// Title search runs entirely in the browser: the full list is already in the
// DOM, so filtering it needs no request.
(function () {
  function applyFilter() {
    var box = document.getElementById("search");
    if (!box) return;
    var needle = box.value.trim().toLowerCase();
    document.querySelectorAll(".card").forEach(function (card) {
      var title = (card.dataset.title || "").toLowerCase();
      card.hidden = needle !== "" && title.indexOf(needle) === -1;
    });
  }

  document.addEventListener("input", function (e) {
    if (e.target && e.target.id === "search") applyFilter();
  });

  // htmx replaces the list on a tab switch, so re-apply to the new cards.
  document.body.addEventListener("htmx:afterSwap", applyFilter);
})();

function setActiveTab(el) {
  el.parentElement.querySelectorAll("[role=tab]").forEach(function (t) {
    t.classList.toggle("active", t === el);
  });
}

// The chapter-edit form and the delete confirm row are the two per-card
// disclosure panels; only one makes sense open at a time.
function closeCardPanels(key) {
  var form = document.getElementById("chapter-form-" + key);
  var confirm = document.getElementById("confirm-row-" + key);
  if (form) form.hidden = true;
  if (confirm) confirm.hidden = true;
}

function toggleChapterForm(key) {
  var form = document.getElementById("chapter-form-" + key);
  if (!form) return;
  var opening = form.hidden;
  closeCardPanels(key);
  form.hidden = !opening;
  if (!form.hidden) form.querySelector("input").focus();
}

function toggleConfirmRow(key) {
  var row = document.getElementById("confirm-row-" + key);
  if (!row) return;
  var opening = row.hidden;
  closeCardPanels(key);
  row.hidden = !opening;
}

// A failed favourite/chapter/delete request leaves the card in place (htmx
// does not swap on a non-2xx response) but otherwise gives no sign anything
// went wrong. Surface it inline instead of leaving the tap looking ignored.
(function () {
  function showError(elt, message) {
    var card = elt.closest(".card");
    var slot = card && card.querySelector(".error-inline");
    if (!slot) return;
    slot.textContent = message;
    slot.hidden = false;
    clearTimeout(slot._hideTimer);
    slot._hideTimer = setTimeout(function () {
      slot.hidden = true;
    }, 5000);
  }

  document.body.addEventListener("htmx:responseError", function (e) {
    showError(e.detail.elt, "Couldn't save — try again.");
  });
  document.body.addEventListener("htmx:sendError", function (e) {
    showError(e.detail.elt, "No connection — try again.");
  });
})();