// 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 importutil

import (
	"context"
	"strings"
	"testing"

	"github.com/milvus-io/milvus-proto/go-api/commonpb"
	"github.com/milvus-io/milvus-proto/go-api/schemapb"
	"github.com/milvus-io/milvus/internal/util/typeutil"
	"github.com/stretchr/testify/assert"
)

func Test_AdjustBufSize(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// small row
	schema := sampleSchema()
	parser := NewJSONParser(ctx, schema)
	assert.NotNil(t, parser)

	sizePerRecord, err := typeutil.EstimateSizePerRecord(schema)
	assert.Nil(t, err)
	assert.Greater(t, sizePerRecord, 0)
	assert.Equal(t, MaxBatchCount, MaxFileSize/(sizePerRecord*int(parser.bufSize)))

	// huge row
	schema.Fields[9].TypeParams = []*commonpb.KeyValuePair{
		{Key: "dim", Value: "32768"},
	}
	parser = NewJSONParser(ctx, schema)
	assert.NotNil(t, parser)
	sizePerRecord, _ = typeutil.EstimateSizePerRecord(schema)

	assert.Equal(t, 7, MaxFileSize/(sizePerRecord*int(parser.bufSize)))

	// no change
	schema = &schemapb.CollectionSchema{
		Name:        "schema",
		Description: "schema",
		AutoID:      true,
		Fields:      []*schemapb.FieldSchema{},
	}
	parser = NewJSONParser(ctx, schema)
	assert.NotNil(t, parser)

	assert.Equal(t, int64(MinBufferSize), parser.bufSize)
}

func Test_JSONParserParserRows(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	schema := sampleSchema()
	parser := NewJSONParser(ctx, schema)
	assert.NotNil(t, parser)
	parser.bufSize = 1

	reader := strings.NewReader(`{
		"rows":[
			{"field_bool": true, "field_int8": 10, "field_int16": 101, "field_int32": 1001, "field_int64": 10001, "field_float": 3.14, "field_double": 1.56, "field_string": "hello world", "field_binary_vector": [254, 0], "field_float_vector": [1.1, 1.2, 1.3, 1.4]},
			{"field_bool": false, "field_int8": 11, "field_int16": 102, "field_int32": 1002, "field_int64": 10002, "field_float": 3.15, "field_double": 2.56, "field_string": "hello world", "field_binary_vector": [253, 0], "field_float_vector": [2.1, 2.2, 2.3, 2.4]},
			{"field_bool": true, "field_int8": 12, "field_int16": 103, "field_int32": 1003, "field_int64": 10003, "field_float": 3.16, "field_double": 3.56, "field_string": "hello world", "field_binary_vector": [252, 0], "field_float_vector": [3.1, 3.2, 3.3, 3.4]},
			{"field_bool": false, "field_int8": 13, "field_int16": 104, "field_int32": 1004, "field_int64": 10004, "field_float": 3.17, "field_double": 4.56, "field_string": "hello world", "field_binary_vector": [251, 0], "field_float_vector": [4.1, 4.2, 4.3, 4.4]},
			{"field_bool": true, "field_int8": 14, "field_int16": 105, "field_int32": 1005, "field_int64": 10005, "field_float": 3.18, "field_double": 5.56, "field_string": "hello world", "field_binary_vector": [250, 0], "field_float_vector": [5.1, 5.2, 5.3, 5.4]}
		]
	}`)

	// handler is nil
	err := parser.ParseRows(reader, nil)
	assert.NotNil(t, err)

	validator, err := NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	// success
	err = parser.ParseRows(reader, validator)
	assert.Nil(t, err)
	assert.Equal(t, int64(5), validator.ValidateCount())

