Data Trails: Cleanup and explore+share buttons (#81062)

* Share button works now. Removed add to dashboard button for now

* WIP explore link

* Remove settings dropdown for now

* Use getExploreUrl to generate explore link

* Fix conflicts

* Update betterer

* Navigate to a new trail when the recent trails list is empty

* Address PR comments

.betterer.results

@@ -4206,6 +4206,10 @@ exports[`better eslint`] = {
       [0, 0, 0, "Do not use any type assertions.", "11"],
       [0, 0, 0, "Do not use any type assertions.", "12"]
     ],
+    "public/app/features/trails/MetricScene.tsx:5381": [
+      [0, 0, 0, "Do not use any type assertions.", "0"],
+      [0, 0, 0, "Do not use any type assertions.", "1"]
+    ],
     "public/app/features/transformers/FilterByValueTransformer/ValueMatchers/BasicMatcherEditor.tsx:5381": [
       [0, 0, 0, "Unexpected any. Specify a different type.", "0"]
     ],

public/app/features/trails/DataTrail.tsx

@@ -167,7 +167,7 @@ export class DataTrail extends SceneObjectBase<DataTrailState> {
   }
 
   static Component = ({ model }: SceneComponentProps<DataTrail>) => {
-    const { controls, topScene, history, settings } = model.useState();
+    const { controls, topScene, history } = model.useState();
     const styles = useStyles2(getStyles);
 
     return (
@@ -178,7 +178,6 @@ export class DataTrail extends SceneObjectBase<DataTrailState> {
             {controls.map((control) => (
               <control.Component key={control.state.key} model={control} />
             ))}
-            <settings.Component model={settings} />
           </div>
         )}
         <div className={styles.body}>{topScene && <topScene.Component model={topScene} />}</div>

public/app/features/trails/DataTrailCard.tsx

@@ -2,12 +2,12 @@ import { css } from '@emotion/css';
 import React from 'react';
 
 import { GrafanaTheme2 } from '@grafana/data';
-import { getDataSourceSrv } from '@grafana/runtime';
 import { AdHocFiltersVariable, sceneGraph } from '@grafana/scenes';
 import { useStyles2, Stack, Tooltip, Button } from '@grafana/ui';
 
 import { DataTrail } from './DataTrail';
-import { LOGS_METRIC, VAR_DATASOURCE_EXPR, VAR_FILTERS } from './shared';
+import { LOGS_METRIC, VAR_FILTERS } from './shared';
+import { getDataSource, getDataSourceName } from './utils';
 
 export interface Props {
   trail: DataTrail;
@@ -67,14 +67,6 @@ function getMetricName(metric?: string) {
   return metric;
 }
 
-function getDataSource(trail: DataTrail) {
-  return sceneGraph.interpolate(trail, VAR_DATASOURCE_EXPR);
-}
-
-function getDataSourceName(dataSourceUid: string) {
-  return getDataSourceSrv().getInstanceSettings(dataSourceUid)?.name || dataSourceUid;
-}
-
 function getStyles(theme: GrafanaTheme2) {
   return {
     container: css({

public/app/features/trails/DataTrailsHome.tsx

@@ -1,5 +1,6 @@
 import { css } from '@emotion/css';
 import React, { useState } from 'react';
+import { Redirect } from 'react-router-dom';
 
 import { GrafanaTheme2 } from '@grafana/data';
 import { SceneComponentProps, sceneGraph, SceneObject, SceneObjectBase, SceneObjectState } from '@grafana/scenes';
@@ -10,7 +11,7 @@ import { DataTrail } from './DataTrail';
 import { DataTrailCard } from './DataTrailCard';
 import { DataTrailsApp } from './DataTrailsApp';
 import { getTrailStore } from './TrailStore/TrailStore';
-import { getDatasourceForNewTrail, newMetricsTrail } from './utils';
+import { getDatasourceForNewTrail, getUrlForTrail, newMetricsTrail } from './utils';
 
 export interface DataTrailsHomeState extends SceneObjectState {}
 
@@ -43,6 +44,13 @@ export class DataTrailsHome extends SceneObjectBase<DataTrailsHomeState> {
       setLastDelete(Date.now()); // trigger re-render
     };
 
+    // If there are no recent trails, don't show home page and create a new trail
+    if (!getTrailStore().recent.length) {
+      const trail = newMetricsTrail(getDatasourceForNewTrail());
+      getTrailStore().setRecentTrail(trail);
+      return <Redirect to={getUrlForTrail(trail)} />;
+    }
+
     return (
       <div className={styles.container}>
         <Stack direction="column" gap={1}>

public/app/features/trails/MetricScene.tsx

@@ -17,11 +17,14 @@ import {
 } from '@grafana/scenes';
 import { ToolbarButton, Box, Stack, Icon, TabsBar, Tab, useStyles2 } from '@grafana/ui';
 
