package service

import (
	"context"
	"errors"
	"strconv"
	"testing"
	"time"

	"github.com/grafana/grafana-plugin-sdk-go/backend"
	"github.com/grafana/grafana-plugin-sdk-go/backend/gtime"
	"github.com/grafana/grafana-plugin-sdk-go/data"

	"github.com/grafana/grafana/pkg/apimachinery/identity"
	"github.com/grafana/grafana/pkg/components/simplejson"
	dashboard2 "github.com/grafana/grafana/pkg/kinds/dashboard"
	"github.com/grafana/grafana/pkg/services/annotations"
	"github.com/grafana/grafana/pkg/services/dashboards"
	dashboardsDB "github.com/grafana/grafana/pkg/services/dashboards/database"
	"github.com/grafana/grafana/pkg/services/featuremgmt"
	. "github.com/grafana/grafana/pkg/services/publicdashboards"
	"github.com/grafana/grafana/pkg/services/publicdashboards/internal"
	. "github.com/grafana/grafana/pkg/services/publicdashboards/models"
	"github.com/grafana/grafana/pkg/services/query"
	"github.com/grafana/grafana/pkg/services/tag/tagimpl"
	"github.com/grafana/grafana/pkg/util"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
	"github.com/stretchr/testify/require"
)

const (
	dashboardWithNoQueries = `
{
  "panels": [
    {
      "id": 2,
      "title": "Panel Title",
      "type": "timeseries"
    }
  ],
  "schemaVersion": 35
}`

	dashboardWithTargetsWithNoDatasources = `
{
  "panels": [
    {
      "id": 2,
      "datasource": {
          "type": "postgres",
          "uid": "abc123"
      },
      "targets": [
        {
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        },
        {
          "exemplar": true,
          "expr": "query2",
          "interval": "",
          "legendFormat": "",
          "refId": "B"
        }
      ],
      "title": "Panel Title",
      "type": "timeseries"
    }
  ],
  "schemaVersion": 35
}`

	dashboardWithQueriesExemplarEnabled = `
{
  "panels": [
    {
      "id": 2,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "_yxMP8Ynk"
          },
          "exemplar": true,
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "promds2"
          },
          "exemplar": true,
          "expr": "query2",
          "interval": "",
          "legendFormat": "",
          "refId": "B"
        }
      ],
      "title": "Panel Title",
      "type": "timeseries"
    }
  ],
  "schemaVersion": 35
}`

	oldStyleDashboard = `
{
  "panels": [
    {
	  "datasource": "_yxMP8Ynk",
      "id": 2,
      "targets": [
        {
          "exemplar": true,
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        }
      ],
      "title": "Panel Title",
      "type": "timeseries"
    }
  ],
  "schemaVersion": 21
}`

	dashboardWithOneHiddenQuery = `
{
  "panels": [
    {
      "id": 2,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "_yxMP8Ynk"
          },
          "exemplar": true,
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A",
          "hide": true
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "promds2"
          },
          "exemplar": true,
          "expr": "query2",
          "interval": "",
          "legendFormat": "",
          "refId": "B"
        },
        {
          "datasource": {
            "name": "Expression",
            "type": "__expr__",
            "uid": "__expr__"
          },
          "expression": "$A + $B",
          "refId": "C",
          "type": "math"
        }
      ],
      "title": "Panel Title",
      "type": "timeseries"
    }
  ],
  "schemaVersion": 35
}`
	dashboardWithAllHiddenQueries = `
{
  "panels": [
    {
      "id": 2,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "_yxMP8Ynk"
          },
          "exemplar": true,
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A",
          "hide": true
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "promds2"
          },
          "exemplar": true,
          "expr": "query2",
          "interval": "",
          "legendFormat": "",
          "refId": "B",
		  "hide": true
        },
        {
          "datasource": {
            "name": "Expression",
            "type": "__expr__",
            "uid": "__expr__"
          },
          "expression": "$A + $B",
          "refId": "C",
          "type": "math"
        }
      ],
      "title": "Panel Title",
      "type": "timeseries"
    }
  ],
  "schemaVersion": 35
}`

	dashboardWithRowsAndOneHiddenQuery = `
{
  "panels": [
    {
      "id": 2,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "_yxMP8Ynk"
          },
          "exemplar": true,
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "promds2"
          },
          "exemplar": true,
          "expr": "query2",
          "interval": "",
          "legendFormat": "",
		  "hide": true,
          "refId": "B"
        }
      ],
      "title": "Panel Title",
      "type": "timeseries"
    },
    {
      "id": 3,
      "collapsed": true,
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 9
      },
      "title": "This panel is a Row",
      "type": "row",
"panels": [
    {
      "id": 4,
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "_yxMP8Ynk"
          },
          "exemplar": true,
          "expr": "go_goroutines{job=\"$job\"}",
          "interval": "",
          "legendFormat": "",
          "refId": "A"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "promds2"
          },
          "exemplar": true,
          "expr": "query2",
          "interval": "",
          "legendFormat": "",
          "refId": "B"
        }
      ],
      "title": "Panel inside a row",
      "type": "timeseries"
    }
  ]
    }
  ],
  "schemaVersion": 35
}`
)

