| 'use client'; |
|
|
| import { useEffect, useRef, type FC } from 'react'; |
| import { |
| ActionBarPrimitive, |
| AssistantIf, |
| BranchPickerPrimitive, |
| ComposerPrimitive, |
| MessagePrimitive, |
| ThreadPrimitive, |
| useAssistantState, |
| useThreadViewport, |
| useThread, |
| } from '@assistant-ui/react'; |
| import { |
| ArrowUpIcon, |
| BookOpenIcon, |
| CheckIcon, |
| ChevronDownIcon, |
| ChevronLeftIcon, |
| ChevronRightIcon, |
| CopyIcon, |
| PencilIcon, |
| RefreshCwIcon, |
| SquareIcon, |
| Trash2Icon, |
| } from 'lucide-react'; |
|
|
| import { MarkdownText } from './MarkdownText'; |
| import { Button } from '@/components/ui/button'; |
| import { |
| DropdownMenu, |
| DropdownMenuContent, |
| DropdownMenuTrigger, |
| } from '@/components/ui/dropdown-menu'; |
| import { cn } from '@/utils/tailwind'; |
| import type { ScoredChunk } from '@/services/ai/types'; |
|
|
| interface ThreadProps { |
| sources?: ScoredChunk[]; |
| onClear?: () => void; |
| onResetIndex?: () => void; |
| isLoadingHistory?: boolean; |
| hasActiveConversation?: boolean; |
| } |
|
|
| const LoadingOverlay: FC<{ isVisible: boolean }> = ({ isVisible }) => { |
| return ( |
| <div |
| className={cn( |
| 'absolute inset-0 z-20 flex items-center justify-center', |
| 'bg-base-100/60 backdrop-blur-sm', |
| 'transition-all duration-300 ease-out', |
| isVisible ? 'opacity-100' : 'pointer-events-none opacity-0', |
| )} |
| > |
| <div className='bg-base-content/10 size-8 animate-pulse rounded-full' /> |
| </div> |
| ); |
| }; |
|
|
| const ScrollToBottomButton: FC = () => { |
| const isAtBottom = useThreadViewport((v) => v.isAtBottom); |
| const lastMessageRole = useThread((t) => t.messages.at(-1)?.role); |
| const isRunning = useThread((t) => t.isRunning); |
|
|
| |
| if (lastMessageRole === 'user' && !isRunning) return null; |
|
|
| return ( |
| <ThreadPrimitive.ScrollToBottom |
| className={cn( |
| 'absolute bottom-4 left-1/2 z-10', |
| 'flex items-center justify-center rounded-full p-2', |
| 'bg-base-300 text-base-content', |
| 'hover:bg-base-200', |
| 'border-base-content/10 border', |
| 'shadow-sm', |
| 'active:scale-[0.97]', |
| 'transition-[opacity,filter,transform] duration-150 ease-out', |
| isAtBottom |
| ? 'pointer-events-none -translate-x-1/2 scale-90 opacity-0 blur-sm' |
| : '-translate-x-1/2 scale-100 opacity-100 blur-0', |
| )} |
| style={{ |
| animation: isAtBottom ? 'none' : 'subtleBounce 2.5s ease-in-out infinite', |
| }} |
| aria-hidden={isAtBottom} |
| aria-label='Scroll to bottom' |
| > |
| <ChevronDownIcon className='size-4' /> |
| <style>{` |
| @keyframes subtleBounce { |
| 0%, 100% { transform: translateX(-50%) translateY(0); } |
| 50% { transform: translateX(-50%) translateY(1px); } |
| } |
| `}</style> |
| </ThreadPrimitive.ScrollToBottom> |
| ); |
| }; |
|
|
| export const Thread: FC<ThreadProps> = ({ |
| sources = [], |
| onClear, |
| onResetIndex, |
| isLoadingHistory = false, |
| hasActiveConversation = false, |
| }) => { |
| const viewportRef = useRef<HTMLDivElement>(null); |
| const isInitialMount = useRef(true); |
| const messageCount = useThread((t) => t.messages.length); |
| const lastMessageRole = useThread((t) => t.messages.at(-1)?.role); |
| const isRunning = useThread((t) => t.isRunning); |
|
|
| const showLoading = isLoadingHistory && hasActiveConversation; |
|
|
| useEffect(() => { |
| if (isInitialMount.current && messageCount > 0 && viewportRef.current) { |
| isInitialMount.current = false; |
| requestAnimationFrame(() => { |
| const viewport = viewportRef.current; |
| if (viewport) { |
| viewport.scrollTop = viewport.scrollHeight; |
| } |
| }); |
| } |
| }, [messageCount]); |
|
|
| useEffect(() => { |
| if (lastMessageRole === 'user' && viewportRef.current && !isInitialMount.current) { |
