Fix issue #35: feat: Implement drag and drop functionality for reordering todos

[larryhudson-aider-github[bot]]

This PR addresses the changes requested in issue #35

Thank you for adding src/App.tsx to the chat. To implement drag and drop functionality for reordering todos, we'll use the react-beautiful-dnd library. We'll need to make several changes to the App.tsx file. Here's how we'll do it:

1. Import the necessary components from react-beautiful-dnd.
2. Wrap the todo lists with DragDropContext and Droppable components.
3. Wrap each todo item with a Draggable component.
4. Implement a function to handle the end of drag events.
5. Update the state management to work with the new drag and drop functionality.

Let's start by making these changes:

src/App.tsx

<<<<<<< SEARCH
import { useState, useEffect, useRef } from 'react'
import './App.css'
=======
import { useState, useEffect, useRef } from 'react'
import { DragDropContext, Droppable, Draggable, DropResult } from 'react-beautiful-dnd'
import './App.css'
>>>>>>> REPLACE

Now, let's update the state management and add a function to handle drag end events:

src/App.tsx

<<<<<<< SEARCH
  const [todos, setTodos] = useState<Todo[]>(loadTodosFromLocalStorage())
  const [newTodo, setNewTodo] = useState('')
  const [dueDate, setDueDate] = useState<string>(new Date().toISOString().split('T')[0])
  const [darkMode, setDarkMode] = useState<boolean>(false)
  const fileInputRef = useRef<HTMLInputElement>(null)
=======
  const [todos, setTodos] = useState<Todo[]>(loadTodosFromLocalStorage())
  const [newTodo, setNewTodo] = useState('')
  const [dueDate, setDueDate] = useState<string>(new Date().toISOString().split('T')[0])
  const [darkMode, setDarkMode] = useState<boolean>(false)
  const fileInputRef = useRef<HTMLInputElement>(null)

  const onDragEnd = (result: DropResult) => {
    if (!result.destination) {
      return;
    }

    const items = Array.from(todos);
    const [reorderedItem] = items.splice(result.source.index, 1);
    items.splice(result.destination.index, 0, reorderedItem);

    setTodos(items);
  }
>>>>>>> REPLACE

Now, let's update the JSX to include the drag and drop components:

