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import { FC, useCallback, useEffect } from 'react'
import {
EdgeById,
NodeById,
GraphSearchInputProps,
GraphSearchContextProviderProps
} from '@react-sigma/graph-search'
import { AsyncSearch } from '@/components/ui/AsyncSearch'
import { searchResultLimit } from '@/lib/constants'
import { useGraphStore } from '@/stores/graph'
import MiniSearch from 'minisearch'
import { useTranslation } from 'react-i18next'
// Message item identifier for search results
export const messageId = '__message_item'
// Search result option item interface
export interface OptionItem {
id: string
type: 'nodes' | 'edges' | 'message'
message?: string
}
const NodeOption = ({ id }: { id: string }) => {
const graph = useGraphStore.use.sigmaGraph()
if (!graph?.hasNode(id)) {
return null
}
return <NodeById id={id} />
}
function OptionComponent(item: OptionItem) {
return (
<div>
{item.type === 'nodes' && <NodeOption id={item.id} />}
{item.type === 'edges' && <EdgeById id={item.id} />}
{item.type === 'message' && <div>{item.message}</div>}
</div>
)
}
/**
* Component thats display the search input.
*/
export const GraphSearchInput = ({
onChange,
onFocus,
value
}: {
onChange: GraphSearchInputProps['onChange']
onFocus?: GraphSearchInputProps['onFocus']
value?: GraphSearchInputProps['value']
}) => {
const { t } = useTranslation()
const graph = useGraphStore.use.sigmaGraph()
const searchEngine = useGraphStore.use.searchEngine()
// Reset search engine when graph changes
useEffect(() => {
if (graph) {
useGraphStore.getState().resetSearchEngine()
}
}, [graph]);
// Create search engine when needed
useEffect(() => {
// Skip if no graph, empty graph, or search engine already exists
if (!graph || graph.nodes().length === 0 || searchEngine) {
return
}
// Create new search engine
const newSearchEngine = new MiniSearch({
idField: 'id',
fields: ['label'],
searchOptions: {
prefix: true,
fuzzy: 0.2,
boost: {
label: 2
}
}
})
// Add nodes to search engine
const documents = graph.nodes().map((id: string) => ({
id: id,
label: graph.getNodeAttribute(id, 'label')
}))
newSearchEngine.addAll(documents)
// Update search engine in store
useGraphStore.getState().setSearchEngine(newSearchEngine)
}, [graph, searchEngine])
/**
* Loading the options while the user is typing.
*/
const loadOptions = useCallback(
async (query?: string): Promise<OptionItem[]> => {
if (onFocus) onFocus(null)
// Safety checks to prevent crashes
if (!graph || !searchEngine) {
return []
}
// Verify graph has nodes before proceeding
if (graph.nodes().length === 0) {
return []
}
// If no query, return some nodes for user to select
if (!query) {
const nodeIds = graph.nodes()
.filter(id => graph.hasNode(id))
.slice(0, searchResultLimit)
return nodeIds.map(id => ({
id,
type: 'nodes'
}))
}
// If has query, search nodes and verify they still exist
const result: OptionItem[] = searchEngine.search(query)
.filter((r: { id: string }) => graph.hasNode(r.id))
.map((r: { id: string }) => ({
id: r.id,
type: 'nodes'
}))
// prettier-ignore
return result.length <= searchResultLimit
? result
: [
...result.slice(0, searchResultLimit),
{
type: 'message',
id: messageId,
message: t('graphPanel.search.message', { count: result.length - searchResultLimit })
}
]
},
[graph, searchEngine, onFocus, t]
)
return (
<AsyncSearch
className="bg-background/60 w-24 rounded-xl border-1 opacity-60 backdrop-blur-lg transition-all hover:w-fit hover:opacity-100"
fetcher={loadOptions}
renderOption={OptionComponent}
getOptionValue={(item) => item.id}
value={value && value.type !== 'message' ? value.id : null}
onChange={(id) => {
if (id !== messageId) onChange(id ? { id, type: 'nodes' } : null)
}}
onFocus={(id) => {
if (id !== messageId && onFocus) onFocus(id ? { id, type: 'nodes' } : null)
}}
label={'item'}
placeholder={t('graphPanel.search.placeholder')}
/>
)
}
/**
* Component that display the search.
*/
const GraphSearch: FC<GraphSearchInputProps & GraphSearchContextProviderProps> = ({ ...props }) => {
return <GraphSearchInput {...props} />
}
export default GraphSearch
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