import { installGlobalDiagnostics, logInfo } from "@rustpad/logger";
installGlobalDiagnostics();

import { applyAuthorshipEdit, authorshipOwners, lineAuthors, mapSelectionThroughEdit, parseAuthorship, renderAuthorshipLayer, replaceAuthorshipOwner, serializeAuthorship } from "@rustpad/authorship";
import { copyText } from "@rustpad/clipboard";
import { applyFormat, bindFormatShortcuts } from "@rustpad/editor-format";
import { bindEmojiPicker } from "@rustpad/emoji-picker";
import { alignPreviewLineNumbers, renderMarkdown } from "@rustpad/markdown";
import { getNickname, getGuestId, getAuthToken, getAccessToken, setAccessToken } from "@rustpad/session";
import { bindIdentityDialog, validateCurrentSession } from "@rustpad/auth-ui";
import { bindNoteFiles } from "@rustpad/note-files";
import { currentShareUrl, readEditorState, writeEditorState } from "@rustpad/url-state";
import { toast } from "@rustpad/toast";

export function startNoteEditor(adapter) {
  const editor = document.querySelector("#editor"), preview = document.querySelector("#preview"), editorWorkspace = document.querySelector("#editor-workspace"), gutter = document.querySelector("#line-gutter"), ownerLabels = document.querySelector("#owner-labels"), authorshipLayer = document.querySelector("#authorship-layer");
  const modeToggle = document.querySelector("#mode-toggle"), passwordDialog = document.querySelector("#password-dialog"), identityDialog = document.querySelector("#identity-dialog");
  const accessLevel = document.querySelector("#access-level"), roomDetails = document.querySelector("#room-details"), roomUsers = document.querySelector("#room-users"), roomCount = document.querySelector("#room-count"), socketLatency = document.querySelector("#socket-latency"), chatMessages = document.querySelector("#chat-messages"), chatForm = document.querySelector("#chat-form"), chatInput = document.querySelector("#chat-input"), chatUnread = document.querySelector("#chat-unread"), mobileChatUnread = document.querySelector("#mobile-chat-unread");
  let unreadChat = 0;
  const compactToggle = document.querySelector("#compact-toggle"), publicTaskUpdates = document.querySelector("#public-task-updates"), fontFamily = document.querySelector("#font-family"), fontSize = document.querySelector("#font-size"), currentUser = document.querySelector("#current-user"), userColorPicker = document.querySelector("#user-color-picker"), useGlobalColorButton = document.querySelector("#use-global-color");
  const shareToken = new URLSearchParams(location.search).get("share"); if (shareToken) setAccessToken(adapter.access.kind, adapter.access.key, shareToken);
  let accessToken = shareToken || getAccessToken(adapter.access.kind, adapter.access.key), password = "", nickname = getNickname(), info, socket, saveTimer, applyingRemote = false, uiState = readEditorState(), authorship = parseAuthorship("", "[]"), previousContent = "", globalColor = "", noteColor = "";
  const compactLayoutQuery = window.matchMedia("(max-width: 1499px)");
  let compactView = uiState.view === "preview" ? "preview" : "edit";
  const lineToggle = document.querySelector("#line-numbers-toggle"), previewLineToggle = document.querySelector("#preview-line-numbers-toggle"); lineToggle.checked = localStorage.getItem("rustpad:line-numbers") !== "off";
  previewLineToggle.checked = localStorage.getItem("rustpad:preview-line-numbers") === "on";
  compactToggle.checked = localStorage.getItem("rustpad:compact") !== "off";
  fontFamily.value = localStorage.getItem("rustpad:font-family") || "mono";
  fontSize.value = localStorage.getItem("rustpad:font-size") || "14";
  function defaultColorFor(name) { let h = 0; for (const c of name || "?") h = (h * 31 + c.charCodeAt(0)) % 360; return `hsl(${h} 70% 62%)`; }
  function ownerParts(owner) { const raw = String(owner || ""); const split = raw.lastIndexOf("\u001f"); return split < 0 ? { name: raw, color: "" } : { name: raw.slice(0, split), color: raw.slice(split + 1) }; }
  function ownerName(owner) { return ownerParts(owner).name; }
  function colorFor(owner) { const parts = ownerParts(owner); const ownColor = parts.name === nickname ? currentUserColor() : ""; return /^#[0-9a-f]{6}$/i.test(ownColor) ? ownColor : /^#[0-9a-f]{6}$/i.test(parts.color) ? parts.color : defaultColorFor(parts.name); }
  const guestColorKey = `rustpad:guest-color:${adapter.access.kind}:${adapter.access.key}`;
  function readGuestColor() { return sessionStorage.getItem(guestColorKey) || ""; }
  function writeGuestColor(color) { if (color) sessionStorage.setItem(guestColorKey, color); else sessionStorage.removeItem(guestColorKey); }
  function globalUserColor() { return globalColor || ""; }
  function noteUserColor() { return noteColor || ""; }
  function currentUserColor() { return noteUserColor() || globalUserColor(); }
  function currentOwner() { const color = currentUserColor(); return color ? `${nickname}\u001f${color}` : nickname; }
  function adoptCurrentOwnerAliases(model, contentLength) {
