ai-sdk exploration

components/ai-elements/conversation.tsx

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+'use client';
+
+import type { ComponentProps } from 'react';
+import { useCallback } from 'react';
+import { ArrowDownIcon } from 'lucide-react';
+import { StickToBottom, useStickToBottomContext } from 'use-stick-to-bottom';
+import { Button } from '@/components/ui/button';
+import { cn } from '@/lib/utils';
+
+export type ConversationProps = ComponentProps<typeof StickToBottom>;
+
+export const Conversation = ({ className, ...props }: ConversationProps) => (
+  <StickToBottom
+    className={cn('relative flex-1 overflow-y-hidden', className)}
+    initial="smooth"
+    resize="smooth"
+    role="log"
+    {...props}
+  />
+);
+
+export type ConversationContentProps = ComponentProps<typeof StickToBottom.Content>;
+
+export const ConversationContent = ({ className, ...props }: ConversationContentProps) => (
+  <StickToBottom.Content className={cn('flex flex-col gap-8 p-4', className)} {...props} />
+);
+
+export type ConversationEmptyStateProps = ComponentProps<'div'> & {
+  title?: string;
+  description?: string;
+  icon?: React.ReactNode;
+};
+
+export const ConversationEmptyState = ({
+  className,
+  title = 'No messages yet',
+  description = 'Start a conversation to see messages here',
+  icon,
+  children,
+  ...props
+}: ConversationEmptyStateProps) => (
+  <div
+    className={cn(
+      'flex size-full flex-col items-center justify-center gap-3 p-8 text-center',
+      className
+    )}
+    {...props}
+  >
+    {children ?? (
+      <>
+        {icon && <div className="text-muted-foreground">{icon}</div>}
+        <div className="space-y-1">
+          <h3 className="text-sm font-medium">{title}</h3>
+          {description && <p className="text-muted-foreground text-sm">{description}</p>}
+        </div>
+      </>
+    )}
+  </div>
+);
+
+export type ConversationScrollButtonProps = ComponentProps<typeof Button>;
+
+export const ConversationScrollButton = ({
+  className,
+  ...props
+}: ConversationScrollButtonProps) => {
+  const { isAtBottom, scrollToBottom } = useStickToBottomContext();
+
+  const handleScrollToBottom = useCallback(() => {
+    scrollToBottom();
+  }, [scrollToBottom]);
+
+  return (
+    !isAtBottom && (
+      <Button
+        className={cn('absolute bottom-4 left-[50%] translate-x-[-50%] rounded-full', className)}
+        onClick={handleScrollToBottom}
+        size="icon"
+        type="button"
+        variant="outline"
+        {...props}
+      >
+        <ArrowDownIcon className="size-4" />
+      </Button>
+    )
+  );
+};