import {
    INGREDIENTS,
    CATEGORY_LABELS,
    PRODUCTS,
    pantryQtyStep,
    getProductsForIngredient,
    ingredientHasProducts,
} from '../data/catalog.js?v=8';
import { addIngredientToKitchenList, addOrMergeShoppingLines, categoryLabel, loadPantry, setPantryQty, setPantryProductQty, getPantryTotal, getPantryProducts } from '../services/pantryShopping.js?v=2';
import { showAppToast } from '../ui/toast.js';

/* ── helpers ── */

function esc(s) {
    return String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
}

function unitLabel(u) {
    return u === 'szt' ? 'szt.' : u;
}

function normalizeSearch(q) {
    return String(q).trim().toLowerCase();
}

const CATEGORY_ICONS = {
    pieczywo: 'fa-bread-slice',
    nabial: 'fa-cheese',
    mieso_ryby: 'fa-drumstick-bite',
    warzywa: 'fa-carrot',
    owoce: 'fa-apple-whole',
    suche: 'fa-wheat-awn',
    przyprawy: 'fa-leaf',
    inne: 'fa-jar',
};

const SEARCH_SHELL_SHADOW = '0 5px 10px rgba(0,0,0,0.16), 0 14px 22px rgba(0,0,0,0.24), 0 22px 34px rgba(0,0,0,0.18), inset 0 1px 0 rgba(255,255,255,0.04)';

/* ── state ── */

let showOnlyStock = false;
let editingId = null;
/** @type {Set<string>} */
const selectedCategories = new Set();

let editShopStep = 1;
let editShopUsesPacks = false;

const BOTTOM = '5.25rem';
const HIDDEN_Y = `translateY(calc(100% + ${BOTTOM}))`;

/* ══════════════════════ HTML SHELL ══════════════════════ */

export function getPantryHTML() {
    return `
    <div id="pantry-view" class="hidden flex flex-col h-full absolute inset-0 overflow-hidden z-10" style="background:#2d2e2b !important;">

        <!-- ── floating search bar ── -->
        <div class="pointer-events-none absolute inset-x-0 top-0 z-[12] px-4 pt-4" style="background:transparent !important; border:none !important;">
            <div id="pantry-search-shell" class="pointer-events-auto relative z-[1] mx-auto flex items-center w-full overflow-hidden" style="width:min(calc(100% - 0.5rem), 22.4rem); background:#393937 !important; border:1px solid #41423f !important; border-radius:999px !important; box-shadow:${SEARCH_SHELL_SHADOW} !important;">
                <input type="search" id="pantry-search" autocomplete="off" placeholder="Szukaj w spiżarni…"
                    class="w-full bg-transparent outline-none text-[15px] text-center py-[12px] pl-8 pr-14" style="background:transparent !important; border:none !important; box-shadow:none !important; color:#ddd6ca;">
                <button id="pantry-filter-btn" type="button" class="absolute right-2 top-1/2 -translate-y-1/2 w-9 h-9 flex items-center justify-center transition-colors" style="background:transparent !important; border:none !important; color:#c9c3b8;" aria-label="Filtry">
                    <i class="fas fa-sliders-h"></i>
                </button>
            </div>
        </div>

        <!-- ── filter popup ── -->
        <div id="pantry-filter-overlay" class="absolute inset-0 z-[55] hidden opacity-0 transition-opacity duration-150" style="pointer-events:none; background:rgba(0,0,0,0.5) !important;">
            <div id="pantry-filter-panel" class="absolute flex flex-col overflow-hidden rounded-[1.5rem] border" style="background:#393937 !important; border-color:#444442 !important; opacity:0; transform:translateY(-0.5rem) scale(0.98); transform-origin:top center; transition:opacity 180ms ease, transform 180ms ease; box-shadow:0 18px 40px rgba(0,0,0,0.34), 0 4px 12px rgba(0,0,0,0.18);">
                <div class="shrink-0 px-4 pt-3 pb-2 flex items-center justify-between" style="border-bottom:1px solid #444442;">
                    <p class="text-[12px] font-bold uppercase tracking-wider" style="color:#9b978f;">Filtry</p>
                    <button id="pantry-filter-clear" type="button" class="px-3 py-1 rounded-full border text-[11px] font-semibold transition-colors" style="background:#2f2f2d; border-color:#444442; color:#d7d2c8;">Wyczyść</button>
                </div>
                <div class="px-4 py-3 space-y-3 overflow-y-auto no-scrollbar" style="max-height:60vh;">
                    <div>
                        <p class="text-[10px] font-bold uppercase tracking-wider mb-2" style="color:#9b978f;">Kategorie</p>
                        <div id="pantry-filter-categories" class="flex flex-wrap gap-1.5"></div>
                    </div>
                    <div style="border-top:1px solid #444442; padding-top:0.75rem;">
                        <button type="button" id="pantry-filter-stock" class="w-full flex items-center justify-between px-3 py-2 rounded-xl transition-colors" style="background:#2f2f2d;">
                            <span class="text-[12px] font-semibold" style="color:#d7d2c8;">Tylko na stanie</span>
                            <span id="pantry-filter-stock-check" class="w-5 h-5 rounded-md flex items-center justify-center" style="border:1.5px solid #56534f;"></span>
                        </button>
                    </div>
                </div>
            </div>
        </div>

