// 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 mw

import (
	"context"

	"github.com/cloudwego/kitex/pkg/endpoint"
	"github.com/cloudwego/kitex/pkg/klog"
	"github.com/cloudwego/kitex/pkg/rpcinfo"
)

var _ endpoint.Middleware = ServerMiddleware

// ServerMiddleware server mw print client address
func ServerMiddleware(next endpoint.Endpoint) endpoint.Endpoint {
	return func(ctx context.Context, req, resp interface{}) (err error) {
		ri := rpcinfo.GetRPCInfo(ctx)
		// get client information
		klog.Infof("client address: %v\n", ri.From().Address())
		if err = next(ctx, req, resp); err != nil {
			return err
		}
		return nil
	}
}