    const color = currentUserColor();
    if (!getAuthToken() || !/^#[0-9a-f]{6}$/i.test(color)) return model;
    const replacement = currentOwner();
    return replaceAuthorshipOwner(model, owner => {
      const parts = ownerParts(owner);
      return /^#[0-9a-f]{6}$/i.test(parts.color) && parts.color.toLowerCase() === color.toLowerCase();
    }, replacement, contentLength);
  }
  function updateCurrentUser() { const color = currentUserColor() || defaultColorFor(nickname); const overridden = Boolean(noteUserColor()); currentUser.querySelector(".user-chip__name").textContent = nickname; currentUser.style.setProperty("--owner", color); currentUser.title = overridden ? "Note color override" : "Global profile color"; userColorPicker.value = /^#[0-9a-f]{6}$/i.test(color) ? color : "#7c6cff"; useGlobalColorButton.hidden = !overridden; document.querySelector(".mobile-editor-bubble")?.style.setProperty("--owner", color); }
  function sessionHeaders() { const token = accessToken || getAuthToken(); return token ? { Authorization: `Bearer ${token}` } : {}; }
  function accountHeaders() { const token = getAuthToken(); return token ? { Authorization: `Bearer ${token}` } : {}; }
  async function loadNoteInfo() {
    info = await adapter.loadInfo(sessionHeaders());
    globalColor = info.global_color || ""; noteColor = info.note_color || "";
    if (getAuthToken()) {
      const colors = await adapter.loadColor(accountHeaders());
      globalColor = colors.global_color || ""; noteColor = colors.note_color || "";
    } else {
      noteColor = readGuestColor();
    }
    updateCurrentUser(); return info;
  }
  function updatePresence(users) { const entries = Array.isArray(users) ? users : []; roomCount.textContent = `${entries.length} ${entries.length === 1 ? "user" : "users"}`; roomUsers.replaceChildren(...entries.map(entry => { const user = typeof entry === "string" ? { name: entry, color: "" } : entry || {}; const li = document.createElement("li"), dot = document.createElement("span"), label = document.createElement("span"); li.className = "room-user"; dot.className = "room-user__dot"; dot.style.setProperty("--owner", /^#[0-9a-f]{6}$/i.test(user.color || "") ? user.color : defaultColorFor(user.name)); label.textContent = user.name || "Guest"; li.title = label.textContent; li.append(dot, label); return li; })); if (!entries.length) { const li = document.createElement("li"); li.textContent = "No active users"; roomUsers.append(li); } }
  function updateLatency(ms) { socketLatency.textContent = Number.isFinite(ms) ? `${ms} ms` : "— ms"; }
  function appendLinkifiedText(container, value) { const text = String(value || ""); const urlPattern = /https?:\/\/[^\s<>{}\[\]"'`]+/gi; let index = 0; for (const match of text.matchAll(urlPattern)) { const start = match.index ?? 0; if (start > index) container.append(document.createTextNode(text.slice(index, start))); let raw = match[0], trail = ""; while (/[),.!?:;]$/.test(raw)) { trail = raw.slice(-1) + trail; raw = raw.slice(0, -1); } try { const url = new URL(raw); if (url.protocol === "http:" || url.protocol === "https:") { const link = document.createElement("a"); link.href = url.href; link.textContent = raw; link.target = "_blank"; link.rel = "noopener noreferrer"; container.append(link); } else container.append(document.createTextNode(raw)); } catch { container.append(document.createTextNode(raw)); } if (trail) container.append(document.createTextNode(trail)); index = start + match[0].length; } if (index < text.length) container.append(document.createTextNode(text.slice(index))); }
  function appendChatMessage(message) { const empty = chatMessages.querySelector(".chat-empty"); empty?.remove(); const row = document.createElement("p"); row.className = "chat-message"; const author = document.createElement("strong"); author.textContent = message.sender; const text = document.createElement("span"); appendLinkifiedText(text, message.text); row.append(author, text); chatMessages.append(row); while (chatMessages.children.length > 100) chatMessages.firstElementChild.remove(); chatMessages.scrollTop = chatMessages.scrollHeight; if (message.sender !== nickname && !roomDetails.open) { unreadChat++; chatUnread.hidden = false; chatUnread.textContent = unreadChat > 99 ? "99+" : String(unreadChat); if (mobileChatUnread) { mobileChatUnread.hidden = false; mobileChatUnread.textContent = chatUnread.textContent; } const oldTitle = document.title; if (!document.title.startsWith("● ")) document.title = `● ${oldTitle}`; if (document.hidden && Notification.permission === "granted") new Notification(`${message.sender} wrote in RustPad`, { body: message.text.slice(0, 160), tag: "rustpad-room-chat" }); } }
  function clearUnread() { unreadChat = 0; chatUnread.hidden = true; chatUnread.textContent = ""; if (mobileChatUnread) { mobileChatUnread.hidden = true; mobileChatUnread.textContent = ""; } document.title = document.title.replace(/^● /, ""); }

