/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 dubbo

import (
	"bytes"
	"context"
	"sync"
	"testing"
	"time"
)

import (
	hessian "github.com/apache/dubbo-go-hessian2"
	"github.com/opentracing/opentracing-go"
	perrors "github.com/pkg/errors"
	"github.com/stretchr/testify/assert"
)

import (
	"github.com/apache/dubbo-go/common"
	"github.com/apache/dubbo-go/common/constant"
	"github.com/apache/dubbo-go/common/proxy/proxy_factory"
	"github.com/apache/dubbo-go/protocol"
	"github.com/apache/dubbo-go/protocol/invocation"
	"github.com/apache/dubbo-go/remoting"
	"github.com/apache/dubbo-go/remoting/getty"
)

func TestDubboInvokerInvoke(t *testing.T) {
	proto, url := InitTest(t)

	c := getExchangeClient(url)

	invoker := NewDubboInvoker(url, c)
	user := &User{}

	inv := invocation.NewRPCInvocationWithOptions(invocation.WithMethodName("GetUser"), invocation.WithArguments([]interface{}{"1", "username"}),
		invocation.WithReply(user), invocation.WithAttachments(map[string]interface{}{"test_key": "test_value"}))

	// Call
	res := invoker.Invoke(context.Background(), inv)
	assert.NoError(t, res.Error())
	assert.Equal(t, User{Id: "1", Name: "username"}, *res.Result().(*User))

	// CallOneway
	inv.SetAttachments(constant.ASYNC_KEY, "true")
	res = invoker.Invoke(context.Background(), inv)
	assert.NoError(t, res.Error())

	// AsyncCall
	lock := sync.Mutex{}
	lock.Lock()
	inv.SetCallBack(func(response common.CallbackResponse) {
		r := response.(remoting.AsyncCallbackResponse)
		rst := *r.Reply.(*remoting.Response).Result.(*protocol.RPCResult)
		assert.Equal(t, User{Id: "1", Name: "username"}, *(rst.Rest.(*User)))
		// assert.Equal(t, User{ID: "1", Name: "username"}, *r.Reply.(*Response).reply.(*User))
		lock.Unlock()
	})
	res = invoker.Invoke(context.Background(), inv)
	assert.NoError(t, res.Error())

	// Err_No_Reply
	inv.SetAttachments(constant.ASYNC_KEY, "false")
	inv.SetReply(nil)
	res = invoker.Invoke(context.Background(), inv)
	assert.EqualError(t, res.Error(), "request need @response")

	// testing appendCtx
	span, ctx := opentracing.StartSpanFromContext(context.Background(), "TestOperation")
	invoker.Invoke(ctx, inv)
	span.Finish()

	// destroy
	lock.Lock()
	defer lock.Unlock()
	proto.Destroy()
}

func InitTest(t *testing.T) (protocol.Protocol, *common.URL) {
	hessian.RegisterPOJO(&User{})

	methods, err := common.ServiceMap.Register("com.ikurento.user.UserProvider", "dubbo", "", "", &UserProvider{})
	assert.NoError(t, err)
	assert.Equal(t, "GetBigPkg,GetUser,GetUser0,GetUser1,GetUser2,GetUser3,GetUser4,GetUser5,GetUser6", methods)

	// config
	getty.SetClientConf(getty.ClientConfig{
		ConnectionNum:   2,
		HeartbeatPeriod: "5s",
		SessionTimeout:  "20s",
		PoolTTL:         600,
		PoolSize:        64,
		GettySessionParam: getty.GettySessionParam{
			CompressEncoding: false,
			TcpNoDelay:       true,
			TcpKeepAlive:     true,
			KeepAlivePeriod:  "120s",
			TcpRBufSize:      262144,
			TcpWBufSize:      65536,
			PkgWQSize:        512,
			TcpReadTimeout:   "4s",
			TcpWriteTimeout:  "5s",
			WaitTimeout:      "1s",
			MaxMsgLen:        10240000000,
			SessionName:      "client",
		},
	})
	getty.SetServerConfig(getty.ServerConfig{
		SessionNumber:  700,
		SessionTimeout: "20s",
		GettySessionParam: getty.GettySessionParam{
			CompressEncoding: false,
			TcpNoDelay:       true,
			TcpKeepAlive:     true,
			KeepAlivePeriod:  "120s",
			TcpRBufSize:      262144,
			TcpWBufSize:      65536,
			PkgWQSize:        512,
			TcpReadTimeout:   "1s",
			TcpWriteTimeout:  "5s",
			WaitTimeout:      "1s",
			MaxMsgLen:        10240000000,
			SessionName:      "server",
		},
	})

