---
import Layout from "../../../layouts/Layout.astro";
import type { Locale } from "../../../i18n/config";
import { useTranslations } from "../../../i18n/ui";

const lang: Locale = "ch";
const t = useTranslations(lang);
---
<Layout title="Warenchorb" description="Din Warenchorb bi Van's DIY & Bastelbedarf." lang={lang} path="/warenkorb/">
  <section class="section-tight">
    <div class="container">
      <span class="eyebrow">{t.cart.eyebrow}</span>
      <h1>{t.cart.title}</h1>
    </div>
  </section>

  <section class="section-tight">
    <div class="container">
      <div id="cart-empty" class="card" style="display:none;">
        <p>{t.cart.empty}</p>
        <a class="btn btn-primary" href="/ch/shop/">{t.common.browseShop}</a>
      </div>

      <div id="cart-content" class="cart-layout" style="display:none;">
        <div class="card cart-items" id="cart-items"></div>
        <aside class="card cart-summary">
          <h3>🧾 {t.cart.subtotal}</h3>
          <div class="summary-row"><span>{t.cart.subtotal}</span><span id="sum-subtotal">0,00 €</span></div>
          <div class="summary-row discount-row" id="discount-row" style="display:none;"><span>{t.cart.discount}</span><span id="sum-discount">-0,00 €</span></div>
          <div class="coupon-row">
            <label for="coupon-input">{t.cart.couponLabel}</label>
            <div class="coupon-input-group">
              <input type="text" id="coupon-input" placeholder={t.cart.couponPlaceholder} />
              <button type="button" id="coupon-apply" class="btn btn-outline btn-sm">{t.cart.couponApply}</button>
            </div>
            <p class="small" id="coupon-status"></p>
          </div>
          <div class="ship-country-row">
            <label for="cart-land">📦 {t.checkout.country}</label>
            <select id="cart-land">
              <option value="ch" selected>Schwiz</option>
              <option value="de">Dütschland</option>
              <option value="at">Öschterrych</option>
              <option value="lu">Luxemburg</option>
            </select>
          </div>
          <div class="summary-row"><span>{t.cart.shipping}</span><span id="sum-shipping">{t.cart.shippingCalculated}</span></div>
          <p class="free-shipping-badge" id="shipping-hint"></p>
          <hr class="divider" />
          <div class="summary-row total"><span>{t.cart.total}</span><span id="sum-total">0,00 €</span></div>
          <p class="small">{t.common.vatNote}</p>
          <a class="btn btn-primary btn-block" href="/ch/checkout/">{t.cart.toCheckout}</a>
        </aside>
      </div>
    </div>
  </section>
</Layout>

<script define:vars={{ freeShipFrom: 75, removeLabel: t.cart.remove, perItemLabel: t.cart.perItem, remainingTemplate: t.cart.remaining("__V__"), freeShippingText: t.cart.freeShipping, freeLabel: t.checkout.free, cartLang: lang, mengenrabattTemplate: t.cart.mengenrabatt("__P__"), couponInvalid: t.cart.couponInvalid, couponAppliedTemplate: t.cart.couponApplied("__C__"), couponRemoveLabel: t.cart.couponRemove }}>
  // WICHTIG: define:vars-Skripte laufen als IIFE, keine "import"-Anweisungen möglich.
  window.__cartVars = { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel };
</script>
<script type="module">
  import { getCart, updateQuantity, removeFromCart, cartTotal, appliedCoupon, couponDiscount, setCouponCode, clearCoupon } from "../../../scripts/cart";
  import { formatPrice } from "../../../i18n/format";
  import { getProduct, products } from "../../../data/products";
  import { berechneVersandkosten } from "../../../data/versand";
import { effektiverZeilenpreis, mengenrabattProzent } from "../../../data/rabatt";

  const { freeShipFrom, removeLabel, perItemLabel, remainingTemplate, freeShippingText, freeLabel, cartLang, mengenrabattTemplate, couponInvalid, couponAppliedTemplate, couponRemoveLabel } = window.__cartVars;
  const landSelect = document.getElementById("cart-land");

  function render() {
    const cart = getCart();
    const empty = document.getElementById("cart-empty");
    const content = document.getElementById("cart-content");
    const itemsEl = document.getElementById("cart-items");

    if (cart.length === 0) {
      empty.style.display = "block";
      content.style.display = "none";
      return;
    }
    empty.style.display = "none";
    content.style.display = "grid";

