Repository: alexandrenf/espacopessoal
Pull request #23: trying to fix Refactor Editor, Sidebar, and Notepad for State, UI, and Note Handling
Author: login: alexandrenf
Created: 2025-03-06T00:25:54Z | Merged: 2025-03-06T01:00:01Z



<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Enhanced the note editor to automatically update the title as you modify a note.
  - Improved responsiveness and user interaction during note editing.

- **Refactor**
  - Improved the note list display with trimmed titles and clearer deletion labels, ensuring better accessibility.
  - Simplified the creation and deletion process of notes, focusing on optimistic updates.
  - Enhanced error handling and state management for a smoother user experience.

- **Style**
  - Updated UI labels and adjusted icon sizing for a more consistent and uniform experience.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->


Diff:
diff --git a/src/app/components/Editor.tsx b/src/app/components/Editor.tsx
index b01fb5b0..04567e02 100644
--- a/src/app/components/Editor.tsx
+++ b/src/app/components/Editor.tsx
@@ -1,11 +1,12 @@
 "use client";
 
-import React, { useCallback } from "react";
+import React, { useCallback, useEffect, useState } from "react";
 import ReactMde from "react-mde";
 import { Converter } from "showdown";
 import DOMPurify from "dompurify";
 import type { Config } from "dompurify";
 import "react-mde/lib/styles/css/react-mde-all.css";
+
 interface Note {
   id: number;
   content: string;
@@ -20,7 +21,12 @@ interface EditorProps {
   isLoading?: boolean;
 }
 
-const Editor: React.FC<EditorProps> = ({ currentNote, updateNote, isSaving, isLoading }) => {
+const Editor: React.FC<EditorProps> = ({
+  currentNote,
+  updateNote,
+  isSaving,
+  isLoading,
+}) => {
   const [selectedTab, setSelectedTab] = React.useState<"write" | "preview">("write");
 
   const l18n = {
@@ -74,9 +80,11 @@ const Editor: React.FC<EditorProps> = ({ currentNote, updateNote, isSaving, isLo
     updateNote(combineContent(title, newContent));
   }, [title, combineContent, updateNote]);
 
-  React.useEffect(() => {
-    setTitle(getTitleFromContent(currentNote.content));
-  }, [currentNote.id, getTitleFromContent, currentNote.content]);
+  // Update title when note changes
+  useEffect(() => {
+    const newTitle = getTitleFromContent(currentNote.content);
+    setTitle(newTitle);
+  }, [currentNote.id, currentNote.content, getTitleFromContent]); // Added currentNote.id as dependency
 
   return (
     <div className="w-full h-screen bg-white">
diff --git a/src/app/components/Sidebar.tsx b/src/app/components/Sidebar.tsx
index 8f0972e7..cef7447a 100644
--- a/src/app/components/Sidebar.tsx
+++ b/src/app/components/Sidebar.tsx
@@ -27,7 +27,7 @@ interface SidebarProps {
 }
 
 const Sidebar: React.FC<SidebarProps> = ({
-  notes,
+  notes,  // This will now always be the local version
   currentNote,
   setCurrentNoteId,
   newNote,
@@ -37,74 +37,69 @@ const Sidebar: React.FC<SidebarProps> = ({
   onToggleSidebar,
   showSidebar,
 }) => {
-  const noteList = notes.map((note) => (
-    <li
-      key={note.id}
-      onClick={() => setCurrentNoteId(note.id)}
-      className={`group w-full p-4 border-b border-gray-200 cursor-pointer relative transition-all duration-200 hover:bg-gray-50 ${
-        note.id === currentNote.id
-          ? "bg-blue-50 border-l-4 border-l-blue-500"
-          : ""
-      } ${note.isOptimistic ? 'opacity-50' : ''}`}
-      role="option"
-      aria-selected={note.id === currentNote.id}
-      aria-busy={note.isOptimistic}
-    >
-      <div className="flex items-center justify-between">
-        <span className={`line-clamp-1 text-sm ${
-          note.id === currentNote.id 
-            ? "text-blue-700 font-medium" 
-            : "text-gray-700"
-        }`}>
-          {note.content.split("\n")[0] ?? "Untitled Note"}
-        </span>
-        {note.isOptimistic ? (
-          <ImSpinner8 
-            className="animate-spin text-blue-500 mr-4" 
-            role="status"
-            aria-label="Creating note..."
-          />
-        ) : (
-          <button
-            onClick={(event) => deleteNote(event, note.id)}
-            disabled={isDeletingId === note.id}
-            className={`
-              md:opacity-0 md:group-hover:opacity-100 absolute right-4 p-1.5 rounded-full transition-all duration-200
-              ${note.id === currentNote.id ? "md:opacity-100" : ""}
-              ${isDeletingId === note.id ? "bg-red-50 dark:bg-red-900/20" : "hover:bg-red-50 dark:hover:bg-red-900/20"}
-              focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-2
-              focus-visible:ring-offset-white dark:focus-visible:ring-offset-gray-900
-              focus:opacity-100
-              disabled:opacity-50 disabled:cursor-not-allowed
-              ${isDeletingId === note.id ? "cursor-wait" : ""}
-            `}
-            aria-label={`Delete note: ${note.content.split("\n")[0] ?? "Untitled Note"}`}
-            aria-busy={isDeletingId === note.id}
-            aria-disabled={isDeletingId === note.id}
-            role="button"
-            tabIndex={isDeletingId === note.id ? -1 : 0}
-          >
-            {isDeletingId === note.id ? (
-              <ImSpinner8 
-                className="animate-spin text-red-500 dark:text-red-400" 
-                role="status"
-                aria-label="Deleting note..."
-              />
-            ) : (
-              <FaTrash className="text-red-500 dark:text-red-400 w-3.5 h-3.5" />
-            )}
-          </button>
-        )}
-      </div>
-    </li>
-  ));
+  const noteList = notes.map((note) => {
+    // Get the title from the note's content - always use the first line
+    const noteTitle = note.content.split("\n")[0]?.trim() ?? "Untitled Note";
+    
+    return (
+      <li
+        key={note.id}
+        onClick={() => setCurrentNoteId(note.id)}
+        className={`group w-full p-4 border-b border-gray-200 cursor-pointer relative transition-all duration-200 hover:bg-gray-50 ${
+          note.id === currentNote.id
+            ? "bg-blue-50 border-l-4 border-l-blue-500"
+            : ""
+        } ${note.isOptimistic ? 'opacity-50' : ''}`}
+        role="option"
+        aria-selected={note.id === currentNote.id}
+        aria-busy={note.isOptimistic}
+      >
+        <div className="flex items-center justify-between">
+          <span className={`line-clamp-1 text-sm ${
+            note.id === currentNote.id 
+              ? "text-blue-700 font-medium" 
+              : "text-gray-700"
+          }`}>
+            {noteTitle}
+          </span>
+          {note.isOptimistic ? (
+            <ImSpinner8 
+              className="animate-spin text-blue-500 mr-4" 
+              role="status"
+              aria-label="Creating note..."
+            />
+          ) : (
+            <button
+              onClick={(event) => deleteNote(event, note.id)}
+              disabled={isDeletingId === note.id}
+              className={`
+                md:opacity-0 md:group-hover:opacity-100 absolute right-4 p-1.5 rounded-full transition-all duration-200
+                ${note.id === currentNote.id ? "md:opacity-100" : ""}
+                ${isDeletingId === note.id ? "bg-red-50 dark:bg-red-900/20" : "hover:bg-red-50 dark:hover:bg-red-900/20"}
+                focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-2
+                focus-visible:ring-offset-white dark:focus-visible:ring-offset-gray-900
+                focus:opacity-100
+              `}
+              aria-label={`Delete note: ${noteTitle}`}
+            >
+              {isDeletingId === note.id ? (
+                <ImSpinner8 className="w-4 h-4 animate-spin text-red-500" />
+              ) : (
+                <FaTrash className="w-4 h-4 text-red-500" />
+              )}
+            </button>
+          )}
+        </div>
+      </li>
+    );
+  });
 
   return (
-    <section className="w-full h-screen bg-white border-r border-gray-200 flex flex-col">
+    <section className="h-full flex flex-col bg-white">
       <div className="flex items-center justify-between p-4 border-b border-gray-200">
         <div className="flex items-center gap-3">
           <h1 className="text-xl font-semibold text-gray-800">
-            Notas
+            Notes
           </h1>
         </div>
         <div className="flex items-center gap-2">
@@ -114,7 +109,7 @@ const Sidebar: React.FC<SidebarProps> = ({
               variant="outline"
               size="icon"
               className="md:hidden"
-              aria-label="Alternar barra lateral"
+              aria-label="Toggle sidebar"
             >
               <ArrowLeft className="w-3 h-3" />
             </Button>
diff --git a/src/app/notas/[url]/notepad.tsx b/src/app/notas/[url]/notepad.tsx
index c5cfd97c..d919f355 100644
--- a/src/app/notas/[url]/notepad.tsx
+++ b/src/app/notas/[url]/notepad.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import React, { useState, useEffect, useMemo, useRef } from "react";
+import React, { useState, useEffect, useMemo, useRef, useCallback } from "react";
 import Sidebar from "../../components/Sidebar";
 import Editor from "../../components/Editor";
 import { Alert } from "../../components/Alert";
@@ -8,47 +8,41 @@ import { LoadingSpinner } from "../../components/LoadingSpinner";
 import { api } from "~/trpc/react";
 import { useParams } from "next/navigation";
 import { default as debounce } from "lodash/debounce";
-import type { DebouncedFunc } from "lodash";
 import { DeleteConfirmationModal } from "../../components/DeleteConfirmationModal";
 import Header from "~/app/components/Header";
 import { Button } from "~/components/ui/button";
 import { Menu } from "lucide-react";
 
+// ---- Constants: tweak as needed
+const IDLE_WAIT = 4000;    // Send update after 4s of no typing
+const ACTIVE_WAIT = 8000;  // Force update if typing continues for 8s
+const ERROR_MESSAGE_TIMEOUT = 5000;
+
 interface AppProps {
   password: string | null;
 }
 
-const DEBOUNCE_DELAY = 4000;
-const MAX_WAIT = DEBOUNCE_DELAY * 2;
-const ERROR_MESSAGE_TIMEOUT = 5000;
-
 export interface Note {
   id: number;
   content: string;
   createdAt: Date;
   updatedAt: Date;
+  isOptimistic?: boolean; // Added optional flag for optimistic updates
 }
 
-interface OptimisticNote extends Note {
-  isOptimistic: boolean;
-}
-
-type ErrorWithMessage = {
-  message: string;
-};
+type ErrorWithMessage = { message: string };
 
 function isErrorWithMessage(error: unknown): error is ErrorWithMessage {
   return (
-    typeof error === 'object' &&
+    typeof error === "object" &&
     error !== null &&
-    'message' in error &&
-    typeof (error as Record<string, unknown>).message === 'string'
+    "message" in error &&
+    typeof (error as Record<string, unknown>).message === "string"
   );
 }
 
 function toErrorWithMessage(maybeError: unknown): ErrorWithMessage {
   if (isErrorWithMessage(maybeError)) return maybeError;
-
   try {
     return new Error(JSON.stringify(maybeError));
   } catch {
@@ -63,403 +57,398 @@ function getErrorMessage(error: unknown): string {
 const App: React.FC<AppProps> = ({ password }) => {
   const params = useParams();
   const url = (params.url as string) || "";
-  const utils = api.useUtils();
 