func TestGetQueryDataResponse(t *testing.T) {
	fakeDashboardService := &dashboards.FakeDashboardService{}
	service, sqlStore, _ := newPublicDashboardServiceImpl(t, nil, nil, nil, fakeDashboardService, nil)
	fakeQueryService := &query.FakeQueryService{}
	fakeQueryService.On("QueryData", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(&backend.QueryDataResponse{}, nil)
	service.QueryDataService = fakeQueryService

	dashboardStore, err := dashboardsDB.ProvideDashboardStore(sqlStore, service.cfg, featuremgmt.WithFeatures(), tagimpl.ProvideService(sqlStore))
	require.NoError(t, err)

	publicDashboardQueryDTO := PublicDashboardQueryDTO{
		IntervalMs:    int64(1),
		MaxDataPoints: int64(1),
	}

	t.Run("Returns query data even when the query is hidden", func(t *testing.T) {
		hiddenQuery := map[string]interface{}{
			"datasource": map[string]interface{}{
				"name": "Expression",
				"type": "__expr__",
				"uid":  "__expr__",
			},
			"hide":  true,
			"refId": "A",
		}
		customPanels := []interface{}{
			map[string]interface{}{
				"id": 1,
				"datasource": map[string]interface{}{
					"uid": "ds1",
				},
				"targets": []interface{}{hiddenQuery},
			}}

		dashboard := insertTestDashboard(t, dashboardStore, "testDashWithHiddenQuery", 1, 0, "", true, []map[string]interface{}{}, customPanels)
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)

		isEnabled := true
		dto := &SavePublicDashboardDTO{
			DashboardUid: dashboard.UID,
			UserId:       7,
			OrgID:        dashboard.OrgID,
			PublicDashboard: &PublicDashboardDTO{
				IsEnabled: &isEnabled,
			},
		}
		pubdashDto, err := service.Create(context.Background(), SignedInUser, dto)
		require.NoError(t, err)

		resp, _ := service.GetQueryDataResponse(context.Background(), true, publicDashboardQueryDTO, 1, pubdashDto.AccessToken)
		require.NotNil(t, resp)
	})
}

func TestFindAnnotations(t *testing.T) {
	color := "red"
	name := "annoName"
	t.Run("service identity has correct permissions to get annotations dashboards and query datasources", func(t *testing.T) {
		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).
			Return(&PublicDashboard{Uid: "uid1", IsEnabled: true}, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboards.NewDashboard("dash1"), nil)
		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, nil)

		reqDTO := AnnotationsQueryDTO{
			From: 1,
			To:   2,
		}
		dash := dashboards.NewDashboard("testDashboard")

		items, err := service.FindAnnotations(context.Background(), reqDTO, "abc123")
		require.NoError(t, err)
		assert.Len(t, items, 0)

		_, svcIdent := identity.WithServiceIdentity(context.Background(), dash.OrgID)
		require.Equal(t, "*", svcIdent.GetPermissions()["datasources:query"][0])
		require.Equal(t, "*", svcIdent.GetPermissions()["dashboards:read"][0])
		require.Equal(t, "*", svcIdent.GetPermissions()["annotations:read"][0])
	})

	t.Run("Test events from tag queries overwrite built-in annotation queries and duplicate events are not returned", func(t *testing.T) {
		dash := dashboards.NewDashboard("test")
		grafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Target: &dashboard2.AnnotationTarget{
				Limit:    100,
				MatchAny: false,
				Tags:     nil,
				Type:     "dashboard",
			},
			Type: util.Pointer("dashboard"),
		}
		grafanaTagAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Target: &dashboard2.AnnotationTarget{
				Limit:    100,
				MatchAny: false,
				Tags:     []string{"tag1"},
				Type:     "tags",
			},
		}
		annos := []DashAnnotation{grafanaAnnotation, grafanaTagAnnotation}
		dashboard := AddAnnotationsToDashboard(t, dash, annos)

		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dashboard.UID, AnnotationsEnabled: true}

		annotationsRepo := &annotations.FakeAnnotationsRepo{}
		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)

		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, annotationsRepo)

		annotationsRepo.On("Find", mock.Anything, mock.Anything).Return([]*annotations.ItemDTO{
			{
				ID:          1,
				DashboardID: 1,
				PanelID:     1,
				Tags:        []string{"tag1"},
				TimeEnd:     2,
				Time:        2,
				Text:        "text",
			},
		}, nil).Maybe()

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		expected := AnnotationEvent{
			Id:          1,
			DashboardId: 1,
			PanelId:     0,
			Tags:        []string{"tag1"},
			IsRegion:    false,
			Text:        "text",
			Color:       color,
			Time:        2,
			TimeEnd:     2,
			Source:      grafanaTagAnnotation,
		}
		require.NoError(t, err)
		assert.Len(t, items, 1)
		assert.Equal(t, expected, items[0])
	})

	t.Run("Test panelId set to zero when annotation event is for a tags query", func(t *testing.T) {
		dash := dashboards.NewDashboard("test")
		grafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Target: &dashboard2.AnnotationTarget{
				Limit:    100,
				MatchAny: false,
				Tags:     []string{"tag1"},
				Type:     "tags",
			},
		}
		annos := []DashAnnotation{grafanaAnnotation}
		dashboard := AddAnnotationsToDashboard(t, dash, annos)

		annotationsRepo := &annotations.FakeAnnotationsRepo{}
		fakeStore := &FakePublicDashboardStore{}
		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dashboard.UID, AnnotationsEnabled: true}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)

