Files
outline/server/utils/collectionIndexing.ts
2022-01-06 21:25:42 -08:00

45 lines
1.3 KiB
TypeScript

import fractionalIndex from "fractional-index";
import naturalSort from "@shared/utils/naturalSort";
import { Collection } from "@server/models";
export default async function collectionIndexing(teamId: string) {
const collections = await Collection.findAll({
where: {
teamId,
deletedAt: null,
},
//no point in maintaining index of deleted collections.
attributes: ["id", "index", "name"],
});
let sortableCollections: [Collection, string | null][] = collections.map(
(collection) => {
return [collection, collection.index];
}
);
sortableCollections = naturalSort(
sortableCollections,
(collection) => collection[0].name
);
//for each collection with null index, use previous collection index to create new index
let previousCollectionIndex = null;
for (const collection of sortableCollections) {
if (collection[1] === null) {
const index = fractionalIndex(previousCollectionIndex, collection[1]);
collection[0].index = index;
await collection[0].save();
}
previousCollectionIndex = collection[0].index;
}
const indexedCollections = {};
sortableCollections.forEach((collection) => {
indexedCollections[collection[0].id] = collection[0].index;
});
return indexedCollections;
}