import { useEffect, useMemo, useRef, useState } from 'react'
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import type { FC } from 'react'
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import { useTranslation } from 'react-i18next'
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import { RiArrowDownSLine } from '@remixicon/react'
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import type { CitationItem } from '../type'
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import Popup from './popup'
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export type Resources = {
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documentId: string
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documentName: string
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dataSourceType: string
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sources: CitationItem[]
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}
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type CitationProps = {
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data: CitationItem[]
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showHitInfo?: boolean
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containerClassName?: string
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}
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const Citation: FC<CitationProps> = ({
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data,
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showHitInfo,
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containerClassName = 'chat-answer-container',
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}) => {
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const { t } = useTranslation()
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const elesRef = useRef<HTMLDivElement[]>([])
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const [limitNumberInOneLine, setLimitNumberInOneLine] = useState(0)
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const [showMore, setShowMore] = useState(false)
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const resources = useMemo(() => data.reduce((prev: Resources[], next) => {
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const documentId = next.document_id
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const documentName = next.document_name
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const dataSourceType = next.data_source_type
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const documentIndex = prev.findIndex(i => i.documentId === documentId)
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if (documentIndex > -1) {
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prev[documentIndex].sources.push(next)
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}
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else {
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prev.push({
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documentId,
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documentName,
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dataSourceType,
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sources: [next],
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})
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}
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return prev
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}, []), [data])
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const handleAdjustResourcesLayout = () => {
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const containerWidth = document.querySelector(`.${containerClassName}`)!.clientWidth - 40
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let totalWidth = 0
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for (let i = 0; i < resources.length; i++) {
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totalWidth += elesRef.current[i].clientWidth
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if (totalWidth + i * 4 > containerWidth!) {
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totalWidth -= elesRef.current[i].clientWidth
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if (totalWidth + 34 > containerWidth!)
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setLimitNumberInOneLine(i - 1)
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else
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setLimitNumberInOneLine(i)
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break
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}
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else {
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setLimitNumberInOneLine(i + 1)
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}
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}
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}
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useEffect(() => {
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handleAdjustResourcesLayout()
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}, [])
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const resourcesLength = resources.length
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return (
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<div className='mt-3 -mb-1'>
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<div className='flex items-center mb-2 text-xs font-medium text-gray-500'>
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{t('common.chat.citation.title')}
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<div className='grow ml-2 h-[1px] bg-black/5' />
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</div>
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<div className='relative flex flex-wrap'>
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{
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resources.map((res, index) => (
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<div
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key={index}
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className='absolute top-0 left-0 w-auto mr-1 mb-1 pl-7 pr-2 max-w-[240px] h-7 text-xs whitespace-nowrap opacity-0 -z-10'
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ref={ele => (elesRef.current[index] = ele!)}
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>
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{res.documentName}
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</div>
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))
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}
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{
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resources.slice(0, showMore ? resourcesLength : limitNumberInOneLine).map((res, index) => (
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<div key={index} className='mr-1 mb-1 cursor-pointer'>
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<Popup
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data={res}
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showHitInfo={showHitInfo}
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/>
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</div>
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))
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}
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{
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limitNumberInOneLine < resourcesLength && (
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<div
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className='flex items-center px-2 h-7 bg-white rounded-lg text-xs font-medium text-gray-500 cursor-pointer'
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onClick={() => setShowMore(v => !v)}
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>
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{
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!showMore
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? `+ ${resourcesLength - limitNumberInOneLine}`
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: <RiArrowDownSLine className='w-4 h-4 text-gray-600 rotate-180' />
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}
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</div>
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)
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}
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</div>
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</div>
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)
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}
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export default Citation
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