		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, annotationsRepo)

		annotationsRepo.On("Find", mock.Anything, mock.Anything).Return([]*annotations.ItemDTO{
			{
				ID:          1,
				DashboardID: 1,
				PanelID:     1,
				Tags:        []string{},
				TimeEnd:     1,
				Time:        2,
				Text:        "text",
			},
		}, nil).Maybe()

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		expected := AnnotationEvent{
			Id:          1,
			DashboardId: 1,
			PanelId:     0,
			Tags:        []string{},
			IsRegion:    true,
			Text:        "text",
			Color:       color,
			Time:        2,
			TimeEnd:     1,
			Source:      grafanaAnnotation,
		}
		require.NoError(t, err)
		assert.Len(t, items, 1)
		assert.Equal(t, expected, items[0])
	})

	t.Run("Test can get grafana annotations and will skip annotation queries and disabled annotations", func(t *testing.T) {
		dash := dashboards.NewDashboard("test")
		disabledGrafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     false,
			Name:       name,
			IconColor:  color,
		}
		grafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Target: &dashboard2.AnnotationTarget{
				Limit:    100,
				MatchAny: true,
				Tags:     nil,
				Type:     "dashboard",
			},
			Type: util.Pointer("dashboard"),
		}
		queryAnnotation := DashAnnotation{
			Datasource: CreateDatasource("prometheus", "abc123"),
			Enable:     true,
			Name:       name,
		}
		annos := []DashAnnotation{grafanaAnnotation, queryAnnotation, disabledGrafanaAnnotation}
		dashboard := AddAnnotationsToDashboard(t, dash, annos)

		annotationsRepo := &annotations.FakeAnnotationsRepo{}
		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dashboard.UID, AnnotationsEnabled: true}
		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)

		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, annotationsRepo)

		annotationsRepo.On("Find", mock.Anything, mock.Anything).Return([]*annotations.ItemDTO{
			{
				ID:          1,
				DashboardID: 1,
				PanelID:     1,
				Tags:        []string{},
				TimeEnd:     1,
				Time:        2,
				Text:        "text",
			},
		}, nil).Maybe()

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		expected := AnnotationEvent{
			Id:          1,
			DashboardId: 1,
			PanelId:     1,
			Tags:        []string{},
			IsRegion:    true,
			Text:        "text",
			Color:       color,
			Time:        2,
			TimeEnd:     1,
			Source:      grafanaAnnotation,
		}
		require.NoError(t, err)
		assert.Len(t, items, 1)
		assert.Equal(t, expected, items[0])
	})

	t.Run("test will return nothing when dashboard has no annotations", func(t *testing.T) {
		dashboard := dashboards.NewDashboard("dashWithNoAnnotations")
		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dashboard.UID, AnnotationsEnabled: true}
		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)
		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, nil)

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		require.NoError(t, err)
		assert.Empty(t, items)
	})

	t.Run("test will return nothing when pubdash annotations are disabled", func(t *testing.T) {
		dash := dashboards.NewDashboard("test")
		grafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Target: &dashboard2.AnnotationTarget{
				Limit:    100,
				MatchAny: false,
				Tags:     nil,
				Type:     "dashboard",
			},
			Type: util.Pointer("dashboard"),
		}
		annos := []DashAnnotation{grafanaAnnotation}
		dashboard := AddAnnotationsToDashboard(t, dash, annos)
		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dashboard.UID, AnnotationsEnabled: false}
		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)
		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, nil)

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		require.NoError(t, err)
		assert.Empty(t, items)
	})

	t.Run("test will error when annotations repo returns an error", func(t *testing.T) {
		grafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Target: &dashboard2.AnnotationTarget{
				Limit:    100,
				MatchAny: false,
				Tags:     []string{"tag1"},
				Type:     "tags",
			},
		}
		dash := dashboards.NewDashboard("test")
		annotationsRepo := &annotations.FakeAnnotationsRepo{}
		annotationsRepo.On("Find", mock.Anything, mock.Anything).Return(nil, errors.New("failed")).Maybe()
		annos := []DashAnnotation{grafanaAnnotation}
		dash = AddAnnotationsToDashboard(t, dash, annos)
		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dash.UID, AnnotationsEnabled: true}
		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dash, nil)

		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, annotationsRepo)

