import './search.css';

import { useEffect, useRef, useState } from 'preact/hooks';
import { useParams, useSearchParams } from 'react-router-dom';

import AccountBlock from '../components/account-block';
import Icon from '../components/icon';
import Link from '../components/link';
import Loader from '../components/loader';
import Menu from '../components/menu';
import Status from '../components/status';
import { api } from '../utils/api';
import useTitle from '../utils/useTitle';

function Search() {
  const params = useParams();
  const { masto, instance, authenticated } = api({
    instance: params.instance,
  });
  const [uiState, setUiState] = useState('default');
  const [searchParams, setSearchParams] = useSearchParams();
  const searchFieldRef = useRef();
  const q = searchParams.get('q');
  useTitle(q ? `Search: ${q}` : 'Search', `/search`);

  const [statusResults, setStatusResults] = useState([]);
  const [accountResults, setAccountResults] = useState([]);
  const [hashtagResults, setHashtagResults] = useState([]);
  useEffect(() => {
    searchFieldRef.current?.focus?.();
    if (q) {
      searchFieldRef.current.value = q;

      setUiState('loading');
      (async () => {
        const results = await masto.v2.search({
          q,
          limit: 20,
          resolve: authenticated,
        });
        console.log(results);
        setStatusResults(results.statuses);
        setAccountResults(results.accounts);
        setHashtagResults(results.hashtags);
        setUiState('default');
      })();
    }
  }, [q, instance]);

  return (
    <div id="search-page" class="deck-container">
      <div class="timeline-deck deck">
        <header>
          <div class="header-grid">
            <div class="header-side">
              <Menu />
            </div>
            <form
              onSubmit={(e) => {
                e.preventDefault();
                const { q } = e.target;
                if (q.value) {
                  setSearchParams({ q: q.value });
                } else {
                  setSearchParams({});
                }
              }}
            >
              <input
                ref={searchFieldRef}
                name="q"
                type="search"
                autofocus
                placeholder="Search"
                onSearch={(e) => {
                  if (!e.target.value) {
                    setSearchParams({});
                  }
                }}
              />
            </form>
            <div class="header-side" />
          </div>
        </header>
        <main>
          {!!q && uiState !== 'loading' ? (
            <>
              <h2 class="timeline-header">Accounts</h2>
              {accountResults.length > 0 ? (
                <ul class="timeline flat accounts-list">
                  {accountResults.map((account) => (
                    <li>
                      <AccountBlock account={account} instance={instance} />
                    </li>
                  ))}
                </ul>
              ) : (
                <p class="ui-state">No accounts found.</p>
              )}
              <h2 class="timeline-header">Hashtags</h2>
              {hashtagResults.length > 0 ? (
                <ul class="link-list hashtag-list">
                  {hashtagResults.map((hashtag) => (
                    <li>
                      <Link
                        to={
                          instance
                            ? `/${instance}/t/${hashtag.name}`
                            : `/t/${hashtag.name}`
                        }
                      >
                        <Icon icon="hashtag" />
                        <span>{hashtag.name}</span>
                      </Link>
                    </li>
                  ))}
                </ul>
              ) : (
                <p class="ui-state">No hashtags found.</p>
              )}
              <h2 class="timeline-header">Posts</h2>
              {statusResults.length > 0 ? (
                <ul class="timeline">
                  {statusResults.map((status) => (
                    <li>
                      <Link
                        class="status-link"
                        to={
                          instance
                            ? `/${instance}/s/${status.id}`
                            : `/s/${status.id}`
                        }
                      >
                        <Status status={status} />
                      </Link>
                    </li>
                  ))}
                </ul>
              ) : (
                <p class="ui-state">No posts found.</p>
              )}
            </>
          ) : uiState === 'loading' ? (
            <p class="ui-state">
              <Loader abrupt />
            </p>
          ) : (
            <p class="ui-state">
              Enter your search term or paste a URL above to get started.
            </p>
          )}
        </main>
      </div>
    </div>
  );
}

export default Search;