package proxynode

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
	"github.com/zilliztech/milvus-distributed/internal/proto/milvuspb"
	"github.com/zilliztech/milvus-distributed/internal/proto/schemapb"
	"github.com/zilliztech/milvus-distributed/internal/util/typeutil"
)

type MockMasterClientInterface struct {
}

func (m *MockMasterClientInterface) ShowPartitions(in *milvuspb.ShowPartitionRequest) (*milvuspb.ShowPartitionResponse, error) {
	if in.CollectionName == "collection1" {
		return &milvuspb.ShowPartitionResponse{
			Status: &commonpb.Status{
				ErrorCode: commonpb.ErrorCode_SUCCESS,
			},
			PartitionIDs:   []typeutil.UniqueID{1, 2},
			PartitionNames: []string{"par1", "par2"},
		}, nil
	}
	return &milvuspb.ShowPartitionResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_SUCCESS,
		},
		PartitionIDs:   []typeutil.UniqueID{},
		PartitionNames: []string{},
	}, nil
}

func (m *MockMasterClientInterface) DescribeCollection(in *milvuspb.DescribeCollectionRequest) (*milvuspb.DescribeCollectionResponse, error) {
	if in.CollectionName == "collection1" {
		return &milvuspb.DescribeCollectionResponse{
			Status: &commonpb.Status{
				ErrorCode: commonpb.ErrorCode_SUCCESS,
			},
			CollectionID: typeutil.UniqueID(1),
			Schema: &schemapb.CollectionSchema{
				AutoID: true,
			},
		}, nil
	}
	return &milvuspb.DescribeCollectionResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_UNEXPECTED_ERROR,
		},
		CollectionID: typeutil.UniqueID(0),
		Schema:       nil,
	}, nil
}

func TestMetaCache_GetCollection(t *testing.T) {
	client := &MockMasterClientInterface{}
	err := InitMetaCache(client)
	assert.Nil(t, err)

	id, err := globalMetaCache.GetCollectionID("collection1")
	assert.Nil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(1))
	schema, err := globalMetaCache.GetCollectionSchema("collection1")
	assert.Nil(t, err)
	assert.Equal(t, schema, &schemapb.CollectionSchema{
		AutoID: true,
	})
	id, err = globalMetaCache.GetCollectionID("collection2")
	assert.NotNil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(0))
	schema, err = globalMetaCache.GetCollectionSchema("collection2")
	assert.NotNil(t, err)
	assert.Nil(t, schema)
}

func TestMetaCache_GetPartitionID(t *testing.T) {
	client := &MockMasterClientInterface{}
	err := InitMetaCache(client)
	assert.Nil(t, err)

	id, err := globalMetaCache.GetPartitionID("collection1", "par1")
	assert.Nil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(1))
	id, err = globalMetaCache.GetPartitionID("collection1", "par2")
	assert.Nil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(2))
	id, err = globalMetaCache.GetPartitionID("collection1", "par3")
	assert.NotNil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(0))
	id, err = globalMetaCache.GetPartitionID("collection2", "par3")
	assert.NotNil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(0))
	id, err = globalMetaCache.GetPartitionID("collection2", "par4")
	assert.NotNil(t, err)
	assert.Equal(t, id, typeutil.UniqueID(0))
}