	// not a row-based format
	reader = strings.NewReader(`{
		"dummy":[]
	}`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// rows is not a list
	reader = strings.NewReader(`{
		"rows":
	}`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// typo
	reader = strings.NewReader(`{
		"rows": [}
	}`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// rows is not a list
	reader = strings.NewReader(`{
		"rows": {}
	}`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// rows is not a list of list
	reader = strings.NewReader(`{
		"rows": [[]]
	}`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// not valid json format
	reader = strings.NewReader(`[]`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// empty content
	reader = strings.NewReader(`{}`)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// empty content
	reader = strings.NewReader(``)
	validator, err = NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// redundant field
	reader = strings.NewReader(`{
		"rows":[
			{"dummy": 1, "field_bool": true, "field_int8": 10, "field_int16": 101, "field_int32": 1001, "field_int64": 10001, "field_float": 3.14, "field_double": 1.56, "field_string": "hello world", "field_binary_vector": [254, 0], "field_float_vector": [1.1, 1.2, 1.3, 1.4]},
		]
	}`)
	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)

	// field missed
	reader = strings.NewReader(`{
		"rows":[
			{"field_int8": 10, "field_int16": 101, "field_int32": 1001, "field_int64": 10001, "field_float": 3.14, "field_double": 1.56, "field_string": "hello world", "field_binary_vector": [254, 0], "field_float_vector": [1.1, 1.2, 1.3, 1.4]},
		]
	}`)
	err = parser.ParseRows(reader, validator)
	assert.NotNil(t, err)
}

func Test_JSONParserParserRowsStringKey(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	schema := strKeySchema()
	parser := NewJSONParser(ctx, schema)
	assert.NotNil(t, parser)
	parser.bufSize = 1

