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silverbullet/web/components/fuzzy_search.ts

46 lines
1.8 KiB
TypeScript

import { FilterOption } from "../types.ts";
export const fuzzySearchAndSort = (
arr: FilterOption[],
searchPhrase: string,
): FilterOption[] => {
// Prepare regular expression: escape special characters, add '.*' around each character
const safePhrase = searchPhrase.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"); // escape special characters
const searchRegex = new RegExp(Array.from(safePhrase).join(".*"), "i"); // 'i' makes it case-insensitive
// Fuzzy matching on name using the regular expression
const filtered = arr.filter((item) => searchRegex.test(item.name));
// Sorting by exact match, whether match is in part after '/', then by orderId
filtered.sort((a, b) => {
const aNamePart = a.name.includes("/")
? a.name.split("/").pop() || ""
: a.name;
const bNamePart = b.name.includes("/")
? b.name.split("/").pop() || ""
: b.name;
const aMatchInPart = searchRegex.test(aNamePart);
const bMatchInPart = searchRegex.test(bNamePart);
// Check for exact match
const aExactMatch = a.name.toLowerCase() === searchPhrase.toLowerCase();
const bExactMatch = b.name.toLowerCase() === searchPhrase.toLowerCase();
if (aExactMatch !== bExactMatch) {
// If one is an exact match and the other is not, prioritize the exact match
return aExactMatch ? -1 : 1;
} else if (aMatchInPart !== bMatchInPart) {
// If one matches in the part after '/' and the other doesn't, prioritize the one that does
return aMatchInPart ? -1 : 1;
} else {
// If both match in the same part of name, prioritize by orderId
const aOrder = a.orderId !== undefined ? a.orderId : Infinity;
const bOrder = b.orderId !== undefined ? b.orderId : Infinity;
return aOrder - bOrder;
}
});
return filtered;
};