import {useCallback, useEffect, useMemo, useRef, useState} from 'react';
import styled from '@emotion/styled';
import * as Sentry from '@sentry/react';
import type {Location} from 'history';
import Cookies from 'js-cookie';
import isEqual from 'lodash/isEqual';
import mapValues from 'lodash/mapValues';
import omit from 'lodash/omit';
import pickBy from 'lodash/pickBy';
import moment from 'moment-timezone';
import * as qs from 'query-string';

import {addMessage} from 'sentry/actionCreators/indicator';
import {fetchOrgMembers, indexMembersByProject} from 'sentry/actionCreators/members';
import ErrorBoundary from 'sentry/components/errorBoundary';
import * as Layout from 'sentry/components/layouts/thirds';
import {extractSelectionParameters} from 'sentry/components/organizations/pageFilters/utils';
import type {CursorHandler} from 'sentry/components/pagination';
import QueryCount from 'sentry/components/queryCount';
import {DEFAULT_QUERY, DEFAULT_STATS_PERIOD} from 'sentry/constants';
import {t, tct} from 'sentry/locale';
import GroupStore from 'sentry/stores/groupStore';
import IssueListCacheStore from 'sentry/stores/IssueListCacheStore';
import SelectedGroupStore from 'sentry/stores/selectedGroupStore';
import {useLegacyStore} from 'sentry/stores/useLegacyStore';
import {space} from 'sentry/styles/space';
import type {PageFilters} from 'sentry/types/core';
import type {BaseGroup, Group, PriorityLevel, SavedSearch} from 'sentry/types/group';
import {GroupStatus, IssueCategory} from 'sentry/types/group';
import type {RouteComponentProps} from 'sentry/types/legacyReactRouter';
import {defined} from 'sentry/utils';
import {trackAnalytics} from 'sentry/utils/analytics';
import CursorPoller from 'sentry/utils/cursorPoller';
import {getUtcDateString} from 'sentry/utils/dates';
import getCurrentSentryReactRootSpan from 'sentry/utils/getCurrentSentryReactRootSpan';
import parseApiError from 'sentry/utils/parseApiError';
import parseLinkHeader from 'sentry/utils/parseLinkHeader';
import {makeIssuesINPObserver} from 'sentry/utils/performanceForSentry';
import {decodeScalar} from 'sentry/utils/queryString';
import useDisableRouteAnalytics from 'sentry/utils/routeAnalytics/useDisableRouteAnalytics';
import useRouteAnalyticsParams from 'sentry/utils/routeAnalytics/useRouteAnalyticsParams';
import normalizeUrl from 'sentry/utils/url/normalizeUrl';
import useApi from 'sentry/utils/useApi';
import {useLocation} from 'sentry/utils/useLocation';
import {useNavigate} from 'sentry/utils/useNavigate';
import useOrganization from 'sentry/utils/useOrganization';
import usePageFilters from 'sentry/utils/usePageFilters';
import {useParams} from 'sentry/utils/useParams';
import usePrevious from 'sentry/utils/usePrevious';
import IssueListTable from 'sentry/views/issueList/issueListTable';
import {IssuesDataConsentBanner} from 'sentry/views/issueList/issuesDataConsentBanner';
import IssueViewsIssueListHeader from 'sentry/views/issueList/issueViewsHeader';
import {useFetchSavedSearchesForOrg} from 'sentry/views/issueList/queries/useFetchSavedSearchesForOrg';
import SavedIssueSearches from 'sentry/views/issueList/savedIssueSearches';
import type {IssueUpdateData} from 'sentry/views/issueList/types';
import {NewTabContextProvider} from 'sentry/views/issueList/utils/newTabContext';
import {parseIssuePrioritySearch} from 'sentry/views/issueList/utils/parseIssuePrioritySearch';
import {useSelectedSavedSearch} from 'sentry/views/issueList/utils/useSelectedSavedSearch';

import IssueListFilters from './filters';
import IssueListHeader from './header';
import type {QueryCounts} from './utils';
import {
  DEFAULT_ISSUE_STREAM_SORT,
  FOR_REVIEW_QUERIES,
  getTabs,
  getTabsWithCounts,
  isForReviewQuery,
  IssueSortOptions,
  Query,
  TAB_MAX_COUNT,
} from './utils';

const MAX_ITEMS = 25;
// the default period for the graph in each issue row
const DEFAULT_GRAPH_STATS_PERIOD = '24h';
// the allowed period choices for graph in each issue row
const DYNAMIC_COUNTS_STATS_PERIODS = new Set(['14d', '24h', 'auto']);
const MAX_ISSUES_COUNT = 100;

type Props = RouteComponentProps<{}, {searchId?: string}>;

