(function () {
  var hangersInitCallbacks = [];

  function onHangersInit(callback) {
    hangersInitCallbacks[hangersInitCallbacks.length] = callback;
  }

  function hangersInit() {
    for (var i = 0; i < hangersInitCallbacks.length; i++) {
      try {
        hangersInitCallbacks[i]();
      } catch (error) {
        console.error(error);
      }
    }
  }

  /*

    Hanger groups

  */

  var hangerGroups = [];

  $(".closet-hangers-group").each(function () {
    var el = $(this);
    var lists = [];

    el.find("div.closet-list").each(function () {
      var el = $(this);
      var id = el.attr("data-id");
      if (id) {
        lists[lists.length] = {
          id: parseInt(id, 10),
          label: el.find("h4").text(),
        };
      }
    });

    hangerGroups[hangerGroups.length] = {
      label: el.find("h3").text(),
      lists: lists,
      owned: el.attr("data-owned") == "true",
    };
  });

  $(".closet-hangers-group span.toggle").live("click", function () {
    $(this).closest(".closet-hangers-group").toggleClass("hidden");
  });

  var hangersElQuery = "#closet-hangers";
  var hangersEl = $(hangersElQuery);

  /*

    Compare with Your Items

  */

  $("#toggle-compare").click(function () {
    hangersEl.toggleClass("comparing");
  });

  // Read the item IDs of trade matches from the meta tags.
  const ownedIds =
    document
      .querySelector("meta[name=trade-matches-owns]")
      ?.getAttribute("value")
      ?.split(",") ?? [];
  const wantedIds =
    document
      .querySelector("meta[name=trade-matches-wants]")
      ?.getAttribute("value")
      ?.split(",") ?? [];

  // Apply the `user-owns` and `user-wants` classes to the relevant entries.
  // This both provides immediate visual feedback, and sets up "Compare with
  // Your Items" to toggle to just them!
  //
  // NOTE: The motivation here is caching: this allows us to share a cache of
  // the closet list contents across all users, without `user-owns` or
  // `user-wants` classes for one specific user getting cached and reused.
  const hangerEls = document.querySelectorAll("#closet-hangers .object");
  for (const hangerEl of hangerEls) {
    const itemId = hangerEl.getAttribute("data-item-id");
    if (ownedIds.includes(itemId)) {
      hangerEl.classList.add("user-owns");
    }
    if (wantedIds.includes(itemId)) {
      hangerEl.classList.add("user-wants");
    }
  }

  /*

    Hanger forms

  */

  var body = $(document.body).addClass("js");
  if (!body.hasClass("current-user")) return false;

  // When we get hangers HTML, add the controls. We do this in JS rather than
  // in the HTML for caching, since otherwise the requests can take forever.
  // If there were another way to add hangers, then we'd have to worry about
  // that, but, right now, the only way to create a new hanger from this page
  // is through the autocompleter, which reinitializes anyway. Geez, this thing
  // is begging for a rewrite, but today we're here for performance.
  $("#closet-hanger-update-tmpl").template("updateFormTmpl");
  $("#closet-hanger-destroy-tmpl").template("destroyFormTmpl");
  onHangersInit(function () {
    // Super-lame hack to get the user ID from where it already is :/
    var currentUserId = itemsSearchForm.data("current-user-id");
    $("#closet-hangers .closet-hangers-group").each(function () {
      var groupEl = $(this);
      var owned = groupEl.data("owned");

      groupEl.find("div.closet-list").each(function () {
        var listEl = $(this);
        var listId = listEl.data("id");

        listEl.find("div.object").each(function () {
          var hangerEl = $(this);
          var hangerId = hangerEl.data("id");
          var quantityEl = hangerEl.find("div.quantity");
          var quantity = hangerEl.data("quantity");

          // Ooh, this part is weird. We only want the name to be linked, so
          // lift everything else out.
          var checkboxId = "hanger-selected-" + hangerId;
          var label = $("<label />", { for: checkboxId });
          var link = hangerEl.children("a");
          link.children(":not(.name)").detach().appendTo(label);
          link.detach().appendTo(label);
          var checkbox = $("<input />", {
            type: "checkbox",
            id: checkboxId,
          }).appendTo(hangerEl);
          label.appendTo(hangerEl);

          // I don't usually like to _blank things, but it's too easy to click
          // the text when you didn't mean to and lose your selection work.
          link.attr("target", "_blank");

          $.tmpl("updateFormTmpl", {
            user_id: currentUserId,
            closet_hanger_id: hangerId,
            quantity: quantity,
            list_id: listId,
            owned: owned,
          }).appendTo(quantityEl);