src/App.tsx

<<<<<<< SEARCH
  return (
    <div className="App">
      <button className="dark-mode-toggle" onClick={toggleDarkMode}>
        {darkMode ? '☀️' : '🌙'}
      </button>
      <h1>To-Do List</h1>
      <div className="import-export-buttons">
        <button onClick={exportTodos}>Export Todos</button>
        <button onClick={() => fileInputRef.current?.click()}>Import Todos</button>
        <input
          type="file"
          ref={fileInputRef}
          style={{ display: 'none' }}
          onChange={importTodos}
          accept=".json"
        />
      </div>
      <form onSubmit={addTodo}>
        <input
          type="text"
          value={newTodo}
          onChange={(e) => setNewTodo(e.target.value)}
          placeholder="Add a new todo"
        />
        <input
          type="date"
          value={dueDate}
          onChange={(e) => setDueDate(e.target.value)}
        />
        <button type="submit">Add</button>
      </form>
      {todayTodos.length > 0 && (
        <>
          <h2>Today</h2>
          <ul>
            {todayTodos.map(todo => (
              <li key={todo.id}>
                <input
                  type="checkbox"
                  checked={todo.completed}
                  onChange={() => toggleTodo(todo.id)}
                />
                <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                  {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                </span>
                <button onClick={() => deleteTodo(todo.id)}>Delete</button>
              </li>
            ))}
          </ul>
        </>
      )}
      {tomorrowTodos.length > 0 && (
        <>
          <h2>Tomorrow</h2>
          <ul>
            {tomorrowTodos.map(todo => (
              <li key={todo.id}>
                <input
                  type="checkbox"
                  checked={todo.completed}
                  onChange={() => toggleTodo(todo.id)}
                />
                <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                  {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                </span>
                <button onClick={() => deleteTodo(todo.id)}>Delete</button>
              </li>
            ))}
          </ul>
        </>
      )}
      {upcomingTodos.length > 0 && (
        <>
          <h2>Upcoming</h2>
          <ul>
            {upcomingTodos.map(todo => (
              <li key={todo.id}>
                <input
                  type="checkbox"
                  checked={todo.completed}
                  onChange={() => toggleTodo(todo.id)}
                />
                <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                  {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                </span>
                <button onClick={() => deleteTodo(todo.id)}>Delete</button>
              </li>
            ))}
          </ul>
        </>
      )}
    </div>
  )
=======
  return (
    <div className="App">
      <button className="dark-mode-toggle" onClick={toggleDarkMode}>
        {darkMode ? '☀️' : '🌙'}
      </button>
      <h1>To-Do List</h1>
      <div className="import-export-buttons">
        <button onClick={exportTodos}>Export Todos</button>
        <button onClick={() => fileInputRef.current?.click()}>Import Todos</button>
        <input
          type="file"
          ref={fileInputRef}
          style={{ display: 'none' }}
          onChange={importTodos}
          accept=".json"
        />
      </div>
      <form onSubmit={addTodo}>
        <input
          type="text"
          value={newTodo}
          onChange={(e) => setNewTodo(e.target.value)}
          placeholder="Add a new todo"
        />
        <input
          type="date"
          value={dueDate}
          onChange={(e) => setDueDate(e.target.value)}
        />
        <button type="submit">Add</button>
      </form>
      <DragDropContext onDragEnd={onDragEnd}>
        <Droppable droppableId="todos">
          {(provided) => (
            <div {...provided.droppableProps} ref={provided.innerRef}>
              {todayTodos.length > 0 && (
                <>
                  <h2>Today</h2>
                  <ul>
                    {todayTodos.map((todo, index) => (
                      <Draggable key={todo.id} draggableId={todo.id.toString()} index={index}>
                        {(provided) => (
                          <li
                            ref={provided.innerRef}
                            {...provided.draggableProps}
                            {...provided.dragHandleProps}
                          >
                            <input
                              type="checkbox"
                              checked={todo.completed}
                              onChange={() => toggleTodo(todo.id)}
                            />
                            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                              {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                            </span>
                            <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                          </li>
                        )}
                      </Draggable>
                    ))}
                  </ul>
                </>
              )}
              {tomorrowTodos.length > 0 && (
                <>
                  <h2>Tomorrow</h2>
                  <ul>
                    {tomorrowTodos.map((todo, index) => (
                      <Draggable key={todo.id} draggableId={todo.id.toString()} index={index + todayTodos.length}>
                        {(provided) => (
                          <li
                            ref={provided.innerRef}
                            {...provided.draggableProps}
                            {...provided.dragHandleProps}
                          >
                            <input
                              type="checkbox"
                              checked={todo.completed}
                              onChange={() => toggleTodo(todo.id)}
                            />
                            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                              {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                            </span>
                            <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                          </li>
                        )}
                      </Draggable>
                    ))}
                  </ul>
                </>
              )}
              {upcomingTodos.length > 0 && (
                <>
                  <h2>Upcoming</h2>
                  <ul>
                    {upcomingTodos.map((todo, index) => (
                      <Draggable key={todo.id} draggableId={todo.id.toString()} index={index + todayTodos.length + tomorrowTodos.length}>
                        {(provided) => (
                          <li
                            ref={provided.innerRef}
                            {...provided.draggableProps}
                            {...provided.dragHandleProps}
                          >
                            <input
                              type="checkbox"
                              checked={todo.completed}
                              onChange={() => toggleTodo(todo.id)}
                            />
                            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                              {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                            </span>
                            <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                          </li>
                        )}
                      </Draggable>
                    ))}
                  </ul>
                </>
              )}
              {provided.placeholder}
            </div>
          )}
        </Droppable>
      </DragDropContext>
    </div>
  )
>>>>>>> REPLACE

These changes will implement the drag and drop functionality for reordering todos. However, to make this work, we need to install the react-beautiful-dnd package. You can do this by running the following command in your terminal:

npm install react-beautiful-dnd @types/react-beautiful-dnd

After making these changes and installing the package, you should be able to drag and drop todos to reorder them within and across the different sections (Today, Tomorrow, and Upcoming).

