/**
* (c) Copyright Ascensio System SIA 2025
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @license
*/
/**
* @module
* @mergeModuleWith util/express
*/
/* eslint-disable typescript/consistent-type-definitions */
import cors_ from "cors"
import type express from "express"
export type CorsOptions = {
origin: string[]
maxAge: number
methods: string[]
allowedHeaders: string[]
exposedHeaders: string[]
}
export function cors(o: CorsOptions): express.Handler {
let co: cors_.CorsOptions = {}
if (o.origin.length !== 0) {
co.origin = o.origin
}
if (o.methods.length !== 0) {
co.methods = o.methods
}
if (o.allowedHeaders.length !== 0) {
co.allowedHeaders = [...new Set(o.allowedHeaders)].sort()
}
if (o.exposedHeaders.length !== 0) {
co.exposedHeaders = [...new Set(o.exposedHeaders)].sort()
}
if (o.maxAge) {
co.maxAge = o.maxAge / 1000
}
return cors_(co)
}
