package master

import (
	"context"
	"log"
	"strconv"
	"testing"

	"github.com/golang/protobuf/proto"
	"github.com/stretchr/testify/assert"
	"github.com/zilliztech/milvus-distributed/internal/conf"
	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
	"github.com/zilliztech/milvus-distributed/internal/proto/internalpb"
	"github.com/zilliztech/milvus-distributed/internal/proto/masterpb"
	"github.com/zilliztech/milvus-distributed/internal/proto/schemapb"
	"github.com/zilliztech/milvus-distributed/internal/proto/servicepb"
	"go.etcd.io/etcd/clientv3"
	"google.golang.org/grpc"
)

func TestMaster_CreateCollectionTask(t *testing.T) {
	conf.LoadConfig("config.yaml")
	ctx, cancel := context.WithCancel(context.TODO())
	defer cancel()

	etcdPort := strconv.Itoa(int(conf.Config.Etcd.Port))
	etcdAddr := "127.0.0.1:" + etcdPort

	etcdCli, err := clientv3.New(clientv3.Config{Endpoints: []string{etcdAddr}})
	assert.Nil(t, err)
	_, err = etcdCli.Delete(ctx, "/test/root", clientv3.WithPrefix())
	assert.Nil(t, err)

	svr, err := CreateServer(ctx, "/test/root/kv", "/test/root/meta", "/test/root/meta/tso", []string{etcdAddr})
	assert.Nil(t, err)
	err = svr.Run(10002)
	assert.Nil(t, err)

	conn, err := grpc.DialContext(ctx, "127.0.0.1:10002", grpc.WithInsecure(), grpc.WithBlock())
	assert.Nil(t, err)
	defer conn.Close()

	cli := masterpb.NewMasterClient(conn)
	sch := schemapb.CollectionSchema{
		Name:        "col1",
		Description: "test collection",
		AutoID:      false,
		Fields: []*schemapb.FieldSchema{
			{
				Name:        "col1_f1",
				Description: "test collection filed 1",
				DataType:    schemapb.DataType_VECTOR_FLOAT,
				TypeParams: []*commonpb.KeyValuePair{
					{
						Key:   "col1_f1_tk1",
						Value: "col1_f1_tv1",
					},
					{
						Key:   "col1_f1_tk2",
						Value: "col1_f1_tv2",
					},
				},
				IndexParams: []*commonpb.KeyValuePair{
					{
						Key:   "col1_f1_ik1",
						Value: "col1_f1_iv1",
					},
					{
						Key:   "col1_f1_ik2",
						Value: "col1_f1_iv2",
					},
				},
			},
			{
				Name:        "col1_f2",
				Description: "test collection filed 2",
				DataType:    schemapb.DataType_VECTOR_BINARY,
				TypeParams: []*commonpb.KeyValuePair{
					{
						Key:   "col1_f2_tk1",
						Value: "col1_f2_tv1",
					},
					{
						Key:   "col1_f2_tk2",
						Value: "col1_f2_tv2",
					},
				},
				IndexParams: []*commonpb.KeyValuePair{
					{
						Key:   "col1_f2_ik1",
						Value: "col1_f2_iv1",
					},
					{
						Key:   "col1_f2_ik2",
						Value: "col1_f2_iv2",
					},
				},
			},
		},
	}
	schemaBytes, err := proto.Marshal(&sch)
	assert.Nil(t, err)

	req := internalpb.CreateCollectionRequest{
		MsgType:   internalpb.MsgType_kCreateCollection,
		ReqID:     1,
		Timestamp: 11,
		ProxyID:   1,
		Schema:    &commonpb.Blob{Value: schemaBytes},
	}
	log.Printf("... [Create] collection col1\n")
	st, err := cli.CreateCollection(ctx, &req)
	assert.Nil(t, err)
	assert.Equal(t, st.ErrorCode, commonpb.ErrorCode_SUCCESS)