interface EndpointParams extends Partial<PageFilters['datetime']> {
  environment: string[];
  project: number[];
  cursor?: string;
  groupStatsPeriod?: string | null;
  page?: number | string;
  query?: string;
  sort?: string;
  statsPeriod?: string | null;
  useGroupSnubaDataset?: boolean;
}

type CountsEndpointParams = Omit<EndpointParams, 'cursor' | 'page' | 'query'> & {
  query: string[];
};

type StatEndpointParams = Omit<EndpointParams, 'cursor' | 'page'> & {
  groups: string[];
  expand?: string | string[];
};

function useIssuesINPObserver() {
  const _performanceObserver = useRef<PerformanceObserver | undefined>(undefined);

  useEffect(() => {
    _performanceObserver.current = makeIssuesINPObserver();

    return () => {
      if (_performanceObserver.current) {
        _performanceObserver.current.disconnect();
      }
    };
  }, []);
}

function useSavedSearches() {
  const organization = useOrganization();
  const {data: savedSearches = [], isPending} = useFetchSavedSearchesForOrg(
    {
      orgSlug: organization.slug,
    },
    {enabled: !organization.features.includes('issue-stream-custom-views')}
  );

  const params = useParams();
  const selectedSavedSearch = useSelectedSavedSearch();

  return {
    savedSearches,
    savedSearchLoading:
      !organization.features.includes('issue-stream-custom-views') && isPending,
    savedSearch: selectedSavedSearch,
    selectedSearchId: params.searchId ?? null,
  };
}

const parsePageQueryParam = (location: Location, defaultPage: number = 0) => {
  const page = location.query.page;
  const pageInt = Array.isArray(page)
    ? parseInt(page[0] ?? '', 10)
    : parseInt(page ?? '', 10);

  if (isNaN(pageInt)) {
    return defaultPage;
  }

  return pageInt;
};

function IssueListOverview({router}: Props) {
  const location = useLocation();
  const organization = useOrganization();
  const navigate = useNavigate();
  const {selection} = usePageFilters();
  const api = useApi();
  const realtimeActiveCookie = Cookies.get('realtimeActive');
  const [realtimeActive, setRealtimeActive] = useState(
    typeof realtimeActiveCookie === 'undefined' ? false : realtimeActiveCookie === 'true'
  );
  const [groupIds, setGroupIds] = useState<string[]>([]);
  const [pageLinks, setPageLinks] = useState('');
  const [queryCount, setQueryCount] = useState(0);
  const [queryCounts, setQueryCounts] = useState<QueryCounts>({});
  const [queryMaxCount, setQueryMaxCount] = useState(0);
  const [error, setError] = useState<string | null>(null);
  const [issuesLoading, setIssuesLoading] = useState(true);
  const [memberList, setMemberList] = useState<ReturnType<typeof indexMembersByProject>>(
    {}
  );
  const undoRef = useRef(false);
  const pollerRef = useRef<CursorPoller | undefined>(undefined);
  const actionTakenRef = useRef(false);

  const {savedSearch, savedSearchLoading, savedSearches, selectedSearchId} =
    useSavedSearches();

  const groups = useLegacyStore(GroupStore);
  useEffect(() => {
    const storeGroupIds = groups.map(group => group.id).slice(0, MAX_ISSUES_COUNT);
    if (!isEqual(groupIds, storeGroupIds)) {
      setGroupIds(storeGroupIds);
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [groups]);

  useIssuesINPObserver();

  const onRealtimePoll = useCallback(
    (data: any, {queryCount: newQueryCount}: {queryCount: number}) => {
      // Note: We do not update state with cursors from polling,
      // `CursorPoller` updates itself with new cursors
      GroupStore.addToFront(data);
      setQueryCount(newQueryCount);
    },
    []
  );

  useEffect(() => {
    pollerRef.current = new CursorPoller({
      linkPreviousHref: parseLinkHeader(pageLinks)?.previous?.href!,
      success: onRealtimePoll,
    });
  }, [onRealtimePoll, pageLinks]);

  const getQueryFromSavedSearchOrLocation = useCallback(
    (props: {location: Location; savedSearch: SavedSearch | null}): string => {
      if (
        !organization.features.includes('issue-stream-custom-views') &&
        props.savedSearch
      ) {
        return props.savedSearch.query;
      }

      const {query} = props.location.query;

      if (query !== undefined) {
        return decodeScalar(query, '');
      }

      return DEFAULT_QUERY;
    },
    [organization.features]
  );

  const getSortFromSavedSearchOrLocation = useCallback(
    (props: {location: Location; savedSearch: SavedSearch | null}): string => {
      if (!props.location.query.sort && props.savedSearch?.id) {
        return props.savedSearch.sort;
      }

