var editingSpecialId = null;

function openSpecialCakeOverlay() {
  editingSpecialId = null;
  document.getElementById("sc-overlay-title").textContent = "Dodaj tort specjalny";
  document.getElementById("sc-name").value = "";
  document.getElementById("sc-price").value = "";
  document.getElementById("sc-size").value = "";
  document.getElementById("sc-shape").value = "";
  document.getElementById("sc-flavour").value = "";
  document.getElementById("sc-notes").value = "";
  document.getElementById("sc-new-tag").value = "";
  var cbs = document.querySelectorAll(".sc-tag-cb");
  for (var i = 0; i < cbs.length; i++) cbs[i].checked = false;
  document.getElementById("sc-overlay").classList.add("open");
  document.getElementById("sc-name").focus();
}

function closeSpecialCakeOverlay() {
  document.getElementById("sc-overlay").classList.remove("open");
  editingSpecialId = null;
}

function getOverlayFormData() {
  return {
    name: document.getElementById("sc-name").value.trim(),
    price: document.getElementById("sc-price").value,
    size: document.getElementById("sc-size").value.trim(),
    shape: document.getElementById("sc-shape").value,
    flavour: document.getElementById("sc-flavour").value.trim(),
    notes: document.getElementById("sc-notes").value.trim(),
    tagIds: (function() {
      var ids = [];
      var cbs = document.querySelectorAll(".sc-tag-cb:checked");
      for (var i = 0; i < cbs.length; i++) ids.push(cbs[i].value);
      return ids;
    })(),
    tagNames: (function() {
      var names = [];
      var cbs = document.querySelectorAll(".sc-tag-cb:checked");
      for (var i = 0; i < cbs.length; i++)
        names.push(cbs[i].closest(".tag-chip").textContent.trim());
      return names;
    })(),
    newTag: document.getElementById("sc-new-tag").value.trim()
  };
}

function buildSpecialCakeHTML(d) {
  var parts = [];
  if (d.size) parts.push(d.size);
  if (d.flavour) parts.push(d.flavour);
  if (d.shape === "round") parts.push("okragly");
  else if (d.shape === "square") parts.push("kwadrat");
  if (d.notes) parts.push("notatka: " + d.notes);
  var detail = parts.length ? parts.join(", ") : "";
  var tagHtml = d.tagNames.length > 0 || d.newTag ? '<div style="margin-top:0.25rem;display:flex;flex-wrap:wrap;gap:0.125rem">' : "";
  for (var i = 0; i < d.tagNames.length; i++)
    tagHtml += '<span class="tag-chip" style="font-size:0.625rem;padding:0.125rem 0.375rem">' + d.tagNames[i] + "</span>";
  if (d.newTag)
    tagHtml += '<span class="tag-chip" style="font-size:0.625rem;padding:0.125rem 0.375rem">' + d.newTag + "</span>";
  if (d.tagNames.length > 0 || d.newTag) tagHtml += "</div>";
  var priceVal = Number(d.price).toFixed(2);
  var tagIdsStr = d.tagIds.join(",");
  var html =
    '<div style="flex:1;min-width:0;padding-right:0.5rem">' +
    '<div class="name">' + d.name + '</div>' +
    '<div class="detail">' + detail + '</div>' +
    tagHtml +
    '</div>' +
    '<div class="price">' + priceVal + ' PLN</div>' +
    '<div style="display:flex;flex-direction:column;gap:0.125rem">' +
    '<button type="button" class="action-btn" onclick="editSpecialCake(this)" title="Edytuj">' +
    '<span class="material-symbols-outlined" style="font-size:1rem">edit</span></button>' +
    '<button type="button" class="remove" onclick="removeSpecialCake(this)" title="Usuń">' +
    '<span class="material-symbols-outlined" style="font-size:1rem">close</span></button>' +
    '</div>' +
    '<input type="hidden" name="special_name[]" value="' + d.name + '">' +
    '<input type="hidden" name="special_price[]" value="' + d.price + '">' +
    '<input type="hidden" name="special_size[]" value="' + d.size + '">' +
    '<input type="hidden" name="special_shape[]" value="' + d.shape + '">' +
    '<input type="hidden" name="special_flavour[]" value="' + d.flavour + '">' +
    '<input type="hidden" name="special_notes[]" value="' + d.notes + '">' +
    '<input type="hidden" name="special_tags[]" value="' + tagIdsStr + '">';
  if (d.newTag)
    html += '<input type="hidden" name="special_new_tag[]" value="' + d.newTag + '">';
  return html;
}

function saveSpecialCake() {
  var d = getOverlayFormData();
  if (!d.name) return;
  if (editingSpecialId) {
    var item = document.querySelector('#basket-items li[data-special-id="' + editingSpecialId + '"]');
    if (item) {
      item.innerHTML = buildSpecialCakeHTML(d);
    }
  } else {
    d.id = Date.now();
    var item = document.createElement("li");
    item.setAttribute("data-special-id", d.id);
    item.innerHTML = buildSpecialCakeHTML(d);
    document.getElementById("basket-items").appendChild(item);
  }
  closeSpecialCakeOverlay();
  updateTotals();
}