-  // Local state
-  const [notes, setNotes] = useState<(Note | OptimisticNote)[]>([]);
+  // --- Local states
+  const [notes, setNotes] = useState<Note[]>([]);
   const [currentNoteId, setCurrentNoteId] = useState<number | null>(null);
-  const [updateError, setUpdateError] = useState<string | null>(null);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [isSaving, setIsSaving] = useState(false);
-  const [isFetching, setIsFetching] = useState(false);
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false);
-  const [noteToDelete, setNoteToDelete] = useState<{ id: number; title: string } | null>(null);
+  const [noteToDelete, setNoteToDelete] = useState<{
+    id: number;
+    title: string;
+  } | null>(null);
   const [isMobile, setIsMobile] = useState(false);
   const [showSidebar, setShowSidebar] = useState(true);
 
-  // Refs to track optimistic updates:
-  const lastSentTextRef = useRef<string>("");
-  const lastGoodContentRef = useRef<string>("");
-
-  // Ref to track the latest local content
-  const currentContentRef = useRef<string>("");
-
-  // Track if we're expecting a refetch
-  const expectingRefetchRef = useRef(false);
-
-  // Fetch notes from the server.
-  const { data, error, isLoading, isFetching: queryIsFetching } = api.notes.fetchNotesPublic.useQuery(
-    { url, password: password ?? undefined },
-    {
-      enabled: Boolean(url),
-      retry: 1,
-      refetchOnWindowFocus: true,
-      refetchOnReconnect: true,
-      staleTime: 0, // Consider data always stale to ensure fresh data
-      gcTime: 5 * 60 * 1000, // Cache for 5 minutes
-      refetchInterval: false,
-      select: (newData: {
-        id: number;
-        content: string | null;
-        createdAt: Date;
-        updatedAt: Date;
-      }[]) => {
-        if (newData && expectingRefetchRef.current) {
-          // If we're expecting this refetch (after create), don't reset the current note
-          setNotes(
-            newData?.map((note: { 
-              id: number; 
-              content: string | null; 
-              createdAt: Date; 
-              updatedAt: Date; 
-            }) => ({
-              ...note,
-              content: note.content ?? "",
-            })) ?? []
-          );
-          expectingRefetchRef.current = false;
-        }
-        return newData;
-      }
-    }
-  );
-
-  useEffect(() => {
-    if (data && data.length > 0 && !expectingRefetchRef.current) {
-      const processedNotes = data.map((note) => ({
+  // --- Refs
+  const latestContentRef = useRef("");
+  const errorTimeoutRef = useRef<NodeJS.Timeout>();
+  const utils = api.useUtils();
+  const typingStartTimeRef = useRef<number | null>(null);
+  const continuousTypingTimerRef = useRef<NodeJS.Timeout>();
+
+  // ==========================
+  // =        Queries         =
+  // ==========================
+  // Fetch all notes
+  // ...
+const {
+  data,
+  error,
+  isLoading,
+  refetch: refetchNotes
+} = api.notes.fetchNotesPublic.useQuery(
+  { url, password: password ?? undefined },
+  {
+    enabled: Boolean(url),
+    retry: 1,
+    refetchOnWindowFocus: false,
+    refetchOnReconnect: false,
+    staleTime: 30000, // Consider data stale after 30 seconds
+    // Transform data as it arrives
+    select: (fetchedNotes) =>
+      fetchedNotes.map(note => ({
         ...note,
-        content: note.content ?? "",
-      }));
-      setNotes(processedNotes);
-      if (processedNotes.length > 0 && currentNoteId === null) {
-        setCurrentNoteId(processedNotes[0]?.id ?? null);
-        lastGoodContentRef.current = processedNotes[0]?.content ?? "";
+        content: note.content ?? ""
+      })),
+  }
+);
+
+// 2) Then handle "onSuccess" style logic with a useEffect
+useEffect(() => {
+  if (data && data.length > 0) {
+    // e.g. store them in local state:
+    setNotes(data);
+
+    // If needed, pick a default note:
+    if (currentNoteId === null) {
+      if (data[0]?.id) {
+        setCurrentNoteId(data[0].id);
       }
     }
-  }, [data, currentNoteId]);
+  }
+}, [data, currentNoteId]);
+// ...
 
+  // Track screen resizing for mobile
   useEffect(() => {
     const checkMobile = () => {
       setIsMobile(window.innerWidth < 768);
     };
-    
     checkMobile();
-    window.addEventListener('resize', checkMobile);
-    
-    return () => window.removeEventListener('resize', checkMobile);
+    window.addEventListener("resize", checkMobile);
+    return () => window.removeEventListener("resize", checkMobile);
   }, []);
 
-  // Mutation to update a note.
-  const errorTimeoutRef = useRef<NodeJS.Timeout>();
+  // ==========================
+  // =       Mutations        =
+  // ==========================
+  // Update note
   const updateNoteMutation = api.notes.updateNotePublic.useMutation({
-    onMutate: async (newNoteData) => {
-      // Cancel any outgoing refetches to avoid overwriting our optimistic update
+    onMutate: async () => {
+      // optional: cancel queries so we don’t overwrite local state
       await utils.notes.fetchNotesPublic.cancel({ url });
-
-      // Snapshot the previous state
-      const previousNotes = notes;
-
-      // Optimistically update the note
-      setNotes((prev) =>
-        prev.map((note) =>
-          note.id === newNoteData.id
-            ? { ...note, content: newNoteData.content }
-            : note
-        )
-      );
-
-      // Return context with the previous state
-      return { previousNotes };
     },
-    onSuccess: (updatedNote) => {
-      setUpdateError(null);
+    onSuccess: () => {
+      // Don’t update local state here; we only do that after a “long pause” refetch
       setIsSaving(false);
-      
-      // Only update if the server response matches our last sent content
-      if (lastSentTextRef.current === currentContentRef.current) {
-        lastGoodContentRef.current = updatedNote.content ?? "";
-      }
-      
-      // Quietly invalidate in the background
-      void utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
     },
-    onError: (error, newNote, context) => {
-      // On error, restore the previous state
-      if (context) {
-        setNotes(context.previousNotes);
-      }
-      
-      const errorMessage = getErrorMessage(error);
-      setUpdateError(errorMessage);
+    onError: (err) => {
+      handleError(err);
       setIsSaving(false);
-      
-      if (errorTimeoutRef.current) {
-        clearTimeout(errorTimeoutRef.current);
-      }
-      errorTimeoutRef.current = setTimeout(() => setUpdateError(null), ERROR_MESSAGE_TIMEOUT);
     },
     retry: 2,
   });
 
-  // Store the mutateAsync function in a ref.
-  const updateMutateAsyncRef = useRef(updateNoteMutation.mutateAsync);
+  // We’ll store our update mutate function in a ref
+  const updateNoteRef = useRef(updateNoteMutation.mutateAsync);
   useEffect(() => {
-    updateMutateAsyncRef.current = updateNoteMutation.mutateAsync;
+    updateNoteRef.current = updateNoteMutation.mutateAsync;
   }, [updateNoteMutation]);
 
-  // Create the debounced update function only once.
-  const debouncedUpdate: DebouncedFunc<(text: string, noteId: number) => void> =
-    useMemo(
-      () =>
-        debounce(
-          (text: string, noteId: number) => {
-            //console.log("Debounced update triggered:", {
-            //  noteId,
-            //  textLength: text.length,
-            //});
-            setIsSaving(true);
-            lastSentTextRef.current = text;
-            
-            let retryCount = 0;
-            const maxRetries = 3;
-            
-            const retryUpdate = async () => {
-              try {
-                await updateMutateAsyncRef.current({ 
-                  id: noteId, 
-                  content: text,
-                  url,
-                  password: password ?? undefined
-                });
-                setIsSaving(false);
-              } catch (error) {
-                if (retryCount < maxRetries) {
-                  retryCount++;
-                  //console.log(`Retrying update (${retryCount}/${maxRetries})...`);
-                  setTimeout(() => void retryUpdate(), 1000 * retryCount);
-                } else {
-                  handleError(error);
-                }
-              }
-            };
-
-            const handleError = (error: unknown) => {
-              console.error("Error updating note:", error);
-              setIsSaving(false);
-              if (error instanceof Error) {
-                setUpdateError(error.message);
-              } else {
-                setUpdateError("Failed to update note");
-              }
-            };
-
-            void retryUpdate();
-          },
-          DEBOUNCE_DELAY,
-          { maxWait: MAX_WAIT }
-        ),
-      [password, url]
-    );
-
-  useEffect(() => {
-    return () => {
-      debouncedUpdate.flush();
-      debouncedUpdate.cancel();
-    };
-  }, [debouncedUpdate]);
-
-  // Handler to create a new note
+  // Create note
   const createNoteMutation = api.notes.createNotePublic.useMutation({
-    onMutate: async (newNoteData) => {
-      try {
-        await utils.notes.fetchNotesPublic.cancel({ url });
-
-        const previousNotes = notes;
-        const previousCurrentNoteId = currentNoteId;
-        const tempId = -Math.floor(Math.random() * 1000000);
-        
-        const optimisticNote: OptimisticNote = {
-          id: tempId,
-          content: newNoteData.content,
-          createdAt: new Date(),
-          updatedAt: new Date(),
-          isOptimistic: true,
-        };
-        
-        setNotes((prev) => [optimisticNote, ...prev]);
-        
-        return { previousNotes, previousCurrentNoteId, tempId };
-      } catch (error) {
-        const errorMessage = getErrorMessage(error);
-        console.error('Failed to prepare optimistic update:', errorMessage);
-        setUpdateError(`Failed to create note: ${errorMessage}`);
-        return { previousNotes: notes, previousCurrentNoteId: currentNoteId, tempId: null };
-      }
+    onMutate: async (variables) => {
+      // Cancel any outgoing refetches so they don't overwrite our optimistic update
+      await utils.notes.fetchNotesPublic.cancel({ url });
+
+      // Create an optimistic note
+      const optimisticNote: Note = {
+        id: -Math.floor(Math.random() * 100000), // Temporary negative ID
+        content: variables.content,
+        createdAt: new Date(),
+        updatedAt: new Date(),
+        isOptimistic: true // Flag to identify optimistic notes
+      };
+
+      // Update notes list with optimistic note
+      setNotes(prev => [optimisticNote, ...prev]);
+      setCurrentNoteId(optimisticNote.id);
+      latestContentRef.current = optimisticNote.content;
+
+      return { optimisticNote };
     },
-    onError: (error, newNote, context) => {
-      if (context) {
-        setNotes(context.previousNotes);
-        setCurrentNoteId(context.previousCurrentNoteId);
+    onError: (err, variables, context) => {
+      // On error, revert the optimistic update
+      if (context?.optimisticNote) {
+        setNotes(prev => prev.filter(note => note.id !== context.optimisticNote.id));
+        if (currentNoteId === context.optimisticNote.id) {
+          setCurrentNoteId(null);
+          latestContentRef.current = "";
+        }
       }
-      const errorMessage = getErrorMessage(error);
-      console.error('Failed to create note:', errorMessage);
-      setUpdateError(`Failed to create note: ${errorMessage}`);
+      handleError(err);
     },
-    onSuccess: async (_newNote, _variables, _context) => {
-      try {
-        await utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
-      } catch (error) {
-        console.error('Error invalidating cache:', getErrorMessage(error));
+    onSuccess: async (newNote, variables, context) => {
+      // Replace the optimistic note with the real one
+      if (context?.optimisticNote) {
+        setNotes(prev => prev.map(note => 
+          note.id === context.optimisticNote.id ? {
+            ...newNote,
+            content: latestContentRef.current // Preserve any edits made while creating
+          } : note
+        ));
+        setCurrentNoteId(newNote.id);
       }
+
+      // Refresh the notes list to ensure consistency
+      await utils.notes.fetchNotesPublic.invalidate({ 
+        url, 
+        password: password ?? undefined 
+      });
     },
     retry: 2,
   });
 