  function setStatus(kind, text) { const className = `status__dot${kind ? ` is-${kind}` : ""}`; document.querySelector("#status-dot").className = className; document.querySelector("#status-text").textContent = text; const mobileDot = document.querySelector("#mobile-status-dot"); const mobileText = document.querySelector("#mobile-status-text"); if (mobileDot) mobileDot.className = className; if (mobileText) mobileText.textContent = text; }
  function updateAddressLabel() { document.querySelector(adapter.addressSelector).textContent = `${location.pathname}${location.search}`; }
  async function renderMermaid() { const nodes = preview.querySelectorAll(".mermaid"); if (!nodes.length) return; try { const { default: mermaid } = await import("https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs"); mermaid.initialize({ startOnLoad: false, theme: "dark", securityLevel: "strict" }); await mermaid.run({ nodes: [...nodes] }); } catch { nodes.forEach(n => n.insertAdjacentHTML("beforebegin", '<p class="error">Failed to load Mermaid.</p>')); } }
  async function renderCodeHighlight() { const nodes = preview.querySelectorAll('pre code[class^="language-"]:not(.language-mermaid)'); if (!nodes.length) return; try { const hljs = await import("https://cdn.jsdelivr.net/npm/highlight.js@11.11.1/+esm"); nodes.forEach(node => { const lines = node.querySelectorAll(".code-line"); if (!lines.length) { hljs.default.highlightElement(node); return; } const language = [...node.classList].find(name => name.startsWith("language-"))?.slice(9); lines.forEach(line => { try { line.innerHTML = hljs.default.highlight(line.textContent, { language, ignoreIllegals: true }).value; } catch { line.innerHTML = hljs.default.highlightAuto(line.textContent).value; } }); node.classList.add("hljs"); }); } catch { } }
  function renderGutter() {
    const lineCount = Math.max(1, (editor.value.match(/\n/g) || []).length + 1);
    const lines = Array.from({ length: lineCount });
    const owners = authorshipOwners(authorship);
    const showSingleOwner = owners.length === 1;
    const showAuthorship = owners.length > 1;
    const authorsByLine = showAuthorship ? lineAuthors(editor.value, authorship) : [];
    authorshipLayer.hidden = !showAuthorship;
    ownerLabels.hidden = !(showSingleOwner || showAuthorship);
    const style = getComputedStyle(editor), lineHeight = parseFloat(style.lineHeight) || 29, paddingTop = parseFloat(style.paddingTop) || 24, paddingBottom = parseFloat(style.paddingBottom) || 24;
    gutter.style.paddingTop = `${paddingTop}px`; gutter.style.paddingBottom = `${paddingBottom}px`; gutter.style.lineHeight = `${lineHeight}px`;
    gutter.innerHTML = lines.map((_, i) => `<div style="height:${lineHeight}px">${i + 1}</div>`).join("");
    ownerLabels.style.setProperty("--editor-line-height", `${lineHeight}px`);
    if (showSingleOwner) {
      const owner = owners[0];
      const top = paddingTop - editor.scrollTop;
      const markerHeight = Math.max(lineHeight, lineCount * lineHeight);
      const ownerColor = colorFor(owner);
      ownerLabels.innerHTML = `<span class="owner-line owner-line--document" style="top:${top}px;height:${markerHeight}px;--owner:${ownerColor}"></span><span class="owner-label-group" style="top:${top}px"><span class="owner-label" style="--owner:${ownerColor}">${escapeHtml(ownerName(owner))}</span></span>`;
    } else {
      let previousAuthorSignature = null;
      ownerLabels.innerHTML = lines.map((_, i) => {
        const authors = authorsByLine[i] || [];
        if (!authors.length) return "";

        const top = paddingTop + i * lineHeight - editor.scrollTop;
        const signature = authors
          .map(owner => ownerName(owner))
          .sort((a, b) => a.localeCompare(b))
          .join("\u0000");
        const startsOwnershipBlock = signature !== previousAuthorSignature;
        previousAuthorSignature = signature;

        const lineMarker = `<span class="owner-line" style="top:${top}px;--owner:${colorFor(authors[0])}"></span>`;
        if (!startsOwnershipBlock) return lineMarker;

        const badges = authors
          .map(owner => `<span class="owner-label" style="--owner:${colorFor(owner)}">${escapeHtml(ownerName(owner))}</span>`)
          .join("");
        return `${lineMarker}<span class="owner-label-group" style="top:${top}px">${badges}</span>`;
      }).join("");
    }
    if (showAuthorship) renderAuthorshipLayer(authorshipLayer, editor, authorship, colorFor);
    else authorshipLayer.replaceChildren();
    document.body.classList.toggle("hide-editor-line-numbers", !lineToggle.checked);
    document.body.classList.toggle("hide-preview-line-numbers", !previewLineToggle.checked);
  }
  function escapeHtml(v) { return String(v).replace(/[&<>"']/g, c => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#039;" }[c])); } function formatDate(value) { const raw = String(value ?? "").trim(); let normalized = raw; if (/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?[+-]\d{2}$/.test(normalized)) normalized = normalized.replace(" ", "T") + ":00"; else if (/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?[+-]\d{2}:\d{2}$/.test(normalized)) normalized = normalized.replace(" ", "T"); else if (/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)?$/.test(normalized)) normalized = normalized.replace(" ", "T") + "Z"; const date = new Date(normalized); return Number.isNaN(date.getTime()) ? raw : date.toLocaleString("pl-PL", { year: "numeric", month: "2-digit", day: "2-digit", hour: "2-digit", minute: "2-digit", second: "2-digit" }); }