        <!-- ── scrollable content ── -->
        <div id="pantry-scroll" class="flex-1 overflow-y-auto no-scrollbar px-4 pt-[4.5rem] pb-24" style="background:#2d2e2b !important;">
            <div id="pantry-board" class="space-y-4"></div>
        </div>

        <!-- ── ingredient card popup ── -->
        <div id="pv2-card-overlay" class="absolute inset-0 z-[60] bg-black/50 hidden flex items-center justify-center p-5" style="pointer-events:none;">
            <div id="pv2-card" class="relative w-full max-w-xs rounded-2xl shadow-2xl overflow-hidden" style="background:#2d2e2b; pointer-events:auto; max-height:85vh; overflow-y:auto;">
                <div id="pv2-card-hero" class="relative w-full h-[160px] overflow-hidden" style="background:#393937;">
                    <img id="pv2-card-img" class="w-full h-full object-cover hidden" alt="" />
                    <div id="pv2-card-fallback" class="w-full h-full flex items-center justify-center">
                        <i id="pv2-card-fallback-icon" class="fas fa-box-open text-3xl" style="color:#6d6c67;"></i>
                    </div>
                    <button type="button" id="pv2-card-close" class="absolute top-3 right-3 w-8 h-8 rounded-full bg-black/50 text-white flex items-center justify-center hover:bg-black/70 transition-colors">
                        <i class="fas fa-times text-sm"></i>
                    </button>
                </div>
                <div class="px-4 pt-3 pb-4 space-y-3">
                    <div>
                        <p id="pv2-card-category" class="text-[10px] font-semibold uppercase tracking-wider" style="color:#9b978f;"></p>
                        <h3 id="pv2-card-name" class="text-[15px] font-bold leading-snug mt-0.5" style="color:#ddd6ca;"></h3>
                        <p id="pv2-card-pack" class="text-[11px] mt-0.5 hidden" style="color:#9b978f;"></p>
                    </div>
                    <div id="pv2-card-nutrition"></div>
                    <div id="pv2-card-stock-section"></div>
                    <div id="pv2-card-shop-section"></div>
                </div>
            </div>
        </div>
    </div>`;
}

/* ══════════════════════ FILTER POPUP ══════════════════════ */

function allCategoryKeys() {
    const s = new Set();
    Object.values(INGREDIENTS).forEach(d => s.add(d.category));
    return [...s].sort((a, b) => categoryLabel(a).localeCompare(categoryLabel(b)));
}

let filterCloseTimer = null;

function renderFilterCategories() {
    const wrap = document.getElementById('pantry-filter-categories');
    if (!wrap) return;
    const keys = allCategoryKeys();
    wrap.innerHTML = keys.map(k => {
        const active = selectedCategories.has(k);
        const icon = CATEGORY_ICONS[k] || 'fa-jar';
        const bg = active ? '#23221e' : '#2f2f2d';
        const border = active ? '#787876' : '#444442';
        const text = active ? '#f2efe8' : '#d7d2c8';
        return `<button type="button" data-cat="${esc(k)}" class="pv2-filter-cat px-3 py-1.5 rounded-full border text-[12px] font-semibold transition-colors inline-flex items-center gap-1.5" style="background:${bg}; border-color:${border}; color:${text};"><i class="fas ${icon} text-[10px]"></i>${esc(categoryLabel(k))}</button>`;
    }).join('');
}

