// 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 paramtable

import (
	"encoding/json"
	"strconv"
	"testing"

	"github.com/milvus-io/milvus/pkg/util/indexparamcheck"

	"github.com/milvus-io/milvus/pkg/config"

	"github.com/stretchr/testify/assert"

	"github.com/milvus-io/milvus/pkg/common"
)

const (
	MetricTypeKey = common.MetricTypeKey
	IndexTypeKey  = common.IndexTypeKey
)

func TestAutoIndexParams_build(t *testing.T) {
	var CParams ComponentParam
	CParams.Init()

	t.Run("test parseBuildParams success", func(t *testing.T) {
		//Params := CParams.AutoIndexConfig
		//buildParams := make([string]interface)
		var err error
		map1 := map[string]any{
			IndexTypeKey:     "HNSW",
			"M":              48,
			"efConstruction": 500,
		}
		var jsonStrBytes []byte
		jsonStrBytes, err = json.Marshal(map1)
		assert.NoError(t, err)
		CParams.Save(CParams.AutoIndexConfig.IndexParams.Key, string(jsonStrBytes))
		assert.Equal(t, "HNSW", CParams.AutoIndexConfig.IndexType.GetValue())
		assert.Equal(t, strconv.Itoa(map1["M"].(int)), CParams.AutoIndexConfig.IndexParams.GetAsJSONMap()["M"])
		assert.Equal(t, strconv.Itoa(map1["efConstruction"].(int)), CParams.AutoIndexConfig.IndexParams.GetAsJSONMap()["efConstruction"])

		map2 := map[string]interface{}{
			IndexTypeKey: "IVF_FLAT",
			"nlist":      1024,
		}
		jsonStrBytes, err = json.Marshal(map2)
		assert.NoError(t, err)
		CParams.Save(CParams.AutoIndexConfig.IndexParams.Key, string(jsonStrBytes))
		assert.Equal(t, "IVF_FLAT", CParams.AutoIndexConfig.IndexType.GetValue())
		assert.Equal(t, strconv.Itoa(map2["nlist"].(int)), CParams.AutoIndexConfig.IndexParams.GetAsJSONMap()["nlist"])
	})

	// t.Run("test parseBuildParams miss total", func(t *testing.T) {
	// 	defer func() {
	// 		if r := recover(); r == nil {
	// 			t.Errorf("The code did not panic")
	// 		}
	// 	}()
	// 	CParams.Save(CParams.AutoIndexConfig.IndexParams.Key, "")
	//
	// })
	//
	// t.Run("test parseBuildParams miss index_type", func(t *testing.T) {
	// 	defer func() {
	// 		if r := recover(); r == nil {
	// 			t.Errorf("The code did not panic")
	// 		}
	// 	}()
	// 	var err error
	// 	map1 := map[string]any{
	// 		"M":              48,
	// 		"efConstruction": 500,
	// 	}
	// 	var jsonStrBytes []byte
	// 	jsonStrBytes, err = json.Marshal(map1)
	// 	assert.NoError(t, err)
	// 	CParams.Save(CParams.AutoIndexConfig.IndexParams.Key, string(jsonStrBytes))
	// })
}

func Test_autoIndexConfig_panicIfNotValid(t *testing.T) {
	t.Run("not in json format", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", "not in json format")
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.Panics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
	})

	t.Run("index type not found", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"M": 30}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.Panics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
	})

	t.Run("unsupported index type", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"index_type": "not supported"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.Panics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
	})

	t.Run("normal case, hnsw", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"M": 30,"efConstruction": 360,"index_type": "HNSW"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.NotPanics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
		metricType, exist := p.IndexParams.GetAsJSONMap()[common.MetricTypeKey]
		assert.True(t, exist)
		assert.Equal(t, indexparamcheck.FloatVectorDefaultMetricType, metricType)
	})

	t.Run("normal case, ivf flat", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"nlist": 30, "index_type": "IVF_FLAT"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.NotPanics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
		metricType, exist := p.IndexParams.GetAsJSONMap()[common.MetricTypeKey]
		assert.True(t, exist)
		assert.Equal(t, indexparamcheck.FloatVectorDefaultMetricType, metricType)
	})

	t.Run("normal case, ivf flat", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"nlist": 30, "index_type": "IVF_FLAT"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.NotPanics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
		metricType, exist := p.IndexParams.GetAsJSONMap()[common.MetricTypeKey]
		assert.True(t, exist)
		assert.Equal(t, indexparamcheck.FloatVectorDefaultMetricType, metricType)
	})

	t.Run("normal case, diskann", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"index_type": "DISKANN"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.NotPanics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
		metricType, exist := p.IndexParams.GetAsJSONMap()[common.MetricTypeKey]
		assert.True(t, exist)
		assert.Equal(t, indexparamcheck.FloatVectorDefaultMetricType, metricType)
	})

	t.Run("normal case, bin flat", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"index_type": "BIN_FLAT"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.NotPanics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
		metricType, exist := p.IndexParams.GetAsJSONMap()[common.MetricTypeKey]
		assert.True(t, exist)
		assert.Equal(t, indexparamcheck.BinaryVectorDefaultMetricType, metricType)
	})

	t.Run("normal case, bin ivf flat", func(t *testing.T) {
		mgr := config.NewManager()
		mgr.SetConfig("autoIndex.params.build", `{"nlist": 30, "index_type": "BIN_IVF_FLAT"}`)
		p := &autoIndexConfig{
			IndexParams: ParamItem{
				Key: "autoIndex.params.build",
			},
		}
		p.IndexParams.Init(mgr)
		assert.NotPanics(t, func() {
			p.panicIfNotValidAndSetDefaultMetricType(mgr)
		})
		metricType, exist := p.IndexParams.GetAsJSONMap()[common.MetricTypeKey]
		assert.True(t, exist)
		assert.Equal(t, indexparamcheck.BinaryVectorDefaultMetricType, metricType)
	})
}