      if (props.location.query.sort) {
        return props.location.query.sort as string;
      }
      return DEFAULT_ISSUE_STREAM_SORT;
    },
    []
  );

  const query = useMemo((): string => {
    return getQueryFromSavedSearchOrLocation({
      savedSearch,
      location,
    });
  }, [getQueryFromSavedSearchOrLocation, savedSearch, location]);

  const sort = useMemo((): string => {
    return getSortFromSavedSearchOrLocation({
      savedSearch,
      location,
    });
  }, [getSortFromSavedSearchOrLocation, savedSearch, location]);

  const getGroupStatsPeriod = useCallback((): string => {
    let currentPeriod: string;
    if (typeof location.query?.groupStatsPeriod === 'string') {
      currentPeriod = location.query.groupStatsPeriod;
    } else {
      currentPeriod = DEFAULT_GRAPH_STATS_PERIOD;
    }

    return DYNAMIC_COUNTS_STATS_PERIODS.has(currentPeriod)
      ? currentPeriod
      : DEFAULT_GRAPH_STATS_PERIOD;
  }, [location]);

  const getEndpointParams = useCallback((): EndpointParams => {
    const params: EndpointParams = {
      project: selection.projects,
      environment: selection.environments,
      query,
      ...selection.datetime,
    };

    if (selection.datetime.period) {
      delete params.period;
      params.statsPeriod = selection.datetime.period;
    }
    if (params.end) {
      params.end = getUtcDateString(params.end);
    }
    if (params.start) {
      params.start = getUtcDateString(params.start);
    }

    if (sort !== DEFAULT_ISSUE_STREAM_SORT) {
      params.sort = sort;
    }

    const groupStatsPeriod = getGroupStatsPeriod();
    if (groupStatsPeriod !== DEFAULT_GRAPH_STATS_PERIOD) {
      params.groupStatsPeriod = groupStatsPeriod;
    }

    if (location.query.useGroupSnubaDataset) {
      params.useGroupSnubaDataset = true;
    }

    // only include defined values.
    return pickBy(params, v => defined(v)) as EndpointParams;
  }, [selection, location, query, sort, getGroupStatsPeriod]);

  const requestParams = useMemo(() => {
    // Used for Issue Stream Performance project, enabled means we are doing saved search look up in the backend
    const savedSearchLookupEnabled = 0;
    const savedSearchLookupDisabled = 1;

    const params: any = {
      ...getEndpointParams(),
      limit: MAX_ITEMS,
      shortIdLookup: 1,
      savedSearch: savedSearchLoading
        ? savedSearchLookupEnabled
        : savedSearchLookupDisabled,
    };

    if (selectedSearchId) {
      params.searchId = selectedSearchId;
    }

    if (savedSearchLoading && !defined(location.query.query)) {
      delete params.query;
    }

    const currentQuery = location.query || {};
    if ('cursor' in currentQuery) {
      params.cursor = currentQuery.cursor;
    }

    // If no stats period values are set, use default
    if (!params.statsPeriod && !params.start) {
      params.statsPeriod = DEFAULT_STATS_PERIOD;
    }

    params.expand = ['owners', 'inbox'];
    params.collapse = ['stats', 'unhandled'];

    return params;
  }, [getEndpointParams, location.query, savedSearchLoading, selectedSearchId]);

  const loadFromCache = useCallback((): boolean => {
    const cache = IssueListCacheStore.getFromCache(requestParams);

    if (!cache) {
      return false;
    }

    setIssuesLoading(false);
    setQueryCount(cache.queryCount);
    setQueryMaxCount(cache.queryMaxCount);
    setPageLinks(cache.pageLinks);

    GroupStore.add(cache.groups);

    return true;
  }, [requestParams]);

  const resumePolling = useCallback(() => {
    if (!pageLinks) {
      return;
    }

    // Only resume polling if we're on the first page of results
    const links = parseLinkHeader(pageLinks);
    if (links && !links.previous!.results && realtimeActive) {
      pollerRef.current?.setEndpoint(links?.previous!.href);
      pollerRef.current?.enable();
    }
  }, [pageLinks, realtimeActive]);

  const trackTabViewed = useCallback(
    (newGroupIds: string[], data: Group[], numHits: number | null) => {
      const endpointParams = getEndpointParams();
      const tabQueriesWithCounts = getTabsWithCounts();
      const currentTabQuery = tabQueriesWithCounts.includes(endpointParams.query as Query)
        ? endpointParams.query
        : null;
      const tab = getTabs().find(([tabQuery]) => currentTabQuery === tabQuery)?.[1];

