Files
permit-api/src/pagination.ts

97 lines
2.5 KiB
TypeScript

import { z } from "zod";
import { MongoFilter, parse } from "./utils/queryParser";
export const pageMetadata = z.object({
count: z.number(),
page: z.number(),
pageSize: z.number(),
});
export const pageQueryParams = z.object({
page: z.number().optional(),
pageSize: z.number().optional(),
sort: z.string().optional(),
filter: z.string().optional(),
searchToken: z.string().optional(),
});
export type PageQueryParams = z.infer<typeof pageQueryParams>;
export function getSortObject(
params: PageQueryParams,
validFields: Array<string>
) {
const sortObj: Record<string, 1 | -1> = {};
if (params.sort && params.sort != "") {
const sortOptions = params.sort.split(",");
sortOptions.forEach((item) => {
const order = item.startsWith("-") ? -1 : 1;
const field = item.replace("-", "").trim();
if (validFields.includes(field)) sortObj[field] = order;
});
}
if (Object.keys(sortObj).length == 0) sortObj["createdAt"] = -1;
return sortObj;
}
export function getFilterObject(params: PageQueryParams) {
if (params.filter && params.filter != "") {
const parsedQuery = parse(params.filter.split("|")).filter(
(query) => Object.keys(query).length > 0
);
return parsedQuery;
}
}
export function getTaggedUsersFilter(
filterObj: MongoFilter[],
sortObj: Record<string, 1 | -1>
) {
const taggedUserFilterIndex = filterObj.findIndex((item) =>
Object.keys(item).includes("taggedUsers")
);
let taggedFilter = [];
if (taggedUserFilterIndex != -1) {
const filterItem = filterObj[taggedUserFilterIndex].taggedUsers;
let filterValues = null;
let notFlag = false;
if (filterItem["$eq"]) {
filterValues = [filterItem["$eq"]];
} else if (filterItem["$ne"]) {
filterValues = [filterItem["$ne"]];
notFlag = true;
} else if (filterItem["$in"]) {
filterValues = filterItem["$in"];
} else {
filterValues = filterItem["$nin"];
notFlag = true;
}
const condition = notFlag ? { $exists: false } : { $exists: true };
taggedFilter = [
{
$addFields: {
taggedUsersFilter: {
$filter: {
input: "$taggedUsers",
as: "user",
cond: { $in: ["$$user.userId", filterValues] },
},
},
},
},
{ $match: { "taggedUsersFilter.0": condition } },
{ $sort: { "taggedUsersFilter.taggedAt": sortObj.taggedUsers ?? -1 } },
];
}
return { taggedFilter, taggedUserFilterIndex };
}