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		require.Error(t, err)
		require.Nil(t, items)
	})

	t.Run("Test find annotations does not panics when Target in datasource is nil", func(t *testing.T) {
		dash := dashboards.NewDashboard("test")
		grafanaAnnotation := DashAnnotation{
			Datasource: CreateDatasource("grafana", "grafana"),
			Enable:     true,
			Name:       name,
			IconColor:  color,
			Type:       util.Pointer("dashboard"),
			Target:     nil,
		}

		annos := []DashAnnotation{grafanaAnnotation}
		dashboard := AddAnnotationsToDashboard(t, dash, annos)
		pubdash := &PublicDashboard{Uid: "uid1", IsEnabled: true, OrgId: 1, DashboardUid: dashboard.UID, AnnotationsEnabled: true}

		fakeStore := &FakePublicDashboardStore{}
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeStore.On("FindByAccessToken", mock.Anything, mock.AnythingOfType("string")).Return(pubdash, nil)
		fakeDashboardService := &dashboards.FakeDashboardService{}
		fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(dashboard, nil)
		annotationsRepo := &annotations.FakeAnnotationsRepo{}
		annotationsRepo.On("Find", mock.Anything, mock.Anything).Return([]*annotations.ItemDTO{
			{
				ID:          1,
				DashboardID: 1,
				PanelID:     1,
				Tags:        []string{"tag1"},
				TimeEnd:     2,
				Time:        2,
				Text:        "this is an annotation",
			},
		}, nil).Maybe()

		service, _, _ := newPublicDashboardServiceImpl(t, nil, nil, fakeStore, fakeDashboardService, annotationsRepo)

		items, err := service.FindAnnotations(context.Background(), AnnotationsQueryDTO{}, "abc123")

		expected := AnnotationEvent{
			Id:          1,
			DashboardId: 1,
			PanelId:     1,
			Tags:        []string{"tag1"},
			IsRegion:    false,
			Text:        "this is an annotation",
			Color:       color,
			Time:        2,
			TimeEnd:     2,
			Source:      grafanaAnnotation,
		}
		require.NoError(t, err)
		assert.Len(t, items, 1)
		assert.Equal(t, expected, items[0])
	})
}

func TestGetMetricRequest(t *testing.T) {
	service, sqlStore, cfg := newPublicDashboardServiceImpl(t, nil, nil, nil, nil, nil)
	dashboardStore, err := dashboardsDB.ProvideDashboardStore(sqlStore, cfg, featuremgmt.WithFeatures(), tagimpl.ProvideService(sqlStore))
	require.NoError(t, err)
	dashboard := insertTestDashboard(t, dashboardStore, "testDashie", 1, 0, "", true, []map[string]interface{}{}, nil)

	publicDashboard := &PublicDashboard{
		Uid:          "1",
		DashboardUid: dashboard.UID,
		IsEnabled:    true,
		AccessToken:  "abc123",
	}

	t.Run("will return an error when validation fails", func(t *testing.T) {
		publicDashboardQueryDTO := PublicDashboardQueryDTO{
			IntervalMs:    int64(-1),
			MaxDataPoints: int64(-1),
		}

		_, err := service.GetMetricRequest(context.Background(), dashboard, publicDashboard, 1, publicDashboardQueryDTO)

		require.Error(t, err)
	})

	t.Run("will not return an error when validation succeeds", func(t *testing.T) {
		publicDashboardQueryDTO := PublicDashboardQueryDTO{
			IntervalMs:    int64(1),
			MaxDataPoints: int64(1),
		}
		from, to := internal.GetTimeRangeFromDashboard(t, dashboard.Data)

		metricReq, err := service.GetMetricRequest(context.Background(), dashboard, publicDashboard, 1, publicDashboardQueryDTO)

		require.NoError(t, err)
		require.Equal(t, from, metricReq.From)
		require.Equal(t, to, metricReq.To)
	})
}

func TestBuildMetricRequest(t *testing.T) {
	fakeDashboardService := &dashboards.FakeDashboardService{}
	service, sqlStore, cfg := newPublicDashboardServiceImpl(t, nil, nil, nil, fakeDashboardService, nil)

	dashboardStore, err := dashboardsDB.ProvideDashboardStore(sqlStore, cfg, featuremgmt.WithFeatures(), tagimpl.ProvideService(sqlStore))
	require.NoError(t, err)
	publicDashboard := insertTestDashboard(t, dashboardStore, "testDashie", 1, 0, "", true, []map[string]interface{}{}, nil)
	nonPublicDashboard := insertTestDashboard(t, dashboardStore, "testNonPublicDashie", 1, 0, "", true, []map[string]interface{}{}, nil)
	from, to := internal.GetTimeRangeFromDashboard(t, publicDashboard.Data)

	fakeDashboardService.On("GetDashboard", mock.Anything, mock.Anything, mock.Anything).Return(publicDashboard, nil)

	publicDashboardQueryDTO := PublicDashboardQueryDTO{
		IntervalMs:    int64(10000000),
		MaxDataPoints: int64(200),
	}

	isEnabled := true
	dto := &SavePublicDashboardDTO{
		DashboardUid: publicDashboard.UID,
		OrgID:        9999999,
		PublicDashboard: &PublicDashboardDTO{
			IsEnabled: &isEnabled,
		},
	}

	publicDashboardPD, err := service.Create(context.Background(), SignedInUser, dto)
	require.NoError(t, err)

	isEnabled = false
	nonPublicDto := &SavePublicDashboardDTO{
		DashboardUid: nonPublicDashboard.UID,
		OrgID:        9999999,
		PublicDashboard: &PublicDashboardDTO{
			IsEnabled: &isEnabled,
		},
	}