function renderFilterStockCheck() {
    const el = document.getElementById('pantry-filter-stock-check');
    if (!el) return;
    el.innerHTML = showOnlyStock ? '<i class="fas fa-check text-[10px]" style="color:#6ee7b7;"></i>' : '';
    el.style.background = showOnlyStock ? '#23221e' : 'transparent';
    el.style.borderColor = showOnlyStock ? '#787876' : '#56534f';
}

function updateFilterBadge() {
    const btn = document.getElementById('pantry-filter-btn');
    if (!btn) return;
    const count = selectedCategories.size + (showOnlyStock ? 1 : 0);
    btn.style.color = count > 0 ? '#6ee7b7' : '#c9c3b8';
}

function positionFilterPanel() {
    const panel = document.getElementById('pantry-filter-panel');
    const shell = document.getElementById('pantry-search-shell');
    const view = document.getElementById('pantry-view');
    if (!panel || !shell || !view) return;
    const viewRect = view.getBoundingClientRect();
    const shellRect = shell.getBoundingClientRect();
    const gap = 8;
    const margin = 12;
    const width = Math.min(shellRect.width, viewRect.width - margin * 2);
    const top = shellRect.bottom - viewRect.top + gap;
    const left = Math.max(margin, Math.min(shellRect.left - viewRect.left, viewRect.width - width - margin));
    panel.style.width = `${width}px`;
    panel.style.left = `${left}px`;
    panel.style.top = `${top}px`;
}

function openFilterPopup() {
    const overlay = document.getElementById('pantry-filter-overlay');
    const panel = document.getElementById('pantry-filter-panel');
    if (!overlay || !panel) return;
    clearTimeout(filterCloseTimer);
    renderFilterCategories();
    renderFilterStockCheck();
    positionFilterPanel();
    overlay.classList.remove('hidden');
    overlay.style.pointerEvents = 'auto';
    requestAnimationFrame(() => {
        overlay.classList.add('opacity-100');
        panel.style.opacity = '1';
        panel.style.transform = 'translateY(0) scale(1)';
    });
}

function closeFilterPopup() {
    const overlay = document.getElementById('pantry-filter-overlay');
    const panel = document.getElementById('pantry-filter-panel');
    if (!overlay || !panel) return;
    overlay.classList.remove('opacity-100');
    overlay.style.pointerEvents = 'none';
    panel.style.opacity = '0';
    panel.style.transform = 'translateY(-0.5rem) scale(0.98)';
    filterCloseTimer = setTimeout(() => overlay.classList.add('hidden'), 180);
}

function isFilterOpen() {
    return !document.getElementById('pantry-filter-overlay')?.classList.contains('hidden');
}

// Keep old name for refreshPantry compatibility
function renderCategoryChips() {
    updateFilterBadge();
}

/* ══════════════════════ BOARD RENDERING ══════════════════════ */

function getFilteredIds(searchRaw) {
    const q = normalizeSearch(searchRaw);
    return Object.keys(INGREDIENTS).filter(id => {
        const d = INGREDIENTS[id];
        if (selectedCategories.size > 0 && !selectedCategories.has(d.category)) return false;
        if (!q) return true;
        return d.name.toLowerCase().includes(q) || (CATEGORY_LABELS[d.category] || '').toLowerCase().includes(q);
    }).sort((a, b) => INGREDIENTS[a].name.localeCompare(INGREDIENTS[b].name, 'pl'));
}

function ingredientRowHtml(id, pantry) {
    const def = INGREDIENTS[id];
    const products = getProductsForIngredient(id);
    const icon = CATEGORY_ICONS[def.category] || 'fa-jar';
    const u = unitLabel(def.pantryUnit);

