// Licensed to the LF AI & Data foundation 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 integration

import (
	"fmt"
	"strconv"

	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
	"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
	"github.com/milvus-io/milvus/pkg/v2/common"
)

const (
	BoolField              = "boolField"
	Int8Field              = "int8Field"
	Int16Field             = "int16Field"
	Int32Field             = "int32Field"
	Int64Field             = "int64Field"
	FloatField             = "floatField"
	DoubleField            = "doubleField"
	VarCharField           = "varCharField"
	JSONField              = "jsonField"
	GeometryField          = "geometryField"
	FloatVecField          = "floatVecField"
	BinVecField            = "binVecField"
	Float16VecField        = "float16VecField"
	BFloat16VecField       = "bfloat16VecField"
	SparseFloatVecField    = "sparseFloatVecField"
	StructArrayField       = "structArrayField"
	StructSubInt32Field    = "structSubInt32Field"
	StructSubFloatVecField = "structSubFloatVecField"
)

func ConstructSchema(collection string, dim int, autoID bool, fields ...*schemapb.FieldSchema) *schemapb.CollectionSchema {
	// if fields are specified, construct it
	if len(fields) > 0 {
		return &schemapb.CollectionSchema{
			Name:   collection,
			AutoID: autoID,
			Fields: fields,
		}
	}

	// if no field is specified, use default
	pk := &schemapb.FieldSchema{
		FieldID:      100,
		Name:         Int64Field,
		IsPrimaryKey: true,
		Description:  "",
		DataType:     schemapb.DataType_Int64,
		TypeParams:   nil,
		IndexParams:  nil,
		AutoID:       autoID,
	}
	fVec := &schemapb.FieldSchema{
		FieldID:      101,
		Name:         FloatVecField,
		IsPrimaryKey: false,
		Description:  "",
		DataType:     schemapb.DataType_FloatVector,
		TypeParams: []*commonpb.KeyValuePair{
			{
				Key:   common.DimKey,
				Value: fmt.Sprintf("%d", dim),
			},
		},
		IndexParams: nil,
	}
	return &schemapb.CollectionSchema{
		Name:   collection,
		AutoID: autoID,
		Fields: []*schemapb.FieldSchema{pk, fVec},
	}
}

func ConstructSchemaOfVecDataType(collection string, dim int, autoID bool, dataType ...schemapb.DataType) *schemapb.CollectionSchema {
	pk := &schemapb.FieldSchema{
		FieldID:      100,
		Name:         Int64Field,
		IsPrimaryKey: true,
		Description:  "",
		DataType:     schemapb.DataType_Int64,
		TypeParams:   nil,
		IndexParams:  nil,
		AutoID:       autoID,
	}
	var name string
	var typeParams []*commonpb.KeyValuePair
	var fieldSchemaArray []*schemapb.FieldSchema
	fieldSchemaArray = append(fieldSchemaArray, pk)
	for i := 0; i < len(dataType); i++ {
		switch dataType[i] {
		case schemapb.DataType_FloatVector:
			name = FloatVecField
			typeParams = []*commonpb.KeyValuePair{
				{
					Key:   common.DimKey,
					Value: fmt.Sprintf("%d", dim),
				},
			}
		case schemapb.DataType_SparseFloatVector:
			name = SparseFloatVecField
			typeParams = nil
		case schemapb.DataType_Geometry:
			name = GeometryField
			typeParams = nil
		default:
			panic("unsupported data type")
		}
		sche := &schemapb.FieldSchema{
			FieldID:      101 + int64(i),
			Name:         name,
			IsPrimaryKey: false,
			Description:  "",
			DataType:     dataType[i],
			TypeParams:   typeParams,
			IndexParams:  nil,
		}
		fieldSchemaArray = append(fieldSchemaArray, sche)
	}
	return &schemapb.CollectionSchema{
		Name:   collection,
		AutoID: autoID,
		Fields: fieldSchemaArray,
	}
}

func ConstructSchemaOfVecDataTypeWithStruct(collection string, dim int, autoID bool) *schemapb.CollectionSchema {
	pk := &schemapb.FieldSchema{
		FieldID:      100,
		Name:         Int64Field,
		IsPrimaryKey: true,
		Description:  "",
		DataType:     schemapb.DataType_Int64,
		TypeParams:   nil,
		IndexParams:  nil,
		AutoID:       autoID,
	}
	fVec := &schemapb.FieldSchema{
		FieldID:      101,
		Name:         FloatVecField,
		IsPrimaryKey: false,
		Description:  "",
		DataType:     schemapb.DataType_FloatVector,
		TypeParams: []*commonpb.KeyValuePair{
			{
				Key:   common.DimKey,
				Value: fmt.Sprintf("%d", dim),
			},
		},
		IndexParams: nil,
	}
	structArrayField := &schemapb.StructArrayFieldSchema{
		FieldID:     102,
		Name:        StructArrayField,
		Description: "",
		Fields: []*schemapb.FieldSchema{
			{
				FieldID:     103,
				Name:        StructSubInt32Field,
				DataType:    schemapb.DataType_Array,
				ElementType: schemapb.DataType_Int32,
				TypeParams: []*commonpb.KeyValuePair{
					{
						Key:   common.MaxCapacityKey,
						Value: "100",
					},
				},
			},
			{
				FieldID:     104,
				Name:        StructSubFloatVecField,
				DataType:    schemapb.DataType_ArrayOfVector,
				ElementType: schemapb.DataType_FloatVector,
				TypeParams: []*commonpb.KeyValuePair{
					{
						Key:   common.DimKey,
						Value: strconv.Itoa(dim),
					},
					{
						Key:   common.MaxCapacityKey,
						Value: "100",
					},
				},
			},
		},
	}

	return &schemapb.CollectionSchema{
		Name:              collection,
		AutoID:            autoID,
		Fields:            []*schemapb.FieldSchema{pk, fVec},
		StructArrayFields: []*schemapb.StructArrayFieldSchema{structArrayField},
	}
}