// Inspired by Chatbot-UI and modified to fit the needs of this project
// @see https://github.com/mckaywrigley/chatbot-ui/blob/main/components/Chat/ChatMessage.tsx

import { Message } from 'ai';
import remarkGfm from 'remark-gfm';
import remarkMath from 'remark-math';

import { cn } from '@/lib/utils';
import { CodeBlock } from '@/components/ui/codeblock';
import { MemoizedReactMarkdown } from '@/components/markdown';
import { IconOpenAI, IconUser } from '@/components/ui/icons';
import { ChatMessageActions } from '@/components/chat-message-actions';

export interface ChatMessageProps {
	message: Message;
}

export function ChatMessage({ message, ...props }: ChatMessageProps) {
	return (
		<div className={cn('group relative mb-4 flex items-start')} {...props}>
			<div
				className={cn(
					'flex size-8 shrink-0 select-none items-center justify-center rounded-md border shadow',
					message.role === 'user'
						? 'bg-background'
						: 'bg-primary text-primary-foreground',
				)}
			>
				{message.role === 'user' ? <IconUser /> : <IconOpenAI />}
			</div>
			<div className="flex-1 px-1 ml-4 space-y-2 overflow-hidden">
				<MemoizedReactMarkdown
					className="prose break-words dark:prose-invert prose-p:leading-relaxed prose-pre:p-0"
					remarkPlugins={[remarkGfm, remarkMath]}
					components={{
						p({ children }) {
							return <p className="mb-2 last:mb-0">{children}</p>;
						},
						code({ node, inline, className, children, ...props }) {
							if (children.length) {
								if (children[0] == '▍') {
									return (
										<span className="mt-1 cursor-default animate-pulse">▍</span>
									);
								}

								children[0] = (children[0] as string).replace('`▍`', '▍');
							}

							const match = /language-(\w+)/.exec(className || '');

							if (inline) {
								return (
									<code className={className} {...props}>
										{children}
									</code>
								);
							}

							return (
								<CodeBlock
									key={Math.random()}
									language={(match && match[1]) || ''}
									value={String(children).replace(/\n$/, '')}
									{...props}
								/>
							);
						},
					}}
				>
					{message.content}
				</MemoizedReactMarkdown>
				<ChatMessageActions message={message} />
			</div>
		</div>
	);
}