+import { getExploreUrl } from '../../core/utils/explore';
+
 import { buildBreakdownActionScene } from './ActionTabs/BreakdownScene';
 import { buildMetricOverviewScene } from './ActionTabs/MetricOverviewScene';
 import { buildRelatedMetricsScene } from './ActionTabs/RelatedMetricsScene';
 import { getAutoQueriesForMetric } from './AutomaticMetricQueries/AutoQueryEngine';
 import { AutoVizPanel } from './AutomaticMetricQueries/AutoVizPanel';
+import { ShareTrailButton } from './ShareTrailButton';
 import { getTrailStore } from './TrailStore/TrailStore';
 import {
   ActionViewDefinition,
@@ -33,7 +36,7 @@ import {
   VAR_GROUP_BY,
   VAR_METRIC_EXPR,
 } from './shared';
-import { getTrailFor } from './utils';
+import { getDataSource, getTrailFor } from './utils';
 
 export interface MetricSceneState extends SceneObjectState {
   body: SceneFlexLayout;
@@ -113,6 +116,32 @@ export class MetricActionBar extends SceneObjectBase<MetricActionBarState> {
     this.publishEvent(new OpenEmbeddedTrailEvent(), true);
   };
 
+  public getLinkToExplore = async () => {
+    const metricScene = sceneGraph.getAncestor(this, MetricScene);
+    const trail = getTrailFor(this);
+    const dsValue = getDataSource(trail);
+
+    const flexItem = metricScene.state.body.state.children[0] as SceneFlexItem;
+    const autoVizPanel = flexItem.state.body as AutoVizPanel;
+    const queries = autoVizPanel.state.queryDef?.queries || [];
+    const timeRange = sceneGraph.getTimeRange(autoVizPanel);
+
+    return getExploreUrl({
+      queries,
+      dsRef: { uid: dsValue },
+      timeRange: timeRange.state.value,
+      scopedVars: { __sceneObject: { value: metricScene } },
+    });
+  };
+
+  public openExploreLink = async () => {
+    this.getLinkToExplore().then((link) => {
+      // We use window.open instead of a Link or <a> because we want to compute the explore link when clicking,
+      // if we precompute it we have to keep track of a lot of dependencies
+      window.open(link, '_blank');
+    });
+  };
+
   public static Component = ({ model }: SceneComponentProps<MetricActionBar>) => {
     const metricScene = sceneGraph.getAncestor(model, MetricScene);
     const styles = useStyles2(getStyles);
@@ -129,11 +158,13 @@ export class MetricActionBar extends SceneObjectBase<MetricActionBarState> {
       <Box paddingY={1}>
         <div className={styles.actions}>
           <Stack gap={2}>
-            <ToolbarButton variant={'canvas'} icon="compass" tooltip="Open in explore (todo)" disabled>
-              Explore
-            </ToolbarButton>
-            <ToolbarButton variant={'canvas'}>Add to dashboard</ToolbarButton>
-            <ToolbarButton variant={'canvas'} icon="share-alt" tooltip="Copy url (todo)" disabled />
+            <ToolbarButton
+              variant={'canvas'}
+              icon="compass"
+              tooltip="Open in explore"
+              onClick={model.openExploreLink}
+            ></ToolbarButton>
+            <ShareTrailButton trail={trail} />
             <ToolbarButton
               variant={'canvas'}
               icon={

public/app/features/trails/ShareTrailButton.tsx

@@ -0,0 +1,28 @@
+import React, { useState } from 'react';
+import { useLocation } from 'react-use';
+
+import { ToolbarButton } from '@grafana/ui';
+
+import { DataTrail } from './DataTrail';
+import { getUrlForTrail } from './utils';
+
+interface ShareTrailButtonState {
+  trail: DataTrail;
+}
+
+export const ShareTrailButton = ({ trail }: ShareTrailButtonState) => {
+  const { origin } = useLocation();
+  const [tooltip, setTooltip] = useState('Copy url');
+
+  const onShare = () => {
+    if (navigator.clipboard) {
+      navigator.clipboard.writeText(origin + getUrlForTrail(trail));
+      setTooltip('Copied!');
+      setTimeout(() => {
+        setTooltip('Copy url');
+      }, 2000);
+    }
+  };
+
+  return <ToolbarButton variant={'canvas'} icon={'share-alt'} tooltip={tooltip} onClick={onShare} />;
+};

public/app/features/trails/utils.ts

@@ -1,5 +1,5 @@
 import { urlUtil } from '@grafana/data';
-import { config } from '@grafana/runtime';
+import { config, getDataSourceSrv } from '@grafana/runtime';
 import { getUrlSyncManager, sceneGraph, SceneObject, SceneObjectUrlValues, SceneTimeRange } from '@grafana/scenes';
 
 import { getDatasourceSrv } from '../plugins/datasource_srv';
@@ -50,6 +50,14 @@ export function getMetricSceneFor(model: SceneObject): MetricScene {
   throw new Error('Unable to find trail');
 }
 
+export function getDataSource(trail: DataTrail) {
+  return sceneGraph.interpolate(trail, VAR_DATASOURCE_EXPR);
+}
+
+export function getDataSourceName(dataSourceUid: string) {
+  return getDataSourceSrv().getInstanceSettings(dataSourceUid)?.name || dataSourceUid;
+}
+
 export function getDatasourceForNewTrail(): string | undefined {
   const prevTrail = getTrailStore().recent[0];
   if (prevTrail) {