// Search step — side-by-side: Ibex keyword search vs Malachyte personalized search.
// Three scripted queries expose where ibex.com's literal keyword search breaks down:
//   1. TYPO     — misspelled + "merino/wool" never appears in product titles → 0 results
//   2. SEMANTIC — natural-language intent ("warmest for skiing") → 0 results
//   3. COMBO    — attribute + activity ("midweight quarter zip for hiking") → unranked noise
// Malachyte resolves each to an intent vector (matched against titles, types AND category
// tags), filters to the visitor's gender, and ranks by their vector.

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 keywordResults = React.useMemo(() => {
    // Ibex today: literal word match against product title + type only. Typos & intent → 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) => (b.isNew - a.isNew) || (b.price - a.price)).slice(0, 6);
  }, [query]);

  const favWeights = window.buildFavWeights ? window.buildFavWeights(favorites) : null;
  const personalizedResults = React.useMemo(() => {
    // Malachyte: resolve scripted query → aliases (typo fix + semantic intent), match against
    // title + type + category tags, filter to the visitor's gender, rank on 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 => {
      if (p.gender !== persona.gender) return false;
      const hay = (p.name + ' ' + p.type + ' ' + p.cats.join(' ')).toLowerCase();
      return aliases.some(a => hay.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: 'meirno woll base layr',                    intent: 'typo',     aliases: ['merino', 'wool', 'base-layer'] },
  { q: 'warmest layers for skiing in freezing cold', intent: 'semantic', aliases: ['ski', 'warm', 'heavyweight'] },
  { q: 'midweight quarter zip for hiking',         intent: 'combo',    aliases: ['zip', 'hike', 'midweight'] },
];

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>
        {isMal
          ? <img src="assets/malachyte-logo-gradient.png" alt="Malachyte" className="sbs-col__logo sbs-col__logo--mal" />
          : <span className="sbs-col__logo sbs-col__logo--ibex"><img src="assets/ibex-logo.png" alt="Ibex" /><b>ibex</b></span>}
        <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">
            ibex.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 ibex.com…'}
              </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 || []).map(prettyCat).join(' + ') || 'intent vector'} — ${persona.gender.toLowerCase()}'s catalog, ranked for ${persona.userId}.`
                : results.length
                  ? `Returned in catalog order across all genders. No intent, no persona signal.`
                  : `No products match those exact words. Keyword search can't handle typos, intent, or the fact that "merino" never appears in product titles.`}
            </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 });