import { useQueries, useQuery, UseQueryOptions, type UseQueryResult } from '@tanstack/react-query';

import { usePlHooksApiClient } from 'pl-hooks/contexts/api-client';
import { queryClient, usePlHooksQueryClient } from 'pl-hooks/contexts/query-client';
import { usePoll } from 'pl-hooks/hooks/polls/use-poll';
import { importEntities } from 'pl-hooks/importer';
import { type NormalizedAccount } from 'pl-hooks/normalizers/account';
import { type NormalizedStatus, normalizeStatus } from 'pl-hooks/normalizers/status';

import type { Poll } from 'pl-api';

// const toServerSideType = (columnType: string): Filter['context'][0] => {
//   switch (columnType) {
//     case 'home':
//     case 'notifications':
//     case 'public':
//     case 'thread':
//       return columnType;
//     default:
//       if (columnType.includes('list:')) {
//         return 'home';
//       } else {
//         return 'public'; // community, account, hashtag
//       }
//   }
// };

// type FilterContext = { contextType?: string };

// const getFilters = (state: RootState, query: FilterContext) =>
//   state.filters.filter((filter) =>
//     (!query?.contextType || filter.context.includes(toServerSideType(query.contextType)))
//       && (filter.expires_at === null || Date.parse(filter.expires_at) > new Date().getTime()),
//   );

// const escapeRegExp = (string: string) =>
//   string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string

// const regexFromFilters = (filters: ImmutableList<Filter>) => {
//   if (filters.size === 0) return null;

//   return new RegExp(filters.map(filter =>
//     filter.keywords.map(keyword => {
//       let expr = escapeRegExp(keyword.keyword);

//       if (keyword.whole_word) {
//         if (/^[\w]/.test(expr)) {
//           expr = `\\b${expr}`;
//         }

//         if (/[\w]$/.test(expr)) {
//           expr = `${expr}\\b`;
//         }
//       }

//       return expr;
//     }).join('|'),
//   ).join('|'), 'i');
// };

// const checkFiltered = (index: string, filters: ImmutableList<Filter>) =>
//   filters.reduce((result: Array<string>, filter) =>
//     result.concat(filter.keywords.reduce((result: Array<string>, keyword) => {
//       let expr = escapeRegExp(keyword.keyword);

//       if (keyword.whole_word) {
//         if (/^[\w]/.test(expr)) {
//           expr = `\\b${expr}`;
//         }

//         if (/[\w]$/.test(expr)) {
//           expr = `${expr}\\b`;
//         }
//       }

//       const regex = new RegExp(expr);

//       if (regex.test(index)) return result.concat(filter.title);
//       return result;
//     }, [])), []);

const importStatus = (status: NormalizedStatus) => {
  queryClient.setQueryData<NormalizedStatus>(
    ['statuses', 'entities', status.id],
    status,
  );
};

type Status = NormalizedStatus & {
  account: NormalizedAccount;
  accounts: Array<NormalizedAccount>;
  poll?: Poll;
  reblog?: Status;
};

interface UseStatusOpts {
  language?: string;
  withReblog?: boolean;
}

type UseStatusQueryResult = Omit<UseQueryResult<NormalizedStatus>, 'data'> & { data: Status | undefined };

const useStatus = (statusId?: string, opts: UseStatusOpts = { withReblog: true }): UseStatusQueryResult => {
  const queryClient = usePlHooksQueryClient();
  const { client } = usePlHooksApiClient();

  const statusQuery = useQuery({
    queryKey: ['statuses', 'entities', statusId],
    queryFn: () => client.statuses.getStatus(statusId!, {
      language: opts.language,
    })
      .then(status => (importEntities({ statuses: [status] }, { withParents: false }), status))
      .then(normalizeStatus),
    enabled: !!statusId,
  }, queryClient);

  const status = statusQuery.data;

  const pollQuery = usePoll(status?.poll_id || undefined);

  let reblogQuery: UseStatusQueryResult | undefined;
  if (opts.withReblog) {
    reblogQuery = useStatus(status?.reblog_id || undefined, { ...opts, withReblog: false });
  }

  const accountsQuery = useQueries<UseQueryOptions<NormalizedAccount>[]>({
    queries: status?.account_ids.map(accountId => ({
      queryKey: ['accounts', 'entities', accountId],
    })) || [],
  }, queryClient);

  let data: Status | undefined;

  if (status) {
    data = {
      ...status,
      account: accountsQuery[0].data!,
      accounts: accountsQuery.map(({ data }) => data!).filter(Boolean),
      poll: pollQuery.data || undefined,
      reblog: reblogQuery?.data || undefined,
      // quote,
      // reblog,
      // poll
    };
  }

  return { ...statusQuery, data };
};

export { useStatus, importStatus, type Status as UseStatusData };