          $.tmpl("destroyFormTmpl", {
            user_id: currentUserId,
            closet_hanger_id: hangerId,
          }).appendTo(hangerEl);
        });
      });
    });
  });

  $.fn.liveDraggable = function (opts) {
    this.live("mouseover", function () {
      if (!$(this).data("init")) {
        $(this).data("init", true).draggable(opts);
      }
    });
  };

  $.fn.disableForms = function () {
    return this.data("formsDisabled", true)
      .find("input")
      .attr("disabled", "disabled")
      .end();
  };

  $.fn.enableForms = function () {
    return this.data("formsDisabled", false)
      .find("input")
      .removeAttr("disabled")
      .end();
  };

  $.fn.hasChanged = function () {
    return this.attr("data-previous-value") != this.val();
  };

  $.fn.revertValue = function () {
    return this.each(function () {
      var el = $(this);
      el.val(el.attr("data-previous-value"));
    });
  };

  $.fn.storeValue = function () {
    return this.each(function () {
      var el = $(this);
      el.attr("data-previous-value", el.val());
    });
  };

  $.fn.insertIntoSortedList = function (list, compare) {
    var newChild = this,
      inserted = false;
    list.children().each(function () {
      if (compare(newChild, $(this)) < 1) {
        newChild.insertBefore(this);
        inserted = true;
        return false;
      }
    });
    if (!inserted) newChild.appendTo(list);
    return this;
  };

  function handleSaveError(xhr, action) {
    try {
      var data = $.parseJSON(xhr.responseText);
    } catch (e) {
      var data = {};
    }

    if (typeof data.errors != "undefined") {
      $.jGrowl("Error " + action + ": " + data.errors.join(", "));
    } else {
      $.jGrowl("We had trouble " + action + " just now. Try again?");
    }
  }

  function objectRemoved(objectWrapper) {
    objectWrapper.hide(250, function () {
      objectWrapper.remove();
      updateBulkActions();
    });
  }

  function compareItemsByName(a, b) {
    return a.find("span.name").text().localeCompare(b.find("span.name").text());
  }

  function findList(owned, id, item) {
    if (id) {
      return $("#closet-list-" + id);
    } else {
      return $(
        ".closet-hangers-group[data-owned=" +
          owned +
          "] div.closet-list.unlisted",
      );
    }
  }

  function updateListHangersCount(el) {
    el.attr("data-hangers-count", el.find("div.object").length);
  }

  function moveItemToList(item, owned, listId) {
    var newList = findList(owned, listId, item);
    var oldList = item.closest("div.closet-list");
    var hangersWrapper = newList.find("div.closet-list-hangers");
    item.insertIntoSortedList(hangersWrapper, compareItemsByName);
    updateListHangersCount(oldList);
    updateListHangersCount(newList);
  }

  function submitUpdateForm(form) {
    if (form.data("loading")) return false;
    var quantityEl = form.children("input[name=closet_hanger[quantity]]");
    var ownedEl = form.children("input[name=closet_hanger[owned]]");
    var listEl = form.children("input[name=closet_hanger[list_id]]");
    var listChanged = ownedEl.hasChanged() || listEl.hasChanged();
    if (listChanged || quantityEl.hasChanged()) {
      var objectWrapper = form.closest(".object").addClass("loading");
      var newQuantity = quantityEl.val();
      var quantitySpan = objectWrapper.find(".quantity span").text(newQuantity);
      objectWrapper.attr("data-quantity", newQuantity);
      var data = form.serialize(); // get data before disabling inputs
      objectWrapper.disableForms();
      form.data("loading", true);
      if (listChanged)
        moveItemToList(objectWrapper, ownedEl.val(), listEl.val());
      $.ajax({
        url: form.attr("action") + ".json",
        type: "post",
        data: data,
        dataType: "json",
        complete: function (data) {
          if (quantityEl.val() == 0) {
            objectRemoved(objectWrapper);
          } else {
            objectWrapper.removeClass("loading").enableForms();
          }
          form.data("loading", false);
        },
        success: function () {
          // Now that the move was successful, let's merge it with any
          // conflicting hangers
          var id = objectWrapper.attr("data-item-id");
          var conflictingHanger = findList(
            ownedEl.val(),
            listEl.val(),
            objectWrapper,
          )
            .find("div[data-item-id=" + id + "]")
            .not(objectWrapper);
          if (conflictingHanger.length) {
            var conflictingQuantity = parseInt(
              conflictingHanger.attr("data-quantity"),
              10,
            );

