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'use strict';
import {mkdir, writeFile} from 'node:fs/promises';
import * as path from 'node:path';
import FlexSearch from 'flexsearch';
import {logError, logInfo, logWarn} from '#cli';
import {makeSearchIndex, populateSearchIndex, searchSpec} from '#search-spec';
import {stitchArrays} from '#sugar';
async function exportIndexToJSON(index) {
const results = {};
await index.export((key, data) => {
results[key] = data;
})
return results;
}
export async function writeSearchData({
wikiCachePath,
wikiData,
}) {
if (!wikiCachePath) {
throw new Error(`Expected wikiCachePath to write into`);
}
// Basic flow is:
// 1. Define schema for type
// 2. Add documents to index
// 3. Save index to exportable json
const keys =
Object.keys(searchSpec);
const descriptors =
Object.values(searchSpec);
const indexes =
descriptors
.map(descriptor =>
makeSearchIndex(descriptor, {FlexSearch}));
stitchArrays({
index: indexes,
descriptor: descriptors,
}).forEach(({index, descriptor}) =>
populateSearchIndex(index, descriptor, {wikiData}));
const jsonIndexes =
await Promise.all(indexes.map(exportIndexToJSON));
const searchData =
Object.fromEntries(
stitchArrays({
key: keys,
value: jsonIndexes,
}).map(({key, value}) => [key, value]));
const outputDirectory =
path.join(wikiCachePath, 'search');
const outputFile =
path.join(outputDirectory, 'index.json');
await mkdir(outputDirectory, {recursive: true});
await writeFile(outputFile, JSON.stringify(searchData));
logInfo`Search index successfully written.`;
}
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