import { css, cx } from '@emotion/css';
import { capitalize } from 'lodash';
import memoizeOne from 'memoize-one';
import React, { createRef, PureComponent } from 'react';

import {
  AbsoluteTimeRange,
  CoreApp,
  DataFrame,
  DataHoverClearEvent,
  DataHoverEvent,
  DataQueryResponse,
  EventBus,
  ExploreLogsPanelState,
  ExplorePanelsState,
  FeatureState,
  Field,
  GrafanaTheme2,
  LinkModel,
  LoadingState,
  LogLevel,
  LogRowContextOptions,
  LogRowModel,
  LogsDedupDescription,
  LogsDedupStrategy,
  LogsMetaItem,
  LogsSortOrder,
  rangeUtil,
  RawTimeRange,
  serializeStateToUrlParam,
  SplitOpen,
  TimeRange,
  TimeZone,
  urlUtil,
} from '@grafana/data';
import { config, reportInteraction } from '@grafana/runtime';
import { DataQuery } from '@grafana/schema';
import {
  Button,
  FeatureBadge,
  InlineField,
  InlineFieldRow,
  InlineSwitch,
  PanelChrome,
  RadioButtonGroup,
  Themeable2,
  withTheme2,
} from '@grafana/ui';
import store from 'app/core/store';
import { createAndCopyShortLink } from 'app/core/utils/shortLinks';
import { dispatch, getState } from 'app/store/store';

import { ExploreItemState } from '../../../types';
import { LogRows } from '../../logs/components/LogRows';
import { LogRowContextModal } from '../../logs/components/log-context/LogRowContextModal';
import { dedupLogRows, filterLogLevels } from '../../logs/logsModel';
import { getUrlStateFromPaneState } from '../hooks/useStateSync';
import { changePanelState } from '../state/explorePane';

import { LogsMetaRow } from './LogsMetaRow';
import LogsNavigation from './LogsNavigation';
import { getLogsTableHeight, LogsTableWrap } from './LogsTableWrap';
import { LogsVolumePanelList } from './LogsVolumePanelList';
import { SETTINGS_KEYS } from './utils/logs';

interface Props extends Themeable2 {
  width: number;
  splitOpen: SplitOpen;
  logRows: LogRowModel[];
  logsMeta?: LogsMetaItem[];
  logsSeries?: DataFrame[];
  logsQueries?: DataQuery[];
  visibleRange?: AbsoluteTimeRange;
  theme: GrafanaTheme2;
  loading: boolean;
  loadingState: LoadingState;
  absoluteRange: AbsoluteTimeRange;
  timeZone: TimeZone;
  scanning?: boolean;
  scanRange?: RawTimeRange;
  exploreId: string;
  datasourceType?: string;
  logsVolumeEnabled: boolean;
  logsVolumeData: DataQueryResponse | undefined;
  onSetLogsVolumeEnabled: (enabled: boolean) => void;
  loadLogsVolumeData: () => void;
  showContextToggle?: (row: LogRowModel) => boolean;
  onChangeTime: (range: AbsoluteTimeRange) => void;
  onClickFilterLabel?: (key: string, value: string, frame?: DataFrame) => void;
  onClickFilterOutLabel?: (key: string, value: string, frame?: DataFrame) => void;
  onStartScanning?: () => void;
  onStopScanning?: () => void;
  getRowContext?: (row: LogRowModel, origRow: LogRowModel, options: LogRowContextOptions) => Promise<any>;
  getRowContextQuery?: (row: LogRowModel, options?: LogRowContextOptions) => Promise<DataQuery | null>;
  getLogRowContextUi?: (row: LogRowModel, runContextQuery?: () => void) => React.ReactNode;
  getFieldLinks: (field: Field, rowIndex: number, dataFrame: DataFrame) => Array<LinkModel<Field>>;
  addResultsToCache: () => void;
  clearCache: () => void;
  eventBus: EventBus;
  panelState?: ExplorePanelsState;
  scrollElement?: HTMLDivElement;
  isFilterLabelActive?: (key: string, value: string, refId?: string) => Promise<boolean>;
  logsFrames?: DataFrame[];
  range: TimeRange;
  onClickFilterValue?: (value: string, refId?: string) => void;
  onClickFilterOutValue?: (value: string, refId?: string) => void;
}