    if (products.length === 0) {
        // Simple row — no products
        const qty = getPantryTotal(id, pantry);
        const qtyColor = qty > 0 ? '#6ee7b7' : '#6d6c67';
        const avatar = def.image
            ? `<img src="${esc(def.image)}" alt="" class="w-10 h-10 rounded-xl object-cover shrink-0">`
            : `<div class="w-10 h-10 rounded-xl flex items-center justify-center shrink-0" style="background:#2f2f2d;"><i class="fas ${icon} text-sm" style="color:#6d6c67;"></i></div>`;
        return `<button type="button" class="pv2-chip w-full flex items-center gap-3 px-3 py-2.5 rounded-xl text-left transition-colors active:scale-[0.99]" style="background:#393937;" data-id="${esc(id)}">
            ${avatar}
            <div class="flex-1 min-w-0">
                <div class="flex items-center justify-between gap-2">
                    <span class="text-[13px] font-semibold truncate" style="color:#ddd6ca;">${esc(def.name)}</span>
                    <span class="text-[13px] font-bold tabular-nums shrink-0" style="color:${qtyColor};">${qty > 0 ? Math.round(qty) : 0} ${esc(u)}</span>
                </div>
                <span class="text-[11px] block mt-0.5" style="color:#9b978f;">${esc(categoryLabel(def.category))}</span>
            </div>
        </button>`;
    }

    // Group — ingredient header + product rows
    const totalQty = getPantryTotal(id, pantry);
    const pantryItems = getPantryProducts(id, pantry);
    const totalColor = totalQty > 0 ? '#6ee7b7' : '#6d6c67';

    let html = `<div class="rounded-xl overflow-hidden" style="background:#393937;">`;
    // Group header
    html += `<div class="flex items-center gap-3 px-3 py-2">`;
    const avatar = def.image
        ? `<img src="${esc(def.image)}" alt="" class="w-8 h-8 rounded-lg object-cover shrink-0">`
        : `<div class="w-8 h-8 rounded-lg flex items-center justify-center shrink-0" style="background:#2f2f2d;"><i class="fas ${icon} text-xs" style="color:#6d6c67;"></i></div>`;
    html += avatar;
    html += `<div class="flex-1 min-w-0">
        <span class="text-[12px] font-semibold truncate block" style="color:#9b978f;">${esc(def.name)}</span>
    </div>`;
    html += `<span class="text-[12px] font-bold tabular-nums shrink-0" style="color:${totalColor};">${totalQty > 0 ? Math.round(totalQty) : 0} ${esc(u)}</span>`;
    html += `</div>`;

    // Product rows
    for (const p of products) {
        const pQty = pantryItems.find(i => i.productId === p.id)?.qty || 0;
        const pQtyColor = pQty > 0 ? '#ddd6ca' : '#6d6c67';
        const pAvatar = p.image
            ? `<img src="${esc(p.image)}" alt="" class="w-8 h-8 rounded-lg object-cover shrink-0">`
            : `<div class="w-8 h-8 rounded-lg flex items-center justify-center shrink-0" style="background:#2f2f2d;"><i class="fas ${icon} text-xs" style="color:#6d6c67;"></i></div>`;
        html += `<button type="button" class="pv2-product-row w-full flex items-center gap-3 px-3 py-2 text-left transition-colors active:scale-[0.99]" style="border-top:1px solid #444442;" data-id="${esc(id)}" data-product-id="${esc(p.id)}">
            ${pAvatar}
            <div class="flex-1 min-w-0">
                <span class="text-[13px] font-semibold truncate block" style="color:#ddd6ca;">${esc(p.name)}</span>
                <span class="text-[11px]" style="color:#9b978f;">${p.packLabel || ''}</span>
            </div>
            <span class="text-[13px] font-bold tabular-nums shrink-0" style="color:${pQtyColor};">${Math.round(pQty)} ${esc(u)}</span>
        </button>`;
    }
    html += `</div>`;
    return html;
}

function groupByCategory(ids) {
    /** @type {Map<string, string[]>} */
    const groups = new Map();
    for (const id of ids) {
        const cat = INGREDIENTS[id].category;
        if (!groups.has(cat)) groups.set(cat, []);
        groups.get(cat).push(id);
    }
    return [...groups.keys()]
        .sort((a, b) => categoryLabel(a).localeCompare(categoryLabel(b)))
        .map(cat => ({ cat, ids: groups.get(cat) }));
}

function renderBoard() {
    const root = document.getElementById('pantry-board');
    if (!root) return;

    const q = document.getElementById('pantry-search')?.value || '';
    const pantry = loadPantry();
    const allFiltered = getFilteredIds(q);
    const visible = showOnlyStock
        ? allFiltered.filter(id => getPantryTotal(id, pantry) > 0)
        : allFiltered;