  function markdownFromPreview(node) {
    const walk = current => {
      if (current.nodeType === Node.TEXT_NODE) return current.nodeValue || "";
      if (current.nodeType !== Node.ELEMENT_NODE) return "";
      const tag = current.tagName.toLowerCase(), body = [...current.childNodes].map(walk).join("");
      if (tag === "strong" || tag === "b") return `**${body}**`;
      if (tag === "em" || tag === "i") return `*${body}*`;
      if (tag === "s" || tag === "del") return `~~${body}~~`;
      if (tag === "mark") return `==${body}==`;
      if (tag === "code") return "`" + body + "`";
      if (tag === "sub") return `~${body}~`;
      if (tag === "sup" && !current.classList.contains("footnote-ref")) return `^${body}^`;
      if (tag === "a") return `[${body}](${current.getAttribute("href") || "#"})`;
      if (tag === "img") {
        const src = current.getAttribute("src") || "";
        const alt = current.getAttribute("alt") || "";
        const title = current.getAttribute("title");
        return `![${alt}](${src}${title ? ` "${title.replace(/"/g, "&quot;")}"` : ""})`;
      }
      if (tag === "br") return " ";
      return body;
    };
    return [...node.childNodes].map(walk).join("").replace(/\n/g, " ").trim();
  }

  function previewCaretOffset(target) {
    const selection = window.getSelection();
    if (!selection?.rangeCount) return 0;
    const range = selection.getRangeAt(0);
    if (!target.contains(range.startContainer)) return 0;
    const prefix = range.cloneRange();
    prefix.selectNodeContents(target);
    prefix.setEnd(range.startContainer, range.startOffset);
    return prefix.toString().length;
  }
  function placePreviewCaret(target, offset) {
    const walker = document.createTreeWalker(target, NodeFilter.SHOW_TEXT);
    let remaining = Math.max(0, offset), node;
    while ((node = walker.nextNode())) {
      if (remaining <= node.nodeValue.length) {
        const range = document.createRange(); range.setStart(node, remaining); range.collapse(true);
        const selection = window.getSelection(); selection.removeAllRanges(); selection.addRange(range); return;
      }
      remaining -= node.nodeValue.length;
    }
    const range = document.createRange(); range.selectNodeContents(target); range.collapse(false);
    const selection = window.getSelection(); selection.removeAllRanges(); selection.addRange(range);
  }
  function movePreviewCaret(target, direction) {
    const editables = [...preview.querySelectorAll(".preview-editable")];
    const index = editables.indexOf(target), next = editables[index + direction];
    if (!next) return false;
    const offset = previewCaretOffset(target); next.focus(); placePreviewCaret(next, offset); next.scrollIntoView({ block: "nearest" }); return true;
  }
  function continueIndentation(event) {
    if (event.key !== "Enter" || event.shiftKey || event.ctrlKey || event.metaKey || event.altKey) return;
    const start = editor.selectionStart, end = editor.selectionEnd;
    const lineStart = editor.value.lastIndexOf("\n", start - 1) + 1;
    const current = editor.value.slice(lineStart, start);
    const indent = (current.match(/^[ \t]*/) || [""])[0];
    if (!indent) return;
    event.preventDefault();
    editor.setRangeText(`\n${indent}`, start, end, "end");
    editor.dispatchEvent(new Event("input", { bubbles: true }));
  }

  function formatBytes(bytes) { const value = Math.max(0, Number(bytes) || 0), units = ["B", "KB", "MB", "GB", "TB"]; let size = value, index = 0; while (size >= 1024 && index < units.length - 1) { size /= 1024; index++; } return `${index === 0 ? Math.round(size) : size.toFixed(size >= 10 ? 1 : 2)} ${units[index]}`; }

  function replaceTableCell(line, index, value) {
    const leading = line.trimStart().startsWith("|"), trailing = line.trimEnd().endsWith("|");
    let body = line.trim(); if (leading) body = body.slice(1); if (trailing) body = body.slice(0, -1);
    const cells = body.split("|").map(cell => cell.trim()); while (cells.length <= index) cells.push(""); cells[index] = value.replace(/\|/g, "&#124;");
    return `${leading ? "| " : ""}${cells.join(" | ")}${trailing ? " |" : ""}`;
  }
  function render() { if (uiState.mode === "markdown") { preview.classList.remove("preview--raw"); preview.innerHTML = renderMarkdown(editor.value); document.querySelector("#preview-label").textContent = "Preview (mermaid / markdown)"; renderMermaid(); renderCodeHighlight(); } else { preview.classList.add("preview--raw"); preview.innerHTML = editor.value.split("\n").map((line, index) => `<div class="preview-source-line preview-editable" data-source-line="${index + 1}" contenteditable="true" spellcheck="true">${escapeHtml(line) || "<br>"}</div>`).join(""); document.querySelector("#preview-label").textContent = "Text preview · editable"; } alignPreviewLineNumbers(preview); document.querySelector("#characters").textContent = `${editor.value.length} characters`; document.querySelector("#words").textContent = `${editor.value.trim() ? editor.value.trim().split(/\s+/).length : 0} words`; renderGutter(); }
  function activeView() {
    return compactLayoutQuery.matches ? compactView : uiState.view;
  }