    itemsEl.innerHTML = cart.map((i) => {
      const produkt = getProduct(i.slug);
      const foto = produkt?.bilder?.[0];
      const thumb = foto
        ? `<img class="thumb product-photo" src="${foto}" alt="${i.name}" loading="lazy" />`
        : `<div class="img-placeholder thumb" role="img" aria-label="${i.name}"></div>`;
      const zeilenpreis = produkt ? effektiverZeilenpreis(produkt, i.menge) : i.menge * i.preis;
      const mengenProzent = produkt ? mengenrabattProzent(produkt, i.menge) : 0;
      const mengenBadge = mengenProzent > 0 ? `<div class="small mengenrabatt-badge">${mengenrabattTemplate.replace("__P__", mengenProzent)}</div>` : "";
      return `
      <div class="cart-item">
        ${thumb}
        <div class="info">
          <strong>${i.name}</strong>
          <div class="small">${formatPrice(zeilenpreis / i.menge, cartLang)} ${perItemLabel}</div>
          ${mengenBadge}
        </div>
        <div class="qty-controls">
          <button data-action="dec" data-slug="${i.slug}" aria-label="−">−</button>
          <span>${i.menge}</span>
          <button data-action="inc" data-slug="${i.slug}" aria-label="+">+</button>
        </div>
        <div class="line-total">${formatPrice(zeilenpreis, cartLang)}</div>
        <a href="#" class="remove" data-action="remove" data-slug="${i.slug}">✕ ${removeLabel}</a>
      </div>
    `;
    }).join("");

    const subtotal = cartTotal();
    const remaining = Math.max(0, freeShipFrom - subtotal);
    const shipping = berechneVersandkosten(landSelect.value, cart.map((i) => ({ slug: i.slug, preis: i.preis, menge: i.menge })), products);
    const coupon = appliedCoupon();
    const discount = couponDiscount(subtotal);
    const total = Math.max(0, subtotal - discount) + shipping;
    document.getElementById("sum-subtotal").textContent = formatPrice(subtotal, cartLang);
    document.getElementById("sum-shipping").textContent = shipping === 0 ? freeLabel : formatPrice(shipping, cartLang);
    document.getElementById("sum-total").textContent = formatPrice(total, cartLang);
    document.getElementById("shipping-hint").textContent =
      remaining > 0 ? remainingTemplate.replace("__V__", formatPrice(remaining, cartLang)) : `🩵 ${freeShippingText}`;

    const discountRow = document.getElementById("discount-row");
    const couponStatus = document.getElementById("coupon-status");
    const couponInput = document.getElementById("coupon-input");
    if (coupon && discount > 0) {
      discountRow.style.display = "flex";
      document.getElementById("sum-discount").textContent = "-" + formatPrice(discount, cartLang);
      couponStatus.innerHTML = `✅ ${couponAppliedTemplate.replace("__C__", coupon.code)} <a href="#" id="coupon-clear">✕ ${couponRemoveLabel}</a>`;
      couponInput.value = coupon.code;
      const clearLink = document.getElementById("coupon-clear");
      if (clearLink) clearLink.addEventListener("click", (e) => { e.preventDefault(); clearCoupon(); render(); });
    } else {
      discountRow.style.display = "none";
      couponStatus.textContent = couponInput.dataset.invalid === "1" ? couponInvalid : "";
    }

    itemsEl.querySelectorAll("button, a.remove").forEach((el) => {
      el.addEventListener("click", (e) => {
        e.preventDefault();
        const target = e.currentTarget;
        const slug = target.dataset.slug;
        const action = target.dataset.action;
        const item = getCart().find((i) => i.slug === slug);
        if (!item) return;
        if (action === "inc") updateQuantity(slug, item.menge + 1);
        if (action === "dec") updateQuantity(slug, item.menge - 1);
        if (action === "remove") removeFromCart(slug);
        render();
      });
    });
  }

  document.getElementById("coupon-apply").addEventListener("click", () => {
    const input = document.getElementById("coupon-input");
    const code = input.value.trim();
    if (!code) { clearCoupon(); render(); return; }
    setCouponCode(code);
    input.dataset.invalid = appliedCoupon() ? "0" : "1";
    render();
  });

  render();
  window.addEventListener("cart:changed", render);
  landSelect.addEventListener("change", render);
</script>