export type LogsVisualisationType = 'table' | 'logs';

interface State {
  showLabels: boolean;
  showTime: boolean;
  wrapLogMessage: boolean;
  prettifyLogMessage: boolean;
  dedupStrategy: LogsDedupStrategy;
  hiddenLogLevels: LogLevel[];
  logsSortOrder: LogsSortOrder;
  isFlipping: boolean;
  displayedFields: string[];
  forceEscape: boolean;
  contextOpen: boolean;
  contextRow?: LogRowModel;
  tableFrame?: DataFrame;
  visualisationType?: LogsVisualisationType;
  logsContainer?: HTMLDivElement;
}

const scrollableLogsContainer = config.featureToggles.exploreScrollableLogsContainer;

// we need to define the order of these explicitly
const DEDUP_OPTIONS = [
  LogsDedupStrategy.none,
  LogsDedupStrategy.exact,
  LogsDedupStrategy.numbers,
  LogsDedupStrategy.signature,
];

class UnthemedLogs extends PureComponent<Props, State> {
  flipOrderTimer?: number;
  cancelFlippingTimer?: number;
  topLogsRef = createRef<HTMLDivElement>();
  logsVolumeEventBus: EventBus;

  state: State = {
    showLabels: store.getBool(SETTINGS_KEYS.showLabels, false),
    showTime: store.getBool(SETTINGS_KEYS.showTime, true),
    wrapLogMessage: store.getBool(SETTINGS_KEYS.wrapLogMessage, true),
    prettifyLogMessage: store.getBool(SETTINGS_KEYS.prettifyLogMessage, false),
    dedupStrategy: LogsDedupStrategy.none,
    hiddenLogLevels: [],
    logsSortOrder: store.get(SETTINGS_KEYS.logsSortOrder) || LogsSortOrder.Descending,
    isFlipping: false,
    displayedFields: [],
    forceEscape: false,
    contextOpen: false,
    contextRow: undefined,
    tableFrame: undefined,
    visualisationType: this.props.panelState?.logs?.visualisationType ?? 'logs',
    logsContainer: undefined,
  };

  constructor(props: Props) {
    super(props);
    this.logsVolumeEventBus = props.eventBus.newScopedBus('logsvolume', { onlyLocal: false });
  }

  componentWillUnmount() {
    if (this.flipOrderTimer) {
      window.clearTimeout(this.flipOrderTimer);
    }

    if (this.cancelFlippingTimer) {
      window.clearTimeout(this.cancelFlippingTimer);
    }
  }

  updatePanelState = (logsPanelState: Partial<ExploreLogsPanelState>) => {
    const state: ExploreItemState | undefined = getState().explore.panes[this.props.exploreId];
    if (state?.panelsState) {
      dispatch(
        changePanelState(this.props.exploreId, 'logs', {
          ...state.panelsState.logs,
          columns: logsPanelState.columns ?? this.props.panelState?.logs?.columns,
          visualisationType: logsPanelState.visualisationType ?? this.state.visualisationType,
          refId: logsPanelState.refId ?? this.props.panelState?.logs?.refId,
        })
      );
    }
  };

  componentDidUpdate(prevProps: Readonly<Props>): void {
    if (this.props.loading && !prevProps.loading && this.props.panelState?.logs?.id) {
      // loading stopped, so we need to remove any permalinked log lines
      delete this.props.panelState.logs.id;
      dispatch(
        changePanelState(this.props.exploreId, 'logs', {
          ...this.props.panelState,
        })
      );
    }
    if (this.props.panelState?.logs?.visualisationType !== prevProps.panelState?.logs?.visualisationType) {
      this.setState({
        visualisationType: this.props.panelState?.logs?.visualisationType ?? 'logs',
      });
    }
  }

  onLogRowHover = (row?: LogRowModel) => {
    if (!row) {
      this.props.eventBus.publish(new DataHoverClearEvent());
    } else {
      this.props.eventBus.publish(
        new DataHoverEvent({
          point: {
            time: row.timeEpochMs,
          },
        })
      );
    }
  };

  onLogsContainerRef = (node: HTMLDivElement) => {
    this.setState({ logsContainer: node });
  };