      const numPerfIssues = newGroupIds.filter(
        groupId => GroupStore.get(groupId)?.issueCategory === IssueCategory.PERFORMANCE
      ).length;
      // First and last seen are only available after the group has fetched stats
      // Number of issues shown whose first seen is more than 30 days ago
      const numOldIssues = data.filter((group: BaseGroup) =>
        moment(new Date(group.firstSeen)).isBefore(moment().subtract(30, 'd'))
      ).length;
      // number of issues shown whose first seen is less than 7 days
      const numNewIssues = data.filter((group: BaseGroup) =>
        moment(new Date(group.firstSeen)).isAfter(moment().subtract(7, 'd'))
      ).length;

      trackAnalytics('issues_tab.viewed', {
        organization,
        tab: tab?.analyticsName,
        page: parsePageQueryParam(location, 0),
        query,
        num_perf_issues: numPerfIssues,
        num_old_issues: numOldIssues,
        num_new_issues: numNewIssues,
        num_issues: data.length,
        total_issues_count: numHits,
        issue_views_enabled: organization.features.includes('issue-stream-custom-views'),
        sort,
      });
    },
    [organization, location, getEndpointParams, query, sort]
  );

  const fetchCounts = useCallback(
    (currentQueryCount: number, fetchAllCounts: boolean) => {
      let newQueryCounts: QueryCounts = {...queryCounts};

      const endpointParams = getEndpointParams();
      const tabQueriesWithCounts = getTabsWithCounts();
      const currentTabQuery = tabQueriesWithCounts.includes(endpointParams.query as Query)
        ? endpointParams.query
        : null;

      // Update the count based on the exact number of issues, these shown as is
      if (currentTabQuery) {
        // @ts-expect-error TS(7053): Element implicitly has an 'any' type because expre... Remove this comment to see the full error message
        newQueryCounts[currentTabQuery] = {
          count: currentQueryCount,
          hasMore: false,
        };
      }

      setQueryCounts(newQueryCounts);

      // If all tabs' counts are fetched, skip and only set
      if (
        fetchAllCounts ||
        // @ts-expect-error TS(7053): Element implicitly has an 'any' type because expre... Remove this comment to see the full error message
        !tabQueriesWithCounts.every(tabQuery => queryCounts[tabQuery] !== undefined)
      ) {
        const countsRequestParams: CountsEndpointParams = {
          ...omit(endpointParams, 'query'),
          // fetch the counts for the tabs whose counts haven't been fetched yet
          query: tabQueriesWithCounts.filter(_query => _query !== currentTabQuery),
        };

        // If no stats period values are set, use default
        if (!countsRequestParams.statsPeriod && !countsRequestParams.start) {
          countsRequestParams.statsPeriod = DEFAULT_STATS_PERIOD;
        }

        api.request(`/organizations/${organization.slug}/issues-count/`, {
          method: 'GET',
          data: qs.stringify(countsRequestParams),

          success: data => {
            if (!data) {
              return;
            }
            // Counts coming from the counts endpoint is limited to 100, for >= 100 we display 99+
            newQueryCounts = {
              ...queryCounts,
              ...mapValues(data, (count: number) => ({
                count,
                hasMore: count > TAB_MAX_COUNT,
              })),
            };
          },
          error: () => {
            setQueryCounts({});
          },
          complete: () => {
            setQueryCounts(newQueryCounts);
          },
        });
      }
    },
    [api, getEndpointParams, organization.slug, queryCounts]
  );

  const fetchStats = useCallback(
    async (newGroupIds: string[]) => {
      // If we have no groups to fetch, just skip stats
      if (!newGroupIds.length) {
        return;
      }
      const statsRequestParams: StatEndpointParams = {
        ...getEndpointParams(),
        groups: newGroupIds,
      };
      // If no stats period values are set, use default
      if (!statsRequestParams.statsPeriod && !statsRequestParams.start) {
        statsRequestParams.statsPeriod = DEFAULT_STATS_PERIOD;
      }

      try {
        const data = await api.requestPromise(
          `/organizations/${organization.slug}/issues-stats/`,
          {
            method: 'GET',
            data: qs.stringify(statsRequestParams),
          }
        );

        if (data) {
          GroupStore.onPopulateStats(newGroupIds, data);
          trackTabViewed(newGroupIds, data, queryCount);
        }
      } catch (e) {
        setError(parseApiError(e));
      } finally {
        // End navigation transaction to prevent additional page requests from impacting page metrics.
        // Other transactions include stacktrace preview request
        const currentSpan = Sentry.getActiveSpan();
        const rootSpan = currentSpan ? Sentry.getRootSpan(currentSpan) : undefined;
        if (rootSpan && Sentry.spanToJSON(rootSpan).op === 'navigation') {
          rootSpan.end();
        }
      }
    },
    [getEndpointParams, api, organization.slug, trackTabViewed, queryCount]
  );

  const fetchData = useCallback(
    (fetchAllCounts = false) => {
      if (realtimeActive || (!actionTakenRef.current && !undoRef.current)) {
        GroupStore.loadInitialData([]);

        setIssuesLoading(true);
        setQueryCount(0);
        setError(null);
      }

      const span = getCurrentSentryReactRootSpan();
      span?.setAttribute('query.sort', sort);

      setError(null);

      api.clear();
      pollerRef.current?.disable();

      api.request(`/organizations/${organization.slug}/issues/`, {
        method: 'GET',
        data: qs.stringify(requestParams),
        success: async (data, _, resp) => {
          if (!resp) {
            return;
          }