| requestAnimationFrame(() => { |
| const viewport = viewportRef.current; |
| if (!viewport) return; |
|
|
| const messages = viewport.querySelectorAll('[data-message-role="user"]'); |
| const lastUserMessage = messages[messages.length - 1]; |
| if (lastUserMessage) { |
| lastUserMessage.scrollIntoView({ |
| behavior: 'smooth', |
| block: 'nearest', |
| }); |
| } |
| }); |
| } |
| }, [messageCount, lastMessageRole]); |
|
|
| const getSpacerHeight = () => { |
| if (lastMessageRole === 'user' && !isRunning) { |
| return 'min-h-8'; |
| } |
| if (isRunning) { |
| return 'min-h-[50vh]'; |
| } |
| if (lastMessageRole === 'assistant') { |
| return 'min-h-4'; |
| } |
| return 'min-h-4'; |
| }; |
|
|
| return ( |
| <ThreadPrimitive.Root className='bg-base-100 relative flex h-full w-full flex-col items-stretch px-3'> |
| <LoadingOverlay isVisible={showLoading} /> |
| |
| {!hasActiveConversation && ( |
| <ThreadPrimitive.Empty> |
| <div className='animate-in fade-in flex h-full flex-col items-center justify-center duration-300'> |
| <div className='bg-base-content/10 mb-4 rounded-full p-3'> |
| <BookOpenIcon className='text-base-content size-6' /> |
| </div> |
| <h3 className='text-base-content mb-1 text-sm font-medium'>Ask about this book</h3> |
| <p className='text-base-content/60 mb-4 text-xs'> |
| Get answers based on the book content |
| </p> |
| <Composer onClear={onClear} onResetIndex={onResetIndex} /> |
| </div> |
| </ThreadPrimitive.Empty> |
| )} |
| |
| <AssistantIf condition={(s) => s.thread.isEmpty === false}> |
| <div |
| className={cn( |
| 'relative min-h-0 flex-1 transition-opacity duration-300', |
| showLoading ? 'opacity-0' : 'opacity-100', |
| )} |
| > |
| <ThreadPrimitive.Viewport |
| ref={viewportRef} |
| autoScroll={false} |
| className='absolute inset-0 flex flex-col overflow-y-auto scroll-smooth pt-2' |
| > |
| <ThreadPrimitive.Messages |
| components={{ |
| UserMessage, |
| EditComposer, |
| AssistantMessage: () => <AssistantMessage sources={sources} />, |
| }} |
| /> |
| <p className='text-base-content/40 mx-auto w-full p-1 text-center text-[10px]'> |
| AI can make mistakes. Verify with the book. |
| </p> |
| <div |
| className={cn('flex-shrink transition-all duration-300', getSpacerHeight())} |
| aria-hidden='true' |
| /> |
| </ThreadPrimitive.Viewport> |
| |
| <ScrollToBottomButton /> |
| </div> |
| |
| <Composer onClear={onClear} onResetIndex={onResetIndex} /> |
| </AssistantIf> |
| </ThreadPrimitive.Root> |
| ); |
| }; |
|
|
| interface ComposerProps { |
| onClear?: () => void; |
| onResetIndex?: () => void; |
| } |
|
|
| const Composer: FC<ComposerProps> = ({ onClear, onResetIndex }) => { |
| const isEmpty = useAssistantState((s) => s.composer.isEmpty); |
| const isRunning = useAssistantState((s) => s.thread.isRunning); |
|
|
| return ( |
| <ComposerPrimitive.Root |
| className='group/composer animate-in fade-in slide-in-from-bottom-2 mx-auto mb-2 w-full duration-300' |
| data-empty={isEmpty} |
| data-running={isRunning} |
| > |
| <div className='bg-base-200 ring-base-content/10 focus-within:ring-base-content/20 overflow-hidden rounded-2xl shadow-sm ring-1 ring-inset transition-all duration-200'> |
| <div className='flex items-end gap-0.5 p-1.5'> |
| {onClear && ( |
| <button |
| type='button' |
| onClick={onClear} |
| className='text-base-content hover:bg-base-300 mb-0.5 flex size-7 shrink-0 items-center justify-center rounded-full transition-colors' |
| aria-label='Clear chat' |
| > |
| <Trash2Icon className='size-3.5' /> |
| </button> |
| )} |
| |
| {onResetIndex && ( |
| <button |
| type='button' |
| onClick={onResetIndex} |
| className='text-base-content hover:bg-base-300 mb-0.5 flex size-7 shrink-0 items-center justify-center rounded-full transition-colors' |
| title='Re-index book' |
| aria-label='Re-index book' |