-  function createNewNote(): void {
-    if (createNoteMutation.isPending) return;
-    const newNoteContent = "Título da nota\n\n";
-    createNoteMutation.mutate({
-      url,
-      content: newNoteContent,
-      password: password ?? undefined
+  // Single source of truth for merging server and local state
+  const handleServerDataUpdate = useCallback((serverData: Note[]) => {
+    setNotes((prevNotes) => {
+      return prevNotes.map(localNote => {
+        const serverNote = serverData.find(n => n.id === localNote.id);
+        // Preserve local changes for current note
+        if (localNote.id === currentNoteId && latestContentRef.current) {
+          return { ...localNote, content: latestContentRef.current };
+        }
+        // Use server data if available, otherwise keep local version
+        return serverNote ?? localNote;
+      });
     });
-  }
 
-  // Handler to update a note.
-  function updateNote(text: string): void {
-    if (currentNoteId !== null) {
-      const noteExists = notes.some(note => note.id === currentNoteId);
-      if (!noteExists) {
-        return; // Ignore updates for non-existent notes
+    // Handle initial note selection
+    if (currentNoteId === null && serverData.length > 0) {
+      const firstNote = serverData[0];
+      if (firstNote?.id) {
+        setCurrentNoteId(firstNote.id);
+        latestContentRef.current = firstNote.content ?? "";
       }
-
-      currentContentRef.current = text;
-      
-      setNotes((prev) =>
-        prev.map((note) =>
-          note.id === currentNoteId ? { ...note, content: text } : note
-        )
-      );
-      debouncedUpdate(text, currentNoteId);
     }
-  }
+  }, [currentNoteId]);
 
-  // New: Handler for switching notes that flushes any pending update.
-  function handleSwitchNote(newNoteId: number): void {
-    if (currentNoteId !== null && currentNoteId !== newNoteId) {
-      // Flush pending changes for the current note before switching
-      debouncedUpdate.flush();
-      
-      // Force a refetch to ensure we have the latest data
-      void utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
-    }
-    
-    setCurrentNoteId(newNoteId);
-    if (isMobile) {
-      setShowSidebar(false);
-    }
-    
-    // Get the latest version of the note from our notes array
-    const newNote = notes.find(note => note.id === newNoteId);
-    if (newNote) {
-      lastGoodContentRef.current = newNote.content;
+  // Use the handler in the data effect
+  useEffect(() => {
+    if (data) {
+      handleServerDataUpdate(data);
     }
-  }
+  }, [data, handleServerDataUpdate]);
 
-  // Handler to delete a note
+  // Delete note
   const deleteNoteMutation = api.notes.deleteNotePublic.useMutation({
     onMutate: async (deleteData) => {
-      try {
-        await utils.notes.fetchNotesPublic.cancel({ url });
-        
-        const previousNotes = notes;
-        const previousCurrentNoteId = currentNoteId;
-        
-        const currentIndex = notes.findIndex(note => note.id === deleteData.id);
-        const nextNote = notes[currentIndex + 1] ?? notes[currentIndex - 1];
-        
-        setNotes((prev) => prev.filter(note => note.id !== deleteData.id));
-        
-        if (currentNoteId === deleteData.id) {
-          setCurrentNoteId(nextNote?.id ?? null);
-          if (nextNote) {
-            lastGoodContentRef.current = nextNote.content;
-          }
-        }
-        
-        return { previousNotes, previousCurrentNoteId, deletedNoteId: deleteData.id };
-      } catch (error) {
-        console.error('Error in delete onMutate:', getErrorMessage(error));
-        return { previousNotes: notes, previousCurrentNoteId: currentNoteId, deletedNoteId: null };
+      await utils.notes.fetchNotesPublic.cancel({ url });
+      const previousNotes = notes;
+      const previousCurrentNoteId = currentNoteId;
+
+      // Optimistic update
+      setNotes((prev) => prev.filter((n) => n.id !== deleteData.id));
+      if (deleteData.id === currentNoteId) {
+        setCurrentNoteId(null);
       }
+
+      return { previousNotes, previousCurrentNoteId, deletedNoteId: deleteData.id };
     },
-    onError: (error, deleteData, context) => {
+    onError: (error, _, context) => {
       if (context) {
         setNotes(context.previousNotes);
         setCurrentNoteId(context.previousCurrentNoteId);
-        lastGoodContentRef.current = context.previousNotes.find(
-          note => note.id === context.previousCurrentNoteId
-        )?.content ?? "";
+        if (context.previousCurrentNoteId) {
+          latestContentRef.current = context.previousNotes.find(
+            note => note.id === context.previousCurrentNoteId
+          )?.content ?? "";
+        }
       }
-      const errorMessage = getErrorMessage(error);
-      console.error('Failed to delete note:', errorMessage);
-      setUpdateError(`Failed to delete note: ${errorMessage}`);
+      handleError(error);
     },
     onSuccess: async (_, variables, context) => {
       if (!context) return;
-      
+
       if (currentNoteId === context.deletedNoteId) {
-        debouncedUpdate.cancel();
+        idleDebounce.cancel();
+        activeDebounce.cancel();
       }
 
-      try {
-        await utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
-      } catch (error) {
-        console.error('Error invalidating cache after delete:', getErrorMessage(error));
-      }
+      await utils.notes.fetchNotesPublic.invalidate({ 
+        url, 
+        password: password ?? undefined 
+      });
     },
     retry: 2,
   });
 
-  function deleteNote(
-    event: React.MouseEvent<HTMLButtonElement>,
-    noteId: number
-  ): void {
-    event.stopPropagation();
-    if (deleteNoteMutation.isPending) return;
+  // ==========================
+  // =       Debouncing       =
+  // ==========================
+  // This callback sends an update to the server after user stops typing
+  const idleDebounce = useMemo(
+    () =>
+      debounce(async () => {
+        if (!currentNoteId) return;
+        setIsSaving(true);
+        try {
+          await updateNoteRef.current({
+            id: currentNoteId,
+            content: latestContentRef.current,
+            url,
+            password: password ?? undefined,
+          });
+          setIsSaving(false);
+        } catch (err) {
+          handleError(err);
+        }
+      }, IDLE_WAIT),
+    [url, password, currentNoteId]
+  );
+
+  // This callback forces an update if user keeps typing
+  const activeDebounce = useMemo(
+    () =>
+      debounce(
+        async () => {
+          if (!currentNoteId) return;
+          setIsSaving(true);
+          try {
+            await updateNoteRef.current({
+              id: currentNoteId,
+              content: latestContentRef.current,
+              url,
+              password: password ?? undefined,
+            });
+            setIsSaving(false);
+          } catch (err) {
+            handleError(err);
+          }
+          // Reset typing start time after save
+          typingStartTimeRef.current = null;
+        },
+        ACTIVE_WAIT
+      ),
+    [url, password, currentNoteId]
+  );
+
+  const handleTextChange = (text: string) => {
+    latestContentRef.current = text;
+
+    // Update local notes immediately for UI responsiveness
+    // This will update the title in the sidebar letter by letter
+    setNotes((prev) =>
+      prev.map((note) =>
+        note.id === currentNoteId 
+          ? { ...note, content: text }  // Using the new content directly
+          : note
+      )
+    );
+
+    // Start tracking continuous typing if not already started
+    if (!typingStartTimeRef.current) {
+      typingStartTimeRef.current = Date.now();
+    }
+
+    // Calculate elapsed time since typing started
+    const elapsedTime = Date.now() - (typingStartTimeRef.current ?? Date.now());
     
-    const note = notes.find(n => n.id === noteId);
+    // If we've been typing continuously for 8s or more, trigger an update
+    if (elapsedTime >= ACTIVE_WAIT) {
+      void activeDebounce();
+      typingStartTimeRef.current = null; // Reset the timer after triggering
+      return;
+    }
+
+    // Handle idle debounce normally
+    void idleDebounce();
+  };
+
+  // Cleanup timers
+  useEffect(() => {
+    return () => {
+      if (continuousTypingTimerRef.current) {
+        clearTimeout(continuousTypingTimerRef.current);
+      }
+    };
+  }, []);
+
+  // ==========================
+  // =         Helpers        =
+  // ==========================
+  function handleError(err: unknown) {
+    const message = getErrorMessage(err);
+    if (errorTimeoutRef.current) clearTimeout(errorTimeoutRef.current);
+    setErrorMessage(message);
+    errorTimeoutRef.current = setTimeout(() => setErrorMessage(null), ERROR_MESSAGE_TIMEOUT);
+  }
+
+  function createNewNote() {
+    if (createNoteMutation.isPending) return;
+    createNoteMutation.mutate({
+      url,
+      content: "Título da nota\n\n",
+      password: password ?? undefined,
+    });
+  }
+
+  async function handleSwitchNote(newNoteId: number) {
+    // If we are switching to a different note
+    if (currentNoteId !== null && currentNoteId !== newNoteId) {
+      // Flush pending changes for the current note first
+      await Promise.all([
+        idleDebounce.flush(),
+        activeDebounce.flush()
+      ]).catch(err => handleError(err));
+
+      // Force a refetch to ensure we have latest data
+      await refetchNotes().catch(err => handleError(err));
+    }
+
+    // Switch current note
+    setCurrentNoteId(newNoteId);
+    if (isMobile) {
+      setShowSidebar(false);
+    }
+
+    // Update our local ref to the selected note's content so the Editor sees the correct text
+    const newNote = notes.find(note => note.id === newNoteId);
+    if (newNote) {
+      latestContentRef.current = newNote.content;
+    }
+  }
+
+  function handleDeleteNote(e: React.MouseEvent<HTMLButtonElement>, noteId: number) {
+    e.stopPropagation();
+    const note = notes.find((n) => n.id === noteId);
     if (!note) return;
-    
-    const noteTitle = note.content.split('\n')[0]?.trim() ?? "Untitled Note";
-    setNoteToDelete({ id: noteId, title: noteTitle });
+
+    const title = note.content.split("\n")[0]?.trim() ?? "Untitled";
+    setNoteToDelete({ id: noteId, title });
     setIsDeleteModalOpen(true);
   }
 
-  function handleConfirmDelete(): void {
+  function handleConfirmDelete() {
     if (!noteToDelete || deleteNoteMutation.isPending) return;
-    deleteNoteMutation.mutate({ 
+    deleteNoteMutation.mutate({
       id: noteToDelete.id,
       url,
-      password: password ?? undefined
+      password: password ?? undefined,
     });
     setIsDeleteModalOpen(false);
     setNoteToDelete(null);
   }
 
-  function findCurrentNote():
-    | Note
-    | { id: number | null; content: string } {
-    return (
-      notes.find((note) => note.id === currentNoteId) ?? {
-        id: null,
-        content: "",
-      }
-    );
+  function findCurrentNote(): Note | null {
+    return notes.find((n) => n.id === currentNoteId) ?? null;
   }
 
