package v4

import (
	"testing"

	"github.com/stretchr/testify/assert"
	v3 "go.signoz.io/signoz/pkg/query-service/model/v3"
)

func TestPrepareTimeseriesFilterQuery(t *testing.T) {
	testCases := []struct {
		name                  string
		builderQuery          *v3.BuilderQuery
		expectedQueryContains string
	}{
		{
			name: "test prepare time series with no filters and no group by",
			builderQuery: &v3.BuilderQuery{
				QueryName:    "A",
				StepInterval: 60,
				DataSource:   v3.DataSourceMetrics,
				AggregateAttribute: v3.AttributeKey{
					Key:      "http_requests",
					DataType: v3.AttributeKeyDataTypeFloat64,
					Type:     v3.AttributeKeyTypeUnspecified,
					IsColumn: true,
					IsJSON:   false,
				},
				Temporality: v3.Delta,
				Expression:  "A",
				Disabled:    false,
				// remaining struct fields are not needed here
			},
			expectedQueryContains: "SELECT DISTINCT fingerprint FROM signoz_metrics.time_series_v2 WHERE metric_name = 'http_requests' AND temporality = 'Delta'",
		},
		{
			name: "test prepare time series with no filters and group by",
			builderQuery: &v3.BuilderQuery{
				QueryName:    "A",
				StepInterval: 60,
				DataSource:   v3.DataSourceMetrics,
				AggregateAttribute: v3.AttributeKey{
					Key:      "http_requests",
					DataType: v3.AttributeKeyDataTypeFloat64,
					Type:     v3.AttributeKeyTypeUnspecified,
					IsColumn: true,
					IsJSON:   false,
				},
				Temporality: v3.Cumulative,
				GroupBy: []v3.AttributeKey{{
					Key:      "service_name",
					DataType: v3.AttributeKeyDataTypeString,
					Type:     v3.AttributeKeyTypeTag,
				}},
				Expression: "A",
				Disabled:   false,
				// remaining struct fields are not needed here
			},
			expectedQueryContains: "SELECT DISTINCT JSONExtractString(labels, 'service_name') as service_name, fingerprint FROM signoz_metrics.time_series_v2 WHERE metric_name = 'http_requests' AND temporality = 'Cumulative'",
		},
		{
			name: "test prepare time series with no filters and multiple group by",
			builderQuery: &v3.BuilderQuery{
				QueryName:    "A",
				StepInterval: 60,
				DataSource:   v3.DataSourceMetrics,
				AggregateAttribute: v3.AttributeKey{
					Key:      "http_requests",
					DataType: v3.AttributeKeyDataTypeFloat64,
					Type:     v3.AttributeKeyTypeUnspecified,
					IsColumn: true,
					IsJSON:   false,
				},
				Temporality: v3.Cumulative,
				GroupBy: []v3.AttributeKey{
					{
						Key:      "service_name",
						DataType: v3.AttributeKeyDataTypeString,
						Type:     v3.AttributeKeyTypeTag,
					},
					{
						Key:      "endpoint",
						DataType: v3.AttributeKeyDataTypeString,
						Type:     v3.AttributeKeyTypeTag,
					},
				},
				Expression: "A",
				Disabled:   false,
				// remaining struct fields are not needed here
			},
			expectedQueryContains: "SELECT DISTINCT JSONExtractString(labels, 'service_name') as service_name, JSONExtractString(labels, 'endpoint') as endpoint, fingerprint FROM signoz_metrics.time_series_v2 WHERE metric_name = 'http_requests' AND temporality = 'Cumulative'",
		},
		{
			name: "test prepare time series with filters and multiple group by",
			builderQuery: &v3.BuilderQuery{
				QueryName:    "A",
				StepInterval: 60,
				DataSource:   v3.DataSourceMetrics,
				AggregateAttribute: v3.AttributeKey{
					Key:      "http_requests",
					DataType: v3.AttributeKeyDataTypeFloat64,
					Type:     v3.AttributeKeyTypeUnspecified,
					IsColumn: true,
					IsJSON:   false,
				},
				Temporality: v3.Cumulative,
				Filters: &v3.FilterSet{
					Operator: "AND",
					Items: []v3.FilterItem{
						{
							Key: v3.AttributeKey{
								Key:      "service_name",
								Type:     v3.AttributeKeyTypeTag,
								DataType: v3.AttributeKeyDataTypeString,
							},
							Operator: v3.FilterOperatorNotEqual,
							Value:    "payment_service",
						},
						{
							Key: v3.AttributeKey{
								Key:      "endpoint",
								Type:     v3.AttributeKeyTypeTag,
								DataType: v3.AttributeKeyDataTypeString,
							},
							Operator: v3.FilterOperatorIn,
							Value:    []interface{}{"/paycallback", "/payme", "/paypal"},
						},
					},
				},
				GroupBy: []v3.AttributeKey{{
					Key:      "service_name",
					DataType: v3.AttributeKeyDataTypeString,
					Type:     v3.AttributeKeyTypeTag,
				}},
				Expression: "A",
				Disabled:   false,
				// remaining struct fields are not needed here
			},
			expectedQueryContains: "SELECT DISTINCT JSONExtractString(labels, 'service_name') as service_name, fingerprint FROM signoz_metrics.time_series_v2 WHERE metric_name = 'http_requests' AND temporality = 'Cumulative' AND JSONExtractString(labels, 'service_name') != 'payment_service' AND JSONExtractString(labels, 'endpoint') IN ['/paycallback','/payme','/paypal']",
		},
	}

	for _, testCase := range testCases {
		t.Run(testCase.name, func(t *testing.T) {
			query, err := PrepareTimeseriesFilterQuery(testCase.builderQuery)
			assert.Nil(t, err)
			assert.Contains(t, query, testCase.expectedQueryContains)
		})
	}
}