	_, err = service.Create(context.Background(), SignedInUser, nonPublicDto)
	require.NoError(t, err)

	t.Run("extracts queries from provided dashboard", func(t *testing.T) {
		reqDTO, err := service.buildMetricRequest(
			publicDashboard,
			publicDashboardPD,
			1,
			publicDashboardQueryDTO,
		)
		require.NoError(t, err)

		require.Equal(t, from, reqDTO.From)
		require.Equal(t, to, reqDTO.To)

		for i := range reqDTO.Queries {
			require.Equal(t, publicDashboardQueryDTO.IntervalMs, reqDTO.Queries[i].Get("intervalMs").MustInt64())
			require.Equal(t, publicDashboardQueryDTO.MaxDataPoints, reqDTO.Queries[i].Get("maxDataPoints").MustInt64())
		}

		require.Len(t, reqDTO.Queries, 2)

		require.Equal(
			t,
			simplejson.NewFromAny(map[string]interface{}{
				"datasource": map[string]interface{}{
					"type": "mysql",
					"uid":  "ds1",
				},
				"intervalMs":      int64(10000000),
				"maxDataPoints":   int64(200),
				"queryCachingTTL": int64(0),
				"refId":           "A",
			}),
			reqDTO.Queries[0],
		)

		require.Equal(
			t,
			simplejson.NewFromAny(map[string]interface{}{
				"datasource": map[string]interface{}{
					"type": "prometheus",
					"uid":  "ds2",
				},
				"intervalMs":      int64(10000000),
				"maxDataPoints":   int64(200),
				"queryCachingTTL": int64(0),
				"refId":           "B",
			}),
			reqDTO.Queries[1],
		)
	})

	t.Run("returns an error when panel missing", func(t *testing.T) {
		_, err := service.buildMetricRequest(
			publicDashboard,
			publicDashboardPD,
			49,
			publicDashboardQueryDTO,
		)

		require.ErrorContains(t, err, ErrPanelNotFound.Error())
	})

	t.Run("metric request built with hidden query", func(t *testing.T) {
		hiddenQuery := map[string]interface{}{
			"datasource": map[string]interface{}{
				"type": "mysql",
				"uid":  "ds1",
			},
			"hide":  true,
			"refId": "A",
		}
		nonHiddenQuery := map[string]interface{}{
			"datasource": map[string]interface{}{
				"type": "prometheus",
				"uid":  "ds2",
			},
			"refId": "B",
		}

		customPanels := []interface{}{
			map[string]interface{}{
				"id": 1,
				"datasource": map[string]interface{}{
					"uid": "ds1",
				},
				"targets": []interface{}{hiddenQuery, nonHiddenQuery},
			}}

		publicDashboard := insertTestDashboard(t, dashboardStore, "testDashWithHiddenQuery", 1, 0, "", true, []map[string]interface{}{}, customPanels)

		reqDTO, err := service.buildMetricRequest(
			publicDashboard,
			publicDashboardPD,
			1,
			publicDashboardQueryDTO,
		)
		require.NoError(t, err)

		require.Equal(t, from, reqDTO.From)
		require.Equal(t, to, reqDTO.To)

		for i := range reqDTO.Queries {
			require.Equal(t, publicDashboardQueryDTO.IntervalMs, reqDTO.Queries[i].Get("intervalMs").MustInt64())
			require.Equal(t, publicDashboardQueryDTO.MaxDataPoints, reqDTO.Queries[i].Get("maxDataPoints").MustInt64())
		}

		require.Len(t, reqDTO.Queries, 1)

		require.Equal(
			t,
			simplejson.NewFromAny(nonHiddenQuery),
			reqDTO.Queries[0],
		)
	})
}

func TestGroupQueriesByPanelId(t *testing.T) {
	t.Run("can extract queries from dashboard with panel datasource string that has no datasource on panel targets", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(oldStyleDashboard))
		require.NoError(t, err)
		queries := groupQueriesByPanelId(json)

		panelId := int64(2)
		queriesByDatasource := groupQueriesByDataSource(t, queries[panelId])
		require.Len(t, queriesByDatasource[0], 1)
	})
	t.Run("will delete exemplar property from target if exists", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithQueriesExemplarEnabled))
		require.NoError(t, err)
		queries := groupQueriesByPanelId(json)

		panelId := int64(2)
		queriesByDatasource := groupQueriesByDataSource(t, queries[panelId])
		for _, query := range queriesByDatasource[0] {
			_, ok := query.CheckGet("exemplar")
			require.False(t, ok)
		}
	})
	t.Run("can extract queries from dashboard with panel json datasource that has no datasource on panel targets", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithTargetsWithNoDatasources))
		require.NoError(t, err)
		queries := groupQueriesByPanelId(json)

		panelId := int64(2)
		queriesByDatasource := groupQueriesByDataSource(t, queries[panelId])
		require.Len(t, queriesByDatasource[0], 2)
	})
	t.Run("can extract no queries from empty dashboard", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(`{"panels": {}}`))
		require.NoError(t, err)

		queries := groupQueriesByPanelId(json)
		require.Len(t, queries, 0)
	})

	t.Run("can extract no queries from empty panel", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithNoQueries))
		require.NoError(t, err)