  onChangeLogsSortOrder = () => {
    this.setState({ isFlipping: true });
    // we are using setTimeout here to make sure that disabled button is rendered before the rendering of reordered logs
    this.flipOrderTimer = window.setTimeout(() => {
      this.setState((prevState) => {
        const newSortOrder =
          prevState.logsSortOrder === LogsSortOrder.Descending ? LogsSortOrder.Ascending : LogsSortOrder.Descending;
        store.set(SETTINGS_KEYS.logsSortOrder, newSortOrder);
        return { logsSortOrder: newSortOrder };
      });
    }, 0);
    this.cancelFlippingTimer = window.setTimeout(() => this.setState({ isFlipping: false }), 1000);
  };

  onEscapeNewlines = () => {
    this.setState((prevState) => ({
      forceEscape: !prevState.forceEscape,
    }));
  };

  onChangeVisualisation = (visualisation: LogsVisualisationType) => {
    this.setState(() => ({
      visualisationType: visualisation,
    }));
    const payload = {
      ...this.props.panelState?.logs,
      visualisationType: visualisation,
    };
    this.updatePanelState(payload);

    reportInteraction('grafana_explore_logs_visualisation_changed', {
      newVisualizationType: visualisation,
    });
  };

  onChangeDedup = (dedupStrategy: LogsDedupStrategy) => {
    reportInteraction('grafana_explore_logs_deduplication_clicked', {
      deduplicationType: dedupStrategy,
      datasourceType: this.props.datasourceType,
    });
    this.setState({ dedupStrategy });
  };

  onChangeLabels = (event: React.ChangeEvent<HTMLInputElement>) => {
    const { target } = event;
    if (target) {
      const showLabels = target.checked;
      this.setState({
        showLabels,
      });
      store.set(SETTINGS_KEYS.showLabels, showLabels);
    }
  };

  onChangeTime = (event: React.ChangeEvent<HTMLInputElement>) => {
    const { target } = event;
    if (target) {
      const showTime = target.checked;
      this.setState({
        showTime,
      });
      store.set(SETTINGS_KEYS.showTime, showTime);
    }
  };

  onChangeWrapLogMessage = (event: React.ChangeEvent<HTMLInputElement>) => {
    const { target } = event;
    if (target) {
      const wrapLogMessage = target.checked;
      this.setState({
        wrapLogMessage,
      });
      store.set(SETTINGS_KEYS.wrapLogMessage, wrapLogMessage);
    }
  };

  onChangePrettifyLogMessage = (event: React.ChangeEvent<HTMLInputElement>) => {
    const { target } = event;
    if (target) {
      const prettifyLogMessage = target.checked;
      this.setState({
        prettifyLogMessage,
      });
      store.set(SETTINGS_KEYS.prettifyLogMessage, prettifyLogMessage);
    }
  };

  onToggleLogLevel = (hiddenRawLevels: string[]) => {
    const hiddenLogLevels = hiddenRawLevels.map((level) => LogLevel[level as LogLevel]);
    this.setState({ hiddenLogLevels });
  };

  onToggleLogsVolumeCollapse = (collapsed: boolean) => {
    this.props.onSetLogsVolumeEnabled(!collapsed);
    reportInteraction('grafana_explore_logs_histogram_toggle_clicked', {
      datasourceType: this.props.datasourceType,
      type: !collapsed ? 'open' : 'close',
    });
  };

  onClickScan = (event: React.SyntheticEvent) => {
    event.preventDefault();
    if (this.props.onStartScanning) {
      this.props.onStartScanning();
      reportInteraction('grafana_explore_logs_scanning_button_clicked', {
        type: 'start',
        datasourceType: this.props.datasourceType,
      });
    }
  };

  onClickStopScan = (event: React.SyntheticEvent) => {
    event.preventDefault();
    if (this.props.onStopScanning) {
      this.props.onStopScanning();
    }
  };

  showField = (key: string) => {
    const index = this.state.displayedFields.indexOf(key);

    if (index === -1) {
      this.setState((state) => {
        return {
          displayedFields: state.displayedFields.concat(key),
        };
      });
    }
  };

  hideField = (key: string) => {
    const index = this.state.displayedFields.indexOf(key);
    if (index > -1) {
      this.setState((state) => {
        return {
          displayedFields: state.displayedFields.filter((k) => key !== k),
        };
      });
    }
  };