    if (visible.length === 0) {
        root.innerHTML = showOnlyStock
            ? `<div class="flex flex-col items-center justify-center py-16 text-center">
                <div class="w-16 h-16 rounded-full flex items-center justify-center mb-4" style="background:#393937;">
                    <i class="fas fa-box-open text-2xl" style="color:#6d6c67;"></i>
                </div>
                <p class="text-sm font-semibold" style="color:#ddd6ca;">Nic na stanie</p>
                <p class="text-xs mt-1 max-w-[220px] leading-relaxed" style="color:#9b978f;">Wyłącz filtr, aby zobaczyć cały katalog produktów</p>
            </div>`
            : `<p class="text-sm text-center py-10" style="color:#9b978f;">Brak wyników — zmień wyszukiwanie lub filtry.</p>`;
        return;
    }

    const groups = groupByCategory(visible);
    let html = '';
    for (const { cat, ids } of groups) {
        const icon = CATEGORY_ICONS[cat] || 'fa-jar';
        html += `
        <div class="mb-4 last:mb-0">
            <p class="text-[10px] font-bold uppercase tracking-wider mb-2 px-0.5" style="color:#9b978f;">
                <i class="fas ${icon} text-[10px] mr-1"></i>${esc(categoryLabel(cat))}
            </p>
            <div class="space-y-2">${ids.map(id => ingredientRowHtml(id, pantry)).join('')}</div>
        </div>`;
    }

    root.innerHTML = html;

    root.querySelectorAll('.pv2-chip').forEach(btn => {
        btn.addEventListener('click', () => openIngredientCard(btn.dataset.id, null));
    });
    root.querySelectorAll('.pv2-product-row').forEach(btn => {
        btn.addEventListener('click', () => openIngredientCard(btn.dataset.id, btn.dataset.productId));
    });
}

/* ══════════════════════ STOCK TOGGLE ══════════════════════ */


/* ══════════════════════ INGREDIENT CARD ══════════════════════ */

let editingProductId = null;

function openIngredientCard(ingredientId, productId) {
    const def = INGREDIENTS[ingredientId];
    if (!def) return;
    editingId = ingredientId;
    editingProductId = productId || null;

    const product = editingProductId ? PRODUCTS[editingProductId] : null;
    const pantry = loadPantry();
    const u = unitLabel(def.pantryUnit);
    const icon = CATEGORY_ICONS[def.category] || 'fa-jar';

    // Hero image — product image > ingredient image > fallback
    const image = product?.image || def.image;
    const img = document.getElementById('pv2-card-img');
    const fallback = document.getElementById('pv2-card-fallback');
    const fallbackIcon = document.getElementById('pv2-card-fallback-icon');
    if (image) {
        img.src = image; img.alt = product?.name || def.name; img.classList.remove('hidden'); fallback.classList.add('hidden');
    } else {
        img.classList.add('hidden'); fallback.classList.remove('hidden');
        if (fallbackIcon) fallbackIcon.className = `fas ${icon} text-3xl`;
    }

    // Header — show product info or ingredient info
    document.getElementById('pv2-card-category').textContent = product?.brand || categoryLabel(def.category);
    document.getElementById('pv2-card-name').textContent = product?.name || def.name;
    const packEl = document.getElementById('pv2-card-pack');
    const packLabel = product?.packLabel || def.purchasePack?.label;
    if (packLabel) {
        packEl.textContent = packLabel;
        packEl.classList.remove('hidden');
    } else {
        packEl.classList.add('hidden');
    }

    // Nutrition — use product values if available
    renderCardNutrition(def, product);

    // Stock
    renderCardStock(ingredientId, editingProductId, pantry);

    // Shopping
    renderCardShop(ingredientId, editingProductId);

    // Show
    const overlay = document.getElementById('pv2-card-overlay');
    if (overlay) { overlay.classList.remove('hidden'); overlay.style.pointerEvents = 'auto'; }
}

function closeIngredientCard() {
    const overlay = document.getElementById('pv2-card-overlay');
    if (overlay) { overlay.classList.add('hidden'); overlay.style.pointerEvents = 'none'; }
    editingId = null;
    renderBoard();
}

