// Search step — side-by-side: keyword match vs personalized (intent + typo + attribute) 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 text = (p) => (p.brand + ' ' + p.name + ' ' + p.type + ' ' + p.color).toLowerCase();

  const keywordResults = React.useMemo(() => {
    // Alpha: literal word match. Typos, intent words, and attribute combos return 0 / noise.
    const words = query.toLowerCase().replace(/[$,]/g, ' ').split(/\s+/).filter(w => w.length > 2);
    if (!words.length) return [];
    return window.PRODUCTS.filter(p => {
      const n = text(p);
      return words.every(w => n.includes(w));
    }).sort((a, b) => String(a.sku).localeCompare(String(b.sku))).slice(0, 6);
  }, [query]);

  const favWeights = window.buildFavWeights ? window.buildFavWeights(favorites) : null;
  const personalizedResults = React.useMemo(() => {
    // Malachyte: resolve query to its intent aliases (typo fix + semantic + attributes),
    // require every alias, 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 = text(p);
      return aliases.every(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: 'cartier love braclet',               intent: 'typo',     aliases: ['cartier', 'love', 'bracelet'] },
  { q: 'something gold to wear every day',   intent: 'semantic', aliases: ['gold'] },
  { q: 'blue tote for travel',               intent: 'combo',    aliases: ['blue', 'tote'] },
];

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 scripted = SCRIPTED_QUERIES.find(s => s.q === query);

  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>
        {isMal
          ? <img src="assets/malachyte-logo-gradient.png" alt="Malachyte" className="sbs-col__logo sbs-col__logo--mal" />
          : <img src="assets/mygemma-logo.png" alt="MyGemma" className="sbs-col__logo sbs-col__logo--mg" />}
        <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">
            mygemma.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 MyGemma…'}
              </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} {results.length === 1 ? 'match' : 'matches'} for "{query}"
            </h2>
            <p className="search-head__note">
              {isMal
                ? `Resolved to ${(scripted?.aliases || []).join(' + ') || 'intent vector'} — ranked for ${persona.userId}.`
                : results.length
                  ? `Returned in catalog order. No intent, attribute, or persona signal applied.`
                  : `No products match those exact words. Keyword search can't fix typos, read intent, or combine attributes.`}
            </p>
          </div>

          <div className="wiha-grid">
            {results.map((p, i) => (
              <ProductCard
                key={p.id}
                product={p}
                index={i}
                mode={mode}
                persona={persona}
                favWeights={favWeights}
                isFav={false}
                onFav={() => {}}
                onImgErr={handleImgErr}
              />
            ))}
          </div>
        </div>
      </div>
    </div>
  );
}

Object.assign(window, { StepSearch });