-  useEffect(() => {
-    setIsFetching(queryIsFetching);
-  }, [queryIsFetching]);
+  // ==========================
+  // =        Rendering       =
+  // ==========================
 
   if (!url) {
     return (
@@ -485,37 +474,42 @@ const App: React.FC<AppProps> = ({ password }) => {
     );
   }
 
+  const currentNote = findCurrentNote();
+
   return (
     <main className="h-full flex flex-col flex-grow">
-      {/* Only show header when sidebar is visible on mobile */}
       {(!isMobile || (isMobile && showSidebar)) && <Header />}
       <div className="flex-grow flex">
-        <Alert error={updateError} isSaving={isSaving} />
+        <Alert error={errorMessage} isSaving={isSaving} />
+        {/* Content */}
         {notes.length > 0 ? (
           <div className="flex w-full h-full flex-col md:flex-row">
             {/* Sidebar */}
-            <div className={`
-              w-full md:w-1/6 h-full border-r border-gray-200 transition-all duration-200
-              ${isMobile && !showSidebar ? 'hidden' : 'block'}
-            `}>
+            <div
+              className={`w-full md:w-1/6 h-full border-r border-gray-200 transition-all duration-200
+              ${isMobile && !showSidebar ? "hidden" : "block"}`}
+            >
               <Sidebar
                 notes={notes}
-                currentNote={findCurrentNote()}
+                currentNote={currentNote ?? { id: null, content: "" }}
                 setCurrentNoteId={handleSwitchNote}
                 newNote={createNewNote}
-                deleteNote={deleteNote}
+                deleteNote={handleDeleteNote}
                 isCreating={createNoteMutation.isPending}
-                isDeletingId={deleteNoteMutation.isPending ? (deleteNoteMutation.variables?.id ?? null) : null}
+                isDeletingId={
+                  deleteNoteMutation.isPending
+                    ? deleteNoteMutation.variables?.id ?? null
+                    : null
+                }
                 onToggleSidebar={isMobile ? () => setShowSidebar(!showSidebar) : undefined}
                 showSidebar={showSidebar}
               />
             </div>
-
             {/* Editor */}
-            <div className={`
-              w-full md:w-5/6 h-full transition-all duration-200 relative
-              ${currentNoteId !== null ? 'block' : 'hidden md:block'}
-            `}>
+            <div
+              className={`w-full md:w-5/6 h-full transition-all duration-200 relative
+              ${currentNoteId !== null ? "block" : "hidden md:block"}`}
+            >
               {isMobile && !showSidebar && (
                 <div className="absolute top-4 left-4 z-10">
                   <Button
@@ -523,21 +517,19 @@ const App: React.FC<AppProps> = ({ password }) => {
                     variant="outline"
                     size="icon"
                     className="md:hidden"
-                    aria-label="Alternar barra lateral"
                   >
                     <Menu className="w-3 h-3" />
                   </Button>
                 </div>
               )}
-              {currentNoteId !== null && notes.length > 0 ? (
-                <div className="relative">
-                  <Editor
-                    currentNote={findCurrentNote()}
-                    updateNote={updateNote}
-                    isSaving={isSaving}
-                    isLoading={isFetching}
-                  />
-                </div>
+              {currentNote ? (
+                <Editor
+                  currentNote={currentNote}
+                  // Instead of passing "updateNote", we pass our handleTextChange
+                  updateNote={handleTextChange}
+                  isSaving={isSaving}
+                  isLoading={false}
+                />
               ) : (
                 <div className="h-full flex items-center justify-center text-gray-500">
                   Selecione uma nota para começar a editar
@@ -546,9 +538,12 @@ const App: React.FC<AppProps> = ({ password }) => {
             </div>
           </div>
         ) : (
+          // No notes
           <div className="w-full h-full flex flex-col">
             <div className="flex-grow flex flex-col items-center justify-center gap-8 px-4">
-              <h1 className="text-lg font-semibold text-center">Você não tem notas</h1>
+              <h1 className="text-lg font-semibold text-center">
+                Você não tem notas
+              </h1>
               <button
                 className="mt-4 px-6 py-3 bg-blue-500 text-white rounded-lg shadow-md hover:bg-blue-600 transition"
                 onClick={createNewNote}
@@ -566,6 +561,7 @@ const App: React.FC<AppProps> = ({ password }) => {
             </div>
           </div>
         )}
+        {/* Delete Confirmation */}
         <DeleteConfirmationModal
           isOpen={isDeleteModalOpen}
           onClose={() => {
@@ -579,6 +575,12 @@ const App: React.FC<AppProps> = ({ password }) => {
       </div>
     </main>
   );
-}
+};
 
 export default App;
+
+
+
+
+
+


Reviews:
user: login: coderabbitai[bot]
body: **Actionable comments posted: 0**

<details>
<summary>🧹 Nitpick comments (4)</summary><blockquote>

<details>
<summary>src/app/components/Sidebar.tsx (2)</summary><blockquote>

`102-102`: **Language consistency**  
Renaming "Notas" to "Notes" moves to English. Ensure the rest of the app is consistently localized, or implement i18n to handle multiple languages.

---

`112-112`: **aria-label language alignment**  
"Toggle sidebar" is English. If the rest of the UI is partially Portuguese, consider consistent language usage or an i18n approach.

</blockquote></details>
<details>
<summary>src/app/notas/[url]/notepad.tsx (2)</summary><blockquote>

`107-120`: **UseEffect to finalize fetching logic**  
Syncing local state post-fetch and setting a default note is a clean approach. Consider edge cases where data might be empty or change drastically.

---

`123-131`: **Window resize listener**  
This effectively sets `isMobile`. For a more declarative pattern, consider using a dedicated hook like `useMediaQuery`.

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 19980873e6d8c887b8b120f2700eebdd956d69b8 and 8b2be7fb6888dbe328364d049d607fe0e3360e5b.

</details>

<details>
<summary>📒 Files selected for processing (3)</summary>

* `src/app/components/Editor.tsx` (2 hunks)
* `src/app/components/Sidebar.tsx` (2 hunks)
* `src/app/notas/[url]/notepad.tsx` (6 hunks)

</details>

<details>
<summary>🔇 Additional comments (28)</summary><blockquote>

<details>
<summary>src/app/components/Editor.tsx (2)</summary>

`3-3`: **Import hooks directly for clarity**  
Using named imports like `useEffect` and `useCallback` improves readability compared to prefixing them with `React.`.

---

`77-81`: **Well-structured effect dependency array**  
Listening on both `currentNote.id` and `currentNote.content` ensures the title updates whenever the note changes, preventing stale UI.

</details>
<details>
<summary>src/app/components/Sidebar.tsx (2)</summary>

`40-95`: **Improved note title extraction and accessibility**  
Extracting the first line as the note’s title clarifies labeling. The `aria-label` for deletion uses the same title, enhancing accessibility.

---

`98-98`: **Potential layout shift**  
Switching to `h-full` and removing full “screen” coverage may affect the overall layout. Verify it still meets design requirements on smaller viewports.

</details>
<details>
<summary>src/app/notas/[url]/notepad.tsx (24)</summary>

`16-20`: **Configurable typing intervals**  
Introducing `IDLE_WAIT` and `ACTIVE_WAIT` is a clear way to control update frequency for different typing behaviors.

---

`32-32`: **Typed error structure**  
Defining `ErrorWithMessage` clarifies how errors should be handled throughout the codebase.

---

`36-40`: **Enhanced type guard logic**  
Ensuring `error` is an object with a `message` property improves reliability in error handling.

---

`60-63`: **Local states for notes and error**  
Storing `notes` and `errorMessage` in component state is straightforward, simplifying the UI’s data flow.

---

`66-69`: **State for pending note deletion**  
Keeping both the note ID and title in `noteToDelete` helps confirm before removal, improving user clarity.

---

`73-79`: **Utilizing refs for side effects**  
Refs like `latestContentRef` and `typingStartTimeRef` streamline debouncing and error timeout management without re-render overhead.

---

`80-106`: **API query for notes**  
Fetching notes using `useQuery` with selective transformations ensures consistent data before storing locally.

---

`133-135`: **Clear separation of mutations**  
Organizing mutation logic in its own section improves readability.

---

`138-149`: **Optimistic update for note editing**  
Pausing fetches and marking `isSaving` is a good strategy to balance local updates with server synchronization.

---

`153-157`: **Storing mutate function reference**  
Holding `mutateAsync` in a ref helps avoid stale closures in the update process.

---

`159-180`: **Create note mutation**  
Implementing an optimistic approach by injecting a temporary note ID keeps the UI responsive while awaiting server confirmation.

---

`182-196`: **Delete note mutation**  
Filtering out the deleted note locally and resetting `currentNoteId` if necessary streamlines removal without additional server fetch.

---

`198-220`: **Idle-based debounce**  
Sending updates after a period of inactivity reduces server load and preserves a responsive UI. Good use of `debounce`.

---

`222-247`: **Active debounce for prolonged typing**  
This pattern ensures that even long typing sessions trigger timely server updates.

---

`249-277`: **Immediate UI synchronization in `handleTextChange`**  
Applying changes to local state immediately makes editing seamless. The combined idle and active debounces then handle finalizing updates.

---

`278-285`: **Proper cleanup**  
Clearing timers in `useEffect` cleanup prevents memory leaks and unwanted callbacks.

---

`290-295`: **Centralized error handling**  
Encapsulating the error setting logic eliminates duplication and enforces a consistent timeout-based dismissal pattern.

---

`306-347`: **Switching notes smoothly**  
Flushing pending updates before transitioning ensures no data loss and helps maintain consistency when switching.

---

`348-357`: **Storing note ID/title for deletion**  
Preparing modal data in a single function clarifies the deletion flow and avoids confusion about which note is targeted.

---

`358-367`: **Confirmation-based deletion**  
Reconfirming and then clearing the state is a solid approach to mitigate accidental deletions.

---

`369-371`: **Isolating current note retrieval**  
Returning `null` if not found helps avoid crashes or null pointer errors when `currentNoteId` is incorrect.

---

`401-402`: **Safely retrieving current note**  
Invoking `findCurrentNote()` clarifies logic and avoids inline scanning of the notes array.

---

`407-488`: **Alert and Sidebar integration**  
Passing `errorMessage` and mutation flags into the UI seamlessly handles user feedback and side navigation within a single container.

---

`502-502`: **No functional change**  
The file closure line has no additional logic to comment on.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-03-06T00:30:05Z
user: login: coderabbitai[bot]
body: **Actionable comments posted: 2**

<details>
<summary>🧹 Nitpick comments (7)</summary><blockquote>

<details>
<summary>src/app/notas/[url]/notepad.tsx (7)</summary><blockquote>

`16-19`: **Consider externalizing timing constants or making them configurable**  
These hardcoded debounce intervals work but may need adjustment per environment or user preference. Externalizing them (e.g., environment variables or a config file) can improve maintainability.

---

`73-75`: **Ref usage is appropriate**  
The additional refs (`latestContentRef`, `errorTimeoutRef`, `typingStartTimeRef`, `continuousTypingTimerRef`) nicely isolate side-effect states. However, `continuousTypingTimerRef` isn’t referenced elsewhere. Consider removing it or wiring it up if needed.  



Also applies to: 77-78

---

`85-105`: **Thoughtful data transformation**  
Applying `select` to ensure `content` is non-null is good. If you expect large note sets, consider pagination or lazy-loading in the future.

---

`138-147`: **Potential for optimistic update**  
Currently, `updateNoteMutation.onMutate` is not mutating local state for the updated note. Consider optimistic updates so users see changes immediately, similar to your create/delete flows.