  function applyUi({ write = false, replace = false } = {}) {
    const view = activeView();
    editorWorkspace.className = `workspace view-${view} editor-workspace-font-${fontFamily.value}`;
    editorWorkspace.style.setProperty("--editor-font-size", `${fontSize.value}px`);
    document.body.classList.toggle("compact-editor", compactToggle.checked);
    document.body.classList.toggle("compact-note-layout", compactLayoutQuery.matches);
    document.querySelectorAll("[data-view]").forEach(button => {
      const active = button.dataset.view === view;
      button.classList.toggle("active", active);
      button.setAttribute("aria-pressed", String(active));
    });
    const markdown = uiState.mode === "markdown";
    modeToggle.classList.toggle("active", markdown);
    modeToggle.textContent = markdown ? "Markdown" : "Text";
    render();
    if (write) writeEditorState(uiState, { replace });
    updateAddressLabel();
  }
  function applyRemote(content, ownerMap) { if (content === editor.value && ownerMap == null) return; const previous = editor.value, start = editor.selectionStart, end = editor.selectionEnd, direction = editor.selectionDirection, scrollTop = editor.scrollTop, scrollLeft = editor.scrollLeft; const mapped = mapSelectionThroughEdit(previous, content, start, end); applyingRemote = true; editor.value = content; authorship = adoptCurrentOwnerAliases(parseAuthorship(content, ownerMap), content.length); previousContent = content; editor.setSelectionRange(mapped.start, mapped.end, direction); editor.scrollTop = scrollTop; editor.scrollLeft = scrollLeft; applyingRemote = false; render(); editor.scrollTop = scrollTop; editor.scrollLeft = scrollLeft; authorshipLayer.scrollTop = scrollTop; authorshipLayer.scrollLeft = scrollLeft; }

  const { loadFiles } = bindNoteFiles({
    editor, toast, getAccessToken: () => accessToken, canDelete: () => Boolean(info?.can_delete_files),
    endpoints: adapter.fileEndpoints,
  });
  function connect() { socket?.stop(); socket = adapter.createSocket({ password, accessToken, nickname, color: currentUserColor() || null, sessionToken: getAuthToken(), guestId: getGuestId(), onStatus: s => setStatus(s === "online" ? "online" : s === "offline" ? "offline" : null, s === "online" ? "Connected" : s === "offline" ? "Reconnecting…" : "Connecting…"), onAuthenticated: m => { if (passwordDialog.open) passwordDialog.close(); const readOnly = m.access_level === "read_only"; editor.readOnly = readOnly; accessLevel.textContent = readOnly ? "Access: read only" : "Access: full"; applyRemote(m.content, m.owner_map); if (!readOnly) editor.focus(); }, onDocument: m => { applyRemote(m.content, m.owner_map); document.querySelector("#save-state").textContent = `${m.author ? `${m.author} · ` : ""}${new Date(m.updated_at).toLocaleTimeString("en-US", { hour: "2-digit", minute: "2-digit" })}`; }, onPresence: updatePresence, onLatency: updateLatency, onChat: appendChatMessage, onError: m => { const friendly = /read-only access/i.test(m) ? "This note is read only. Enter the password or ask the owner to grant write access." : m; document.querySelector("#password-error").textContent = friendly; if (/read-only access/i.test(m)) { toast(friendly); accessLevel.textContent = "Access: read only"; editor.readOnly = true; return; } if (/nickname|session|account/i.test(m)) { if (!identityDialog.open) identityDialog.showModal(); } else if (info?.protected && !passwordDialog.open) passwordDialog.showModal(); } }); socket.connect(); }
  bindIdentityDialog({ dialog: identityDialog, onIdentity: async value => { nickname = value; accessToken = shareToken || getAuthToken() || getAccessToken(adapter.access.kind, adapter.access.key); identityDialog.close(); updateCurrentUser(); await loadNoteInfo(); if (info.protected && !accessToken) passwordDialog.showModal(); else { loadFiles(); connect(); } } });
  identityDialog.addEventListener("close", () => { if (!nickname) queueMicrotask(() => { if (!identityDialog.open) identityDialog.showModal(); }); });
  async function initialize() {
    try {
      if (getAuthToken()) {
        const session = await validateCurrentSession();
        nickname = session?.nickname || getNickname();
      }
      if (!nickname) {
        if (!identityDialog.open) identityDialog.showModal();
        return;
      }

      accessToken = shareToken || getAuthToken() || getAccessToken(adapter.access.kind, adapter.access.key);
      await loadNoteInfo();
      document.title = adapter.title(info);
      publicTaskUpdates.checked = Boolean(info.allow_public_task_updates);
      adapter.configureView?.(info);
      applyUi({ write: true, replace: true });
      updateCurrentUser();
      if (info.protected && !accessToken) passwordDialog.showModal();
      else { loadFiles(); connect(); }
    } catch (e) {
      document.body.innerHTML = `<main class="error-page"><div><h1>Note not found</h1><p>${escapeHtml(e.message)}</p></div></main>`;
    }
  }

