import {Fragment, useCallback, useMemo, useState} from 'react';
import styled from '@emotion/styled';

import Feature from 'sentry/components/acl/feature';
import GuideAnchor from 'sentry/components/assistant/guideAnchor';
import {Button} from 'sentry/components/button';
import HookOrDefault from 'sentry/components/hookOrDefault';
import {
  type Field,
  MetricSamplesTable,
  SearchableMetricSamplesTable,
} from 'sentry/components/metrics/metricSamplesTable';
import {normalizeDateTimeParams} from 'sentry/components/organizations/pageFilters/parse';
import {TabList, TabPanels, Tabs} from 'sentry/components/tabs';
import {Tooltip} from 'sentry/components/tooltip';
import {t} from 'sentry/locale';
import {space} from 'sentry/styles/space';
import type {PageFilters} from 'sentry/types/core';
import type {MRI} from 'sentry/types/metrics';
import {defined} from 'sentry/utils';
import {trackAnalytics} from 'sentry/utils/analytics';
import {isCustomMetric} from 'sentry/utils/metrics';
import type {FocusedMetricsSeries, MetricsWidget} from 'sentry/utils/metrics/types';
import {isMetricsEquationWidget} from 'sentry/utils/metrics/types';
import type {MetricsSamplesResults} from 'sentry/utils/metrics/useMetricsSamples';
import useOrganization from 'sentry/utils/useOrganization';
import usePageFilters from 'sentry/utils/usePageFilters';
import {CodeLocations} from 'sentry/views/metrics/codeLocations';
import type {FocusAreaProps} from 'sentry/views/metrics/context';
import {useMetricsContext} from 'sentry/views/metrics/context';
import {extendQueryWithGroupBys} from 'sentry/views/metrics/utils';
import {generateTracesRouteWithQuery} from 'sentry/views/performance/traces/utils';

enum Tab {
  SAMPLES = 'samples',
  CODE_LOCATIONS = 'codeLocations',
}

export function WidgetDetails() {
  const {
    selectedWidgetIndex,
    widgets,
    focusArea,
    setHighlightedSampleId,
    setMetricsSamples,
  } = useMetricsContext();

  const selectedWidget = widgets[selectedWidgetIndex] as MetricsWidget | undefined;

  const handleSampleRowHover = useCallback(
    (sampleId?: string) => {
      setHighlightedSampleId(sampleId);
    },
    [setHighlightedSampleId]
  );

  if (!selectedWidget || isMetricsEquationWidget(selectedWidget)) {
    return <MetricDetails onRowHover={handleSampleRowHover} focusArea={focusArea} />;
  }

  const {mri, op, query, focusedSeries} = selectedWidget;

  return (
    <MetricDetails
      mri={mri}
      op={op}
      query={query}
      focusedSeries={focusedSeries}
      onRowHover={handleSampleRowHover}
      setMetricsSamples={setMetricsSamples}
      focusArea={focusArea}
    />
  );
}

interface MetricDetailsProps {
  focusArea?: FocusAreaProps;
  focusedSeries?: FocusedMetricsSeries[];
  mri?: MRI;
  onRowHover?: (sampleId?: string) => void;
  op?: string;
  query?: string;
  setMetricsSamples?: React.Dispatch<
    React.SetStateAction<MetricsSamplesResults<Field>['data'] | undefined>
  >;
}

export function MetricDetails({
  mri,
  op,
  query,
  focusedSeries,
  onRowHover,
  focusArea,
  setMetricsSamples,
}: MetricDetailsProps) {
  const {selection} = usePageFilters();
  const organization = useOrganization();

  const [selectedTab, setSelectedTab] = useState(Tab.SAMPLES);

  const isCodeLocationsDisabled = mri && !isCustomMetric({mri});

  if (isCodeLocationsDisabled && selectedTab === Tab.CODE_LOCATIONS) {
    setSelectedTab(Tab.SAMPLES);
  }

  const queryWithFocusedSeries = useMemo(
    () =>
      focusedSeries &&
      extendQueryWithGroupBys(
        query || '',
        focusedSeries.map(s => s.groupBy)
      ),
    [focusedSeries, query]
  );