            var currentQuantity = parseInt(newQuantity, 10);

            var mergedQuantity = conflictingQuantity + currentQuantity;

            quantitySpan.text(mergedQuantity);
            quantityEl.val(mergedQuantity);
            objectWrapper.attr("data-quantity", mergedQuantity);

            conflictingHanger.remove();
          }

          quantityEl.storeValue();
          ownedEl.storeValue();
          listEl.storeValue();

          updateBulkActions();
        },
        error: function (xhr) {
          quantityEl.revertValue();
          ownedEl.revertValue();
          listEl.revertValue();
          if (listChanged)
            moveItemToList(objectWrapper, ownedEl.val(), listEl.val());
          quantitySpan.text(quantityEl.val());

          handleSaveError(xhr, "updating the quantity");
        },
      });
    }
  }

  $(hangersElQuery + " form.closet-hanger-update").live("submit", function (e) {
    e.preventDefault();
    submitUpdateForm($(this));
  });

  function editableInputs() {
    return $(hangersElQuery).find(
      "input[name=closet_hanger[quantity]], " +
        "input[name=closet_hanger[owned]], " +
        "input[name=closet_hanger[list_id]]",
    );
  }

  $(hangersElQuery + "input[name=closet_hanger[quantity]]")
    .live("change", function () {
      submitUpdateForm($(this).parent());
    })
    .storeValue();

  onHangersInit(function () {
    editableInputs().storeValue();
  });

  $(hangersElQuery + " div.object")
    .live("mouseleave", function () {
      submitUpdateForm($(this).find("form.closet-hanger-update"));
    })
    .liveDraggable({
      appendTo: "#closet-hangers",
      distance: 20,
      helper: "clone",
      revert: "invalid",
    });

  $(hangersElQuery + " form.closet-hanger-destroy").live(
    "submit",
    function (e) {
      e.preventDefault();
      var form = $(this);
      var button = form.children("input[type=submit]").val("Removing…");
      var objectWrapper = form.closest(".object").addClass("loading");
      var data = form.serialize(); // get data before disabling inputs
      objectWrapper.addClass("loading").disableForms();
      $.ajax({
        url: form.attr("action") + ".json",
        type: "post",
        data: data,
        dataType: "json",
        complete: function () {
          button.val("Remove");
        },
        success: function () {
          objectRemoved(objectWrapper);
        },
        error: function () {
          objectWrapper.removeClass("loading").enableForms();
          $.jGrowl("Error removing item. Try again?");
        },
      });
    },
  );

  $(hangersElQuery + " .select-all").live("click", function (e) {
    var checkboxes = $(this)
      .closest(".closet-list")
      .find(".object input[type=checkbox]");

    var allChecked = true;
    checkboxes.each(function () {
      if (!this.checked) {
        allChecked = false;
        return false;
      }
    });

    checkboxes.attr("checked", !allChecked);

    updateBulkActions(); // setting the checked prop doesn't fire change events
  });

  function getCheckboxes() {
    return $(hangersElQuery + " input[type=checkbox]");
  }

  function getCheckedIds() {
    var checkedIds = [];
    getCheckboxes()
      .filter(":checked")
      .each(function () {
        if (this.checked) checkedIds.push(this.id);
      });
    return checkedIds;
  }

  getCheckboxes().live("change", updateBulkActions);

  function updateBulkActions() {
    var checkedCount = getCheckboxes().filter(":checked").length;
    $(".bulk-actions").attr("data-target-count", checkedCount);
    $(".bulk-actions-target-count").text(checkedCount);
  }

  $(".bulk-actions-move-all").bind("submit", function (e) {
    // TODO: DRY
    e.preventDefault();
    var form = $(this);
    var data = form.serializeArray();
    data.push({
      name: "return_to",
      value: window.location.pathname + window.location.search,
    });

    var checkedBoxes = getCheckboxes().filter(":checked");
    checkedBoxes.each(function () {
      data.push({
        name: "ids[]",
        value: $(this).closest(".object").attr("data-id"),
      });
    });

    $.ajax({
      url: form.attr("action"),
      type: form.attr("method"),
      data: data,
      success: function (html) {
        var doc = $(html);
        hangersEl.html(doc.find("#closet-hangers").html());
        hangersInit();
        updateBulkActions(); // don't want to maintain checked; deselect em all
        doc
          .find(".flash")
          .hide()
          .insertBefore(hangersEl)
          .show(500)
          .delay(5000)
          .hide(250);
        itemsSearchField.val("");
      },
      error: function (xhr) {
        handleSaveError(xhr, "moving these items");
      },
    });
  });