function renderCardNutrition(def, product) {
    const wrap = document.getElementById('pv2-card-nutrition');
    if (!wrap) return;
    const n = product?.nutritionPer100g || def.nutritionPer100g;
    if (!n) { wrap.innerHTML = ''; return; }
    const label = def.pantryUnit === 'ml' ? 'na 100 ml' : 'na 100 g';
    wrap.innerHTML = `
        <p class="text-[9px] font-semibold uppercase tracking-wide mb-1.5" style="color:#9b978f;">${esc(label)}</p>
        <div class="grid grid-cols-4 gap-1.5">
            <div class="rounded-xl px-2 py-1.5 text-center" style="background:#393937;">
                <p class="text-[15px] font-bold tabular-nums leading-tight" style="color:#ddd6ca;">${n.kcal}</p>
                <p class="text-[9px] font-medium" style="color:#9b978f;">kcal</p>
            </div>
            <div class="rounded-xl px-2 py-1.5 text-center" style="background:#393937;">
                <p class="text-[15px] font-bold text-blue-400 tabular-nums leading-tight">${n.protein}g</p>
                <p class="text-[9px] font-medium" style="color:#9b978f;">białko</p>
            </div>
            <div class="rounded-xl px-2 py-1.5 text-center" style="background:#393937;">
                <p class="text-[15px] font-bold text-amber-400 tabular-nums leading-tight">${n.fat}g</p>
                <p class="text-[9px] font-medium" style="color:#9b978f;">tłuszcz</p>
            </div>
            <div class="rounded-xl px-2 py-1.5 text-center" style="background:#393937;">
                <p class="text-[15px] font-bold text-orange-400 tabular-nums leading-tight">${n.carbs}g</p>
                <p class="text-[9px] font-medium" style="color:#9b978f;">węgl.</p>
            </div>
        </div>`;
}

function renderCardStock(ingredientId, productId, pantry) {
    const wrap = document.getElementById('pv2-card-stock-section');
    if (!wrap) return;
    const def = INGREDIENTS[ingredientId];
    if (!def) return;
    const u = unitLabel(def.pantryUnit);

    let html = `<p class="text-[9px] font-semibold uppercase tracking-wide mb-1.5" style="color:#9b978f;">Zapas</p>`;

    if (productId) {
        // Product card — show just this product's stock
        const product = PRODUCTS[productId];
        const pantryItems = getPantryProducts(ingredientId, pantry);
        const qty = pantryItems.find(i => i.productId === productId)?.qty || 0;
        const step = product?.packSize || pantryQtyStep(ingredientId);
        html += `<div class="flex items-center justify-center gap-3 rounded-xl px-3 py-2" style="background:#393937;">
            <button type="button" class="pv2-stock-btn w-9 h-9 rounded-xl flex items-center justify-center active:scale-95" style="background:#2f2f2d; color:#d7d2c8;" data-pid="${esc(productId)}" data-step="${step}" data-dir="-1"><i class="fas fa-minus text-xs"></i></button>
            <span class="text-[17px] font-bold tabular-nums" style="color:#6ee7b7;">${Math.round(qty)} ${esc(u)}</span>
            <button type="button" class="pv2-stock-btn w-9 h-9 rounded-xl flex items-center justify-center active:scale-95" style="background:#2f2f2d; color:#d7d2c8;" data-pid="${esc(productId)}" data-step="${step}" data-dir="1"><i class="fas fa-plus text-xs"></i></button>
        </div>`;
    } else {
        // Generic ingredient — simple +/-
        const qty = getPantryTotal(ingredientId, pantry);
        const step = pantryQtyStep(ingredientId);
        html += `<div class="flex items-center justify-center gap-3 rounded-xl px-3 py-2" style="background:#393937;">
            <button type="button" class="pv2-stock-btn w-9 h-9 rounded-xl flex items-center justify-center active:scale-95" style="background:#2f2f2d; color:#d7d2c8;" data-pid="_generic" data-step="${step}" data-dir="-1"><i class="fas fa-minus text-xs"></i></button>
            <span class="text-[17px] font-bold tabular-nums" style="color:#6ee7b7;">${Math.round(qty)} ${esc(u)}</span>
            <button type="button" class="pv2-stock-btn w-9 h-9 rounded-xl flex items-center justify-center active:scale-95" style="background:#2f2f2d; color:#d7d2c8;" data-pid="_generic" data-step="${step}" data-dir="1"><i class="fas fa-plus text-xs"></i></button>
        </div>`;
    }

    wrap.innerHTML = html;

