@directus/api/dist/utils/get-default-index-name.js

Directus is a real-time API and App dashboard for managing SQL database content

import { getSimpleHash } from "@directus/utils";

//#region src/utils/get-default-index-name.ts
/**
* Generate an index name for a given collection + fields combination.
*
* Based on the default index name generation of knex, with the caveat that it limits the index to options.maxLength
* which defaults to 60 characters.
*
* @see
* https://github.com/knex/knex/blob/fff6eb15d7088d4198650a2c6e673dedaf3b8f36/lib/schema/tablecompiler.js#L282-L297
*/
function getDefaultIndexName(type, collection, fields, options) {
	const maxLength = options?.maxLength ?? 60;
	if (!Array.isArray(fields)) fields = fields ? [fields] : [];
	const indexName = (collection.replace(/\.|-/g, "_") + "_" + fields.join("_") + "_" + type).toLowerCase();
	if (indexName.length <= maxLength) return indexName;
	const suffix = `__${getSimpleHash(indexName)}_${type}`;
	return `${indexName.substring(0, maxLength - suffix.length)}${suffix}`;
}

//#endregion
export { getDefaultIndexName };