  const handleTabChange = useCallback(
    (tab: Tab) => {
      if (tab === Tab.CODE_LOCATIONS) {
        trackAnalytics('ddm.code-locations', {
          organization,
        });
      }
      setSelectedTab(tab);
    },
    [organization]
  );

  const selectionRange = focusArea?.selection?.range;
  const selectionDatetime =
    defined(selectionRange) && defined(selectionRange) && defined(selectionRange)
      ? ({
          start: selectionRange.start,
          end: selectionRange.end,
        } as PageFilters['datetime'])
      : undefined;

  const tracesTarget = generateTracesRouteWithQuery({
    orgSlug: organization.slug,
    metric:
      op && mri
        ? {
            max: selectionRange?.max,
            min: selectionRange?.min,
            op: op,
            query: queryWithFocusedSeries,
            mri,
          }
        : undefined,
    query: {
      project: selection.projects as unknown as string[],
      environment: selection.environments,
      ...normalizeDateTimeParams(selectionDatetime ?? selection.datetime),
    },
  });

  return (
    <TrayWrapper>
      <Tabs value={selectedTab} onChange={handleTabChange}>
        <TabsAndAction>
          <TabList>
            <TabList.Item key={Tab.SAMPLES}>
              <GuideAnchor target="metrics_table" position="top">
                {t('Span Samples')}
              </GuideAnchor>
            </TabList.Item>
            <TabList.Item
              textValue={t('Code Location')}
              key={Tab.CODE_LOCATIONS}
              disabled={isCodeLocationsDisabled}
            >
              <Tooltip
                title={t(
                  'This metric is automatically collected by Sentry. It is not bound to a specific line of your code.'
                )}
                disabled={!isCodeLocationsDisabled}
              >
                <span style={{pointerEvents: 'all'}}>{t('Code Location')}</span>
              </Tooltip>
            </TabList.Item>
          </TabList>
          <Feature
            features={[
              'performance-trace-explorer-with-metrics',
              'performance-trace-explorer',
            ]}
            requireAll
          >
            <OpenInTracesButton to={tracesTarget} size="sm">
              {t('Open in Traces')}
            </OpenInTracesButton>
          </Feature>
        </TabsAndAction>
        <ContentWrapper>
          <TabPanels>
            <TabPanels.Item key={Tab.SAMPLES}>
              <MetricSampleTableWrapper organization={organization}>
                {organization.features.includes('metrics-samples-list-search') ? (
                  <SearchableMetricSamplesTable
                    focusArea={selectionRange}
                    mri={mri}
                    onRowHover={onRowHover}
                    op={op}
                    query={queryWithFocusedSeries}
                    setMetricsSamples={setMetricsSamples}
                  />
                ) : (
                  <MetricSamplesTable
                    focusArea={selectionRange}
                    mri={mri}
                    onRowHover={onRowHover}
                    op={op}
                    query={queryWithFocusedSeries}
                    setMetricsSamples={setMetricsSamples}
                  />
                )}
              </MetricSampleTableWrapper>
            </TabPanels.Item>
            <TabPanels.Item key={Tab.CODE_LOCATIONS}>
              <CodeLocations mri={mri} {...focusArea?.selection?.range} />
            </TabPanels.Item>
          </TabPanels>
        </ContentWrapper>
      </Tabs>
    </TrayWrapper>
  );
}

const MetricSampleTableWrapper = HookOrDefault({
  hookName: 'component:ddm-metrics-samples-list',
  defaultComponent: ({children}) => <Fragment>{children}</Fragment>,
});

const TrayWrapper = styled('div')`
  padding-top: ${space(4)};
  display: grid;
  grid-template-rows: auto auto 1fr;
`;

const ContentWrapper = styled('div')`
  position: relative;
  padding-top: ${space(2)};
`;

const OpenInTracesButton = styled(Button)`
  margin-top: ${space(0.75)};
`;

const TabsAndAction = styled('div')`
  display: grid;
  grid-template-columns: 1fr auto;
  gap: ${space(4)};
  align-items: center;
`;