  clearDetectedFields = () => {
    this.setState((state) => {
      return {
        displayedFields: [],
      };
    });
  };

  onCloseContext = () => {
    this.setState({
      contextOpen: false,
      contextRow: undefined,
    });
  };

  onOpenContext = (row: LogRowModel, onClose: () => void) => {
    // we are setting the `contextOpen` open state and passing it down to the `LogRow` in order to highlight the row when a LogContext is open
    this.setState({
      contextOpen: true,
      contextRow: row,
    });
    reportInteraction('grafana_explore_logs_log_context_opened', {
      datasourceType: row.datasourceType,
      logRowUid: row.uid,
    });
    this.onCloseContext = () => {
      this.setState({
        contextOpen: false,
        contextRow: undefined,
      });
      reportInteraction('grafana_explore_logs_log_context_closed', {
        datasourceType: row.datasourceType,
        logRowUid: row.uid,
      });
      onClose();
    };
  };

  onPermalinkClick = async (row: LogRowModel) => {
    // this is an extra check, to be sure that we are not
    // creating permalinks for logs without an id-field.
    // normally it should never happen, because we do not
    // display the permalink button in such cases.
    if (row.rowId === undefined) {
      return;
    }

    // get explore state, add log-row-id and make timerange absolute
    const urlState = getUrlStateFromPaneState(getState().explore.panes[this.props.exploreId]!);
    urlState.panelsState = {
      ...this.props.panelState,
      logs: { id: row.uid, visualisationType: this.state.visualisationType ?? 'logs' },
    };
    urlState.range = {
      from: new Date(this.props.absoluteRange.from).toISOString(),
      to: new Date(this.props.absoluteRange.to).toISOString(),
    };

    // append changed urlState to baseUrl
    const serializedState = serializeStateToUrlParam(urlState);
    const baseUrl = /.*(?=\/explore)/.exec(`${window.location.href}`)![0];
    const url = urlUtil.renderUrl(`${baseUrl}/explore`, { left: serializedState });
    await createAndCopyShortLink(url);

    reportInteraction('grafana_explore_logs_permalink_clicked', {
      datasourceType: row.datasourceType ?? 'unknown',
      logRowUid: row.uid,
      logRowLevel: row.logLevel,
    });
  };

  scrollIntoView = (element: HTMLElement) => {
    if (config.featureToggles.exploreScrollableLogsContainer) {
      if (this.state.logsContainer) {
        this.topLogsRef.current?.scrollIntoView();
        this.state.logsContainer.scroll({
          behavior: 'smooth',
          top: this.state.logsContainer.scrollTop + element.getBoundingClientRect().top - window.innerHeight / 2,
        });
      }

      return;
    }
    const { scrollElement } = this.props;

    if (scrollElement) {
      scrollElement.scroll({
        behavior: 'smooth',
        top: scrollElement.scrollTop + element.getBoundingClientRect().top - window.innerHeight / 2,
      });
    }
  };

  checkUnescapedContent = memoizeOne((logRows: LogRowModel[]) => {
    return !!logRows.some((r) => r.hasUnescapedContent);
  });

  dedupRows = memoizeOne((logRows: LogRowModel[], dedupStrategy: LogsDedupStrategy) => {
    const dedupedRows = dedupLogRows(logRows, dedupStrategy);
    const dedupCount = dedupedRows.reduce((sum, row) => (row.duplicates ? sum + row.duplicates : sum), 0);
    return { dedupedRows, dedupCount };
  });

  filterRows = memoizeOne((logRows: LogRowModel[], hiddenLogLevels: LogLevel[]) => {
    return filterLogLevels(logRows, new Set(hiddenLogLevels));
  });

  createNavigationRange = memoizeOne((logRows: LogRowModel[]): { from: number; to: number } | undefined => {
    if (!logRows || logRows.length === 0) {
      return undefined;
    }
    const firstTimeStamp = logRows[0].timeEpochMs;
    const lastTimeStamp = logRows[logRows.length - 1].timeEpochMs;

    if (lastTimeStamp < firstTimeStamp) {
      return { from: lastTimeStamp, to: firstTimeStamp };
    }

    return { from: firstTimeStamp, to: lastTimeStamp };
  });

