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

import {type Field, MetricSamplesTable} from 'sentry/components/ddm/metricSamplesTable';
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 {MRI} from 'sentry/types';
import {trackAnalytics} from 'sentry/utils/analytics';
import {isCustomMetric} from 'sentry/utils/metrics';
import type {
  FocusedMetricsSeries,
  MetricQueryWidgetParams,
  MetricWidgetQueryParams,
} from 'sentry/utils/metrics/types';
import {MetricQueryType} from 'sentry/utils/metrics/types';
import type {MetricsSamplesResults} from 'sentry/utils/metrics/useMetricsSamples';
import useOrganization from 'sentry/utils/useOrganization';
import {CodeLocations} from 'sentry/views/ddm/codeLocations';
import type {FocusAreaProps} from 'sentry/views/ddm/context';
import {useDDMContext} from 'sentry/views/ddm/context';
import type {SamplesTableProps} from 'sentry/views/ddm/sampleTable';
import {SampleTable} from 'sentry/views/ddm/sampleTable';
import {getQueryWithFocusedSeries} from 'sentry/views/ddm/utils';

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

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

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

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

  // TODO(aknaus): better fallback
  if (selectedWidget?.type === MetricQueryType.FORMULA) {
    <MetricDetails onRowHover={handleSampleRowHover} focusArea={focusArea} />;
  }

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

  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?: SamplesTableProps['onRowHover'];
  op?: string;
  query?: string;
  setMetricsSamples?: React.Dispatch<
    React.SetStateAction<MetricsSamplesResults<Field>['data'] | undefined>
  >;
}

// TODO: add types
export function MetricDetails({
  mri,
  op,
  query,
  focusedSeries,
  onRowHover,
  focusArea,
  setMetricsSamples,
}: MetricDetailsProps) {
  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 && getQueryWithFocusedSeries(query || '', focusedSeries),
    [focusedSeries, query]
  );

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

  return (
    <TrayWrapper>
      <Tabs value={selectedTab} onChange={handleTabChange}>
        <TabList>
          <TabList.Item key={Tab.SAMPLES}>{t('Sampled Events')}</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>
        <ContentWrapper>
          <TabPanels>
            <TabPanels.Item key={Tab.SAMPLES}>
              {organization.features.includes('metrics-samples-list') ? (
                <MetricSamplesTable
                  focusArea={focusArea?.selection?.range}
                  mri={mri}
                  onRowHover={onRowHover}
                  op={op}
                  query={queryWithFocusedSeries}
                  setMetricsSamples={setMetricsSamples}
                />
              ) : (
                <SampleTable
                  mri={mri}
                  {...focusArea?.selection?.range}
                  query={queryWithFocusedSeries}
                  onRowHover={onRowHover}
                />
              )}
            </TabPanels.Item>
            <TabPanels.Item key={Tab.CODE_LOCATIONS}>
              <CodeLocations mri={mri} {...focusArea?.selection?.range} />
            </TabPanels.Item>
          </TabPanels>
        </ContentWrapper>
      </Tabs>
    </TrayWrapper>
  );
}

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)};
`;