/*
 * Copyright 2022 CloudWeGo Authors
 *
 * 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.
 */

package client

import (
	"context"

	"github.com/cloudwego/hertz/pkg/protocol"
)

// Endpoint represent one method for calling from remote.
type Endpoint func(ctx context.Context, req *protocol.Request, resp *protocol.Response) (err error)

// Middleware deal with input Endpoint and output Endpoint.
type Middleware func(Endpoint) Endpoint

// Chain connect middlewares into one middleware.
func chain(mws ...Middleware) Middleware {
	return func(next Endpoint) Endpoint {
		for i := len(mws) - 1; i >= 0; i-- {
			next = mws[i](next)
		}
		return next
	}
}
