/*
 * Minio Cloud Storage, (C) 2017 Minio, Inc.
 *
 * 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 cmd

import (
	"net/http"
	"net/http/httptest"
	"testing"

	router "github.com/gorilla/mux"
)

type ArithArgs struct {
	A, B int
}

type ArithReply struct {
	C int
}

type Arith int

// Some of Arith's methods have value args, some have pointer args. That's deliberate.

func (t *Arith) Add(args ArithArgs, reply *ArithReply) error {
	reply.C = args.A + args.B
	return nil
}

func TestGoHTTPRPC(t *testing.T) {
	newServer := newRPCServer()
	newServer.Register(new(Arith))

	mux := router.NewRouter().SkipClean(true)
	mux.Path("/foo").Handler(newServer)

	httpServer := httptest.NewServer(mux)
	defer httpServer.Close()

	client := newRPCClient(httpServer.Listener.Addr().String(), "/foo", false)
	defer client.Close()

	// Synchronous calls
	args := &ArithArgs{7, 8}
	reply := new(ArithReply)
	if err := client.Call("Arith.Add", args, reply); err != nil {
		t.Errorf("Add: expected no error but got string %v", err)
	}

	if reply.C != args.A+args.B {
		t.Errorf("Add: expected %d got %d", reply.C, args.A+args.B)
	}

	resp, err := http.Get(httpServer.URL + "/foo")
	if err != nil {
		t.Fatal(err)
	}

	if resp.StatusCode != http.StatusMethodNotAllowed {
		t.Errorf("Expected %d, got %d", http.StatusMethodNotAllowed, resp.StatusCode)
	}
}