// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// 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 querycoord

import (
	"context"
	"math/rand"
	"os"
	"strconv"
	"testing"
	"time"

	"go.uber.org/zap"

	"github.com/milvus-io/milvus/internal/log"
	"github.com/milvus-io/milvus/internal/msgstream"
	"github.com/milvus-io/milvus/internal/proto/internalpb"
)

func setup() {
	Params.Init()
}

func refreshParams() {
	rand.Seed(time.Now().UnixNano())
	suffix := "-test-query-Coord" + strconv.FormatInt(rand.Int63(), 10)
	Params.StatsChannelName = Params.StatsChannelName + suffix
	Params.TimeTickChannelName = Params.TimeTickChannelName + suffix
	Params.MetaRootPath = Params.MetaRootPath + suffix
}

func TestMain(m *testing.M) {
	setup()
	//refreshChannelNames()
	exitCode := m.Run()
	os.Exit(exitCode)
}

func NewQueryCoordTest(ctx context.Context, factory msgstream.Factory) (*QueryCoord, error) {
	refreshParams()
	rand.Seed(time.Now().UnixNano())
	queryChannels := make([]*queryChannelInfo, 0)
	channelID := len(queryChannels)
	searchPrefix := Params.SearchChannelPrefix
	searchResultPrefix := Params.SearchResultChannelPrefix
	allocatedQueryChannel := searchPrefix + "-" + strconv.FormatInt(int64(channelID), 10)
	allocatedQueryResultChannel := searchResultPrefix + "-" + strconv.FormatInt(int64(channelID), 10)

	queryChannels = append(queryChannels, &queryChannelInfo{
		requestChannel:  allocatedQueryChannel,
		responseChannel: allocatedQueryResultChannel,
	})

	ctx1, cancel := context.WithCancel(ctx)
	service := &QueryCoord{
		loopCtx:    ctx1,
		loopCancel: cancel,
		msFactory:  factory,
		newNodeFn:  newQueryNodeTest,
	}

	service.UpdateStateCode(internalpb.StateCode_Abnormal)
	log.Debug("query coordinator", zap.Any("queryChannels", queryChannels))
	return service, nil
}