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import React, { Fragment } from 'react';
import { StyleSheet, Text } from 'react-native';
import { Hit as AlgoliaHit } from '@algolia/client-search';
import {
getHighlightedParts,
getPropertyByPath,
} from 'instantsearch.js/es/lib/utils';
type HighlightPartProps = {
children: React.ReactNode;
isHighlighted: boolean;
};
function HighlightPart({ children, isHighlighted }: HighlightPartProps) {
return (
<Text style={isHighlighted ? styles.highlighted : styles.nonHighlighted}>
{children}
</Text>
);
}
type HighlightProps<THit> = {
hit: THit;
attribute: keyof THit | string[];
className?: string;
separator?: string;
};
export function Highlight<THit extends AlgoliaHit<Record<string, unknown>>>({
hit,
attribute,
separator = ', ',
}: HighlightProps<THit>) {
const { value: attributeValue = '' } =
getPropertyByPath(hit._highlightResult, attribute as string) || {};
const parts = getHighlightedParts(attributeValue);
return (
<>
{parts.map((part, partIndex) => {
if (Array.isArray(part)) {
const isLastPart = partIndex === parts.length - 1;
return (
<Fragment key={partIndex}>
{part.map((subPart, subPartIndex) => (
<HighlightPart
key={subPartIndex}
isHighlighted={subPart.isHighlighted}
>
{subPart.value}
</HighlightPart>
))}
{!isLastPart && separator}
</Fragment>
);
}
return (
<HighlightPart key={partIndex} isHighlighted={part.isHighlighted}>
{part.value}
</HighlightPart>
);
})}
</>
);
}
const styles = StyleSheet.create({
highlighted: {
fontWeight: 'bold',
backgroundColor: '#f5df4d',
color: '#6f6106',
},
nonHighlighted: {
fontWeight: 'normal',
backgroundColor: 'transparent',
color: 'black',
},
});
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