		queries := groupQueriesByPanelId(json)
		require.Len(t, queries, 1)
		require.Contains(t, queries, int64(2))
		require.Len(t, queries[2], 0)
	})

	t.Run("can extract queries from panels", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithQueriesExemplarEnabled))
		require.NoError(t, err)

		queries := groupQueriesByPanelId(json)
		require.Len(t, queries, 1)
		require.Contains(t, queries, int64(2))
		require.Len(t, queries[2], 2)
		query, err := queries[2][0].MarshalJSON()
		require.NoError(t, err)
		require.JSONEq(t, `{
            "datasource": {
              "type": "prometheus",
              "uid": "_yxMP8Ynk"
            },
            "expr": "go_goroutines{job=\"$job\"}",
            "interval": "",
            "legendFormat": "",
            "refId": "A"
		}`, string(query))
		query, err = queries[2][1].MarshalJSON()
		require.NoError(t, err)
		require.JSONEq(t, `{
            "datasource": {
              "type": "prometheus",
              "uid": "promds2"
            },
            "expr": "query2",
            "interval": "",
            "legendFormat": "",
            "refId": "B"
		}`, string(query))
	})

	t.Run("can extract queries from old-style panels", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(oldStyleDashboard))
		require.NoError(t, err)

		queries := groupQueriesByPanelId(json)
		require.Len(t, queries, 1)
		require.Contains(t, queries, int64(2))
		require.Len(t, queries[2], 1)
		query, err := queries[2][0].MarshalJSON()
		require.NoError(t, err)
		require.JSONEq(t, `{
            "datasource": {
				"uid": "_yxMP8Ynk",
				"type": "public-ds"
			},
            "expr": "go_goroutines{job=\"$job\"}",
            "interval": "",
            "legendFormat": "",
            "refId": "A"
		}`, string(query))
	})

	t.Run("hidden queries in a panel with an expression not filtered", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithOneHiddenQuery))
		require.NoError(t, err)
		queries := groupQueriesByPanelId(json)[2]

		require.Len(t, queries, 3)
	})

	t.Run("all hidden queries in a panel with an expression not filtered", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithAllHiddenQueries))
		require.NoError(t, err)
		queries := groupQueriesByPanelId(json)[2]

		require.Len(t, queries, 3)
	})

	t.Run("queries inside panels inside rows are returned", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithRowsAndOneHiddenQuery))
		require.NoError(t, err)

		queries := groupQueriesByPanelId(json)
		for idx := range queries {
			assert.NotNil(t, queries[idx])
		}

		assert.Len(t, queries, 2)
	})

	t.Run("hidden queries are not returned", func(t *testing.T) {
		json, err := simplejson.NewJson([]byte(dashboardWithRowsAndOneHiddenQuery))
		require.NoError(t, err)

		queries := groupQueriesByPanelId(json)
		var totalQueries int
		for idx := range queries {
			totalQueries += len(queries[idx])
			assert.NotNil(t, queries[idx])
		}

		assert.Equal(t, 3, totalQueries)
	})
}

func TestGroupQueriesByDataSource(t *testing.T) {
	t.Run("can divide queries by datasource", func(t *testing.T) {
		queries := []*simplejson.Json{
			simplejson.MustJson([]byte(`{
				"datasource": {
					"type": "prometheus",
					"uid": "_yxMP8Ynk"
				},
				"exemplar": true,
				"expr": "go_goroutines{job=\"$job\"}",
				"interval": "",
				"legendFormat": "",
				"refId": "A"
			}`)),
			simplejson.MustJson([]byte(`{
				"datasource": {
					"type": "prometheus",
					"uid": "promds2"
				},
				"exemplar": true,
				"expr": "query2",
				"interval": "",
				"legendFormat": "",
				"refId": "B"
			}`)),
		}

		queriesByDatasource := groupQueriesByDataSource(t, queries)
		require.Len(t, queriesByDatasource, 2)
		require.Contains(t, queriesByDatasource, []*simplejson.Json{simplejson.MustJson([]byte(`{
            "datasource": {
              "type": "prometheus",
              "uid": "_yxMP8Ynk"
            },
            "exemplar": true,
            "expr": "go_goroutines{job=\"$job\"}",
            "interval": "",
            "legendFormat": "",
            "refId": "A"
		}`))})
		require.Contains(t, queriesByDatasource, []*simplejson.Json{simplejson.MustJson([]byte(`{
            "datasource": {
              "type": "prometheus",
              "uid": "promds2"
            },
            "exemplar": true,
            "expr": "query2",
            "interval": "",
            "legendFormat": "",
            "refId": "B"
		}`))})
	})
}