  scrollToTopLogs = () => {
    if (config.featureToggles.exploreScrollableLogsContainer) {
      if (this.state.logsContainer) {
        this.state.logsContainer.scroll({
          behavior: 'auto',
          top: 0,
        });
      }
    } else {
      this.topLogsRef.current?.scrollIntoView();
    }
  };

  render() {
    const {
      width,
      splitOpen,
      logRows,
      logsMeta,
      logsVolumeEnabled,
      logsVolumeData,
      loadLogsVolumeData,
      loading = false,
      onClickFilterLabel,
      onClickFilterOutLabel,
      timeZone,
      scanning,
      scanRange,
      showContextToggle,
      absoluteRange,
      onChangeTime,
      getFieldLinks,
      theme,
      logsQueries,
      clearCache,
      addResultsToCache,
      exploreId,
      getRowContext,
      getLogRowContextUi,
      getRowContextQuery,
    } = this.props;

    const {
      showLabels,
      showTime,
      wrapLogMessage,
      prettifyLogMessage,
      dedupStrategy,
      hiddenLogLevels,
      logsSortOrder,
      isFlipping,
      displayedFields,
      forceEscape,
      contextOpen,
      contextRow,
    } = this.state;

    const tableHeight = getLogsTableHeight();
    const styles = getStyles(theme, wrapLogMessage, tableHeight);
    const hasData = logRows && logRows.length > 0;
    const hasUnescapedContent = this.checkUnescapedContent(logRows);

    const filteredLogs = this.filterRows(logRows, hiddenLogLevels);
    const { dedupedRows, dedupCount } = this.dedupRows(filteredLogs, dedupStrategy);
    const navigationRange = this.createNavigationRange(logRows);

    const scanText = scanRange ? `Scanning ${rangeUtil.describeTimeRange(scanRange)}` : 'Scanning...';

    return (
      <>
        {getRowContext && contextRow && (
          <LogRowContextModal
            open={contextOpen}
            row={contextRow}
            onClose={this.onCloseContext}
            getRowContext={(row, options) => getRowContext(row, contextRow, options)}
            getRowContextQuery={getRowContextQuery}
            getLogRowContextUi={getLogRowContextUi}
            logsSortOrder={logsSortOrder}
            timeZone={timeZone}
          />
        )}
        <PanelChrome
          title="Logs volume"
          collapsible
          collapsed={!logsVolumeEnabled}
          onToggleCollapse={this.onToggleLogsVolumeCollapse}
        >
          {logsVolumeEnabled && (
            <LogsVolumePanelList
              absoluteRange={absoluteRange}
              width={width}
              logsVolumeData={logsVolumeData}
              onUpdateTimeRange={onChangeTime}
              timeZone={timeZone}
              splitOpen={splitOpen}
              onLoadLogsVolume={loadLogsVolumeData}
              onHiddenSeriesChanged={this.onToggleLogLevel}
              eventBus={this.logsVolumeEventBus}
              onClose={() => this.onToggleLogsVolumeCollapse(true)}
            />
          )}
        </PanelChrome>
        <PanelChrome
          titleItems={[
            config.featureToggles.logsExploreTableVisualisation ? (
              this.state.visualisationType === 'logs' ? null : (
                <PanelChrome.TitleItem title="Experimental" key="A">
                  <FeatureBadge
                    featureState={FeatureState.beta}
                    tooltip="This feature is experimental and may change in future versions"
                  />
                </PanelChrome.TitleItem>
              )
            ) : null,
          ]}
          title={
            config.featureToggles.logsExploreTableVisualisation
              ? this.state.visualisationType === 'logs'
                ? 'Logs'
                : 'Table'
              : 'Logs'
          }
          actions={
            <>
              {config.featureToggles.logsExploreTableVisualisation && (
                <div className={styles.visualisationType}>
                  <RadioButtonGroup
                    className={styles.visualisationTypeRadio}
                    options={[
                      {
                        label: 'Table',
                        value: 'table',
                        description: 'Show results in table visualisation',
                      },
                      {
                        label: 'Logs',
                        value: 'logs',
                        description: 'Show results in logs visualisation',
                      },
                    ]}
                    size="sm"
                    value={this.state.visualisationType}
                    onChange={this.onChangeVisualisation}
                  />
                </div>
              )}
            </>
          }
          loadingState={loading ? LoadingState.Loading : LoadingState.Done}
        >
          <div className={styles.stickyNavigation}>
            {this.state.visualisationType !== 'table' && (
              <div className={styles.logOptions}>
                <InlineFieldRow>
                  <InlineField label="Time" className={styles.horizontalInlineLabel} transparent>
                    <InlineSwitch
                      value={showTime}
                      onChange={this.onChangeTime}
                      className={styles.horizontalInlineSwitch}
                      transparent
                      id={`show-time_${exploreId}`}
                    />
                  </InlineField>
                  <InlineField label="Unique labels" className={styles.horizontalInlineLabel} transparent>
                    <InlineSwitch
                      value={showLabels}
                      onChange={this.onChangeLabels}
                      className={styles.horizontalInlineSwitch}
                      transparent
                      id={`unique-labels_${exploreId}`}
                    />
                  </InlineField>
                  <InlineField label="Wrap lines" className={styles.horizontalInlineLabel} transparent>
                    <InlineSwitch
                      value={wrapLogMessage}
                      onChange={this.onChangeWrapLogMessage}
                      className={styles.horizontalInlineSwitch}
                      transparent
                      id={`wrap-lines_${exploreId}`}
                    />
                  </InlineField>
                  <InlineField label="Prettify JSON" className={styles.horizontalInlineLabel} transparent>
                    <InlineSwitch
                      value={prettifyLogMessage}
                      onChange={this.onChangePrettifyLogMessage}
                      className={styles.horizontalInlineSwitch}
                      transparent
                      id={`prettify_${exploreId}`}
                    />
                  </InlineField>
                  <InlineField label="Deduplication" className={styles.horizontalInlineLabel} transparent>
                    <RadioButtonGroup
                      options={DEDUP_OPTIONS.map((dedupType) => ({
                        label: capitalize(dedupType),
                        value: dedupType,
                        description: LogsDedupDescription[dedupType],
                      }))}
                      value={dedupStrategy}
                      onChange={this.onChangeDedup}
                      className={styles.radioButtons}
                    />
                  </InlineField>
                </InlineFieldRow>