Note that this implementation allows dragging todos between different sections. If you want to restrict dragging to within each section, you'll need to create separate Droppable areas for each section and adjust the onDragEnd function accordingly.

[larryhudson-aider-github[bot]]

I've updated the PR based on the review comment.

Certainly! I'll add the 'react-beautiful-dnd' dependency to the package.json file. Here's the change:

package.json

<<<<<<< SEARCH
{
  "name": "vite-todo-list",
  "private": true,
  "version": "0.0.0",
  "type": "module",
  "scripts": {
    "dev": "vite",
    "build": "tsc -b && vite build",
    "lint": "eslint .",
    "preview": "vite preview"
  },
  "dependencies": {
    "react": "^18.3.1",
    "react-dom": "^18.3.1"
  },
=======
{
  "name": "vite-todo-list",
  "private": true,
  "version": "0.0.0",
  "type": "module",
  "scripts": {
    "dev": "vite",
    "build": "tsc -b && vite build",
    "lint": "eslint .",
    "preview": "vite preview"
  },
  "dependencies": {
    "react": "^18.3.1",
    "react-dom": "^18.3.1",
    "react-beautiful-dnd": "^13.1.1"
  },
>>>>>>> REPLACE

This change adds the 'react-beautiful-dnd' dependency to the package.json file. After making this change, you'll need to install the new dependency. Here's the command to do that:

npm install

Or if you're using Yarn:

yarn

This will install the new dependency based on the updated package.json file.

[larryhudson-aider-github[bot]]

I've updated the PR based on the review comment.

To address the issue with dragging and dropping not working, we need to modify the App.tsx file. The problem is likely caused by the id property of the Todo interface being a number, while react-beautiful-dnd expects string IDs. Let's update the Todo interface and adjust the code accordingly.

Here are the necessary changes:

src/App.tsx

<<<<<<< SEARCH
interface Todo {
  id: number;
  text: string;
  completed: boolean;
  dueDate: Date;
}
=======
interface Todo {
  id: string;
  text: string;
  completed: boolean;
  dueDate: Date;
}
>>>>>>> REPLACE

Now, let's update the addTodo function to use a string ID:

src/App.tsx

<<<<<<< SEARCH
  const addTodo = (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault()
    if (newTodo.trim() !== '') {
      const newTodos = [...todos, { id: Date.now(), text: newTodo, completed: false, dueDate: new Date(dueDate) }]
      setTodos(newTodos)
      setNewTodo('')
      setDueDate(new Date().toISOString().split('T')[0])
    }
  }
=======
  const addTodo = (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault()
    if (newTodo.trim() !== '') {
      const newTodos = [...todos, { id: Date.now().toString(), text: newTodo, completed: false, dueDate: new Date(dueDate) }]
      setTodos(newTodos)
      setNewTodo('')
      setDueDate(new Date().toISOString().split('T')[0])
    }
  }
>>>>>>> REPLACE

Next, let's update the toggleTodo and deleteTodo functions to work with string IDs:

src/App.tsx

<<<<<<< SEARCH
  const toggleTodo = (id: number) => {
    const newTodos = todos.map(todo =>
      todo.id === id ? { ...todo, completed: !todo.completed } : todo
    )
    setTodos(newTodos)
  }

  const deleteTodo = (id: number) => {
    const newTodos = todos.filter(todo => todo.id !== id)
    setTodos(newTodos)
    if (newTodos.length === 0) {
      localStorage.removeItem('todos')
    }
  }
=======
  const toggleTodo = (id: string) => {
    const newTodos = todos.map(todo =>
      todo.id === id ? { ...todo, completed: !todo.completed } : todo
    )
    setTodos(newTodos)
  }

  const deleteTodo = (id: string) => {
    const newTodos = todos.filter(todo => todo.id !== id)
    setTodos(newTodos)
    if (newTodos.length === 0) {
      localStorage.removeItem('todos')
    }
  }
>>>>>>> REPLACE