          // If this is a direct hit, we redirect to the intended result directly.
          if (resp.getResponseHeader('X-Sentry-Direct-Hit') === '1') {
            let redirect: string;
            if (data[0]?.matchingEventId) {
              const {id, matchingEventId} = data[0];
              redirect = `/organizations/${organization.slug}/issues/${id}/events/${matchingEventId}/`;
            } else {
              const {id} = data[0];
              redirect = `/organizations/${organization.slug}/issues/${id}/`;
            }

            navigate(
              normalizeUrl({
                pathname: redirect,
                query: {
                  referrer: 'issue-list',
                  ...extractSelectionParameters(location.query),
                },
              }),
              {replace: true}
            );
            return;
          }

          if (undoRef.current) {
            GroupStore.loadInitialData(data);
          }
          GroupStore.add(data);

          if (data.length === 0) {
            trackAnalytics('issue_search.empty', {
              organization,
              search_type: 'issues',
              search_source: 'main_search',
              query,
            });
          }

          const hits = resp.getResponseHeader('X-Hits');
          const newQueryCount =
            typeof hits !== 'undefined' && hits ? parseInt(hits, 10) || 0 : 0;
          const maxHits = resp.getResponseHeader('X-Max-Hits');
          const newQueryMaxCount =
            typeof maxHits !== 'undefined' && maxHits ? parseInt(maxHits, 10) || 0 : 0;
          const newPageLinks = resp.getResponseHeader('Link');

          setError(null);
          setIssuesLoading(false);
          setQueryCount(newQueryCount);
          setQueryMaxCount(newQueryMaxCount);
          setPageLinks(newPageLinks !== null ? newPageLinks : '');

          fetchCounts(newQueryCount, fetchAllCounts);

          // Need to wait for stats request to finish before saving to cache
          await fetchStats(data.map((group: BaseGroup) => group.id));
          IssueListCacheStore.save(requestParams, {
            groups: GroupStore.getState() as Group[],
            queryCount: newQueryCount,
            queryMaxCount: newQueryMaxCount,
            pageLinks: newPageLinks ?? '',
          });
        },
        error: err => {
          trackAnalytics('issue_search.failed', {
            organization,
            search_type: 'issues',
            search_source: 'main_search',
            error: parseApiError(err),
          });

          setError(parseApiError(err));
          setIssuesLoading(false);
        },
        complete: () => {
          resumePolling();

          if (!realtimeActive) {
            actionTakenRef.current = false;
            undoRef.current = false;
          }
        },
      });
    },
    [
      realtimeActive,
      sort,
      api,
      organization,
      requestParams,
      fetchStats,
      fetchCounts,
      navigate,
      location.query,
      query,
      resumePolling,
    ]
  );

  useRouteAnalyticsParams({
    issue_views_enabled: organization.features.includes('issue-stream-custom-views'),
  });
  useDisableRouteAnalytics();

  // Update polling status
  useEffect(() => {
    if (realtimeActive) {
      resumePolling();
    } else {
      pollerRef.current?.disable();
    }
  }, [realtimeActive, resumePolling]);

  // Fetch data on mount if necessary
  useEffect(() => {
    const loadedFromCache = loadFromCache();
    if (!loadedFromCache) {
      // It's possible the projects query parameter is not yet ready and this
      // request will be repeated in componentDidUpdate
      fetchData();
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  const previousSelection = usePrevious(selection);
  const previousSavedSearchLoading = usePrevious(savedSearchLoading);
  const previousIssuesLoading = usePrevious(issuesLoading);

  const previousRequestParams = usePrevious(requestParams);

  // Keep data up to date
  useEffect(() => {
    const selectionChanged = !isEqual(previousSelection, selection);

    // Wait for saved searches to load before we attempt to fetch stream data
    // Selection changing could indicate that the projects query parameter has populated
    // and we should refetch data.
    if (savedSearchLoading && !selectionChanged) {
      return;
    }

    if (previousSavedSearchLoading && !savedSearchLoading) {
      return;
    }

    // If any important url parameter changed or saved search changed
    // reload data.
    if (!isEqual(previousRequestParams, requestParams)) {
      fetchData(selectionChanged);
    }
  }, [
    fetchData,
    savedSearchLoading,
    selection,
    previousSelection,
    organization.features,
    issuesLoading,
    loadFromCache,
    previousSavedSearchLoading,
    previousIssuesLoading,
    previousRequestParams,
    requestParams,
  ]);