                <div>
                  <InlineField label="Display results" className={styles.horizontalInlineLabel} transparent>
                    <RadioButtonGroup
                      disabled={isFlipping}
                      options={[
                        {
                          label: 'Newest first',
                          value: LogsSortOrder.Descending,
                          description: 'Show results newest to oldest',
                        },
                        {
                          label: 'Oldest first',
                          value: LogsSortOrder.Ascending,
                          description: 'Show results oldest to newest',
                        },
                      ]}
                      value={logsSortOrder}
                      onChange={this.onChangeLogsSortOrder}
                      className={styles.radioButtons}
                    />
                  </InlineField>
                </div>
              </div>
            )}
            <div ref={this.topLogsRef} />
            <LogsMetaRow
              logRows={logRows}
              meta={logsMeta || []}
              dedupStrategy={dedupStrategy}
              dedupCount={dedupCount}
              hasUnescapedContent={hasUnescapedContent}
              forceEscape={forceEscape}
              displayedFields={displayedFields}
              onEscapeNewlines={this.onEscapeNewlines}
              clearDetectedFields={this.clearDetectedFields}
            />
          </div>
          <div
            className={cx(styles.logsSection, this.state.visualisationType === 'table' ? styles.logsTable : undefined)}
          >
            {this.state.visualisationType === 'table' && hasData && (
              <div className={styles.logRows} data-testid="logRowsTable">
                {/* Width should be full width minus logs navigation and padding */}
                <LogsTableWrap
                  logsSortOrder={this.state.logsSortOrder}
                  range={this.props.range}
                  splitOpen={this.props.splitOpen}
                  timeZone={timeZone}
                  width={width - 80}
                  logsFrames={this.props.logsFrames ?? []}
                  onClickFilterLabel={onClickFilterLabel}
                  onClickFilterOutLabel={onClickFilterOutLabel}
                  panelState={this.props.panelState?.logs}
                  theme={theme}
                  updatePanelState={this.updatePanelState}
                />
              </div>
            )}
            {this.state.visualisationType === 'logs' && hasData && (
              <div className={styles.logRows} data-testid="logRows" ref={this.onLogsContainerRef}>
                <LogRows
                  logRows={logRows}
                  deduplicatedRows={dedupedRows}
                  dedupStrategy={dedupStrategy}
                  onClickFilterLabel={onClickFilterLabel}
                  onClickFilterOutLabel={onClickFilterOutLabel}
                  showContextToggle={showContextToggle}
                  showLabels={showLabels}
                  showTime={showTime}
                  enableLogDetails={true}
                  forceEscape={forceEscape}
                  wrapLogMessage={wrapLogMessage}
                  prettifyLogMessage={prettifyLogMessage}
                  timeZone={timeZone}
                  getFieldLinks={getFieldLinks}
                  logsSortOrder={logsSortOrder}
                  displayedFields={displayedFields}
                  onClickShowField={this.showField}
                  onClickHideField={this.hideField}
                  app={CoreApp.Explore}
                  onLogRowHover={this.onLogRowHover}
                  onOpenContext={this.onOpenContext}
                  onPermalinkClick={this.onPermalinkClick}
                  permalinkedRowId={this.props.panelState?.logs?.id}
                  scrollIntoView={this.scrollIntoView}
                  isFilterLabelActive={this.props.isFilterLabelActive}
                  containerRendered={!!this.state.logsContainer}
                  onClickFilterValue={this.props.onClickFilterValue}
                  onClickFilterOutValue={this.props.onClickFilterOutValue}
                />
              </div>
            )}
            {!loading && !hasData && !scanning && (
              <div className={styles.logRows}>
                <div className={styles.noData}>
                  No logs found.
                  <Button size="sm" variant="secondary" onClick={this.onClickScan}>
                    Scan for older logs
                  </Button>
                </div>
              </div>
            )}
            {scanning && (
              <div className={styles.logRows}>
                <div className={styles.noData}>
                  <span>{scanText}</span>
                  <Button size="sm" variant="secondary" onClick={this.onClickStopScan}>
                    Stop scan
                  </Button>
                </div>
              </div>
            )}
            <LogsNavigation
              logsSortOrder={logsSortOrder}
              visibleRange={navigationRange ?? absoluteRange}
              absoluteRange={absoluteRange}
              timeZone={timeZone}
              onChangeTime={onChangeTime}
              loading={loading}
              queries={logsQueries ?? []}
              scrollToTopLogs={this.scrollToTopLogs}
              addResultsToCache={addResultsToCache}
              clearCache={clearCache}
            />
          </div>
        </PanelChrome>
      </>
    );
  }
}