func TestSanitizeMetadataFromQueryData(t *testing.T) {
	t.Run("can remove ExecutedQueryString from metadata", func(t *testing.T) {
		fakeResponse := &backend.QueryDataResponse{
			Responses: backend.Responses{
				"A": backend.DataResponse{
					Frames: data.Frames{
						&data.Frame{
							Name: "1",
							Meta: &data.FrameMeta{
								ExecutedQueryString: "Test1",
								Custom: map[string]string{
									"test1": "test1",
								},
							},
						},
						&data.Frame{
							Name: "2",
							Meta: &data.FrameMeta{
								ExecutedQueryString: "Test2",
								Custom: map[string]string{
									"test2": "test2",
								},
							},
						},
					},
				},
				"B": backend.DataResponse{
					Frames: data.Frames{
						&data.Frame{
							Name: "3",
							Meta: &data.FrameMeta{
								ExecutedQueryString: "Test3",
							},
						},
					},
				},
			},
		}
		sanitizeMetadataFromQueryData(fakeResponse)
		assert.Equal(t, fakeResponse.Responses["A"].Frames[0].Meta.ExecutedQueryString, "")
		assert.Equal(t, fakeResponse.Responses["A"].Frames[0].Meta.Custom, map[string]string{"test1": "test1"})
		assert.Equal(t, fakeResponse.Responses["A"].Frames[1].Meta.ExecutedQueryString, "")
		assert.Equal(t, fakeResponse.Responses["A"].Frames[1].Meta.Custom, map[string]string{"test2": "test2"})
		assert.Equal(t, fakeResponse.Responses["B"].Frames[0].Meta.ExecutedQueryString, "")
		assert.Nil(t, fakeResponse.Responses["B"].Frames[0].Meta.Custom)
	})
}

func TestBuildTimeSettings(t *testing.T) {
	var defaultDashboardData = simplejson.NewFromAny(map[string]interface{}{
		"time": map[string]interface{}{
			"from": "2022-09-01T00:00:00.000Z", "to": "2022-09-01T12:00:00.000Z",
		},
		"timezone": "America/Argentina/Mendoza",
	})
	defaultFromMs, defaultToMs := internal.GetTimeRangeFromDashboard(t, defaultDashboardData)

	dashboardDataWithPanelRelativeTime, err := simplejson.NewJson([]byte(`
	{
		"panels": [
			{"id": 1, "timeFrom": "now-1d/d"}
		],
		"time": {
			"from": "now-6h", "to": "now"
		},
		"timezone": "Europe/Madrid"
	}`))
	require.NoError(t, err)

	fakeTimezone, _ := time.LoadLocation("Europe/Madrid")
	fakeNow := time.Date(2018, 12, 9, 20, 30, 0, 0, fakeTimezone)

	// stub time range construction to have a fixed time.Now and be able to tests relative time ranges
	NewTimeRange = func(from, to string) gtime.TimeRange {
		return gtime.TimeRange{
			From: from,
			To:   to,
			Now:  fakeNow,
		}
	}

	startOfYesterdayMadrid, endOfYesterdayMadrid := getStartAndEndOfTheDayBefore(fakeNow, "Europe/Madrid")

	// the day before fakeNow in Australia/Sydney timezone is not the same day before as in Europe/Madrid
	startOfYesterdaySydney, endOfYesterdaySydney := getStartAndEndOfTheDayBefore(fakeNow, "Australia/Sydney")
	startOfYesterdayUTC, endOfYesterdayUTC := getStartAndEndOfTheDayBefore(fakeNow, "UTC")

	selectionFromMs := strconv.FormatInt(time.Now().UnixMilli(), 10)
	selectionToMs := strconv.FormatInt(time.Now().Add(time.Hour).UnixMilli(), 10)

