40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
// @flow
|
|
import fractionalIndex from "fractional-index";
|
|
import naturalSort from "../../shared/utils/naturalSort";
|
|
import { Collection } from "../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 = 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;
|
|
}
|