function editSpecialCake(btn) {
  var item = btn.closest("li");
  var id = item.getAttribute("data-special-id");
  editingSpecialId = id;
  document.getElementById("sc-overlay-title").textContent = "Edytuj tort specjalny";
  var hidden = item.querySelectorAll('input[type="hidden"]');
  var vals = {};
  for (var i = 0; i < hidden.length; i++) {
    var name = hidden[i].getAttribute("name");
    vals[name] = hidden[i].value;
  }
  document.getElementById("sc-name").value = vals["special_name[]"] || "";
  document.getElementById("sc-price").value = vals["special_price[]"] || "";
  document.getElementById("sc-size").value = vals["special_size[]"] || "";
  document.getElementById("sc-shape").value = vals["special_shape[]"] || "";
  document.getElementById("sc-flavour").value = vals["special_flavour[]"] || "";
  document.getElementById("sc-notes").value = vals["special_notes[]"] || "";
  var currentTagIds = (vals["special_tags[]"] || "").split(",").filter(function(x) { return x; });
  document.getElementById("sc-new-tag").value = "";
  var cbs = document.querySelectorAll(".sc-tag-cb");
  for (var i = 0; i < cbs.length; i++) {
    cbs[i].checked = currentTagIds.indexOf(cbs[i].value) >= 0;
  }
  document.getElementById("sc-overlay").classList.add("open");
  document.getElementById("sc-name").focus();
}

function removeSpecialCake(btn) {
  var item = btn.closest("li");
  item.remove();
  updateTotals();
}

function changeCake(id, name, price, delta) {
  var input = document.querySelector('[name="cake[' + id + ']"]');
  if (input != null) {
    var qty = Number(input.value) + delta;
    if (qty <= 0) {
      var item = input.closest("li");
      if (item) item.remove();
      updateTotals();
      updateCatalogueQty(id, 0);
      return;
    }
    input.value = qty;
    var item = input.closest("li");
    item.querySelector(".qty").innerText = qty;
    item.querySelector(".price").innerText = price * qty + " PLN";
    updateTotals();
    updateCatalogueQty(id, qty);
    return;
  }
  if (delta <= 0) return;
  var item = document.createElement("li");
  item.setAttribute("data-cake-id", id);
  item.innerHTML =
    '<div style="flex:1;min-width:0;padding-right:0.5rem">' +
    '<div class="name">' +
    name +
    "</div>" +
    '<div class="detail">' +
    price +
    ' PLN × <span class="qty">1</span></div>' +
    "</div>" +
    '<div class="price">' +
    price +
    " PLN</div>" +
    '<button type="button" class="remove" onclick="removeCake(this)">' +
    '<span class="material-symbols-outlined">close</span>' +
    "</button>" +
    '<input type="hidden" name="cake[' +
    id +
    ']" value="1">';
  document.getElementById("basket-items").appendChild(item);
  updateTotals();
  updateCatalogueQty(id, 1);
}

function removeCake(btn) {
  var item = btn.closest("li");
  var id = item.getAttribute("data-cake-id");
  item.remove();
  updateTotals();
  updateCatalogueQty(id, 0);
}

var subtotal = 0;

function updatePrepaid() {
  var paid = Number(document.querySelector('[name="paid"]')?.value || 0);
  document.getElementById("paid-amount").innerText = paid.toFixed(2) + " PLN";
  document.getElementById("total-price").innerText = (subtotal - paid).toFixed(2) + " PLN";
}

function updateTotals() {
  subtotal = 0;
  var items = document.querySelectorAll("#basket-items li");
  items.forEach(function (item) {
    var priceText = item.querySelector(".price").innerText;
    var price = Number(priceText.split(" ")[0]);
    if (item.hasAttribute("data-special-id")) {
      subtotal += price;
    } else {
      var qty = Number(item.querySelector(".qty").innerText);
      subtotal += price * qty;
    }
  });
  document.getElementById("subtotal-price").innerText = subtotal.toFixed(2) + " PLN";
  updatePrepaid();
}

function updateCatalogueQty(id, qty) {
  var el = document.getElementById("qty-" + id);
  if (el) el.innerText = qty;
}

var activeCatalogueTags = [];

function toggleCatalogueTagFilter(btn) {
  var tag = btn.getAttribute("data-tag");
  var idx = activeCatalogueTags.indexOf(tag);
  if (idx >= 0) {
    activeCatalogueTags.splice(idx, 1);
    btn.classList.remove("active");
  } else {
    activeCatalogueTags.push(tag);
    btn.classList.add("active");
  }
  applyCatalogueFilters();
}

function getCatalogueTextQuery() {
  var input = document.querySelector(
    '#catalogue-grid').closest('.card').querySelector('input[type="text"]'
  );
  return input ? input.value.toLowerCase() : "";
}

function applyCatalogueFilters() {
  var query = getCatalogueTextQuery();
  var items = document.querySelectorAll("#catalogue-grid > li");
  items.forEach(function (item) {
    var name = item.getAttribute("data-name").toLowerCase();
    var matchesText = name.includes(query);
    var matchesTags = true;
    if (activeCatalogueTags.length > 0) {
      var itemTags = (item.getAttribute("data-tags") || "").split(",");
      for (var i = 0; i < activeCatalogueTags.length; i++) {
        if (itemTags.indexOf(activeCatalogueTags[i]) < 0) {
          matchesTags = false;
          break;
        }
      }
    }
    item.style.display = matchesText && matchesTags ? "" : "none";
  });
}

function filterCatalogue(input) {
  applyCatalogueFilters();
}

function confirmBlockedDate(form) {
  var date = form.querySelector('[name="date"]').value;
  var blocked = JSON.parse(form.getAttribute("data-blocked-dates") || "[]");
  var hasSpecial = form.querySelector('[name="special_name[]"]');
  if (hasSpecial && blocked.indexOf(date) >= 0) {
    return confirm("Data " + date + " jest zablokowana dla zamówień z tortami specjalnymi. Czy na pewno chcesz kontynuować?");
  }
  return true;
}