  $(".bulk-actions-remove-all").bind("submit", function (e) {
    e.preventDefault();
    var form = $(this);
    var hangerIds = [];
    var checkedBoxes = getCheckboxes().filter(":checked");
    var hangerEls = $();
    checkedBoxes.each(function () {
      hangerEls = hangerEls.add($(this).closest(".object"));
    });
    hangerEls.each(function () {
      hangerIds.push($(this).attr("data-id"));
    });
    $.ajax({
      url: form.attr("action") + ".json?" + $.param({ ids: hangerIds }),
      type: "delete",
      dataType: "json",
      success: function () {
        objectRemoved(hangerEls);
      },
      error: function () {
        $.jGrowl("Error removing items. Try again?");
      },
    });
  });

  $(".bulk-actions-deselect-all").bind("click", function (e) {
    getCheckboxes().filter(":checked").attr("checked", false);
    updateBulkActions();
  });

  function maintainCheckboxes(fn) {
    var checkedIds = getCheckedIds();

    fn();

    checkedIds.forEach(function (id) {
      document.getElementById(id).checked = true;
    });
    updateBulkActions();
  }

  /*

    Search, autocomplete

  */

  var itemsSearchForm = $("#closet-hangers-items-search[data-current-user-id]");
  var itemsSearchField = itemsSearchForm.children("input[name=q]");

  itemsSearchField.autocomplete({
    select: function (e, ui) {
      if (ui.item.is_item) {
        // Let the autocompleter finish up this search before starting a new one
        setTimeout(function () {
          itemsSearchField.autocomplete("search", ui.item);
        }, 0);
      } else {
        var item = ui.item.item;
        var group = ui.item.group;

        itemsSearchField.addClass("loading");

        var closetHanger = {
          owned: group.owned,
          list_id: ui.item.list ? ui.item.list.id : "",
        };

        if (!item.hasHanger) closetHanger.quantity = 1;

        $.ajax({
          url:
            "/user/" +
            itemsSearchForm.data("current-user-id") +
            "/items/" +
            item.id +
            "/closet_hangers",
          type: "post",
          data: {
            closet_hanger: closetHanger,
            return_to: window.location.pathname + window.location.search,
          },
          complete: function () {
            itemsSearchField.removeClass("loading");
          },
          success: function (html) {
            var doc = $(html);
            maintainCheckboxes(function () {
              hangersEl.html(doc.find("#closet-hangers").html());
              hangersInit();
            });
            doc
              .find(".flash")
              .hide()
              .insertBefore(hangersEl)
              .show(500)
              .delay(5000)
              .hide(250);
            itemsSearchField.val("");
          },
          error: function (xhr) {
            handleSaveError(xhr, "adding the item");
          },
        });
      }
    },
    source: function (input, callback) {
      if (typeof input.term == "string") {
        // user-typed query
        $.getJSON("/items.json?q=" + input.term, function (data) {
          var output = [];
          var items = data.items;
          for (var i in items) {
            items[i].label = items[i].name;
            items[i].is_item = true;
            output[output.length] = items[i];
          }
          callback(output);
        });
      } else {
        // item was chosen, now choose a group to insert
        var groupInserts = [],
          group;
        var item = input.term,
          itemEl,
          occupiedGroups,
          hasHanger;
        for (var i in hangerGroups) {
          group = hangerGroups[i];
          itemEl = $(
            ".closet-hangers-group[data-owned=" +
              group.owned +
              "] div.object[data-item-id=" +
              item.id +
              "]",
          );
          occupiedGroups = itemEl.closest(".closet-list");
          hasHanger = occupiedGroups.filter(".unlisted").length > 0;

          groupInserts[groupInserts.length] = {
            group: group,
            item: item,
            label: item.label,
            hasHanger: hasHanger,
          };

          for (var i = 0; i < group.lists.length; i++) {
            hasHanger =
              occupiedGroups.filter("[data-id=" + group.lists[i].id + "]")
                .length > 0;
            groupInserts[groupInserts.length] = {
              group: group,
              item: item,
              label: item.label,
              list: group.lists[i],
              hasHanger: hasHanger,
            };
          }
        }
        callback(groupInserts);
      }
    },
  });

  var autocompleter = itemsSearchField.data("autocomplete");