  document.querySelectorAll("[data-view]").forEach(button => button.addEventListener("click", () => {
    if (compactLayoutQuery.matches) {
      compactView = button.dataset.view === "preview" ? "preview" : "edit";
      applyUi();
      return;
    }
    uiState = { ...uiState, view: button.dataset.view };
    applyUi({ write: true });
  }));
  compactLayoutQuery.addEventListener("change", () => applyUi());
  const headerMenuToggle = document.querySelector("#header-menu-toggle");
  const headerActions = document.querySelector("#header-actions");
  const setHeaderMenuOpen = open => {
    headerActions.classList.toggle("is-open", open);
    headerMenuToggle.setAttribute("aria-expanded", String(open));
    headerMenuToggle.setAttribute("aria-label", open ? "Close navigation menu" : "Open navigation menu");
  };
  headerMenuToggle.addEventListener("click", event => {
    event.stopPropagation();
    setHeaderMenuOpen(!headerActions.classList.contains("is-open"));
  });
  headerActions.addEventListener("click", event => {
    if (compactLayoutQuery.matches && event.target.closest("button")) setHeaderMenuOpen(false);
  });
  document.addEventListener("click", event => {
    if (!event.target.closest(".header-navigation")) setHeaderMenuOpen(false);
  });
  document.addEventListener("keydown", event => {
    if (event.key === "Escape") setHeaderMenuOpen(false);
  });
  compactLayoutQuery.addEventListener("change", event => {
    if (!event.matches) setHeaderMenuOpen(false);
  });
  modeToggle.addEventListener("click", () => { uiState = { ...uiState, mode: uiState.mode === "markdown" ? "text" : "markdown" }; applyUi({ write: true }); }); lineToggle.addEventListener("change", () => { localStorage.setItem("rustpad:line-numbers", lineToggle.checked ? "on" : "off"); renderGutter(); }); previewLineToggle.addEventListener("change", () => { localStorage.setItem("rustpad:preview-line-numbers", previewLineToggle.checked ? "on" : "off"); renderGutter(); alignPreviewLineNumbers(preview); }); compactToggle.addEventListener("change", () => { localStorage.setItem("rustpad:compact", compactToggle.checked ? "on" : "off"); applyUi(); }); fontFamily.addEventListener("change", () => { localStorage.setItem("rustpad:font-family", fontFamily.value); applyUi(); }); fontSize.addEventListener("change", () => { localStorage.setItem("rustpad:font-size", fontSize.value); applyUi(); });
  document.querySelector("#mobile-files-button")?.addEventListener("click", () => document.querySelector("#files-button")?.click());
  document.querySelector("#mobile-color-button")?.addEventListener("click", () => userColorPicker.click());
  const compactBubbleQuery = matchMedia("(max-width: 1499px)");
  document.querySelector("#mobile-chat-button")?.addEventListener("click", event => {
    event.stopPropagation();
    roomDetails.classList.add("is-mobile-open");
    roomDetails.open = true;
    clearUnread();
    requestAnimationFrame(() => chatInput.focus());
  });
  const mobileTimeButton = document.querySelector("#mobile-time-button");
  const mobileTimePreview = document.querySelector("#mobile-time-preview");
  let mobileTimeTimer = null;
  function updateMobileTime() {
    if (!mobileTimePreview) return;
    mobileTimePreview.textContent = new Intl.DateTimeFormat(undefined, { hour: "2-digit", minute: "2-digit", second: "2-digit" }).format(new Date());
  }
  mobileTimeButton?.addEventListener("click", event => {
    event.stopPropagation();
    const willOpen = mobileTimePreview.hidden;
    mobileTimePreview.hidden = !willOpen;
    clearInterval(mobileTimeTimer);
    mobileTimeTimer = null;
    if (willOpen) { updateMobileTime(); mobileTimeTimer = setInterval(updateMobileTime, 1000); }
  });
  document.addEventListener("click", event => {
    if (!event.target.closest("#mobile-time-button, #mobile-time-preview") && mobileTimePreview) { mobileTimePreview.hidden = true; clearInterval(mobileTimeTimer); mobileTimeTimer = null; }
    if (roomDetails.classList.contains("is-mobile-open") && !event.target.closest("#mobile-chat-button, #room-details")) { roomDetails.open = false; roomDetails.classList.remove("is-mobile-open"); }
  });
  const mobileBubble = document.querySelector("#mobile-editor-bubble");
  const mobileBubbleDrag = document.querySelector("#mobile-bubble-drag");
  const bubblePositionKey = `rustpad:mobile-bubble:${adapter.access.kind}`;
  function clampBubblePosition(left, top) {
    const rect = mobileBubble.getBoundingClientRect();
    const margin = 8;
    return {
      left: Math.min(Math.max(margin, left), Math.max(margin, innerWidth - rect.width - margin)),
      top: Math.min(Math.max(margin, top), Math.max(margin, innerHeight - rect.height - margin)),
    };
  }
  function placeMobileBubble(position) {
    if (!mobileBubble || !position) return;
    const next = clampBubblePosition(Number(position.left), Number(position.top));
    if (!Number.isFinite(next.left) || !Number.isFinite(next.top)) return;
    mobileBubble.style.left = `${next.left}px`;
    mobileBubble.style.top = `${next.top}px`;
    mobileBubble.style.right = "auto";
    mobileBubble.style.bottom = "auto";
  }
  try { placeMobileBubble(JSON.parse(localStorage.getItem(bubblePositionKey) || "null")); } catch {}
  mobileBubbleDrag?.addEventListener("pointerdown", event => {
    if (!mobileBubble || !compactBubbleQuery.matches) return;
    event.preventDefault();
