agent_backend/components/ui/bubble.tsx

import * as React from 'react';
import { mergeProps } from '@base-ui/react/merge-props';
import { useRender } from '@base-ui/react/use-render';
import { cva, type VariantProps } from 'class-variance-authority';

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

function BubbleGroup({ className, ...props }: React.ComponentProps<'div'>) {
  return (
    <div
      data-slot="bubble-group"
      className={cn('gap-2 flex min-w-0 flex-col', className)}
      {...props}
    />
  );
}

const bubbleVariants = cva(
  'gap-1 data-[align=end]:self-end max-w-[80%] data-[variant=ghost]:max-w-full group-data-[align=end]/message:self-end group/bubble relative flex w-fit min-w-0 flex-col',
  {
    variants: {
      variant: {
        default:
          '*:data-[slot=bubble-content]:bg-primary *:data-[slot=bubble-content]:text-primary-foreground [&>[data-slot=bubble-content]:is(button,a):hover]:bg-primary/80',
        secondary:
          '*:data-[slot=bubble-content]:bg-secondary *:data-[slot=bubble-content]:text-secondary-foreground [&>[data-slot=bubble-content]:is(button,a):hover]:bg-[color-mix(in_oklch,var(--secondary),var(--foreground)_5%)]',
        muted:
          '*:data-[slot=bubble-content]:bg-muted [&>[data-slot=bubble-content]:is(button,a):hover]:bg-[color-mix(in_oklch,var(--muted),var(--foreground)_5%)]',
        tinted:
          '*:data-[slot=bubble-content]:bg-[oklch(from_var(--primary)_0.93_calc(c*0.4)_h)] dark:*:data-[slot=bubble-content]:bg-[oklch(from_var(--primary)_0.3_calc(c*0.4)_h)] *:data-[slot=bubble-content]:text-foreground [&>[data-slot=bubble-content]:is(button,a):hover]:bg-[oklch(from_var(--primary)_0.88_calc(c*0.5)_h)] dark:[&>[data-slot=bubble-content]:is(button,a):hover]:bg-[oklch(from_var(--primary)_0.35_calc(c*0.5)_h)]',
        outline:
          '*:data-[slot=bubble-content]:bg-background *:data-[slot=bubble-content]:border-border [&>[data-slot=bubble-content]:is(button,a):hover]:bg-muted [&>[data-slot=bubble-content]:is(button,a):hover]:text-foreground dark:[&>[data-slot=bubble-content]:is(button,a):hover]:bg-input/30',
        ghost:
          '*:data-[slot=bubble-content]:rounded-none *:data-[slot=bubble-content]:bg-transparent *:data-[slot=bubble-content]:p-0 [&>[data-slot=bubble-content]:is(button,a):hover]:bg-muted [&>[data-slot=bubble-content]:is(button,a):hover]:text-foreground dark:[&>[data-slot=bubble-content]:is(button,a):hover]:bg-muted/50 border-none',
        destructive:
          '*:data-[slot=bubble-content]:bg-destructive/10 dark:*:data-[slot=bubble-content]:bg-destructive/20 *:data-[slot=bubble-content]:text-destructive [&>[data-slot=bubble-content]:is(button,a):hover]:bg-destructive/20 dark:[&>[data-slot=bubble-content]:is(button,a):hover]:bg-destructive/30',
      },
    },
    defaultVariants: {
      variant: 'default',
    },
  },
);

function Bubble({
  variant = 'default',
  align = 'start',
  className,
  ...props
}: React.ComponentProps<'div'> &
  VariantProps<typeof bubbleVariants> & {
    align?: 'start' | 'end';
  }) {
  return (
    <div
      data-slot="bubble"
      data-variant={variant}
      data-align={align}
      className={cn(bubbleVariants({ variant }), className)}
      {...props}
    />
  );
}

function BubbleContent({
  className,
  render,
  ...props
}: useRender.ComponentProps<'div'>) {
  return useRender({
    defaultTagName: 'div',
    props: mergeProps<'div'>(
      {
        className: cn(
          'rounded-xl border border-transparent px-3 py-2 text-sm leading-relaxed [button,a]:outline-none [button,a]:focus-visible:border-ring [button,a]:focus-visible:ring-3 [button,a]:focus-visible:ring-ring/50 group-data-[align=end]/bubble:self-end w-fit max-w-full min-w-0 overflow-hidden wrap-break-word [button]:text-left [button,a]:transition-colors',
          className,
        ),
      },
      props,
    ),
    render,
    state: {
      slot: 'bubble-content',
    },
  });
}

const bubbleReactionsVariants = cva(
  'rounded-full ring-3 ring-card bg-muted shrink-0 gap-1 px-1.5 py-0.5 has-[button]:p-0 text-sm absolute z-10 flex w-fit items-center justify-center',
  {
    variants: {
      side: {
        top: 'top-0 -translate-y-3/4',
        bottom: 'bottom-0 translate-y-3/4',
      },
      align: {
        start: 'left-3',
        end: 'right-3',
      },
    },
    defaultVariants: {
      side: 'bottom',
      align: 'end',
    },
  },
);

function BubbleReactions({
  side = 'bottom',
  align = 'end',
  className,
  ...props
}: React.ComponentProps<'div'> & {
  align?: 'start' | 'end';
  side?: 'top' | 'bottom';
}) {
  return (
    <div
      data-slot="bubble-reactions"
      data-align={align}
      data-side={side}
      className={cn(bubbleReactionsVariants({ side, align }), className)}
      {...props}
    />
  );
}

export { BubbleGroup, Bubble, BubbleContent, BubbleReactions };