  autocompleter._renderItem = function (ul, item) {
    var li = $("<li></li>").data("item.autocomplete", item);
    if (item.is_item) {
      // these are items from the server
      $("#autocomplete-item-tmpl").tmpl({ item_name: item.label }).appendTo(li);
    } else if (item.list) {
      // these are list inserts
      var listName = item.list.label;
      if (item.hasHanger) {
        $("#autocomplete-already-in-collection-tmpl")
          .tmpl({ collection_name: listName })
          .appendTo(li);
      } else {
        $("#autocomplete-add-to-list-tmpl")
          .tmpl({ list_name: listName })
          .appendTo(li);
      }
      li.addClass("closet-list-autocomplete-item");
    } else {
      // these are group inserts
      var groupName = item.group.label;
      if (!item.hasHanger) {
        $("#autocomplete-add-to-group-tmpl")
          .tmpl({ group_name: groupName.replace(/\s+$/, "") })
          .appendTo(li);
      } else {
        $("#autocomplete-already-in-collection-tmpl")
          .tmpl({ collection_name: groupName })
          .appendTo(li);
      }
      li.addClass("closet-hangers-group-autocomplete-item");
    }
    return li.appendTo(ul);
  };

  /*

    Contact Neopets username form

  */

  var contactEl = $("#closet-hangers-contact");
  var contactForm = contactEl.children("form");
  var contactField = contactForm.children("select");

  var contactAddOption = $("<option/>", {
    text: contactField.attr("data-new-text"),
    value: -1,
  });
  contactAddOption.appendTo(contactField);
  var currentUserId = $("meta[name=current-user-id]").attr("content");

  function submitContactForm() {
    var data = contactForm.serialize();
    contactForm.disableForms();
    $.ajax({
      url: contactForm.attr("action") + ".json",
      type: "post",
      data: data,
      dataType: "json",
      complete: function () {
        contactForm.enableForms();
      },
      error: function (xhr) {
        handleSaveError(xhr, "saving Neopets username");
      },
    });
  }

  contactField.change(function (e) {
    if (contactField.val() < 0) {
      var newUsername = $.trim(
        prompt(contactField.attr("data-new-prompt"), ""),
      );
      if (newUsername) {
        $.ajax({
          url: "/user/" + currentUserId + "/neopets-connections",
          type: "POST",
          data: { neopets_connection: { neopets_username: newUsername } },
          dataType: "json",
          success: function (connection) {
            var newOption = $("<option/>", {
              text: newUsername,
              value: connection.id,
            });
            newOption.insertBefore(contactAddOption);
            contactField.val(connection.id);
            submitContactForm();
          },
        });
      }
    } else {
      submitContactForm();
    }
  });

  /*

    Hanger list controls

  */

  $("input[type=submit][data-confirm]").live("click", function (e) {
    if (!confirm(this.getAttribute("data-confirm"))) e.preventDefault();
  });

  /*

    Closet list droppable

  */

  onHangersInit(function () {
    $("div.closet-list").droppable({
      accept: "div.object",
      activate: function () {
        $(this)
          .find(".closet-list-content")
          .animate({ opacity: 0, height: 100 }, 250);
      },
      activeClass: "droppable-active",
      deactivate: function () {
        $(this)
          .find(".closet-list-content")
          .css("height", "auto")
          .animate({ opacity: 1 }, 250);
      },
      drop: function (e, ui) {
        var form = ui.draggable.find("form.closet-hanger-update");
        form
          .find("input[name=closet_hanger[list_id]]")
          .val(this.getAttribute("data-id"));
        form
          .find("input[name=closet_hanger[owned]]")
          .val($(this).closest(".closet-hangers-group").attr("data-owned"));
        submitUpdateForm(form);
      },
    });
  });

  /*

    Visibility Descriptions

  */

  function updateVisibilityDescription() {
    var descriptions = $(this)
      .closest(".visibility-form")
      .find("ul.visibility-descriptions");

    descriptions.children("li.current").removeClass("current");
    descriptions
      .children("li[data-id=" + $(this).val() + "]")
      .addClass("current");
  }

  function visibilitySelects() {
    return $("form.visibility-form select");
  }

  visibilitySelects().live("change", updateVisibilityDescription);

  onHangersInit(function () {
    visibilitySelects().each(updateVisibilityDescription);
  });

  /*

    Help

  */

  $("#toggle-help").click(function () {
    $("#closet-hangers-help").toggleClass("hidden");
  });

  /*

    Share URL

  */

  $("#closet-hangers-share-box")
    .mouseover(function () {
      $(this).focus();
    })
    .mouseout(function () {
      $(this).blur();
    });

  /*

    Initialize

  */

  hangersInit();
})();