    const rect = mobileBubble.getBoundingClientRect();
    const offsetX = event.clientX - rect.left, offsetY = event.clientY - rect.top;
    mobileBubble.classList.add("is-dragging");
    mobileBubbleDrag.setPointerCapture(event.pointerId);
    const move = moveEvent => placeMobileBubble({ left: moveEvent.clientX - offsetX, top: moveEvent.clientY - offsetY });
    const end = () => {
      mobileBubble.classList.remove("is-dragging");
      mobileBubbleDrag.removeEventListener("pointermove", move);
      mobileBubbleDrag.removeEventListener("pointerup", end);
      mobileBubbleDrag.removeEventListener("pointercancel", end);
      const finalRect = mobileBubble.getBoundingClientRect();
      localStorage.setItem(bubblePositionKey, JSON.stringify({ left: finalRect.left, top: finalRect.top }));
    };
    mobileBubbleDrag.addEventListener("pointermove", move);
    mobileBubbleDrag.addEventListener("pointerup", end);
    mobileBubbleDrag.addEventListener("pointercancel", end);
  });
  window.addEventListener("resize", () => { if (mobileBubble?.style.left) placeMobileBubble(mobileBubble.getBoundingClientRect()); });
  window.addEventListener("popstate", () => { uiState = readEditorState(); applyUi(); }); window.addEventListener("rustpad:urlchange", updateAddressLabel); document.querySelector("#copy-link").addEventListener("click", async () => { try { await copyText(currentShareUrl(uiState)); toast("Link copied"); } catch (e) { toast(e.message); } }); document.querySelectorAll("[data-format]").forEach(b => b.addEventListener("click", () => { applyFormat(editor, b.dataset.format); b.closest("details")?.removeAttribute("open"); })); bindFormatShortcuts(editor); bindEmojiPicker({ editor, details: document.querySelector("#emoji-picker"), search: document.querySelector("#emoji-search"), categories: document.querySelector("#emoji-categories"), grid: document.querySelector("#emoji-grid"), empty: document.querySelector("#emoji-empty") }); document.querySelector("#shortcuts-button").addEventListener("click", () => document.querySelector("#shortcuts-dialog").showModal()); document.querySelector("#close-shortcuts").addEventListener("click", () => document.querySelector("#shortcuts-dialog").close()); preview.addEventListener("change", event => { const checkbox = event.target.closest(".task-checkbox"); if (!checkbox) return; const lineIndex = Number(checkbox.dataset.sourceLine) - 1; const lines = editor.value.split("\n"); if (lineIndex < 0 || lineIndex >= lines.length) return; lines[lineIndex] = lines[lineIndex].replace(/^(\s*[-*+]\s+\[)[ xX](\])/, `$1${checkbox.checked ? "x" : " "}$2`); editor.value = lines.join("\n"); editor.dispatchEvent(new Event("input", { bubbles: true })); }); preview.addEventListener("keydown", event => { const target = event.target.closest(".preview-editable"); if (!target) return; if (event.key === "Enter") { event.preventDefault(); target.blur(); return; } if (event.key === "ArrowUp" || event.key === "ArrowDown") { if (movePreviewCaret(target, event.key === "ArrowUp" ? -1 : 1)) event.preventDefault(); } }); preview.addEventListener("blur", event => { const target = event.target.closest(".preview-editable"); if (!target) return; const lineIndex = Number(target.dataset.sourceLine) - 1; if (lineIndex < 0) return; const lines = editor.value.split("\n"); const value = markdownFromPreview(target); let next; if (target.dataset.tableCell !== undefined) next = replaceTableCell(lines[lineIndex], Number(target.dataset.tableCell), value); else { const prefix = target.dataset.sourcePrefix || "", suffix = target.dataset.sourceSuffix || ""; next = prefix + value + suffix; } if (lines[lineIndex] === next) return; lines[lineIndex] = next; editor.value = lines.join("\n"); editor.setSelectionRange(editor.value.length, editor.value.length); editor.dispatchEvent(new Event("input", { bubbles: true })); }, { capture: true });
  publicTaskUpdates.addEventListener("change", async () => { publicTaskUpdates.disabled = true; try { await adapter.publish(accessToken, publicTaskUpdates.checked); toast(publicTaskUpdates.checked ? "Public task updates enabled" : "Public task updates disabled"); } catch (error) { publicTaskUpdates.checked = !publicTaskUpdates.checked; toast(error.message); } finally { publicTaskUpdates.disabled = false; } }); document.querySelector("#publish-page").addEventListener("click", async () => { try { const result = await adapter.publish(accessToken, publicTaskUpdates.checked); const url = new URL(result.url, location.origin).href; await copyText(url); toast("Page link copied"); window.open(url, "_blank", "noopener"); } catch (error) { toast(error.message); } });
  roomDetails.addEventListener("toggle", () => { if (roomDetails.open) { clearUnread(); chatInput.focus(); if ("Notification" in window && Notification.permission === "default") Notification.requestPermission().catch(() => { }); } else { roomDetails.classList.remove("is-mobile-open"); } });
  document.addEventListener("visibilitychange", () => { if (!document.hidden && roomDetails.open) clearUnread(); });
  chatForm.addEventListener("submit", event => { event.preventDefault(); const text = chatInput.value.trim(); if (!text || !socket) return; socket.chat(text); chatInput.value = ""; chatInput.focus(); });
  if (!chatMessages.children.length) { const empty = document.createElement("p"); empty.className = "chat-empty"; empty.textContent = "No messages yet"; chatMessages.append(empty); }