	// Export
	proto := GetProtocol()
	url, err := common.NewURL("dubbo://127.0.0.1:20702/UserProvider?anyhost=true&" +
		"application=BDTService&category=providers&default.timeout=10000&dubbo=dubbo-provider-golang-1.0.0&" +
		"environment=dev&interface=com.ikurento.user.UserProvider&ip=192.168.56.1&methods=GetUser%2C&" +
		"module=dubbogo+user-info+server&org=ikurento.com&owner=ZX&pid=1447&revision=0.0.1&" +
		"side=provider&timeout=3000&timestamp=1556509797245&bean.name=UserProvider")
	assert.NoError(t, err)
	proto.Export(&proxy_factory.ProxyInvoker{
		BaseInvoker: *protocol.NewBaseInvoker(url),
	})

	time.Sleep(time.Second * 2)

	return proto, url
}

//////////////////////////////////
// provider
//////////////////////////////////

type (
	User struct {
		Id   string `json:"id"`
		Name string `json:"name"`
	}

	UserProvider struct { // user map[string]User
	}
)

// size:4801228
func (u *UserProvider) GetBigPkg(ctx context.Context, req []interface{}, rsp *User) error {
	argBuf := new(bytes.Buffer)
	for i := 0; i < 800; i++ {
		// use chinese for test
		argBuf.WriteString("击鼓其镗，踊跃用兵。土国城漕，我独南行。从孙子仲，平陈与宋。不我以归，忧心有忡。爰居爰处？爰丧其马？于以求之？于林之下。死生契阔，与子成说。执子之手，与子偕老。于嗟阔兮，不我活兮。于嗟洵兮，不我信兮。")
	}
	rsp.Id = argBuf.String()
	rsp.Name = argBuf.String()
	return nil
}

func (u *UserProvider) GetUser(ctx context.Context, req []interface{}, rsp *User) error {
	rsp.Id = req[0].(string)
	rsp.Name = req[1].(string)
	return nil
}

func (u *UserProvider) GetUser0(id string, k *User, name string) (User, error) {
	return User{Id: id, Name: name}, nil
}

func (u *UserProvider) GetUser1() error {
	return nil
}

func (u *UserProvider) GetUser2() error {
	return perrors.New("error")
}

func (u *UserProvider) GetUser3(rsp *[]interface{}) error {
	*rsp = append(*rsp, User{Id: "1", Name: "username"})
	return nil
}

func (u *UserProvider) GetUser4(ctx context.Context, req []interface{}) ([]interface{}, error) {
	return []interface{}{User{Id: req[0].([]interface{})[0].(string), Name: req[0].([]interface{})[1].(string)}}, nil
}

func (u *UserProvider) GetUser5(ctx context.Context, req []interface{}) (map[interface{}]interface{}, error) {
	return map[interface{}]interface{}{"key": User{Id: req[0].(map[interface{}]interface{})["id"].(string), Name: req[0].(map[interface{}]interface{})["name"].(string)}}, nil
}

func (u *UserProvider) GetUser6(id int64) (*User, error) {
	if id == 0 {
		return nil, nil
	}
	return &User{Id: "1"}, nil
}

func (u *UserProvider) Reference() string {
	return "UserProvider"
}

func (u User) JavaClassName() string {
	return "com.ikurento.user.User"
}