dify/web/app/components/workflow/nodes/knowledge-retrieval/node.tsx

import type { FC } from 'react'
import type { KnowledgeRetrievalNodeType } from './types'
import type { NodeProps } from '@/app/components/workflow/types'
import type { DataSet } from '@/models/datasets'
import * as React from 'react'
import { useEffect, useState } from 'react'
import AppIcon from '@/app/components/base/app-icon'
import { useDatasetsDetailStore } from '../../datasets-detail-store/store'

const Node: FC<NodeProps<KnowledgeRetrievalNodeType>> = ({
  data,
}) => {
  const [selectedDatasets, setSelectedDatasets] = useState<DataSet[]>([])
  const datasetsDetail = useDatasetsDetailStore(s => s.datasetsDetail)

  useEffect(() => {
    if (data.dataset_ids?.length > 0) {
      const dataSetsWithDetail = data.dataset_ids.reduce<DataSet[]>((acc, id) => {
        if (datasetsDetail[id])
          acc.push(datasetsDetail[id])
        return acc
      }, [])
      setSelectedDatasets(dataSetsWithDetail)
    }
    else {
      setSelectedDatasets([])
    }
  }, [data.dataset_ids, datasetsDetail])

  if (!selectedDatasets.length)
    return null

  return (
    <div className="mb-1 px-3 py-1">
      <div className="space-y-0.5">
        {selectedDatasets.map(({ id, name, icon_info }) => {
          const iconInfo = icon_info || {
            icon: '📙',
            icon_type: 'emoji' as const,
            icon_background: '#FFF4ED',
            icon_url: '',
          }
          return (
            <div key={id} className="flex h-[26px] items-center gap-x-1 rounded-md bg-workflow-block-parma-bg px-1">
              <AppIcon
                size="xs"
                iconType={iconInfo.icon_type}
                icon={iconInfo.icon}
                background={iconInfo.icon_type === 'image' ? undefined : iconInfo.icon_background}
                imageUrl={iconInfo.icon_type === 'image' ? iconInfo.icon_url : undefined}
                className="shrink-0"
              />
              <div className="system-xs-regular w-0 grow truncate text-text-secondary">
                {name}
              </div>
            </div>
          )
        })}
      </div>
    </div>
  )
}

export default React.memo(Node)