export const Logs = withTheme2(UnthemedLogs);

const getStyles = (theme: GrafanaTheme2, wrapLogMessage: boolean, tableHeight: number) => {
  return {
    noData: css`
      > * {
        margin-left: 0.5em;
      }
    `,
    logOptions: css`
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      flex-wrap: wrap;
      background-color: ${theme.colors.background.primary};
      padding: ${theme.spacing(1, 2)};
      border-radius: ${theme.shape.radius.default};
      margin: ${theme.spacing(0, 0, 1)};
      border: 1px solid ${theme.colors.border.medium};
    `,
    headerButton: css`
      margin: ${theme.spacing(0.5, 0, 0, 1)};
    `,
    horizontalInlineLabel: css`
      > label {
        margin-right: 0;
      }
    `,
    horizontalInlineSwitch: css`
      padding: 0 ${theme.spacing(1)} 0 0;
    `,
    radioButtons: css`
      margin: 0;
    `,
    logsSection: css`
      display: flex;
      flex-direction: row;
      justify-content: space-between;
    `,
    logsTable: css({
      maxHeight: `${tableHeight}px`,
    }),
    logRows: css`
      overflow-x: ${scrollableLogsContainer ? 'scroll;' : `${wrapLogMessage ? 'unset' : 'scroll'};`}
      overflow-y: visible;
      width: 100%;
      ${scrollableLogsContainer && 'max-height: calc(100vh - 170px);'}
    `,
    visualisationType: css`
      display: flex;
      flex: 1;
      justify-content: space-between;
    `,
    visualisationTypeRadio: css`
      margin: 0 0 0 ${theme.spacing(1)};
    `,
    stickyNavigation: css`
      ${scrollableLogsContainer && 'margin-bottom: 0px'}
      overflow: visible;
    `,
  };
};