---

`280-287`: **Timer cleanup**  
Clearing `continuousTypingTimerRef` is correct, though that ref is never set. Remove or implement usage.

---

`299-306`: **createNewNote**  
Defaulting to “Título da nota” is workable. If localizing, consider an i18n approach.

---

`308-332`: **Note switching logic**  
Flushing pending changes and forcing a refetch upon switching notes ensures consistency. Keep an eye on performance if notes are large or if switching is frequent.

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 8b2be7fb6888dbe328364d049d607fe0e3360e5b and cb9823edccd662ba564d90e2bb4dabbfcd7f1f45.

</details>

<details>
<summary>📒 Files selected for processing (3)</summary>

* `src/app/components/Editor.tsx` (3 hunks)
* `src/app/components/Sidebar.tsx` (3 hunks)
* `src/app/notas/[url]/notepad.tsx` (6 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (2)</summary>

* src/app/components/Editor.tsx
* src/app/components/Sidebar.tsx

</details>

<details>
<summary>🔇 Additional comments (14)</summary><blockquote>

<details>
<summary>src/app/notas/[url]/notepad.tsx (14)</summary>

`32-32`: **Looks good for typed error handling**  
Defining a separate `ErrorWithMessage` type and refining the type check logic ensures clarity and proper discrimination for error objects.  



Also applies to: 36-39

---

`60-61`: **State initialization appears sound**  
Storing notes and error messages in local state is straightforward. Ensure you reset these states when unmounting the component if needed for memory cleanup.  



Also applies to: 63-63

---

`66-69`: **Well-structured delete target tracking**  
Retaining an object with `id` and `title` is a clear approach for managing the delete confirmation workflow.

---

`80-82`: **Query section marker**  
No direct concerns here; this block simply demarcates query-related logic.

---

`123-123`: **Responsive adjustments**  
Attaching and removing the resize event listener is correct. Keep an eye on performance if frequent resizes trigger re-renders.  



Also applies to: 129-130

---

`133-135`: **Mutation section marker**  
No actionable items here—just an organizational comment block.

---

`153-154`: **Storing mutate function in a ref**  
This approach avoids stale closures when used inside debounced callbacks. Nicely done.  



Also applies to: 156-156

---

`159-180`: **Robust create mutation**  
Using negative IDs for optimistic notes is a solid technique. Watch out for any potential collisions (though unlikely).

---

`182-196`: **Delete mutation logic**  
Removing the relevant note from local state and unselecting if it’s current is straightforward and correct.

---

`198-220`: **Debouncing strategy**  
Idle and active debounces ensure fewer server calls while keeping the UI responsive. Nicely handled.  
One subtlety: if `updateNoteRef.current` throws, the try/catch and the mutation’s `onError` may both handle the error. Make sure they don’t conflict (e.g., double-setting `isSaving`).  



Also applies to: 222-246, 248-279

---

`292-298`: **Timed error display**  
Good pattern for clearing error messages automatically. If you receive multiple errors in quick succession, consider stacking or enumerating them if needed.

---

`361-369`: **Delete confirmation**  
Using `noteToDelete` to populate the modal is a clean approach. Overall flow is clear and consistent.  



Also applies to: 371-380

---

`382-383`: **Getting the current note**  
Your helper function and usage for `currentNote` improve clarity. Passing it into `<Alert />` and `<Sidebar />` helps show relevant states.  



Also applies to: 415-415, 420-420

---

`431-431`: **UI layout & final touches**  
The conditional rendering for editor vs. “no notes” scenario and the delete confirmation setup are well-structured. Good job ensuring a fluid user experience across mobile and desktop.  



Also applies to: 434-434, 436-440, 446-449, 462-469, 478-478, 481-483, 501-501, 515-515

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-03-06T00:50:38Z
user: login: coderabbitai[bot]
body: **Actionable comments posted: 0**

<details>
<summary>🧹 Nitpick comments (4)</summary><blockquote>

<details>
<summary>src/app/notas/[url]/notepad.tsx (4)</summary><blockquote>

`16-19`: **Consider externalizing constant values.**  
Although centralizing these timeout/interval values is a good practice, you might consider external configuration (e.g., environment variables or a dedicated config file) to allow tuning without changing code.

---

`256-305`: **Debouncing strategy is clear.**  
Using two debounces (idle vs. active) is a good technique to reduce frequent updates. Consider flushing these debounces when the component unmounts to avoid losing unsaved data mid-typing.

---

`338-345`: **Timer cleanup is partial.**  
You clear `continuousTypingTimerRef`, but consider also flushing `idleDebounce` and `activeDebounce` to ensure any pending server updates get sent on unmount.

---

`456-459`: **Sidebar style toggles.**  
This is a clean approach to hide/show the sidebar on mobile. For improved accessibility, consider describing hidden states to screen readers.

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between cb9823edccd662ba564d90e2bb4dabbfcd7f1f45 and 84afbb4b3de3bb21aa7ac7f75ed908cb5582ba00.

</details>

<details>
<summary>📒 Files selected for processing (1)</summary>

* `src/app/notas/[url]/notepad.tsx` (6 hunks)

</details>

<details>
<summary>🔇 Additional comments (25)</summary><blockquote>

<details>
<summary>src/app/notas/[url]/notepad.tsx (25)</summary>

`3-3`: **Looks good!**  
No concerns with importing the necessary React hooks here.

---

`32-39`: **Robust error type checking.**  
Using a custom type guard function is a neat approach for consistent error handling. This logic cleanly ensures that the `message` property is present before usage.

---

`60-69`: **State definitions are clear.**  
Storing these states at the top is consistent and improves maintainability. Keep in mind that if these states ever need bundling or more complex transitions, a reducer might help.

---

`73-79`: **Effective use of refs.**  
Retaining values across renders without triggering re-renders generally looks appropriate here. No immediate issues.

---

`80-105`: **Confirm intended refetch behavior.**  
You have disabled `refetchOnWindowFocus` and `refetchOnReconnect`; combined with a `staleTime` of 30s, the data may become outdated if a user leaves the tab open for a while. Verify if this is the desired user experience.

---

`107-120`: **Duplicate data-setting logic.**  
This effect sets local notes and picks a default note, but later logic (lines 182-206) also merges and sets notes. Consider consolidating these flows to avoid confusion or overwriting.

---

`123-130`: **Mobile resizing approach.**  
Listening for window resizing events is acceptable here, though be mindful that if this file is rendered in a Next.js SSR context, accessing `window` might cause issues. Ensure this code only runs on the client side.

---

`133-157`: **Mutation setup is sound.**  
The update mutation logic, including `onMutate`, `onSuccess`, and `onError` handling, appears consistent with standard React Query usage. Good job maintaining `isSaving` states.

---

`182-206`: **Data merging may overlap with earlier effect.**  
Merging server data while preserving local edits is a thoughtful approach, but watch out for potential double-initialization if lines 107-120 remain. Centralizing the data-handling logic in a single place would minimize confusion.  
[duplicate_comment, refactor_suggestion_essential]

---

`208-211`: **Deferred server data update.**  
Invoking `handleServerDataUpdate` inside this effect is consistent with the local merging approach. If you remove the earlier effect (lines 107-120), this should suffice for synchronization.

---

`213-254`: **Well-handled optimistic delete flow.**  
The `onMutate` rollback logic and final `invalidate` call is a solid implementation of optimistic updates. Ensuring you cancel pending queries prevents stale overwrites.

---

`306-336`: **Inline text updates + timed server sync.**  
This approach gives a snappy UI. However, ensure that if a user types beyond 8s continuously, resetting the timer after forced update captures subsequent changes correctly. It appears correct, but confirm boundary cases in QA testing.

---

`347-355`: **Centralized error handling.**  
The `handleError` function with a timed reset is straightforward. This helps prevent stale or persistent error messages.

---

`357-364`: **Create new note logic is concise.**  
Using an optimistic approach to prepend the new note is a smooth user experience. No issues found here.

---

`366-390`: **Flushing changes before switching.**  
Forcing a refetch after debouncing ensures the newly selected note is in sync. This is more reliable but could be slower if the user frequently toggles between notes. Confirm if this frequency is acceptable
.

---

`392-399`: **Deleting note from UI.**  
This setup retains clarity: you locate the note, parse its title, and prompt the user. Straightforward approach.

---

`402-411`: **Confirmation logic.**  
Checks `noteToDelete` and calls your mutation with an optimistic strategy. This flow is correct and user-friendly.

---

`413-415`: **Simple note finder.**  
Returns the selected note or `null`. This helps keep logic readable in the render section.

---

`445-445`: **Memoizing current note.**  
Assigning `findCurrentNote()` to `currentNote` is fine. If performance becomes an issue, you might consider a memo.

---

`451-452`: **Alert component usage.**  
Displaying this near the top of the layout is a practical choice to catch the user’s attention for errors or saving states.

---

`462-462`: **Sidebar properties are well-managed.**  
Passing `currentNote` and controlling the deletion states helps keep the Sidebar logic minimal and consistent.  



Also applies to: 467-471

---

`493-501`: **Editor-prop correctness.**  
Providing `handleTextChange` as `updateNote` keeps the naming consistent with the Editor’s expectations.

---

`509-509`: **Friendly empty-state message.**  
"Você não tem notas" is clear and inviting. This ensures a coherent user experience with an immediate “Create now” button.  



Also applies to: 512-514

---

`532-532`: **Delete confirmation marker.**  
This comment helps maintain clarity about where the modal is rendered.

---

`542-542`: **isDeleting binding.**  
Good use of direct `deleteNoteMutation.isPending` to control your modal’s UI state.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-03-06T00:57:17Z

Review comments:
diff_hunk: @@ -63,403 +56,336 @@ function getErrorMessage(error: unknown): string {
 const App: React.FC<AppProps> = ({ password }) => {
   const params = useParams();
   const url = (params.url as string) || "";
-  const utils = api.useUtils();
 
-  // Local state
-  const [notes, setNotes] = useState<(Note | OptimisticNote)[]>([]);
+  // --- Local states
+  const [notes, setNotes] = useState<Note[]>([]);
   const [currentNoteId, setCurrentNoteId] = useState<number | null>(null);
-  const [updateError, setUpdateError] = useState<string | null>(null);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [isSaving, setIsSaving] = useState(false);
-  const [isFetching, setIsFetching] = useState(false);
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false);
-  const [noteToDelete, setNoteToDelete] = useState<{ id: number; title: string } | null>(null);
+  const [noteToDelete, setNoteToDelete] = useState<{
+    id: number;
+    title: string;
+  } | null>(null);
   const [isMobile, setIsMobile] = useState(false);
   const [showSidebar, setShowSidebar] = useState(true);
 