	reader := strings.NewReader(`{
		"rows": [{
				"uid": "Dm4aWrbNzhmjwCTEnCJ9LDPO2N09sqysxgVfbH9Zmn3nBzmwsmk0eZN6x7wSAoPQ",
				"int_scalar": 9070353,
				"float_scalar": 0.9798043638085004,
				"string_scalar": "ShQ44OX0z8kGpRPhaXmfSsdH7JHq5DsZzu0e2umS1hrWG0uONH2RIIAdOECaaXir",
				"bool_scalar": true,
				"vectors": [0.5040062902126952, 0.8297619818664708, 0.20248342801564806, 0.12834786423659314]
			},
			{
				"uid": "RP50U0d2napRjXu94a8oGikWgklvVsXFurp8RR4tHGw7N0gk1b7opm59k3FCpyPb",
				"int_scalar": 8505288,
				"float_scalar": 0.937913432198687,
				"string_scalar": "Ld4b0avxathBdNvCrtm3QsWO1pYktUVR7WgAtrtozIwrA8vpeactNhJ85CFGQnK5",
				"bool_scalar": false,
				"vectors": [0.528232122836893, 0.6916116750653186, 0.41443762522548705, 0.26624344144792056]
			},
			{
				"uid": "oxhFkQitWPPw0Bjmj7UQcn4iwvS0CU7RLAC81uQFFQjWtOdiB329CPyWkfGSeYfE",
				"int_scalar": 4392660,
				"float_scalar": 0.32381232630490264,
				"string_scalar": "EmAlB0xdQcxeBtwlZJQnLgKodiuRinynoQtg0eXrjkq24dQohzSm7Bx3zquHd3kO",
				"bool_scalar": false,
				"vectors": [0.7978693027281338, 0.12394906726785092, 0.42431962903815285, 0.4098707807351914]
			},
			{
				"uid": "sxoEL4Mpk1LdsyXhbNm059UWJ3CvxURLCQczaVI5xtBD4QcVWTDFUW7dBdye6nbn",
				"int_scalar": 7927425,
				"float_scalar": 0.31074026464844895,
				"string_scalar": "fdY2beCvs1wSws0Gb9ySD92xwfEfJpX5DQgsWoISylBAoYOcXpRaqIJoXYS4g269",
				"bool_scalar": true,
				"vectors": [0.3716157812069954, 0.006981281113265229, 0.9007003458552365, 0.22492634316191004]
			},
			{
				"uid": "g33Rqq2UQSHPRHw5FvuXxf5uGEhIAetxE6UuXXCJj0hafG8WuJr1ueZftsySCqAd",
				"int_scalar": 9288807,
				"float_scalar": 0.4953578200336135,
				"string_scalar": "6f8Iv1zQAGksj5XxMbbI5evTrYrB8fSFQ58jl0oU7Z4BpA81VsD2tlWqkhfoBNa7",
				"bool_scalar": false,
				"vectors": [0.5921374209648096, 0.04234832587925662, 0.7803878096531548, 0.1964045837884633]
			},
			{
				"uid": "ACIJd7lTXkRgUNmlQk6AbnWIKEEV8Z6OS3vDcm0w9psmt9sH3z1JLg1fNVCqiX3d",
				"int_scalar": 1173595,
				"float_scalar": 0.9000745450802002,
				"string_scalar": "gpj9YctF2ig1l1APkvRzHbVE8PZVKRbk7nvW73qS2uQbY5l7MeIeTPwRBjasbY8z",
				"bool_scalar": true,
				"vectors": [0.4655121736168688, 0.6195496905333787, 0.5316616196326639, 0.3417492053890768]
			},
			{
				"uid": "f0wRVZZ9u1bEKrAjLeZj3oliEnUjBiUl6TiermeczceBmGe6M2RHONgz3qEogrd5",
				"int_scalar": 3722368,
				"float_scalar": 0.7212299175768438,
				"string_scalar": "xydiejGUlvS49BfBuy1EuYRKt3v2oKwC6pqy7Ga4dGWn3BnQigV4XAGawixDAGHN",
				"bool_scalar": false,
				"vectors": [0.6173164237304075, 0.374107748459483, 0.3686321416317251, 0.585725336391797]
			},
			{
				"uid": "uXq9q96vUqnDebcUISFkRFT27OjD89DWhok6urXIjTuLzaSWnCVTJkrJXxFctSg0",
				"int_scalar": 1940731,
				"float_scalar": 0.9524404085944204,
				"string_scalar": "ZXSNzR5V3t62fjop7b7DHK56ByAF0INYwycKsu6OxGP4p2j0Obs6l0NUqukypGXd",
				"bool_scalar": false,
				"vectors": [0.07178869784465443, 0.4208459174227864, 0.5882811425075762, 0.6867753592116734]
			},
			{
				"uid": "EXDDklLvQIfeCJN8cES3b9mdCYDQVhq2iLj8WWA3TPtZ1SZ4Jpidj7OXJidSD7Wn",
				"int_scalar": 2158426,
				"float_scalar": 0.23770219927963454,
				"string_scalar": "9TNeKVSMqTP8Zxs90kaAcB7n6JbIcvFWInzi9JxZQgmYxD5xLYwaCoeUzRiNAxAg",
				"bool_scalar": false,
				"vectors": [0.5659468293534021, 0.6275816433340369, 0.3978846871291008, 0.3571179679645908]
			},
			{
				"uid": "mlaXOgYvB88WWRpXNyWv6UqpmvIHrC6pRo03AtaPLMpVymu0L9ioO8GWa1XgGyj0",
				"int_scalar": 198279,
				"float_scalar": 0.020343767010139513,
				"string_scalar": "AblYGRZJiMAwDbMEkungG0yKTeuya4FgyliakWWqSOJ5TvQWB9Ki2WXbnvSsYIDF",
				"bool_scalar": true,
				"vectors": [0.5374636140212398, 0.7655373567912009, 0.05491796821609715, 0.349384366747262]
			}
		]
	}`)

	validator, err := NewJSONRowValidator(schema, nil)
	assert.NotNil(t, validator)
	assert.Nil(t, err)

	err = parser.ParseRows(reader, validator)
	assert.Nil(t, err)
	assert.Equal(t, int64(10), validator.ValidateCount())
}