(function () {
  var MIN_WIDTH = 80;
  var MAX_WIDTH = 560;

  function csrfToken() {
    var meta = document.querySelector("meta[name='csrf-token']");
    return meta ? meta.getAttribute("content") : "";
  }

  function initEditor(root) {
    if (root.dataset.ready === "1") return;
    root.dataset.ready = "1";

    var surface = root.querySelector(".invite-editor__surface");
    var handle = root.querySelector(".invite-editor__handle");
    var fileInput = root.querySelector("[data-invite-file]");
    var htmlField = root.closest("form").querySelector("[data-invite-html]");
    var noteInput = root.closest("form").querySelector("[data-invite-note]");
    var status = root.querySelector("[data-invite-status]");
    var selectedImg = null;
    var drag = null;

    function showStatus(message, isError) {
      if (!status) return;
      if (!message) {
        status.hidden = true;
        status.textContent = "";
        return;
      }
      status.hidden = false;
      status.textContent = message;
      status.classList.toggle("invite-editor__status--error", !!isError);
    }

    function syncHtml() {
      if (htmlField) htmlField.value = surface.innerHTML;
    }

    function syncNote() {
      var note = (noteInput && noteInput.value || "").trim();
      var el = surface.querySelector("[data-invite-note]");
      if (!note) {
        if (el) el.remove();
        syncHtml();
        return;
      }
      if (!el) {
        el = document.createElement("p");
        el.setAttribute("data-invite-note", "");
        var first = surface.querySelector("p");
        if (first && first.nextSibling) surface.insertBefore(el, first.nextSibling);
        else if (first) first.after(el);
        else surface.appendChild(el);
      }
      el.textContent = note;
      syncHtml();
    }

    function prepareImage(img) {
      img.draggable = false;
      img.style.maxWidth = "100%";
      img.style.height = "auto";
      if (!img.getAttribute("width") && img.naturalWidth) {
        img.setAttribute("width", Math.min(img.naturalWidth, MAX_WIDTH));
      }
    }

    function updateHandle() {
      if (!selectedImg || !handle) return;
      var frame = handle.parentElement.getBoundingClientRect();
      var rect = selectedImg.getBoundingClientRect();
      handle.hidden = false;
      handle.style.left = rect.right - frame.left - 8 + "px";
      handle.style.top = rect.bottom - frame.top - 8 + "px";
    }

    function clearSelection() {
      selectedImg = null;
      if (handle) handle.hidden = true;
      surface.querySelectorAll("img.invite-editor__img--selected").forEach(function (img) {
        img.classList.remove("invite-editor__img--selected");
      });
    }

    function selectImage(img) {
      clearSelection();
      selectedImg = img;
      img.classList.add("invite-editor__img--selected");
      updateHandle();
    }

    function insertImage(url) {
      surface.focus();
      document.execCommand("insertHTML", false, '<img src="' + url.replace(/"/g, "&quot;") + '" alt="">');
      var images = surface.querySelectorAll("img");
      var img = images[images.length - 1];
      if (img) {
        prepareImage(img);
        selectImage(img);
      }
      syncHtml();
    }

    function uploadFile(file) {
      if (!file || !file.type.match(/^image\/(png|jpeg|webp|gif)$/)) {
        showStatus(root.getAttribute("data-msg-type"), true);
        return;
      }
      if (file.size > 2 * 1024 * 1024) {
        showStatus(root.getAttribute("data-msg-size"), true);
        return;
      }
      var data = new FormData();
      data.append("file", file);
      showStatus(root.getAttribute("data-msg-uploading"), false);
      fetch(root.getAttribute("data-upload-url"), {
        method: "POST",
        headers: { "X-CSRF-Token": csrfToken(), Accept: "application/json" },
        body: data,
        credentials: "same-origin"
      }).then(function (res) {
        return res.json().then(function (json) {
          if (!res.ok) throw new Error(json.error || root.getAttribute("data-msg-failed"));
          return json;
        });
      }).then(function (json) {
        showStatus("", false);
        insertImage(json.url);
      }).catch(function (err) {
        showStatus(err.message || root.getAttribute("data-msg-failed"), true);
      });
    }