  // Fetch members on mount
  useEffect(() => {
    const projectIds = selection.projects.map(projectId => String(projectId));

    fetchOrgMembers(api, organization.slug, projectIds).then(members => {
      setMemberList(indexMembersByProject(members));
    });
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  // If the project selection has changed reload the member list and tag keys
  // allowing autocomplete and tag sidebar to be more accurate.
  useEffect(() => {
    if (isEqual(previousSelection?.projects, selection.projects)) {
      return;
    }

    const projectIds = selection.projects.map(projectId => String(projectId));

    fetchOrgMembers(api, organization.slug, projectIds).then(members => {
      setMemberList(indexMembersByProject(members));
    });
  }, [api, organization.slug, selection.projects, previousSelection?.projects]);

  // Cleanup
  useEffect(() => {
    return () => {
      pollerRef.current?.disable();
      SelectedGroupStore.reset();
      GroupStore.reset();
    };
  }, []);

  const allResultsVisible = useCallback(() => {
    if (!pageLinks) {
      return false;
    }

    const links = parseLinkHeader(pageLinks);
    return links && !links.previous!.results && !links.next!.results;
  }, [pageLinks]);

  const getPageCounts = useCallback(() => {
    const links = parseLinkHeader(pageLinks);
    const queryPageInt = parsePageQueryParam(location, 0);
    // Cursor must be present for the page number to be used
    const page = !location.query.cursor ? 0 : queryPageInt;

    let numPreviousIssues = Math.min(page * MAX_ITEMS, queryCount);

    // Because the query param `page` is not tied to the request, we need to
    // validate that it's correct at the first and last page
    if (!links?.next?.results || allResultsVisible()) {
      // On last available page
      numPreviousIssues = Math.max(queryCount - groupIds.length, 0);
    } else if (!links?.previous?.results) {
      // On first available page
      numPreviousIssues = 0;
    }

    return {
      numPreviousIssues,
      numIssuesOnPage: groupIds.length,
    };
  }, [pageLinks, location, queryCount, allResultsVisible, groupIds.length]);

  const onRealtimeChange = useCallback(
    (realtime: boolean) => {
      Cookies.set('realtimeActive', realtime.toString());
      setRealtimeActive(realtime);
      trackAnalytics('issues_stream.realtime_clicked', {
        organization,
        enabled: realtime,
      });
    },
    [organization]
  );

  const transitionTo = (
    newParams: Partial<EndpointParams> = {},
    newSavedSearch: (SavedSearch & {projectId?: number}) | null = savedSearch
  ) => {
    const queryData = {
      ...omit(location.query, ['page', 'cursor']),
      referrer: 'issue-list',
      ...getEndpointParams(),
      ...newParams,
    };
    let path: string;

    if (newSavedSearch?.id) {
      path = `/organizations/${organization.slug}/issues/searches/${newSavedSearch.id}/`;

      // Remove the query as saved searches bring their own query string.
      delete queryData.query;

      // If we aren't going to another page in the same search
      // drop the query and replace the current project, with the saved search search project
      // if available.
      if (!queryData.cursor && newSavedSearch.projectId) {
        queryData.project = [newSavedSearch.projectId];
      }
      if (!queryData.cursor && !newParams.sort && newSavedSearch.sort) {
        queryData.sort = newSavedSearch.sort;
      }
    } else {
      path = `/organizations/${organization.slug}/issues/`;
    }

    if (
      queryData.sort === IssueSortOptions.INBOX &&
      !FOR_REVIEW_QUERIES.includes(queryData.query || '')
    ) {
      delete queryData.sort;
    }

    if (path !== location.pathname || !isEqual(query, location.query)) {
      navigate({
        pathname: normalizeUrl(path),
        query: queryData,
      });
      setIssuesLoading(true);
    }
  };

  const onSearch = (newQuery: string) => {
    if (newQuery === query) {
      // if query is the same, just re-fetch data
      fetchData();
    } else {
      // Clear the saved search as the user wants something else.
      transitionTo({query: newQuery}, null);
    }
  };

  const onSortChange = (newSort: string) => {
    trackAnalytics('issues_stream.sort_changed', {
      organization,
      sort: newSort,
    });
    transitionTo({sort: newSort});
  };

  const onCursorChange: CursorHandler = (nextCursor, _path, _query, delta) => {
    const queryPageInt = Array.isArray(location.query.page)
      ? NaN
      : parseInt(location.query.page?.toString() ?? '', 10);
    let nextPage: number | undefined = isNaN(queryPageInt) ? delta : queryPageInt + delta;

    let cursor: undefined | string = nextCursor;