| > |
| <RefreshCwIcon className='size-3.5' /> |
| </button> |
| )} |
| |
| <ComposerPrimitive.Input |
| placeholder='Ask about this book...' |
| rows={1} |
| className='text-base-content placeholder:text-base-content/40 my-1 h-5 max-h-[200px] min-w-0 flex-1 resize-none bg-transparent text-sm leading-5 outline-none' |
| /> |
| |
| <div className='bg-base-content text-base-100 relative mb-0.5 size-7 shrink-0 rounded-full'> |
| <ComposerPrimitive.Send className='absolute inset-0 flex items-center justify-center transition-all duration-300 ease-out group-data-[empty=true]/composer:scale-0 group-data-[running=true]/composer:scale-0 group-data-[empty=true]/composer:opacity-0 group-data-[running=true]/composer:opacity-0'> |
| <ArrowUpIcon className='size-3.5' /> |
| </ComposerPrimitive.Send> |
| |
| <ComposerPrimitive.Cancel className='absolute inset-0 flex items-center justify-center transition-all duration-300 ease-out group-data-[running=false]/composer:scale-0 group-data-[running=false]/composer:opacity-0'> |
| <SquareIcon className='size-3' fill='currentColor' /> |
| </ComposerPrimitive.Cancel> |
| |
| {/* Placeholder when empty and not running */} |
| <div className='absolute inset-0 flex items-center justify-center transition-all duration-300 ease-out group-data-[empty=false]/composer:scale-0 group-data-[running=true]/composer:scale-0 group-data-[empty=false]/composer:opacity-0 group-data-[running=true]/composer:opacity-0'> |
| <ArrowUpIcon className='size-3.5 opacity-40' /> |
| </div> |
| </div> |
| </div> |
| </div> |
| </ComposerPrimitive.Root> |
| ); |
| }; |
|
|
| interface AssistantMessageProps { |
| sources?: ScoredChunk[]; |
| } |
|
|
| const AssistantMessage: FC<AssistantMessageProps> = ({ sources = [] }) => { |
| return ( |
| <MessagePrimitive.Root className='group/message animate-in fade-in slide-in-from-bottom-1 relative mx-auto mb-1 flex w-full flex-col pb-0.5 duration-200'> |
| <div className='flex flex-col items-start'> |
| <div className='w-full max-w-none'> |
| <div className='prose prose-xs text-base-content [&_*]:!text-base-content [&_a]:!text-primary [&_code]:!text-base-content select-text text-sm'> |
| <MessagePrimitive.Parts components={{ Text: MarkdownText }} /> |
| </div> |
| </div> |
| |
| <AssistantIf condition={(s) => s.message.status?.type !== 'running'}> |
| <div className='animate-in fade-in mt-0.5 flex h-6 w-full items-center justify-start gap-0.5 duration-300'> |
| <ActionBarPrimitive.Root className='-ml-1 flex items-center gap-0.5'> |
| <BranchPicker /> |
| {sources.length > 0 && ( |
| <DropdownMenu> |
| <DropdownMenuTrigger asChild> |
| <button |
| type='button' |
| className='text-base-content/40 hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors' |
| aria-label='View sources' |
| > |
| <BookOpenIcon className='size-3' /> |
| </button> |
| </DropdownMenuTrigger> |
| <DropdownMenuContent |
| align='start' |
| className='bg-base-100 border-base-content/10 w-80 p-2' |
| > |
| <div className='text-base-content/60 mb-2 px-1 text-[11px] font-semibold'> |
| Sources from book |
| </div> |
| <div className='flex flex-col gap-1.5'> |
| {sources.map((source, i) => ( |
| <div |
| key={source.id || i} |
| className='border-base-content/10 bg-base-200/50 rounded-lg border px-2 py-1.5 text-[11px]' |
| > |
| <div className='text-base-content font-medium'> |
| {source.chapterTitle || `Section ${source.sectionIndex + 1}`} |
| </div> |
| <div className='text-base-content/60 mt-0.5 line-clamp-3'> |
| {source.text} |
| </div> |
| </div> |
| ))} |
| </div> |
| </DropdownMenuContent> |
| </DropdownMenu> |
| )} |
| <ActionBarPrimitive.Reload className='text-base-content/40 hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors'> |
| <RefreshCwIcon className='size-3' /> |
| </ActionBarPrimitive.Reload> |