-  // Refs to track optimistic updates:
-  const lastSentTextRef = useRef<string>("");
-  const lastGoodContentRef = useRef<string>("");
-
-  // Ref to track the latest local content
-  const currentContentRef = useRef<string>("");
-
-  // Track if we're expecting a refetch
-  const expectingRefetchRef = useRef(false);
-
-  // Fetch notes from the server.
-  const { data, error, isLoading, isFetching: queryIsFetching } = api.notes.fetchNotesPublic.useQuery(
-    { url, password: password ?? undefined },
-    {
-      enabled: Boolean(url),
-      retry: 1,
-      refetchOnWindowFocus: true,
-      refetchOnReconnect: true,
-      staleTime: 0, // Consider data always stale to ensure fresh data
-      gcTime: 5 * 60 * 1000, // Cache for 5 minutes
-      refetchInterval: false,
-      select: (newData: {
-        id: number;
-        content: string | null;
-        createdAt: Date;
-        updatedAt: Date;
-      }[]) => {
-        if (newData && expectingRefetchRef.current) {
-          // If we're expecting this refetch (after create), don't reset the current note
-          setNotes(
-            newData?.map((note: { 
-              id: number; 
-              content: string | null; 
-              createdAt: Date; 
-              updatedAt: Date; 
-            }) => ({
-              ...note,
-              content: note.content ?? "",
-            })) ?? []
-          );
-          expectingRefetchRef.current = false;
-        }
-        return newData;
-      }
-    }
-  );
-
-  useEffect(() => {
-    if (data && data.length > 0 && !expectingRefetchRef.current) {
-      const processedNotes = data.map((note) => ({
+  // --- Refs
+  const latestContentRef = useRef("");
+  const errorTimeoutRef = useRef<NodeJS.Timeout>();
+  const utils = api.useUtils();
+  const typingStartTimeRef = useRef<number | null>(null);
+  const continuousTypingTimerRef = useRef<NodeJS.Timeout>();
+
+  // ==========================
+  // =        Queries         =
+  // ==========================
+  // Fetch all notes
+  // ...
+const {
+  data,
+  error,
+  isLoading,
+  refetch: refetchNotes
+} = api.notes.fetchNotesPublic.useQuery(
+  { url, password: password ?? undefined },
+  {
+    enabled: Boolean(url),
+    retry: 1,
+    refetchOnWindowFocus: false,
+    refetchOnReconnect: false,
+    staleTime: 30000, // Consider data stale after 30 seconds
+    // Transform data as it arrives
+    select: (fetchedNotes) =>
+      fetchedNotes.map(note => ({
         ...note,
-        content: note.content ?? "",
-      }));
-      setNotes(processedNotes);
-      if (processedNotes.length > 0 && currentNoteId === null) {
-        setCurrentNoteId(processedNotes[0]?.id ?? null);
-        lastGoodContentRef.current = processedNotes[0]?.content ?? "";
+        content: note.content ?? ""
+      })),
+  }
+);
+
+// 2) Then handle "onSuccess" style logic with a useEffect
+useEffect(() => {
+  if (data && data.length > 0) {
+    // e.g. store them in local state:
+    setNotes(data);
+
+    // If needed, pick a default note:
+    if (currentNoteId === null) {
+      if (data[0]?.id) {
+        setCurrentNoteId(data[0].id);
       }
     }
-  }, [data, currentNoteId]);
+  }
+}, [data, currentNoteId]);
+// ...
path: src/app/notas/[url]/notepad.tsx
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Duplicated initialization logic**  
This `useEffect` sets local notes and chooses a default note. However, lines 334-359 perform a similar merge & default selection. Consider consolidating these flows to avoid overwriting or confusion.

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-06T00:50:37Z
author_association: CONTRIBUTOR
diff_hunk: @@ -63,403 +56,336 @@ function getErrorMessage(error: unknown): string {
 const App: React.FC<AppProps> = ({ password }) => {
   const params = useParams();
   const url = (params.url as string) || "";
-  const utils = api.useUtils();
 
-  // Local state
-  const [notes, setNotes] = useState<(Note | OptimisticNote)[]>([]);
+  // --- Local states
+  const [notes, setNotes] = useState<Note[]>([]);
   const [currentNoteId, setCurrentNoteId] = useState<number | null>(null);
-  const [updateError, setUpdateError] = useState<string | null>(null);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
   const [isSaving, setIsSaving] = useState(false);
-  const [isFetching, setIsFetching] = useState(false);
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false);
-  const [noteToDelete, setNoteToDelete] = useState<{ id: number; title: string } | null>(null);
+  const [noteToDelete, setNoteToDelete] = useState<{
+    id: number;
+    title: string;
+  } | null>(null);
   const [isMobile, setIsMobile] = useState(false);
   const [showSidebar, setShowSidebar] = useState(true);
 
-  // Refs to track optimistic updates:
-  const lastSentTextRef = useRef<string>("");
-  const lastGoodContentRef = useRef<string>("");
-
-  // Ref to track the latest local content
-  const currentContentRef = useRef<string>("");
-
-  // Track if we're expecting a refetch
-  const expectingRefetchRef = useRef(false);
-
-  // Fetch notes from the server.
-  const { data, error, isLoading, isFetching: queryIsFetching } = api.notes.fetchNotesPublic.useQuery(
-    { url, password: password ?? undefined },
-    {
-      enabled: Boolean(url),
-      retry: 1,
-      refetchOnWindowFocus: true,
-      refetchOnReconnect: true,
-      staleTime: 0, // Consider data always stale to ensure fresh data
-      gcTime: 5 * 60 * 1000, // Cache for 5 minutes
-      refetchInterval: false,
-      select: (newData: {
-        id: number;
-        content: string | null;
-        createdAt: Date;
-        updatedAt: Date;
-      }[]) => {
-        if (newData && expectingRefetchRef.current) {
-          // If we're expecting this refetch (after create), don't reset the current note
-          setNotes(
-            newData?.map((note: { 
-              id: number; 
-              content: string | null; 
-              createdAt: Date; 
-              updatedAt: Date; 
-            }) => ({
-              ...note,
-              content: note.content ?? "",
-            })) ?? []
-          );
-          expectingRefetchRef.current = false;
-        }
-        return newData;
-      }
-    }
-  );
-
-  useEffect(() => {
-    if (data && data.length > 0 && !expectingRefetchRef.current) {
-      const processedNotes = data.map((note) => ({
+  // --- Refs
+  const latestContentRef = useRef("");
+  const errorTimeoutRef = useRef<NodeJS.Timeout>();
+  const utils = api.useUtils();
+  const typingStartTimeRef = useRef<number | null>(null);
+  const continuousTypingTimerRef = useRef<NodeJS.Timeout>();
+
+  // ==========================
+  // =        Queries         =
+  // ==========================
+  // Fetch all notes
+  // ...
+const {
+  data,
+  error,
+  isLoading,
+  refetch: refetchNotes
+} = api.notes.fetchNotesPublic.useQuery(
+  { url, password: password ?? undefined },
+  {
+    enabled: Boolean(url),
+    retry: 1,
+    refetchOnWindowFocus: false,
+    refetchOnReconnect: false,
+    staleTime: 30000, // Consider data stale after 30 seconds
+    // Transform data as it arrives
+    select: (fetchedNotes) =>
+      fetchedNotes.map(note => ({
         ...note,
-        content: note.content ?? "",
-      }));
-      setNotes(processedNotes);
-      if (processedNotes.length > 0 && currentNoteId === null) {
-        setCurrentNoteId(processedNotes[0]?.id ?? null);
-        lastGoodContentRef.current = processedNotes[0]?.content ?? "";
+        content: note.content ?? ""
+      })),
+  }
+);
+
+// 2) Then handle "onSuccess" style logic with a useEffect
+useEffect(() => {
+  if (data && data.length > 0) {
+    // e.g. store them in local state:
+    setNotes(data);
+
+    // If needed, pick a default note:
+    if (currentNoteId === null) {
+      if (data[0]?.id) {
+        setCurrentNoteId(data[0].id);
       }
     }
-  }, [data, currentNoteId]);
+  }
+}, [data, currentNoteId]);
+// ...
 
+  // Track screen resizing for mobile
   useEffect(() => {
     const checkMobile = () => {
       setIsMobile(window.innerWidth < 768);
     };
-    
     checkMobile();
-    window.addEventListener('resize', checkMobile);
-    
-    return () => window.removeEventListener('resize', checkMobile);
+    window.addEventListener("resize", checkMobile);
+    return () => window.removeEventListener("resize", checkMobile);
   }, []);
 
-  // Mutation to update a note.
-  const errorTimeoutRef = useRef<NodeJS.Timeout>();
+  // ==========================
+  // =       Mutations        =
+  // ==========================
+  // Update note
   const updateNoteMutation = api.notes.updateNotePublic.useMutation({
-    onMutate: async (newNoteData) => {
-      // Cancel any outgoing refetches to avoid overwriting our optimistic update
+    onMutate: async () => {
+      // optional: cancel queries so we don’t overwrite local state
       await utils.notes.fetchNotesPublic.cancel({ url });
-
-      // Snapshot the previous state
-      const previousNotes = notes;
-
-      // Optimistically update the note
-      setNotes((prev) =>
-        prev.map((note) =>
-          note.id === newNoteData.id
-            ? { ...note, content: newNoteData.content }
-            : note
-        )
-      );
-
-      // Return context with the previous state
-      return { previousNotes };
     },
-    onSuccess: (updatedNote) => {
-      setUpdateError(null);
+    onSuccess: () => {
+      // Don’t update local state here; we only do that after a “long pause” refetch
       setIsSaving(false);
-      
-      // Only update if the server response matches our last sent content
-      if (lastSentTextRef.current === currentContentRef.current) {
-        lastGoodContentRef.current = updatedNote.content ?? "";
-      }
-      
-      // Quietly invalidate in the background
-      void utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
     },
-    onError: (error, newNote, context) => {
-      // On error, restore the previous state
-      if (context) {
-        setNotes(context.previousNotes);
-      }
-      
-      const errorMessage = getErrorMessage(error);
-      setUpdateError(errorMessage);
+    onError: (err) => {
+      handleError(err);
       setIsSaving(false);
-      
-      if (errorTimeoutRef.current) {
-        clearTimeout(errorTimeoutRef.current);
-      }
-      errorTimeoutRef.current = setTimeout(() => setUpdateError(null), ERROR_MESSAGE_TIMEOUT);
     },
     retry: 2,
   });
 
-  // Store the mutateAsync function in a ref.
-  const updateMutateAsyncRef = useRef(updateNoteMutation.mutateAsync);
+  // We’ll store our update mutate function in a ref
+  const updateNoteRef = useRef(updateNoteMutation.mutateAsync);
   useEffect(() => {
-    updateMutateAsyncRef.current = updateNoteMutation.mutateAsync;
+    updateNoteRef.current = updateNoteMutation.mutateAsync;
   }, [updateNoteMutation]);
 