    root.querySelectorAll("[data-invite-cmd]").forEach(function (btn) {
      btn.addEventListener("mousedown", function (e) {
        e.preventDefault();
      });
      btn.addEventListener("click", function (e) {
        e.preventDefault();
        var cmd = btn.getAttribute("data-invite-cmd");
        surface.focus();
        if (cmd === "createLink") {
          var url = window.prompt(root.getAttribute("data-msg-link") || "URL", "https://");
          if (url) document.execCommand("createLink", false, url);
        } else if (cmd === "image") {
          fileInput.click();
        } else {
          document.execCommand(cmd, false, null);
        }
        syncHtml();
      });
    });

    fileInput.addEventListener("change", function () {
      var file = fileInput.files && fileInput.files[0];
      fileInput.value = "";
      if (file) uploadFile(file);
    });

    surface.addEventListener("click", function (e) {
      if (e.target.tagName === "IMG") {
        e.preventDefault();
        selectImage(e.target);
      } else {
        clearSelection();
      }
    });

    surface.addEventListener("input", syncHtml);
    surface.addEventListener("blur", syncHtml);
    if (noteInput) noteInput.addEventListener("input", syncNote);

    surface.addEventListener("paste", function (e) {
      var items = e.clipboardData && e.clipboardData.files;
      if (items && items.length && items[0].type.indexOf("image/") === 0) {
        e.preventDefault();
        uploadFile(items[0]);
      }
    });

    ["dragenter", "dragover"].forEach(function (type) {
      surface.addEventListener(type, function (e) {
        e.preventDefault();
        surface.classList.add("invite-editor__surface--drop");
      });
    });
    ["dragleave", "drop"].forEach(function (type) {
      surface.addEventListener(type, function () {
        surface.classList.remove("invite-editor__surface--drop");
      });
    });
    surface.addEventListener("drop", function (e) {
      e.preventDefault();
      var file = e.dataTransfer && e.dataTransfer.files && e.dataTransfer.files[0];
      if (file) uploadFile(file);
    });

    handle.addEventListener("mousedown", function (e) {
      if (!selectedImg) return;
      e.preventDefault();
      e.stopPropagation();
      drag = {
        startX: e.clientX,
        startWidth: selectedImg.getBoundingClientRect().width
      };
      document.body.classList.add("invite-editor--resizing");
    });

    document.addEventListener("mousemove", function (e) {
      if (!drag || !selectedImg) return;
      var width = Math.round(Math.min(MAX_WIDTH, Math.max(MIN_WIDTH, drag.startWidth + (e.clientX - drag.startX))));
      selectedImg.style.width = width + "px";
      selectedImg.style.height = "auto";
      selectedImg.setAttribute("width", String(width));
      selectedImg.removeAttribute("height");
      updateHandle();
    });

    document.addEventListener("mouseup", function () {
      if (!drag) return;
      drag = null;
      document.body.classList.remove("invite-editor--resizing");
      syncHtml();
    });

    window.addEventListener("resize", updateHandle);
    surface.querySelectorAll("img").forEach(prepareImage);

    var form = root.closest("form");
    form.addEventListener("submit", function () {
      syncNote();
      syncHtml();
    });
    form.addEventListener("turbo:submit-start", function () {
      syncNote();
      syncHtml();
    });
    syncNote();
    syncHtml();
  }

  function bindSelectUncovered() {
    document.querySelectorAll("[data-select-uncovered]").forEach(function (btn) {
      if (btn.dataset.boundSelect === "1") return;
      btn.dataset.boundSelect = "1";
      btn.addEventListener("click", function (e) {
        e.preventDefault();
        var formId = btn.getAttribute("data-select-uncovered");
        document.querySelectorAll('input[data-uncovered-match][form="' + formId + '"]').forEach(function (cb) {
          cb.checked = true;
        });
      });
    });
  }

  function boot() {
    document.querySelectorAll("[data-invite-editor]").forEach(initEditor);
    bindSelectUncovered();
  }

  document.addEventListener("DOMContentLoaded", boot);
  document.addEventListener("turbo:load", boot);
})();