    // unset cursor and page when we navigate back to the first page
    // also reset cursor if somehow the previous button is enabled on
    // first page and user attempts to go backwards
    if (nextPage <= 0) {
      cursor = undefined;
      nextPage = undefined;
    }

    transitionTo({cursor, page: nextPage});
  };

  const onSelectStatsPeriod = (period: string) => {
    if (period !== getGroupStatsPeriod()) {
      const cursor = Array.isArray(location.query.cursor)
        ? location.query.cursor[0]
        : location.query.cursor ?? undefined;
      const queryPageInt = parsePageQueryParam(location, 0);
      const page = !location.query.cursor ? 0 : queryPageInt;
      transitionTo({cursor, page, groupStatsPeriod: period});
    }
  };

  const undoAction = ({
    data,
    groupItems,
  }: {
    data: IssueUpdateData;
    groupItems: BaseGroup[];
  }) => {
    const projectIds = selection?.projects?.map(p => p.toString());
    const endpoint = `/organizations/${organization.slug}/issues/`;

    api.clear();

    api.request(endpoint, {
      method: 'PUT',
      data,
      query: {
        project: projectIds,
        id: groupItems.map(group => group.id),
      },
      success: response => {
        if (!response) {
          return;
        }
        // If on the Ignore or For Review tab, adding back to the GroupStore will make the issue show up
        // on this page for a second and then be removed (will show up on All Unresolved). This is to
        // stop this from happening and avoid confusion.
        if (!query.includes('is:ignored') && !isForReviewQuery(query)) {
          GroupStore.add(groupItems);
        }
        actionTakenRef.current = true;
      },
      error: err => {
        setError(parseApiError(err));
        setIssuesLoading(false);
      },
      complete: () => {
        fetchData(true);
      },
    });
  };

  const onIssueAction = ({
    itemIds,
    actionType,
    shouldRemove,
    undo,
  }: {
    actionType: 'Reviewed' | 'Resolved' | 'Ignored' | 'Archived' | 'Reprioritized';
    itemIds: string[];
    shouldRemove: boolean;
    undo?: () => void;
  }) => {
    if (itemIds.length > 1) {
      addMessage(`${actionType} ${itemIds.length} ${t('Issues')}`, 'success', {
        duration: 4000,
        undo,
      });
    } else {
      const shortId = itemIds.map(item => GroupStore.get(item)?.shortId).toString();
      addMessage(`${actionType} ${shortId}`, 'success', {
        duration: 4000,
        undo,
      });
    }

    if (!shouldRemove) {
      return;
    }

    const links = parseLinkHeader(pageLinks);

    GroupStore.remove(itemIds);

    const newQueryCount = queryCount - itemIds.length;
    actionTakenRef.current = true;
    setQueryCount(newQueryCount);

    if (GroupStore.getAllItemIds().length === 0) {
      // If we run out of issues on the last page, navigate back a page to
      // avoid showing an empty state - if not on the last page, just show a spinner
      const shouldGoBackAPage = links?.previous?.results && !links?.next?.results;
      transitionTo({cursor: shouldGoBackAPage ? links.previous!.cursor : undefined});
      fetchCounts(newQueryCount, true);
    } else {
      fetchData(true);
    }
  };

  const onActionTaken = (itemIds: string[], data: IssueUpdateData) => {
    if (realtimeActive) {
      return;
    }

    const groupItems = itemIds.map(id => GroupStore.get(id)).filter(defined);

    if ('status' in data) {
      if (data.status === 'resolved') {
        onIssueAction({
          itemIds,
          actionType: 'Resolved',
          shouldRemove:
            query.includes('is:unresolved') ||
            query.includes('is:ignored') ||
            isForReviewQuery(query),
          undo: () =>
            undoAction({
              data: {status: GroupStatus.UNRESOLVED, statusDetails: {}},
              groupItems,
            }),
        });
        return;
      }

      if (data.status === 'ignored') {
        onIssueAction({
          itemIds,
          actionType: 'Archived',
          shouldRemove: query.includes('is:unresolved') || isForReviewQuery(query),
          undo: () =>
            undoAction({
              data: {status: GroupStatus.UNRESOLVED, statusDetails: {}},
              groupItems,
            }),
        });
        return;
      }
    }

    if ('inbox' in data && data.inbox === false) {
      onIssueAction({
        itemIds,
        actionType: 'Reviewed',
        shouldRemove: isForReviewQuery(query),
      });
      return;
    }