    wrap.querySelectorAll('.pv2-stock-btn').forEach(btn => {
        btn.addEventListener('click', () => {
            if (!editingId) return;
            const pid = btn.dataset.pid;
            const step = Number(btn.dataset.step) || 1;
            const dir = Number(btn.dataset.dir);
            const p = loadPantry();
            if (pid === '_generic') {
                const cur = getPantryTotal(editingId, p);
                setPantryQty(editingId, Math.max(0, cur + step * dir));
            } else {
                const items = getPantryProducts(editingId, p);
                const cur = items.find(i => i.productId === pid)?.qty || 0;
                setPantryProductQty(editingId, pid, Math.max(0, cur + step * dir));
            }
            renderCardStock(editingId, editingProductId, loadPantry());
        });
    });
}

function renderCardShop(ingredientId, productId) {
    const wrap = document.getElementById('pv2-card-shop-section');
    if (!wrap) return;
    const def = INGREDIENTS[ingredientId];
    if (!def) return;
    const u = unitLabel(def.pantryUnit);
    const product = productId ? PRODUCTS[productId] : null;
    const packSize = product?.packSize || def.purchasePack?.amount;
    const packLabel = product?.packLabel || def.purchasePack?.label;
    const usesPacks = Boolean(packSize && packSize > 0);
    const btnLabel = usesPacks ? `Dodaj na listę (${packLabel || `${packSize} ${u}`})` : 'Dodaj na listę';

    wrap.innerHTML = `
        <button type="button" id="pv2-card-add-list" class="w-full flex items-center justify-center gap-2 py-2.5 rounded-xl text-[13px] font-semibold transition-colors active:scale-[0.98]" style="background:#ddd6ca; color:#2d2e2b;">
            <i class="fas fa-cart-plus text-[11px]"></i>${esc(btnLabel)}
        </button>`;

    document.getElementById('pv2-card-add-list')?.addEventListener('click', () => {
        if (!editingId) return;
        const d = INGREDIENTS[editingId];
        if (!d) return;
        const uLabel = unitLabel(d.pantryUnit);
        const amt = usesPacks ? packSize : pantryQtyStep(editingId);
        const note = usesPacks ? (packLabel || `${packSize} ${uLabel}`) : undefined;

        // Use addOrMergeShoppingLines to include productId
        const line = {
            ingredientId: editingId,
            amount: amt,
            unit: uLabel,
            name: product?.name || d.name,
            category: d.category,
            sourceNote: note || 'Ze spiżarni',
        };
        if (productId) line.productId = productId;
        addOrMergeShoppingLines([line]);

        showAppToast(`Dodano ${product?.name || d.name} na listę.`);
        window.refreshShopping?.();
    });
}

function bindEditSheet() {
    document.getElementById('pv2-card-close')?.addEventListener('click', closeIngredientCard);
    document.getElementById('pv2-card-overlay')?.addEventListener('click', (e) => {
        if (e.target.id === 'pv2-card-overlay') closeIngredientCard();
    });
}

/* ══════════════════════ PUBLIC API ══════════════════════ */

export function refreshPantry() {
    renderCategoryChips();
    renderBoard();
}

export function setupPantry() {
    updateFilterBadge();
    renderBoard();
    bindEditSheet();

    document.getElementById('pantry-search')?.addEventListener('input', () => renderBoard());

    // Filter popup
    document.getElementById('pantry-filter-btn')?.addEventListener('click', () => {
        if (isFilterOpen()) closeFilterPopup(); else openFilterPopup();
    });

    document.getElementById('pantry-filter-overlay')?.addEventListener('click', (e) => {
        if (e.target.id === 'pantry-filter-overlay') closeFilterPopup();
    });

    document.getElementById('pantry-filter-clear')?.addEventListener('click', () => {
        selectedCategories.clear();
        showOnlyStock = false;
        renderFilterCategories();
        renderFilterStockCheck();
        updateFilterBadge();
        renderBoard();
    });

    document.getElementById('pantry-filter-categories')?.addEventListener('click', (e) => {
        const btn = e.target.closest('.pv2-filter-cat');
        if (!btn) return;
        const cat = btn.dataset.cat;
        if (selectedCategories.has(cat)) selectedCategories.delete(cat);
        else selectedCategories.add(cat);
        renderFilterCategories();
        updateFilterBadge();
        renderBoard();
    });

    document.getElementById('pantry-filter-stock')?.addEventListener('click', () => {
        showOnlyStock = !showOnlyStock;
        renderFilterStockCheck();
        updateFilterBadge();
        renderBoard();
    });

    window.refreshPantry = refreshPantry;
}