  currentUser.addEventListener("click", () => userColorPicker.click());
  userColorPicker.addEventListener("change", async () => {
    noteColor = userColorPicker.value;
    if (getAuthToken()) {
      try { await adapter.saveColor(accountHeaders(), noteColor); } catch (error) { toast(error.message); await loadNoteInfo(); return; }
    } else {
      writeGuestColor(noteColor);
      toast("Color saved for this tab");
    }
    const replacement = currentOwner();
    authorship = replaceAuthorshipOwner(authorship, owner => ownerName(owner) === nickname, replacement, editor.value.length);
    updateCurrentUser(); render();
    socket?.setColor(userColorPicker.value);
    if (socket) socket.update(editor.value, serializeAuthorship(authorship, editor.value.length));
  });
  useGlobalColorButton.addEventListener("click", async () => {
    if (getAuthToken()) {
      try { await adapter.saveColor(accountHeaders(), null); } catch (error) { toast(error.message); return; }
    }
    noteColor = "";
    if (!getAuthToken()) writeGuestColor("");
    const replacement = currentOwner();
    authorship = replaceAuthorshipOwner(authorship, owner => ownerName(owner) === nickname, replacement, editor.value.length);
    updateCurrentUser(); render();
    socket?.setColor(currentUserColor() || null);
    if (socket) socket.update(editor.value, serializeAuthorship(authorship, editor.value.length));
    toast("Global profile color restored");
  });
  editor.addEventListener("keydown", continueIndentation); editor.addEventListener("scroll", () => { gutter.scrollTop = editor.scrollTop; authorshipLayer.scrollTop = editor.scrollTop; authorshipLayer.scrollLeft = editor.scrollLeft; renderGutter(); }); editor.addEventListener("input", () => { const nextContent = editor.value; authorship = adoptCurrentOwnerAliases(authorship, previousContent.length); authorship = replaceAuthorshipOwner(authorship, owner => ownerName(owner) === nickname, currentOwner(), previousContent.length); authorship = applyAuthorshipEdit(authorship, previousContent, nextContent, currentOwner()); previousContent = nextContent; render(); if (applyingRemote) return; clearTimeout(saveTimer); document.querySelector("#save-state").textContent = "Saving…"; saveTimer = setTimeout(() => socket?.update(editor.value, serializeAuthorship(authorship, editor.value.length)), 250); });
  document.querySelector("#password-form").addEventListener("submit", async e => { e.preventDefault(); try { password = document.querySelector("#open-password").value; const result = await adapter.requestAccess(password); accessToken = result.access_token; setAccessToken(adapter.access.kind, adapter.access.key, accessToken); password = ""; document.querySelector("#open-password").value = ""; document.querySelector("#password-error").textContent = ""; loadFiles(); connect(); } catch (error) { document.querySelector("#password-error").textContent = error.message; } });
  const historyPanel = document.querySelector("#history-panel"); document.querySelector("#history-button").addEventListener("click", async () => { historyPanel.classList.add("open"); historyPanel.setAttribute("aria-hidden", "false"); document.body.classList.add("history-open"); const list = document.querySelector("#history-list"); list.innerHTML = '<p class="empty">Loading…</p>'; try { const revisions = await adapter.loadHistory(accessToken); list.innerHTML = revisions.length ? revisions.map((r, i) => { const snippet = escapeHtml(r.content.trim().split("\n").slice(0, 3).join(" · ").slice(0, 150) || "Empty note"); const author = r.author || "Unknown author"; return `<article class="revision"><span class="revision__marker" style="--owner:${colorFor(author)}"></span><div><div class="revision__meta"><strong>${escapeHtml(author)}</strong><time>${formatDate(r.created_at)}</time></div><p class="revision__snippet">${snippet}</p><button data-preview="${r.id}">Preview</button><button data-revision="${r.id}">Restore</button><div class="revision__preview" id="preview-${r.id}" hidden></div></div></article>`; }).join("") : '<p class="empty">No history yet.</p>'; for (const r of revisions) { list.querySelector(`[data-preview="${r.id}"]`)?.addEventListener("click", () => { const el = list.querySelector(`#preview-${r.id}`); el.hidden = !el.hidden; el.textContent = r.content; }); list.querySelector(`[data-revision="${r.id}"]`)?.addEventListener("click", async () => { await adapter.restoreRevision(r.id, accessToken); toast("Version restored"); }); } } catch (e) { list.innerHTML = `<p class="error">${escapeHtml(e.message)}</p>`; } }); document.querySelector("#close-history").addEventListener("click", () => { historyPanel.classList.remove("open"); historyPanel.setAttribute("aria-hidden", "true"); document.body.classList.remove("history-open"); });

  const deleteNoteButton = document.querySelector("#delete-note"); if (deleteNoteButton && adapter.deleteNote) deleteNoteButton.addEventListener("click", async () => { try { await adapter.deleteNote(info, accessToken); } catch (error) { toast(error.message); } });
  window.addEventListener("error", event => { setStatus("offline", "Application error"); console.error(event.error || event.message); });
  window.addEventListener("unhandledrejection", event => { setStatus("offline", "Application error"); console.error(event.reason); });
  initialize();
}