	testCases := []struct {
		name      string
		dashboard *dashboards.Dashboard
		pubdash   *PublicDashboard
		reqDTO    PublicDashboardQueryDTO
		panelID   int64
		want      TimeSettings
	}{
		{
			name:      "should return default time range with timezone with relative time range",
			dashboard: &dashboards.Dashboard{Data: buildJsonDataWithTimeRange("now-1d/d", "now-1d/d", "Australia/Sydney")},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO:    PublicDashboardQueryDTO{},
			want: TimeSettings{
				From: strconv.FormatInt(startOfYesterdaySydney.UnixMilli(), 10),
				To:   strconv.FormatInt(endOfYesterdaySydney.UnixMilli(), 10),
			},
		},
		{
			name:      "should return default time range with UTC timezone with relative time range with unknown timezone",
			dashboard: &dashboards.Dashboard{Data: buildJsonDataWithTimeRange("now-1d/d", "now-1d/d", "browser")},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO:    PublicDashboardQueryDTO{},
			want: TimeSettings{
				From: strconv.FormatInt(startOfYesterdayUTC.UnixMilli(), 10),
				To:   strconv.FormatInt(endOfYesterdayUTC.UnixMilli(), 10),
			},
		},
		{
			name:      "should return default time range with timezone with relative time range if time selection is not enabled",
			dashboard: &dashboards.Dashboard{Data: buildJsonDataWithTimeRange("now-1d/d", "now-1d/d", "Australia/Sydney")},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO: PublicDashboardQueryDTO{
				TimeRange: TimeRangeDTO{
					Timezone: "Europe/Madrid",
				}},
			want: TimeSettings{
				From: strconv.FormatInt(startOfYesterdaySydney.UnixMilli(), 10),
				To:   strconv.FormatInt(endOfYesterdaySydney.UnixMilli(), 10),
			},
		},
		{
			name:      "should return user time range with dashboard timezone with relative time range",
			dashboard: &dashboards.Dashboard{Data: buildJsonDataWithTimeRange("now-1d/d", "now-1d/d", "Europe/Madrid")},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO:    PublicDashboardQueryDTO{},
			want: TimeSettings{
				From: strconv.FormatInt(startOfYesterdayMadrid.UnixMilli(), 10),
				To:   strconv.FormatInt(endOfYesterdayMadrid.UnixMilli(), 10),
			},
		},
		{
			name:      "should return user time range with dashboard timezone with relative time range for the last hour",
			dashboard: &dashboards.Dashboard{Data: buildJsonDataWithTimeRange("now-1h", "now", "Europe/Madrid")},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO:    PublicDashboardQueryDTO{},
			want: TimeSettings{
				From: strconv.FormatInt(fakeNow.Add(-time.Hour).UnixMilli(), 10),
				To:   strconv.FormatInt(fakeNow.UnixMilli(), 10),
			},
		},
		{
			name:      "should use dashboard time if pubdash time empty",
			dashboard: &dashboards.Dashboard{Data: defaultDashboardData},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO:    PublicDashboardQueryDTO{},
			want: TimeSettings{
				From: defaultFromMs,
				To:   defaultToMs,
			},
		},
		{
			name:      "should use dashboard time when time selection is disabled",
			dashboard: &dashboards.Dashboard{Data: defaultDashboardData},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO: PublicDashboardQueryDTO{
				TimeRange: TimeRangeDTO{
					From: selectionFromMs,
					To:   selectionToMs,
				},
			},
			want: TimeSettings{
				From: defaultFromMs,
				To:   defaultToMs,
			},
		},
		{
			name:      "should use selected values if time selection is enabled",
			dashboard: &dashboards.Dashboard{Data: defaultDashboardData},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: true},
			reqDTO: PublicDashboardQueryDTO{
				TimeRange: TimeRangeDTO{
					From: selectionFromMs,
					To:   selectionToMs,
				},
			},
			want: TimeSettings{
				From: selectionFromMs,
				To:   selectionToMs,
			},
		},
		{
			name:      "should use default values if time selection is enabled but the time range is empty",
			dashboard: &dashboards.Dashboard{Data: defaultDashboardData},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: true},
			reqDTO: PublicDashboardQueryDTO{
				TimeRange: TimeRangeDTO{},
			},
			want: TimeSettings{
				From: defaultFromMs,
				To:   defaultToMs,
			},
		},
		{
			name:      "should use panel relative time when time selection is disabled",
			dashboard: &dashboards.Dashboard{Data: dashboardDataWithPanelRelativeTime},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: false},
			reqDTO: PublicDashboardQueryDTO{
				TimeRange: TimeRangeDTO{
					From: selectionFromMs,
					To:   selectionToMs,
				},
			},
			panelID: 1,
			want: TimeSettings{
				From: strconv.FormatInt(startOfYesterdayMadrid.UnixMilli(), 10),
				To:   strconv.FormatInt(fakeNow.UnixMilli(), 10),
			},
		},
		{
			name:      "should use selected values if time selection is enabled for panels with relative time set",
			dashboard: &dashboards.Dashboard{Data: dashboardDataWithPanelRelativeTime},
			pubdash:   &PublicDashboard{TimeSelectionEnabled: true},
			reqDTO: PublicDashboardQueryDTO{
				TimeRange: TimeRangeDTO{
					From: selectionFromMs,
					To:   selectionToMs,
				},
			},
			panelID: 1,
			want: TimeSettings{
				From: selectionFromMs,
				To:   selectionToMs,
			},
		},
	}

	for _, test := range testCases {
		t.Run(test.name, func(t *testing.T) {
			assert.Equal(t, test.want, buildTimeSettings(test.dashboard, test.reqDTO, test.pubdash, test.panelID))
		})
	}
}

func groupQueriesByDataSource(t *testing.T, queries []*simplejson.Json) (result [][]*simplejson.Json) {
	t.Helper()
	byDataSource := make(map[string][]*simplejson.Json)

	for _, query := range queries {
		uid := getDataSourceUidFromJson(query)
		byDataSource[uid] = append(byDataSource[uid], query)
	}

	for _, queries := range byDataSource {
		result = append(result, queries)
	}

	return
}

func getStartAndEndOfTheDayBefore(fakeNow time.Time, timezoneName string) (time.Time, time.Time) {
	timezone, _ := time.LoadLocation(timezoneName)
	fakeNowWithTimezone := fakeNow.In(timezone)
	yy, mm, dd := fakeNowWithTimezone.Add(-24 * time.Hour).Date()
	startOfYesterdaySydney := time.Date(yy, mm, dd, 0, 0, 0, 0, timezone)
	endOfYesterdaySydney := time.Date(yy, mm, dd, 23, 59, 59, 999999999, timezone)
	return startOfYesterdaySydney, endOfYesterdaySydney
}

func buildJsonDataWithTimeRange(from, to, timezone string) *simplejson.Json {
	return simplejson.NewFromAny(map[string]interface{}{
		"time": map[string]interface{}{
			"from": from, "to": to,
		},
		"timezone": timezone,
	})
}