.Tab.Props
>(function TabsTrigger({ className, ...props }, ref) {
  return (
    <TabsPrimitive.Tab
      data-slot="tabs-trigger"
      className={classNames(
        // ``min-w-fit`` is load-bearing: ``flex-1`` gives every tab a zero
        // basis, so in a bar that is one pixel too narrow the triggers used
        // to shrink under their own text and each label drew straight over
        // its neighbour. A tab may share spare room; it may never be
        // narrower than what it says.
        "relative inline-flex h-7 min-w-fit flex-1 items-center justify-center gap-1.5 rounded-md border border-transparent px-1.5 py-0.5 text-sm font-medium whitespace-nowrap text-foreground/60 transition-all group-data-vertical/tabs:w-full group-data-vertical/tabs:justify-start hover:text-foreground focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/70 dark:focus-visible:ring-ring/50 focus-visible:outline-1 focus-visible:outline-ring disabled:pointer-events-none disabled:opacity-50 aria-disabled:pointer-events-none aria-disabled:opacity-50 dark:text-muted-foreground dark:hover:text-foreground group-data-[variant=default]/tabs-list:data-active:shadow-sm group-data-[variant=line]/tabs-list:data-active:shadow-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
        'group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:data-active:bg-transparent dark:group-data-[variant=line]/tabs-list:data-active:border-transparent dark:group-data-[variant=line]/tabs-list:data-active:bg-transparent',
        'data-active:bg-background data-active:text-foreground dark:data-active:border-input dark:data-active:bg-input/30 dark:data-active:text-foreground',
        'after:absolute after:bg-foreground after:opacity-0 after:transition-opacity group-data-horizontal/tabs:after:inset-x-0 group-data-horizontal/tabs:after:bottom-[-5px] group-data-horizontal/tabs:after:h-0.5 group-data-vertical/tabs:after:inset-y-0 group-data-vertical/tabs:after:-right-1 group-data-vertical/tabs:after:w-0.5 group-data-[variant=line]/tabs-list:data-active:after:opacity-100',
        className
      )}
      {...props}
      ref={ref}
    />
  );
});

const TabsContent = React.forwardRef<HTMLDivElement, TabsPrimitive.Panel.Props>(
  function TabsContent({ className, ...props }, ref) {
    return (
      <TabsPrimitive.Panel
        data-slot="tabs-content"
        className={classNames(
          'text-sm outline-none data-[hidden]:hidden [&[hidden]]:hidden',
          className
        )}
        {...props}
        ref={ref}
      />
    );
  }
);

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