'use client';

import * as React from 'react';
import { cva, type VariantProps } from '@/lib/cva';
import { Tabs as TabsPrimitive } from 'radix-ui';

import { cn } from '@/lib/utils';
import { disabledState, focusRing, iconSizing } from '@/lib/cva-presets';

const tabsListVariants = cva(
  cn(
    'group/tabs-list 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'
  ),
  {
    variants: {
      variant: {
        /** Segmented control on a filled track. */
        default: 'bg-muted',
        /** Underlined tabs — better when the tab strip spans the full width. */
        line: 'gap-1 rounded-none bg-transparent',
      },
    },
    defaultVariants: {
      variant: 'default',
    },
  }
);

export type TabsProps = React.ComponentProps<typeof TabsPrimitive.Root>;
export interface TabsListProps
  extends React.ComponentProps<typeof TabsPrimitive.List>,
    VariantProps<typeof tabsListVariants> {}

/**
 * Switches between sibling panels without leaving the page.
 *
 * Tabs are for alternate views of the same subject. If the panels are separate
 * destinations, use links and routes so they can be shared and bookmarked.
 */
function Tabs({ className, orientation = 'horizontal', ...props }: TabsProps) {
  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}
    />
  );
}

function TabsList({ className, variant = 'default', ...props }: TabsListProps) {
  return (
    <TabsPrimitive.List
      data-slot="tabs-list"
      data-variant={variant}
      className={cn(tabsListVariants({ variant }), className)}
      {...props}
    />
  );
}

function TabsTrigger({
  className,
  ...props
}: React.ComponentProps<typeof TabsPrimitive.Trigger>) {
  return (
    <TabsPrimitive.Trigger
      data-slot="tabs-trigger"
      className={cn(
        'relative inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-md border border-transparent px-2 py-1 text-sm font-medium whitespace-nowrap text-muted-foreground',
        'transition-all duration-(--ui-duration-fast) ease-(--ui-ease-standard)',
        'hover:text-foreground',
        'group-data-[orientation=vertical]/tabs:w-full group-data-[orientation=vertical]/tabs:justify-start',
        'data-[state=active]:bg-background data-[state=active]:text-foreground',
        'dark:data-[state=active]:border-input dark:data-[state=active]:bg-input/30',
        'group-data-[variant=default]/tabs-list:data-[state=active]:shadow-sm',
        // The `line` variant swaps the filled pill for an underline.
        'group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:data-[state=active]:bg-transparent group-data-[variant=line]/tabs-list:data-[state=active]:shadow-none',
        'dark:group-data-[variant=line]/tabs-list:data-[state=active]:border-transparent dark:group-data-[variant=line]/tabs-list:data-[state=active]:bg-transparent',
        'after:absolute after:bg-foreground after:opacity-0 after:transition-opacity',
        'group-data-[orientation=horizontal]/tabs:after:inset-x-0 group-data-[orientation=horizontal]/tabs:after:bottom-[-5px] group-data-[orientation=horizontal]/tabs:after:h-0.5',
        'group-data-[orientation=vertical]/tabs:after:inset-y-0 group-data-[orientation=vertical]/tabs:after:-right-1 group-data-[orientation=vertical]/tabs:after:w-0.5',
        'group-data-[variant=line]/tabs-list:data-[state=active]:after:opacity-100',
        focusRing,
        disabledState,
        iconSizing,
        className
      )}
      {...props}
    />
  );
}

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

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