	collMeta, err := svr.mt.GetCollectionByName(sch.Name)
	assert.Nil(t, err)
	t.Logf("collection id = %d", collMeta.ID)
	assert.Equal(t, collMeta.CreateTime, uint64(11))
	assert.Equal(t, collMeta.Schema.Name, "col1")
	assert.Equal(t, collMeta.Schema.AutoID, false)
	assert.Equal(t, len(collMeta.Schema.Fields), 2)
	assert.Equal(t, collMeta.Schema.Fields[0].Name, "col1_f1")
	assert.Equal(t, collMeta.Schema.Fields[1].Name, "col1_f2")
	assert.Equal(t, collMeta.Schema.Fields[0].DataType, schemapb.DataType_VECTOR_FLOAT)
	assert.Equal(t, collMeta.Schema.Fields[1].DataType, schemapb.DataType_VECTOR_BINARY)
	assert.Equal(t, len(collMeta.Schema.Fields[0].TypeParams), 2)
	assert.Equal(t, len(collMeta.Schema.Fields[0].IndexParams), 2)
	assert.Equal(t, len(collMeta.Schema.Fields[1].TypeParams), 2)
	assert.Equal(t, len(collMeta.Schema.Fields[1].IndexParams), 2)
	assert.Equal(t, collMeta.Schema.Fields[0].TypeParams[0].Key, "col1_f1_tk1")
	assert.Equal(t, collMeta.Schema.Fields[0].TypeParams[1].Key, "col1_f1_tk2")
	assert.Equal(t, collMeta.Schema.Fields[0].TypeParams[0].Value, "col1_f1_tv1")
	assert.Equal(t, collMeta.Schema.Fields[0].TypeParams[1].Value, "col1_f1_tv2")
	assert.Equal(t, collMeta.Schema.Fields[0].IndexParams[0].Key, "col1_f1_ik1")
	assert.Equal(t, collMeta.Schema.Fields[0].IndexParams[1].Key, "col1_f1_ik2")
	assert.Equal(t, collMeta.Schema.Fields[0].IndexParams[0].Value, "col1_f1_iv1")
	assert.Equal(t, collMeta.Schema.Fields[0].IndexParams[1].Value, "col1_f1_iv2")

	assert.Equal(t, collMeta.Schema.Fields[1].TypeParams[0].Key, "col1_f2_tk1")
	assert.Equal(t, collMeta.Schema.Fields[1].TypeParams[1].Key, "col1_f2_tk2")
	assert.Equal(t, collMeta.Schema.Fields[1].TypeParams[0].Value, "col1_f2_tv1")
	assert.Equal(t, collMeta.Schema.Fields[1].TypeParams[1].Value, "col1_f2_tv2")
	assert.Equal(t, collMeta.Schema.Fields[1].IndexParams[0].Key, "col1_f2_ik1")
	assert.Equal(t, collMeta.Schema.Fields[1].IndexParams[1].Key, "col1_f2_ik2")
	assert.Equal(t, collMeta.Schema.Fields[1].IndexParams[0].Value, "col1_f2_iv1")
	assert.Equal(t, collMeta.Schema.Fields[1].IndexParams[1].Value, "col1_f2_iv2")

	req.Timestamp = Timestamp(10)
	st, err = cli.CreateCollection(ctx, &req)
	assert.Nil(t, err)
	assert.NotEqual(t, st.ErrorCode, commonpb.ErrorCode_SUCCESS)
	// ------------------------------DropCollectionTask---------------------------

	log.Printf("... [Drop] collection col1\n")
	ser := servicepb.CollectionName{CollectionName: "col1"}

	reqDrop := internalpb.DropCollectionRequest{
		MsgType:        internalpb.MsgType_kDropCollection,
		ReqID:          1,
		Timestamp:      11,
		ProxyID:        1,
		CollectionName: &ser,
	}

	st, err = cli.DropCollection(ctx, &reqDrop)
	assert.Nil(t, err)
	assert.Equal(t, st.ErrorCode, commonpb.ErrorCode_SUCCESS)

	collMeta, err = svr.mt.GetCollectionByName(sch.Name)
	assert.NotNil(t, err)

	// Drop again
	st, err = cli.DropCollection(ctx, &reqDrop)
	assert.Nil(t, err)
	assert.NotEqual(t, st.ErrorCode, commonpb.ErrorCode_SUCCESS)

	// Create
	req.Timestamp = Timestamp(11)
	st, err = cli.CreateCollection(ctx, &req)
	assert.Nil(t, err)
	log.Printf(st.Reason)
	assert.Equal(t, st.ErrorCode, commonpb.ErrorCode_SUCCESS)

	svr.Close()
}