// Search step — side-by-side: keyword search vs personalized search
// Search bar lives inside each column (like the real wihatools.com header search).

function StepSearch({ state, setState }) {
  const persona = window.PERSONAS.find(p => p.id === state.persona) || window.PERSONAS[0];
  const favorites = state.favorites || [];

  const [query, setQuery] = React.useState(SCRIPTED_QUERIES[0].q);

  const switchPersona = (id) => setState(s => ({ ...s, persona: id, favorites: [] }));

  const keywordResults = React.useMemo(() => {
    // Alpha: literal word match against product name. Typos & semantic queries return 0.
    const words = query.toLowerCase().split(/\s+/).filter(w => w.length > 2);
    if (!words.length) return [];
    return window.PRODUCTS.filter(p => {
      const n = (p.name + ' ' + p.type).toLowerCase();
      return words.every(w => n.includes(w));
    }).sort((a, b) => a.sku.localeCompare(b.sku)).slice(0, 6);
  }, [query]);

  const favWeights = window.buildFavWeights ? window.buildFavWeights(favorites) : null;
  const personalizedResults = React.useMemo(() => {
    // Malachyte: resolve scripted query to its aliases (typo fix + semantic intent),
    // then rank against the persona vector.
    const scripted = SCRIPTED_QUERIES.find(s => s.q === query);
    const aliases = scripted ? scripted.aliases : [query.toLowerCase()];
    if (!aliases.length) return [];
    const pool = window.PRODUCTS.filter(p => {
      const n = (p.name + ' ' + p.type).toLowerCase();
      return aliases.some(a => n.includes(a));
    });
    return window.rankProducts(pool, persona, favWeights).slice(0, 6);
  }, [query, persona, favWeights]);

  return (
    <div className="sbs-shell">
      <div className="sbs-grid">
        <SearchColumn mode="alpha" query={query} setQuery={setQuery} results={keywordResults} persona={persona} />
        <SearchColumn mode="malachyte" query={query} setQuery={setQuery} results={personalizedResults} persona={persona} favWeights={favWeights} />
      </div>
    </div>
  );
}

const SCRIPTED_QUERIES = [
  { q: 'pikofinish drivrs',                            intent: 'typo',     aliases: ['picofinish', 'pico'] },
  { q: "what tools won't shock me in the breaker box", intent: 'semantic', aliases: ['insulated'] },
  { q: 'torq wrnch for fleet mechnic',                 intent: 'combo',    aliases: ['torque', 'wrench'] },
];

function SearchColumn({ mode, query, setQuery, results, persona, favWeights }) {
  const isMal = mode === 'malachyte';
  const handleImgErr = (e) => { e.target.src = window.PRODUCT_FALLBACK; };
  const [open, setOpen] = React.useState(false);

  const pick = (q) => { setQuery(q); setOpen(false); };

  return (
    <div className={`sbs-col sbs-col--${mode}`}>
      <div className="sbs-col__head">
        <span className="sbs-col__tag">{isMal ? 'AFTER' : 'BEFORE'}</span>
        <img
          src={isMal ? 'assets/malachyte-logo-gradient.png' : 'assets/wiha-logo.png'}
          alt={isMal ? 'Malachyte' : 'Wiha'}
          className={`sbs-col__logo sbs-col__logo--${isMal ? 'mal' : 'wiha'}`}
        />
        <span className="sbs-col__caption">{isMal ? 'Personalized search' : 'Keyword match'}</span>
      </div>

      <div className="sbs-col__viewport">
        <div className="demo-urlbar">
          <div className="demo-urlbar__dots"><span /><span /><span /></div>
          <div className="demo-urlbar__url">
            wihatools.com/search?q={encodeURIComponent(query)}{isMal ? ' · personalized by malachyte' : ''}
          </div>
        </div>

        <WihaChrome />

        <div className="wiha-plp-root">
          <div className={`search-bar-row ${open ? 'is-active' : ''}`}>
            <button className="search-bar-trigger" onClick={() => setOpen(o => !o)}>
              <span className={`search-bar-trigger-text ${!query ? 'is-placeholder' : ''}`}>
                {query || 'Search Wiha tools…'}
              </span>
              <span className="search-bar-trigger-caret">▾</span>
            </button>

            {open && (
              <div className="search-bar-menu">
                <div className="search-bar-menu-eye">SCRIPTED QUERIES</div>
                {SCRIPTED_QUERIES.map(s => (
                  <button
                    key={s.q}
                    className={`search-bar-menu-item ${s.q === query ? 'is-selected' : ''}`}
                    onClick={() => pick(s.q)}
                  >
                    <span className="search-bar-menu-item-q">{s.q}</span>
                    <span className={`search-bar-menu-item-intent search-bar-menu-item-intent--${s.intent}`}>{s.intent}</span>
                  </button>
                ))}
              </div>
            )}
          </div>

          <div className="search-head">
            <div className="search-head__eye">
              {isMal ? 'PERSONALIZED RESULTS' : 'KEYWORD RESULTS'}
            </div>
            <h2 className="search-head__title">
              {results.length} matches for "{query}"
            </h2>
            <p className="search-head__note">
              {isMal
                ? `Resolved to ${(SCRIPTED_QUERIES.find(s => s.q === query)?.aliases || []).join(' + ') || 'intent vector'} — ranked for ${persona.userId}.`
                : results.length
                  ? `Returned in catalog order. No persona signal applied.`
                  : `No products match those exact words. Keyword search can't handle typos or intent.`}
            </p>
          </div>

          <div className="wiha-grid">
            {Array.from({ length: 6 }).map((_, i) => {
              const p = results[i];
              if (p) {
                return (
                  <ProductCard
                    key={p.id}
                    product={p}
                    index={i}
                    mode={mode}
                    persona={persona}
                    favWeights={favWeights}
                    isFav={false}
                    onFav={() => {}}
                    onImgErr={handleImgErr}
                  />
                );
              }
              return (
                <div key={`empty-${i}`} className="wiha-card wiha-card--empty">
                  <div className="wiha-card__empty-glyph">—</div>
                  <div className="wiha-card__empty-msg">no match</div>
                </div>
              );
            })}
          </div>
        </div>
      </div>
    </div>
  );
}

function prettyChips(chips) {
  if (!chips || !chips.length) return '';
  if (chips.length === 1) return chips[0];
  return chips.slice(0, -1).join(', ') + ' and ' + chips[chips.length - 1];
}

Object.assign(window, { StepSearch });