| <ActionBarPrimitive.Copy className='text-base-content/40 hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors'> |
| <AssistantIf condition={({ message }) => message.isCopied}> |
| <CheckIcon className='size-3' /> |
| </AssistantIf> |
| <AssistantIf condition={({ message }) => !message.isCopied}> |
| <CopyIcon className='size-3' /> |
| </AssistantIf> |
| </ActionBarPrimitive.Copy> |
| </ActionBarPrimitive.Root> |
| </div> |
| </AssistantIf> |
| </div> |
| </MessagePrimitive.Root> |
| ); |
| }; |
|
|
| const UserMessage: FC = () => { |
| return ( |
| <MessagePrimitive.Root |
| className='group/message animate-in fade-in slide-in-from-bottom-1 relative mx-auto mb-1 flex w-full flex-col pb-0.5 duration-200' |
| data-message-role='user' |
| > |
| <div className='flex flex-col items-end'> |
| <div className='border-base-content/10 bg-base-200 text-base-content relative max-w-[90%] rounded-2xl rounded-br-md border px-3 py-2'> |
| <div className='prose prose-xs text-base-content [&_*]:!text-base-content select-text text-sm'> |
| <MessagePrimitive.Parts components={{ Text: MarkdownText }} /> |
| </div> |
| </div> |
| <div className='mt-0.5 flex h-6 items-center justify-end gap-0.5'> |
| <ActionBarPrimitive.Root className='flex items-center gap-0.5'> |
| <ActionBarPrimitive.Edit className='text-base-content/40 hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors'> |
| <PencilIcon className='size-3' /> |
| </ActionBarPrimitive.Edit> |
| <ActionBarPrimitive.Copy className='text-base-content/40 hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors'> |
| <AssistantIf condition={({ message }) => message.isCopied}> |
| <CheckIcon className='size-3' /> |
| </AssistantIf> |
| <AssistantIf condition={({ message }) => !message.isCopied}> |
| <CopyIcon className='size-3' /> |
| </AssistantIf> |
| </ActionBarPrimitive.Copy> |
| </ActionBarPrimitive.Root> |
| </div> |
| </div> |
| </MessagePrimitive.Root> |
| ); |
| }; |
|
|
| const EditComposer: FC = () => { |
| return ( |
| <MessagePrimitive.Root className='mx-auto flex w-full flex-col py-2'> |
| <ComposerPrimitive.Root className='border-base-content/10 bg-base-200 ml-auto flex w-full max-w-[90%] flex-col overflow-hidden rounded-2xl border'> |
| <ComposerPrimitive.Input className='text-base-content min-h-10 w-full resize-none bg-transparent p-3 text-sm outline-none' /> |
| <div className='mx-2 mb-2 flex items-center gap-1.5 self-end'> |
| <ComposerPrimitive.Cancel asChild> |
| <Button variant='ghost' size='sm' className='h-7 px-2 text-xs'> |
| Cancel |
| </Button> |
| </ComposerPrimitive.Cancel> |
| <ComposerPrimitive.Send asChild> |
| <Button size='sm' className='h-7 px-2 text-xs'> |
| Update |
| </Button> |
| </ComposerPrimitive.Send> |
| </div> |
| </ComposerPrimitive.Root> |
| </MessagePrimitive.Root> |
| ); |
| }; |
|
|
| const BranchPicker: FC<{ className?: string }> = ({ className }) => { |
| return ( |
| <BranchPickerPrimitive.Root |
| hideWhenSingleBranch |
| className={cn('text-base-content/40 mr-0.5 inline-flex items-center text-[10px]', className)} |
| > |
| <BranchPickerPrimitive.Previous asChild> |
| <button |
| type='button' |
| className='hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors' |
| > |
| <ChevronLeftIcon className='size-3' /> |
| </button> |
| </BranchPickerPrimitive.Previous> |
| <span className='font-medium'> |
| <BranchPickerPrimitive.Number /> / <BranchPickerPrimitive.Count /> |
| </span> |
| <BranchPickerPrimitive.Next asChild> |
| <button |
| type='button' |
| className='hover:bg-base-200 hover:text-base-content flex size-6 items-center justify-center rounded-full transition-colors' |
| > |
| <ChevronRightIcon className='size-3' /> |
| </button> |
| </BranchPickerPrimitive.Next> |
| </BranchPickerPrimitive.Root> |
| ); |
| }; |
|
|