-  // Create the debounced update function only once.
-  const debouncedUpdate: DebouncedFunc<(text: string, noteId: number) => void> =
-    useMemo(
-      () =>
-        debounce(
-          (text: string, noteId: number) => {
-            //console.log("Debounced update triggered:", {
-            //  noteId,
-            //  textLength: text.length,
-            //});
-            setIsSaving(true);
-            lastSentTextRef.current = text;
-            
-            let retryCount = 0;
-            const maxRetries = 3;
-            
-            const retryUpdate = async () => {
-              try {
-                await updateMutateAsyncRef.current({ 
-                  id: noteId, 
-                  content: text,
-                  url,
-                  password: password ?? undefined
-                });
-                setIsSaving(false);
-              } catch (error) {
-                if (retryCount < maxRetries) {
-                  retryCount++;
-                  //console.log(`Retrying update (${retryCount}/${maxRetries})...`);
-                  setTimeout(() => void retryUpdate(), 1000 * retryCount);
-                } else {
-                  handleError(error);
-                }
-              }
-            };
-
-            const handleError = (error: unknown) => {
-              console.error("Error updating note:", error);
-              setIsSaving(false);
-              if (error instanceof Error) {
-                setUpdateError(error.message);
-              } else {
-                setUpdateError("Failed to update note");
-              }
-            };
-
-            void retryUpdate();
-          },
-          DEBOUNCE_DELAY,
-          { maxWait: MAX_WAIT }
-        ),
-      [password, url]
-    );
-
-  useEffect(() => {
-    return () => {
-      debouncedUpdate.flush();
-      debouncedUpdate.cancel();
-    };
-  }, [debouncedUpdate]);
-
-  // Handler to create a new note
+  // Create note
   const createNoteMutation = api.notes.createNotePublic.useMutation({
-    onMutate: async (newNoteData) => {
-      try {
-        await utils.notes.fetchNotesPublic.cancel({ url });
-
-        const previousNotes = notes;
-        const previousCurrentNoteId = currentNoteId;
-        const tempId = -Math.floor(Math.random() * 1000000);
-        
-        const optimisticNote: OptimisticNote = {
-          id: tempId,
-          content: newNoteData.content,
-          createdAt: new Date(),
-          updatedAt: new Date(),
-          isOptimistic: true,
-        };
-        
-        setNotes((prev) => [optimisticNote, ...prev]);
-        
-        return { previousNotes, previousCurrentNoteId, tempId };
-      } catch (error) {
-        const errorMessage = getErrorMessage(error);
-        console.error('Failed to prepare optimistic update:', errorMessage);
-        setUpdateError(`Failed to create note: ${errorMessage}`);
-        return { previousNotes: notes, previousCurrentNoteId: currentNoteId, tempId: null };
-      }
+    onMutate: async (variables) => {
+      await utils.notes.fetchNotesPublic.cancel({ url });
+      // Basic optimistic approach
+      const newId = -Math.floor(Math.random() * 100000);
+      const newNote: Note = {
+        id: newId,
+        content: variables.content,
+        createdAt: new Date(),
+        updatedAt: new Date(),
+      };
+      setNotes((prev) => [newNote, ...prev]);
+      setCurrentNoteId(newId);
     },
-    onError: (error, newNote, context) => {
-      if (context) {
-        setNotes(context.previousNotes);
-        setCurrentNoteId(context.previousCurrentNoteId);
-      }
-      const errorMessage = getErrorMessage(error);
-      console.error('Failed to create note:', errorMessage);
-      setUpdateError(`Failed to create note: ${errorMessage}`);
+    onError: (err) => handleError(err),
+    onSuccess: () => {
+      // After creating, we’re not forcibly refreshing right away
+      // We rely on the “long pause” refetch for a full sync
     },
-    onSuccess: async (_newNote, _variables, _context) => {
-      try {
-        await utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
-      } catch (error) {
-        console.error('Error invalidating cache:', getErrorMessage(error));
+    retry: 2,
+  });
+
+  // Delete note
+  const deleteNoteMutation = api.notes.deleteNotePublic.useMutation({
+    onMutate: async (variables) => {
+      await utils.notes.fetchNotesPublic.cancel({ url });
+      setNotes((prev) => prev.filter((n) => n.id !== variables.id));
+      if (variables.id === currentNoteId) {
+        setCurrentNoteId(null);
       }
     },
+    onError: (err) => handleError(err),
+    onSuccess: () => {
+      // Rely on “long pause” refetch for final sync
+    },
     retry: 2,
   });
 
-  function createNewNote(): void {
+  // ==========================
+  // =       Debouncing       =
+  // ==========================
+  // This callback sends an update to the server after user stops typing
+  const idleDebounce = useMemo(
+    () =>
+      debounce(async () => {
+        if (!currentNoteId) return;
+        setIsSaving(true);
+        try {
+          await updateNoteRef.current({
+            id: currentNoteId,
+            content: latestContentRef.current,
+            url,
+            password: password ?? undefined,
+          });
+          setIsSaving(false);
+        } catch (err) {
+          handleError(err);
+        }
+      }, IDLE_WAIT),
+    [url, password, currentNoteId]
+  );
+
+  // This callback forces an update if user keeps typing
+  const activeDebounce = useMemo(
+    () =>
+      debounce(
+        async () => {
+          if (!currentNoteId) return;
+          setIsSaving(true);
+          try {
+            await updateNoteRef.current({
+              id: currentNoteId,
+              content: latestContentRef.current,
+              url,
+              password: password ?? undefined,
+            });
+            setIsSaving(false);
+          } catch (err) {
+            handleError(err);
+          }
+          // Reset typing start time after save
+          typingStartTimeRef.current = null;
+        },
+        ACTIVE_WAIT
+      ),
+    [url, password, currentNoteId]
+  );
+
+  const handleTextChange = (text: string) => {
+    latestContentRef.current = text;
+
+    // Update local notes immediately for UI responsiveness
+    // This will update the title in the sidebar letter by letter
+    setNotes((prev) =>
+      prev.map((note) =>
+        note.id === currentNoteId 
+          ? { ...note, content: text }  // Using the new content directly
+          : note
+      )
+    );
+
+    // Start tracking continuous typing if not already started
+    if (!typingStartTimeRef.current) {
+      typingStartTimeRef.current = Date.now();
+    }
+
+    // Calculate elapsed time since typing started
+    const elapsedTime = Date.now() - (typingStartTimeRef.current ?? Date.now());
+    
+    // If we've been typing continuously for 8s or more, trigger an update
+    if (elapsedTime >= ACTIVE_WAIT) {
+      void activeDebounce();
+      typingStartTimeRef.current = null; // Reset the timer after triggering
+      return;
+    }
+
+    // Handle idle debounce normally
+    void idleDebounce();
+  };
+
+  // Cleanup timers
+  useEffect(() => {
+    return () => {
+      if (continuousTypingTimerRef.current) {
+        clearTimeout(continuousTypingTimerRef.current);
+      }
+    };
+  }, []);
+
+  // ==========================
+  // =         Helpers        =
+  // ==========================
+  function handleError(err: unknown) {
+    const message = getErrorMessage(err);
+    if (errorTimeoutRef.current) clearTimeout(errorTimeoutRef.current);
+    setErrorMessage(message);
+    errorTimeoutRef.current = setTimeout(() => setErrorMessage(null), ERROR_MESSAGE_TIMEOUT);
+  }
+
+  function createNewNote() {
     if (createNoteMutation.isPending) return;
-    const newNoteContent = "Título da nota\n\n";
     createNoteMutation.mutate({
       url,
-      content: newNoteContent,
-      password: password ?? undefined
+      content: "Título da nota\n\n",
+      password: password ?? undefined,
     });
   }
 
-  // Handler to update a note.
-  function updateNote(text: string): void {
-    if (currentNoteId !== null) {
-      const noteExists = notes.some(note => note.id === currentNoteId);
-      if (!noteExists) {
-        return; // Ignore updates for non-existent notes
-      }
-
-      currentContentRef.current = text;
-      
-      setNotes((prev) =>
-        prev.map((note) =>
-          note.id === currentNoteId ? { ...note, content: text } : note
-        )
-      );
-      debouncedUpdate(text, currentNoteId);
-    }
-  }
-
-  // New: Handler for switching notes that flushes any pending update.
-  function handleSwitchNote(newNoteId: number): void {
+  async function handleSwitchNote(newNoteId: number) {
+    // If we are switching to a different note
     if (currentNoteId !== null && currentNoteId !== newNoteId) {
-      // Flush pending changes for the current note before switching
-      debouncedUpdate.flush();
-      
-      // Force a refetch to ensure we have the latest data
-      void utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
+      // Flush pending changes for the current note first
+      await Promise.all([
+        idleDebounce.flush(),
+        activeDebounce.flush()
+      ]).catch(err => handleError(err));
+
+      // Force a refetch to ensure we have latest data
+      await refetchNotes().catch(err => handleError(err));
     }
-    
+
+    // Switch current note
     setCurrentNoteId(newNoteId);
     if (isMobile) {
       setShowSidebar(false);
     }
-    
-    // Get the latest version of the note from our notes array
+
+    // Update our local ref to the selected note's content so the Editor sees the correct text
     const newNote = notes.find(note => note.id === newNoteId);
     if (newNote) {
-      lastGoodContentRef.current = newNote.content;
+      latestContentRef.current = newNote.content;
     }
   }
 
-  // Handler to delete a note
-  const deleteNoteMutation = api.notes.deleteNotePublic.useMutation({
-    onMutate: async (deleteData) => {
-      try {
-        await utils.notes.fetchNotesPublic.cancel({ url });
-        
-        const previousNotes = notes;
-        const previousCurrentNoteId = currentNoteId;
-        
-        const currentIndex = notes.findIndex(note => note.id === deleteData.id);
-        const nextNote = notes[currentIndex + 1] ?? notes[currentIndex - 1];
-        
-        setNotes((prev) => prev.filter(note => note.id !== deleteData.id));
-        
-        if (currentNoteId === deleteData.id) {
-          setCurrentNoteId(nextNote?.id ?? null);
-          if (nextNote) {
-            lastGoodContentRef.current = nextNote.content;
+  // When server data arrives, merge it with our local state
+  useEffect(() => {
+    if (data) {
+      setNotes((prevNotes) => {
+        return prevNotes.map(localNote => {
+          const serverNote = data.find(n => n.id === localNote.id);
+          // If we have local changes (in latestContentRef) for the current note, preserve them
+          if (localNote.id === currentNoteId && latestContentRef.current) {
+            return { ...localNote, content: latestContentRef.current };
+          }
+          // Otherwise use server data if available, or keep local version
+          return serverNote ?? localNote;
+        });
+      });
+
+      // Set initial note if needed
+      if (currentNoteId === null && data.length > 0) {
+        if (data[0]?.id) {
+          setCurrentNoteId(data[0].id);
+          if (data[0]) {
+            latestContentRef.current = data[0].content;
           }
         }
-        
-        return { previousNotes, previousCurrentNoteId, deletedNoteId: deleteData.id };
-      } catch (error) {
-        console.error('Error in delete onMutate:', getErrorMessage(error));
-        return { previousNotes: notes, previousCurrentNoteId: currentNoteId, deletedNoteId: null };
-      }
-    },
-    onError: (error, deleteData, context) => {
-      if (context) {
-        setNotes(context.previousNotes);
-        setCurrentNoteId(context.previousCurrentNoteId);
-        lastGoodContentRef.current = context.previousNotes.find(
-          note => note.id === context.previousCurrentNoteId
-        )?.content ?? "";
-      }
-      const errorMessage = getErrorMessage(error);
-      console.error('Failed to delete note:', errorMessage);
-      setUpdateError(`Failed to delete note: ${errorMessage}`);
-    },
-    onSuccess: async (_, variables, context) => {
-      if (!context) return;
-      
-      if (currentNoteId === context.deletedNoteId) {
-        debouncedUpdate.cancel();
-      }
-
-      try {
-        await utils.notes.fetchNotesPublic.invalidate({ url, password: password ?? undefined });
-      } catch (error) {
-        console.error('Error invalidating cache after delete:', getErrorMessage(error));
       }
-    },
-    retry: 2,
-  });
+    }
+  }, [data, currentNoteId]);
path: src/app/notas/[url]/notepad.tsx
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Merging local & server data**  
This second merging logic partially duplicates the earlier effect. Consider centralizing merging in a single place to avoid conflicts.

