import {Fragment} from 'react';
import styled from '@emotion/styled';

import {BarChart, BarChartSeries} from 'sentry/components/charts/barChart';
import {DateTimeObject} from 'sentry/components/charts/utils';
import CollapsePanel, {COLLAPSE_COUNT} from 'sentry/components/collapsePanel';
import LoadingError from 'sentry/components/loadingError';
import {normalizeDateTimeParams} from 'sentry/components/organizations/pageFilters/parse';
import PanelTable from 'sentry/components/panels/panelTable';
import Placeholder from 'sentry/components/placeholder';
import {IconArrow} from 'sentry/icons';
import {t} from 'sentry/locale';
import ProjectsStore from 'sentry/stores/projectsStore';
import {space} from 'sentry/styles/space';
import type {Organization, Project} from 'sentry/types';
import {useApiQuery} from 'sentry/utils/queryClient';

import {ProjectBadge, ProjectBadgeContainer} from './styles';
import {barAxisLabel, convertDayValueObjectToSeries, sortSeriesByDay} from './utils';

interface StatusCounts {
  total: number;
  archived?: number;
  deleted?: number;
  ignored?: number;
  new?: number;
  regressed?: number;
  resolved?: number;
  unarchived?: number;
  unignored?: number;
}

export type IssuesBreakdown = Record<string, Record<string, StatusCounts>>;

type Statuses = keyof Omit<StatusCounts, 'total'>;

interface TeamIssuesBreakdownProps extends DateTimeObject {
  organization: Organization;
  projects: Project[];
  statuses: Statuses[];
  teamSlug: string;
  environment?: string;
}

const keys = ['deleted', 'ignored', 'resolved', 'unignored', 'regressed', 'new', 'total'];

function TeamIssuesBreakdown({
  organization,
  projects,
  start,
  end,
  period,
  utc,
  teamSlug,
  statuses,
  environment,
}: TeamIssuesBreakdownProps) {
  const {
    data: issuesBreakdown = {},
    isLoading,
    isError,
    refetch,
  } = useApiQuery<IssuesBreakdown>(
    [
      `/teams/${organization.slug}/${teamSlug}/issue-breakdown/`,
      {
        query: {
          ...normalizeDateTimeParams({start, end, period, utc}),
          statuses,
          environment,
        },
      },
    ],
    {staleTime: 5000}
  );

  const hasEscalatingIssues = organization.features.includes('escalating-issues');

  const allReviewedByDay: Record<string, Record<string, number>> = {};
  // Total statuses & total reviewed keyed by project ID
  const projectTotals: Record<string, StatusCounts> = {};

  // The issues breakdown is keyed by projectId
  for (const [projectId, entries] of Object.entries(issuesBreakdown)) {
    // Each bucket is 1 day
    for (const [bucket, counts] of Object.entries(entries)) {
      if (!projectTotals[projectId]) {
        projectTotals[projectId] = {
          deleted: 0,
          ignored: 0,
          resolved: 0,
          unignored: 0,
          regressed: 0,
          new: 0,
          total: 0,
        };
      }

      for (const key of keys) {
        projectTotals[projectId][key] += counts[key];
      }

      if (!allReviewedByDay[projectId]) {
        allReviewedByDay[projectId] = {};
      }

      if (allReviewedByDay[projectId][bucket] === undefined) {
        allReviewedByDay[projectId][bucket] = counts.total;
      } else {
        allReviewedByDay[projectId][bucket] += counts.total;
      }
    }
  }

  const sortedProjectIds = Object.entries(projectTotals)
    .map(([projectId, {total}]) => ({projectId, total}))
    .sort((a, b) => b.total - a.total);

  const allSeries = Object.keys(allReviewedByDay).map(
    (projectId, idx): BarChartSeries => ({
      seriesName: ProjectsStore.getById(projectId)?.slug ?? projectId,
      data: sortSeriesByDay(convertDayValueObjectToSeries(allReviewedByDay[projectId])),
      animationDuration: 500,
      animationDelay: idx * 500,
      silent: true,
      barCategoryGap: '5%',
    })
  );

  if (isError) {
    return <LoadingError onRetry={refetch} />;
  }

  return (
    <Fragment>
      <IssuesChartWrapper>
        {isLoading && <Placeholder height="200px" />}
        {!isLoading && (
          <BarChart
            style={{height: 200}}
            stacked
            isGroupedByDate
            useShortDate
            legend={{right: 0, top: 0}}
            xAxis={barAxisLabel()}
            yAxis={{minInterval: 1}}
            series={allSeries}
          />
        )}
      </IssuesChartWrapper>
      <CollapsePanel items={sortedProjectIds.length}>
        {({isExpanded, showMoreButton}) => (
          <Fragment>
            <StyledPanelTable
              numActions={statuses.length}
              headers={[
                t('Project'),
                ...statuses
                  .map(action =>
                    hasEscalatingIssues ? action.replace('ignore', 'archive') : action
                  )
                  .map(action => <AlignRight key={action}>{action}</AlignRight>),
                <AlignRight key="total">
                  {t('total')} <IconArrow direction="down" size="xs" color="gray300" />
                </AlignRight>,
              ]}
              isLoading={isLoading}
            >
              {sortedProjectIds.map(({projectId}, idx) => {
                const project = projects.find(p => p.id === projectId);

                if (idx >= COLLAPSE_COUNT && !isExpanded) {
                  return null;
                }

                return (
                  <Fragment key={projectId}>
                    <ProjectBadgeContainer>
                      {project && <ProjectBadge avatarSize={18} project={project} />}
                    </ProjectBadgeContainer>
                    {statuses.map(action => (
                      <AlignRight key={action}>
                        {projectTotals[projectId][action]}
                      </AlignRight>
                    ))}
                    <AlignRight>{projectTotals[projectId].total}</AlignRight>
                  </Fragment>
                );
              })}
            </StyledPanelTable>
            {!isLoading && showMoreButton}
          </Fragment>
        )}
      </CollapsePanel>
    </Fragment>
  );
}

export default TeamIssuesBreakdown;

const ChartWrapper = styled('div')`
  padding: ${space(2)} ${space(2)} 0 ${space(2)};
`;

const IssuesChartWrapper = styled(ChartWrapper)`
  border-bottom: 1px solid ${p => p.theme.border};
`;

const StyledPanelTable = styled(PanelTable)<{numActions: number}>`
  grid-template-columns: 1fr ${p => ' 0.2fr'.repeat(p.numActions)} 0.2fr;
  font-size: ${p => p.theme.fontSizeMedium};
  white-space: nowrap;
  margin-bottom: 0;
  border: 0;
  box-shadow: unset;

  & > div {
    padding: ${space(1)} ${space(2)};
  }
`;

const AlignRight = styled('div')`
  text-align: right;
  font-variant-numeric: tabular-nums;
`;