/* Bar Pivoine — main.js */

// ── Taxonomy slug helper (matches design's taxSlug) ──────────────────────────
function taxSlug(s) {
  return String(s).toLowerCase().replace(/&/g, "and").replace(/[^a-z0-9]+/g, "-").replace(/^-|-$/g, "");
}

// ── Build taxonomy facets from cocktail list ─────────────────────────────────
function buildTax(list) {
  const acc = { alcoholic: {}, category: {}, glass: {}, ingredient: {} };
  const add = (bucket, raw) => {
    if (!raw) return;
    const slug = taxSlug(raw);
    if (!slug) return;
    const e = bucket[slug] || (bucket[slug] = { value: raw, count: 0, slug });
    e.count++;
  };
  list.forEach(c => {
    add(acc.alcoholic,  c.alcoholic);
    add(acc.category,   c.category);
    add(acc.glass,      c.glass);
    (c.ingredients || []).forEach(i => add(acc.ingredient, i.name));
  });
  const sort = o => Object.values(o).sort((a, b) => b.count - a.count || a.value.localeCompare(b.value));
  return {
    alcoholic:  sort(acc.alcoholic),
    category:   sort(acc.category),
    glass:      sort(acc.glass),
    ingredient: sort(acc.ingredient),
  };
}

// ── HTMX progress bar ────────────────────────────────────────────────────────
(function () {
  const bar = document.getElementById("progress-bar");
  if (!bar) return;
  document.addEventListener("htmx:beforeRequest",  () => bar.classList.add("htmx-request"));
  document.addEventListener("htmx:afterSwap",      () => { bar.classList.remove("htmx-request"); });
  document.addEventListener("htmx:responseError",  () => bar.classList.remove("htmx-request"));
})();

// ── Alpine store ─────────────────────────────────────────────────────────────
document.addEventListener("alpine:init", () => {
  Alpine.store("nav", { open: false });
});

// ── Cocktail search + filter component (Alpine x-data) ───────────────────────
function cocktailSearch() {
  return {
    q:          "",
    active:     { alcoholic: "", category: "", glass: "", ingredient: "" },
    page:       1,
    perPage:    24,
    openFilter: null,
    all:        [],
    tax:        { alcoholic: [], category: [], glass: [], ingredient: [] },

    init() {
      this.all = window.__COCKTAILS__ || [];
      this.tax = buildTax(this.all);

      const p = new URLSearchParams(window.location.search);
      this.q                  = p.get("q")          || "";
      this.active.alcoholic   = p.get("alcoholic")  || "";
      this.active.category    = p.get("category")   || "";
      this.active.glass       = p.get("glass")      || "";
      this.active.ingredient  = p.get("ingredient") || "";
      this.page               = parseInt(p.get("page") || "1", 10);

      // Close any open filter on outside click
      document.addEventListener("click", e => {
        if (!e.target.closest("[data-fgroup]")) this.openFilter = null;
      });
    },

    get filtered() {
      const needle = this.q.trim().toLowerCase();
      return this.all.filter(c => {
        if (this.active.alcoholic  && taxSlug(c.alcoholic)  !== this.active.alcoholic)  return false;
        if (this.active.category   && taxSlug(c.category)   !== this.active.category)   return false;
        if (this.active.glass      && taxSlug(c.glass)       !== this.active.glass)       return false;
        if (this.active.ingredient && !c.ingredients.some(i => taxSlug(i.name) === this.active.ingredient)) return false;
        if (needle) {
          const hay = (c.name + " " + c.category + " " + c.glass + " " +
                       c.ingredients.map(i => i.name).join(" ")).toLowerCase();
          if (!hay.includes(needle)) return false;
        }
        return true;
      });
    },

    get totalPages() {
      return Math.max(1, Math.ceil(this.filtered.length / this.perPage));
    },

    get paged() {
      const s = (this.page - 1) * this.perPage;
      return this.filtered.slice(s, s + this.perPage);
    },

    get activeCount() {
      return Object.values(this.active).filter(Boolean).length + (this.q ? 1 : 0);
    },

    get isFiltered() { return this.activeCount > 0; },

    nobLabel(c) {
      if (c.alcoholic === "Alcoholic")         return "Spirited";
      if (c.alcoholic === "Non alcoholic")     return "Zero-proof";
      return "Optional";
    },

    valLabel(key, slug) {
      const t = this.tax[key].find(i => i.slug === slug);
      return t ? t.value : slug;
    },

    toggleFilter(key) {
      this.openFilter = this.openFilter === key ? null : key;
    },

    toggle(key, slug) {
      this.active[key] = this.active[key] === slug ? "" : slug;
      this.page = 1;
      this.openFilter = null;
      this.pushState();
    },

    setQuery(val) { this.q = val; this.page = 1; this.pushState(); },

    clearAll() {
      this.q = "";
      this.active = { alcoholic: "", category: "", glass: "", ingredient: "" };
      this.page = 1;
      this.pushState();
    },

    changePage(n) {
      this.page = Math.max(1, Math.min(this.totalPages, n));
      this.pushState();
      window.scrollTo({ top: 0, behavior: "smooth" });
    },

    pagerItems() {
      const total = this.totalPages, page = this.page;
      const clamp = n => Math.max(1, Math.min(total, n));
      const show = new Set([1, 2, clamp(page-2), clamp(page-1), page,
                            clamp(page+1), clamp(page+2), total-1, total]
                           .filter(n => n >= 1 && n <= total));
      const sorted = [...show].sort((a, b) => a - b);
      const items  = [];
      for (let i = 0; i < sorted.length; i++) {
        if (i > 0 && sorted[i] - sorted[i-1] > 1) items.push({ type: "dot" });
        items.push({ type: "page", n: sorted[i] });
      }
      return items;
    },

    pushState() {
      const p = new URLSearchParams();
      if (this.q)                  p.set("q",          this.q);
      if (this.active.alcoholic)   p.set("alcoholic",  this.active.alcoholic);
      if (this.active.category)    p.set("category",   this.active.category);
      if (this.active.glass)       p.set("glass",      this.active.glass);
      if (this.active.ingredient)  p.set("ingredient", this.active.ingredient);
      if (this.page > 1)           p.set("page",       this.page);
      history.replaceState({}, "", p.toString() ? "?" + p : window.location.pathname);
    },
  };
}

window.cocktailSearch = cocktailSearch;
window.taxSlug        = taxSlug;

// ── Page transition on HTMX swap ─────────────────────────────────────────────
document.addEventListener("htmx:afterSwap", () => {
  const main = document.getElementById("main-content");
  if (!main) return;
  main.style.animation = "none";
  void main.offsetHeight;
  main.style.animation = "page-in 300ms ease-out";
});

document.addEventListener("htmx:afterSettle", () => {
  window.scrollTo({ top: 0, behavior: "instant" });
});