core: add paginator keys

packages/hydrooj/src/service/server.ts

@@ -9,6 +9,7 @@ import Body from 'koa-body';
 import Compress from 'koa-compress';
 import proxy from 'koa-proxies';
 import cache from 'koa-static-cache';
+import type { FindCursor } from 'mongodb';
 import WebSocket from 'ws';
 import { Counter, isClass, parseMemoryMB } from '@hydrooj/utils/lib/utils';
 import { Context, Service } from '../context';
@@ -18,6 +19,7 @@ import {
     PrivilegeError, UserFacingError,
 } from '../error';
 import { DomainDoc } from '../interface';
+import paginate from '../lib/paginate';
 import serializer from '../lib/serializer';
 import { Types } from '../lib/validator';
 import { Logger } from '../logger';
@@ -150,6 +152,10 @@ export class HandlerCommon {
         await opcount.inc(op, id, periodSecs, maxOperations);
     }
 
+    paginate<T>(cursor: FindCursor<T>, page: number, key: string) {
+        return paginate(cursor, page, this.ctx.setting.get(`pagination.${key}`));
+    }
+
     renderTitle(str: string) {
         const name = this.domain?.ui?.name || system.get('server.name');
         if (this.UiContext.extraTitleContent) return `${this.translate(str)} - ${this.UiContext.extraTitleContent} - ${name}`;