    if ('priority' in data && typeof data.priority === 'string') {
      const priorityValues = parseIssuePrioritySearch(query);
      const priority = data.priority.toLowerCase() as PriorityLevel;

      onIssueAction({
        itemIds,
        actionType: 'Reprioritized',
        shouldRemove: !priorityValues.has(priority),
      });
      return;
    }
  };

  const onDelete = () => {
    actionTakenRef.current = true;
    fetchData(true);
  };

  const paginationAnalyticsEvent = (direction: string) => {
    trackAnalytics('issues_stream.paginate', {
      organization,
      direction,
    });
  };

  const onSavedSearchSelect = (newSavedSearch: SavedSearch) => {
    trackAnalytics('organization_saved_search.selected', {
      organization,
      search_type: 'issues',
      id: newSavedSearch.id ? parseInt(newSavedSearch.id, 10) : -1,
      is_global: newSavedSearch.isGlobal,
      query: newSavedSearch.query,
      visibility: newSavedSearch.visibility,
    });
    setIssuesLoading(true);
    setTimeout(() => {
      transitionTo(undefined, newSavedSearch);
    }, 0);
  };

  const modifiedQueryCount = Math.max(queryCount, 0);

  // TODO: these two might still be in use for reprocessing2
  const showReprocessingTab = !!queryCounts?.[Query.REPROCESSING]?.count;
  const displayReprocessingActions = showReprocessingTab && query === Query.REPROCESSING;

  const {numPreviousIssues, numIssuesOnPage} = getPageCounts();

  return (
    <NewTabContextProvider>
      <Layout.Page>
        {organization.features.includes('issue-stream-custom-views') ? (
          <ErrorBoundary message={'Failed to load custom tabs'} mini>
            <IssueViewsIssueListHeader
              router={router}
              selectedProjectIds={selection.projects}
              realtimeActive={realtimeActive}
              onRealtimeChange={onRealtimeChange}
            />
          </ErrorBoundary>
        ) : (
          <IssueListHeader
            organization={organization}
            query={query}
            sort={sort}
            queryCount={queryCount}
            queryCounts={queryCounts}
            realtimeActive={realtimeActive}
            router={router}
            displayReprocessingTab={showReprocessingTab}
            selectedProjectIds={selection.projects}
            onRealtimeChange={onRealtimeChange}
          />
        )}

        <StyledBody>
          <StyledMain>
            <IssuesDataConsentBanner source="issues" />
            <IssueListFilters
              query={query}
              sort={sort}
              onSortChange={onSortChange}
              onSearch={onSearch}
            />
            <IssueListTable
              selection={selection}
              query={query}
              queryCount={modifiedQueryCount}
              onSelectStatsPeriod={onSelectStatsPeriod}
              onActionTaken={onActionTaken}
              onDelete={onDelete}
              statsPeriod={getGroupStatsPeriod()}
              groupIds={groupIds}
              allResultsVisible={allResultsVisible()}
              displayReprocessingActions={displayReprocessingActions}
              sort={sort}
              onSortChange={onSortChange}
              memberList={memberList}
              selectedProjectIds={selection.projects}
              issuesLoading={issuesLoading}
              error={error}
              refetchGroups={fetchData}
              paginationCaption={
                !issuesLoading && modifiedQueryCount > 0
                  ? tct('[start]-[end] of [total]', {
                      start: numPreviousIssues + 1,
                      end: numPreviousIssues + numIssuesOnPage,
                      total: (
                        <QueryCount
                          hideParens
                          hideIfEmpty={false}
                          count={modifiedQueryCount}
                          max={queryMaxCount || 100}
                        />
                      ),
                    })
                  : null
              }
              pageLinks={pageLinks}
              onCursor={onCursorChange}
              paginationAnalyticsEvent={paginationAnalyticsEvent}
              personalSavedSearches={savedSearches?.filter(
                search => search.visibility === 'owner'
              )}
              organizationSavedSearches={savedSearches?.filter(
                search => search.visibility === 'organization'
              )}
            />
          </StyledMain>
          <SavedIssueSearches
            {...{organization, query}}
            onSavedSearchSelect={onSavedSearchSelect}
            sort={sort}
          />
        </StyledBody>
      </Layout.Page>
    </NewTabContextProvider>
  );
}

export default Sentry.withProfiler(IssueListOverview);

const StyledBody = styled('div')`
  background-color: ${p => p.theme.background};

  flex: 1;
  display: grid;
  gap: 0;
  padding: 0;

  grid-template-rows: 1fr;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas: 'content saved-searches';
`;

const StyledMain = styled('section')`
  grid-area: content;
  padding: ${space(2)};

  @media (min-width: ${p => p.theme.breakpoints.medium}) {
    padding: ${space(3)} ${space(4)};
  }
`;