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-06T00:50:37Z
author_association: CONTRIBUTOR

PR comments:
user: login: vercel[bot]
created_at: 2025-03-06T00:25:58Z
body: [vc]: #xSK//Wov59Zm8UIrntyLnQXQTwHw66N+g+5Uub6keU0=:eyJpc01vbm9yZXBvIjp0cnVlLCJ0eXBlIjoiZ2l0aHViIiwicHJvamVjdHMiOlt7Im5hbWUiOiJlc3BhY29wZXNzb2FsIiwiaW5zcGVjdG9yVXJsIjoiaHR0cHM6Ly92ZXJjZWwuY29tL2FsZXhhbmRyZW5mcy1wcm9qZWN0cy9lc3BhY29wZXNzb2FsL0VmV2ZhZEhjQmJXcXF5eFZmTFJ4UUZWejJmR0IiLCJwcmV2aWV3VXJsIjoiZXNwYWNvcGVzc29hbC1naXQtZGV2LWFsZXhhbmRyZW5mcy1wcm9qZWN0cy52ZXJjZWwuYXBwIiwibmV4dENvbW1pdFN0YXR1cyI6IkRFUExPWUVEIiwibGl2ZUZlZWRiYWNrIjp7InJlc29sdmVkIjowLCJ1bnJlc29sdmVkIjowLCJ0b3RhbCI6MCwibGluayI6ImVzcGFjb3Blc3NvYWwtZ2l0LWRldi1hbGV4YW5kcmVuZnMtcHJvamVjdHMudmVyY2VsLmFwcCJ9LCJyb290RGlyZWN0b3J5IjpudWxsfV19
**The latest updates on your projects**. Learn more about [Vercel for Git ↗︎](https://vercel.link/github-learn-more)

| Name | Status | Preview | Comments | Updated (UTC) |
| :--- | :----- | :------ | :------- | :------ |
| **espacopessoal** | ✅ Ready ([Inspect](https://vercel.com/alexandrenfs-projects/espacopessoal/EfWfadHcBbWqqyxVfLRxQFVz2fGB)) | [Visit Preview](https://espacopessoal-git-dev-alexandrenfs-projects.vercel.app) | 💬 [**Add feedback**](https://vercel.live/open-feedback/espacopessoal-git-dev-alexandrenfs-projects.vercel.app?via=pr-comment-feedback-link) | Mar 6, 2025 1:00am |


author_association: NONE
user: login: coderabbitai[bot]
created_at: 2025-03-06T00:26:00Z
body: <!-- This is an auto-generated comment: summarize by coderabbit.ai -->
<!-- This is an auto-generated comment: failure by coderabbit.ai -->

> [!CAUTION]
> ## Review failed
> 
> The pull request is closed.

<!-- end of auto-generated comment: failure by coderabbit.ai -->
<!-- walkthrough_start -->

## Walkthrough
This pull request refactors several components to improve state management, UI clarity, and note-handling logic. In the `Editor` component, the `useEffect` hook is now imported and used directly to update the title as the current note changes. In the `Sidebar`, the note title is extracted into a variable for clearer rendering and improved accessibility. The `notepad` component undergoes a significant overhaul, introducing debouncing constants and functions, simplifying optimistic updates, dedicated error handling, and refined query configurations.

## Changes

| Files | Change Summary |
| ----- | -------------- |
| `src/app/components/Editor.tsx`<br>`src/app/components/Sidebar.tsx` | **Editor.tsx:** Replaced `React.useEffect` with a direct `useEffect`, updated dependency array (adding `currentNote.id`) and comments for title management.<br>**Sidebar.tsx:** Introduced a `noteTitle` variable for extracting and trimming note content, updated aria-labels, adjusted spinner size, and translated header text. |
| `src/app/notas/[url]/notepad.tsx` | Refactored note management logic by adding `IDLE_WAIT` and `ACTIVE_WAIT` constants, simplifying optimistic updates, introducing distinct debouncing functions, enhancing error handling with a dedicated function, and updating query policies (stale time & refetch settings). |

## Sequence Diagram(s)

```mermaid
sequenceDiagram
    participant E as Editor Component
    participant U as useEffect Hook
    E->>U: currentNote.content or ID change detected
    U->>E: Updates title state
```

```mermaid
sequenceDiagram
    participant User as User
    participant N as Notepad Component
    participant D as Debounce Functions
    participant M as Mutation Handler

    User->>N: Types note content
    N->>D: Trigger idleDebounce / activeDebounce
    D->>N: Debounce period completes
    N->>M: Send update (create/update note)
    M->>N: Return mutation result (or error)
    N->>N: Update local note state / handle error
```

## Possibly related PRs
- **alexandrenf/espacopessoal#14:** The changes in the main PR for `Editor.tsx` focus on enhancing the title state management using `useEffect` and `useState`, while the retrieved PR modifies the `EditorProps` interface and adds a new `isLoading` prop, indicating that the changes in the main PR are related to those in the retrieved PR at the code level.
- **alexandrenf/espacopessoal#3:** The changes in the main PR for `Editor.tsx` and `Sidebar.tsx` involve updates to the handling of the `currentNote` property, specifically changing its structure and the properties accessed, which is directly related to the modifications in the `notepad.tsx` file that also updates the `currentNote` type and its usage.

## Poem
> I’m a bunny with a coding tale,  
> Hopping through changes without fail.  
> Editor and Sidebar now dance in time,  
> Notepad’s logic sings in rhythm and rhyme.  
> Bugs hop away as we celebrate the day! 🐰  
> With a joyful twitch, I cheer—hooray!  
>

<!-- walkthrough_end -->
<!-- internal state start -->


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-->

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* `src/app/notas/[url]/notepad.tsx` (6 hunks)

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author_association: CONTRIBUTOR
user: login: alexandrenf
created_at: 2025-03-06T00:32:44Z
body: @coderabbitai explain UseEffect to finalize fetching logic
Syncing local state post-fetch and setting a default note is a clean approach. Consider edge cases where data might be empty or change drastically.
author_association: OWNER
user: login: coderabbitai[bot]
created_at: 2025-03-06T00:33:34Z
body: <!-- This is an auto-generated reply by CodeRabbit -->
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<details>
<summary>🧩 Analysis chain</summary>

Looking at the AI summary, I need to focus on the useEffect hook that handles fetching and state updates in the notepad component. Let me check this file first to understand the implementation details.

@alexandrenf Let me explain the useEffect hook that handles fetching logic in your notepad component:

The useEffect hook is a React lifecycle method that allows you to perform side effects in functional components. In your note-taking application, you're using it to synchronize your local state with data fetched from an external source.

Here's how the useEffect works for your fetching logic:

```javascript
// This useEffect runs whenever the fetched data changes
useEffect(() => {
  if (data?.notes) {
    // Update local state with the fetched notes
    setNotes(data.notes);
    
    // If no note is currently selected but we have notes,
    // automatically select the first note
    if (!currentNoteId && data.notes.length > 0) {
      setCurrentNoteId(data.notes[0].id);
    }
  }
}, [data, currentNoteId]);
```

This pattern is effective because:

1. **State Synchronization**: It keeps your local state (`notes`) in sync with server data
2. **Default Selection**: It provides a good user experience by selecting a default note when none is selected
3. **Dependency Array**: By including `data` and `currentNoteId` in the dependency array, the effect runs only when these values change

For handling edge cases:

1. **Empty Data**: You're already checking if `data?.notes` exists before trying to use it, which is good defensive programming
2. **Drastic Data Changes**: Consider adding additional logic to handle situations where:
   - A previously selected note no longer exists in the returned data
   - The order of notes changes significantly
   - The server returns an error or partially complete data

For example, you could add:

```javascript
useEffect(() => {
  if (data?.notes) {
    setNotes(data.notes);
    
    // If there are notes but the current note no longer exists in the data
    if (currentNoteId && data.notes.length > 0 && !data.notes.some(note => note.id === currentNoteId)) {
      // Fall back to the first note
      setCurrentNoteId(data.notes[0].id);
    }
    // If no note is selected but notes exist
    else if (!currentNoteId && data.notes.length > 0) {
      setCurrentNoteId(data.notes[0].id);
    }
  } else {
    // Handle the case when no notes are returned
    setNotes([]);
    setCurrentNoteId(null);
  }
}, [data, currentNoteId]);
```

This enhanced approach ensures that your component gracefully handles various edge cases in the data fetching process, maintaining a consistent user experience even when the backend data changes unexpectedly.

---

🏁 Script executed:
```
#!/bin/bash
# Get the content of the notepad.tsx file to understand the useEffect implementation
cat src/app/notas/\[url\]/notepad.tsx
```

Length of output: 15620

---



</details>

@alexandrenf Let me explain the useEffect implementation that finalizes your fetching logic in the notepad component:

```javascript
// First, you have the data fetching setup with React Query via TRPC
const {
  data,
  error,
  isLoading,
  refetch: refetchNotes
} = api.notes.fetchNotesPublic.useQuery(
  { url, password: password ?? undefined },
  {
    enabled: Boolean(url),
    retry: 1,
    refetchOnWindowFocus: false,
    refetchOnReconnect: false,
    staleTime: 30000, // Consider data stale after 30 seconds
    // Transform data as it arrives
    select: (fetchedNotes) =>
      fetchedNotes.map(note => ({
        ...note,
        content: note.content ?? ""
      })),
  }
);

// Then you handle the fetched data with useEffect
useEffect(() => {
  if (data && data.length > 0) {
    // Update local state with the fetched notes
    setNotes(data);

    // If needed, pick a default note
    if (currentNoteId === null) {
      if (data[0]?.id) {
        setCurrentNoteId(data[0].id);
      }
    }
  }
}, [data, currentNoteId]);
```

## How This Works

1. **Data Transformation**: You're using the `select` option to ensure all notes have a content property (defaulting to empty string if null)
2. **Local State Synchronization**: The useEffect updates your local state whenever the fetched data changes
3. **Default Selection**: If no note is currently selected, you automatically select the first note

## Edge Case Considerations

Your approach is clean, but could be enhanced to handle more edge cases:

1. **Empty Data**: Currently, you only process data when `data && data.length > 0`. You might want to explicitly handle the empty case:

```javascript
useEffect(() => {
  if (data) {
    if (data.length > 0) {
      setNotes(data);
      
      // Select first note if none selected
      if (currentNoteId === null && data[0]?.id) {
        setCurrentNoteId(data[0].id);
      }
    } else {
      // Handle empty data case
      setNotes([]);
      setCurrentNoteId(null);
    }
  }
}, [data, currentNoteId]);
```

2. **Previously Selected Note No Longer Exists**: Add logic to check if the current note still exists after a fetch:

```javascript
useEffect(() => {
  if (data) {
    setNotes(data);
    
    // Check if the currently selected note still exists
    if (currentNoteId !== null && data.length > 0) {
      const noteStillExists = data.some(note => note.id === currentNoteId);
      
      if (!noteStillExists) {
        // Fall back to the first note if current note was deleted
        setCurrentNoteId(data[0].id);
      }
    } else if (currentNoteId === null && data.length > 0) {
      // Select first note if none selected
      setCurrentNoteId(data[0].id);
    }
  }
}, [data, currentNoteId]);
```

3. **Drastic Changes**: You might want to add more sophisticated comparison logic between old and new data:

```javascript
useEffect(() => {
  if (data) {
    // Compare with previous notes if needed
    // const hasSignificantChanges = checkForSignificantChanges(notes, data);
    
    setNotes(data);
    
    // Handle selection logic as above...
  }
}, [data, currentNoteId]);
```

By enhancing your useEffect with these considerations, your component will be more resilient to edge cases like empty data sets, deleted notes, and significant data changes from the server.
author_association: CONTRIBUTOR