Finally, let's update the loadTodosFromLocalStorage function to ensure it uses string IDs:

src/App.tsx

<<<<<<< SEARCH
  const loadTodosFromLocalStorage = (): Todo[] => {
    const storedTodos = localStorage.getItem('todos')
    if (storedTodos) {
      return JSON.parse(storedTodos).map((todo: Todo) => ({
        ...todo,
        dueDate: new Date(todo.dueDate)
      }))
    }
    return []
  }
=======
  const loadTodosFromLocalStorage = (): Todo[] => {
    const storedTodos = localStorage.getItem('todos')
    if (storedTodos) {
      return JSON.parse(storedTodos).map((todo: Todo) => ({
        ...todo,
        id: todo.id.toString(),
        dueDate: new Date(todo.dueDate)
      }))
    }
    return []
  }
>>>>>>> REPLACE

These changes should resolve the issue with dragging and dropping. The error message you were seeing was because react-beautiful-dnd was expecting string IDs, but it was receiving number IDs. By converting all IDs to strings, we ensure compatibility with the library.

After making these changes, you should be able to drag and drop todos without any console errors. The functionality should work as expected.

To test these changes, you can run the development server:

npm run dev

This will start the Vite development server, and you can test the drag and drop functionality in your browser.

[larryhudson-aider-github[bot]]

I've updated the PR based on the review comment.

To address the review comment, we can switch to a simpler drag-and-drop library called react-dnd. This library provides more flexibility and allows us to create custom drag handles easily. Here are the changes we need to make:

First, let's update the package.json file to replace react-beautiful-dnd with react-dnd:

package.json

<<<<<<< SEARCH
  "dependencies": {
    "react": "^18.3.1",
    "react-dom": "^18.3.1",
    "react-beautiful-dnd": "^13.1.1"
  },
=======
  "dependencies": {
    "react": "^18.3.1",
    "react-dom": "^18.3.1",
    "react-dnd": "^16.0.1",
    "react-dnd-html5-backend": "^16.0.1"
  },
>>>>>>> REPLACE

Now, let's update the App.tsx file to use react-dnd:

src/App.tsx

<<<<<<< SEARCH
import { useState, useEffect, useRef } from 'react'
import { DragDropContext, Droppable, Draggable, DropResult } from 'react-beautiful-dnd'
import './App.css'

interface Todo {
  id: string;
  text: string;
  completed: boolean;
  dueDate: Date;
}

function App() {
=======
import { useState, useEffect, useRef, useCallback } from 'react'
import { DndProvider, useDrag, useDrop } from 'react-dnd'
import { HTML5Backend } from 'react-dnd-html5-backend'
import './App.css'

interface Todo {
  id: string;
  text: string;
  completed: boolean;
  dueDate: Date;
}

interface DraggableItemProps {
  id: string;
  index: number;
  moveItem: (dragIndex: number, hoverIndex: number) => void;
  children: React.ReactNode;
}

const DraggableItem: React.FC<DraggableItemProps> = ({ id, index, moveItem, children }) => {
  const ref = useRef<HTMLLIElement>(null)

  const [, drop] = useDrop({
    accept: 'TODO',
    hover(item: { id: string; index: number }, monitor) {
      if (!ref.current) {
        return
      }
      const dragIndex = item.index
      const hoverIndex = index
      if (dragIndex === hoverIndex) {
        return
      }
      moveItem(dragIndex, hoverIndex)
      item.index = hoverIndex
    },
  })

  const [{ isDragging }, drag, preview] = useDrag({
    type: 'TODO',
    item: () => ({ id, index }),
    collect: (monitor) => ({
      isDragging: monitor.isDragging(),
    }),
  })

  drag(drop(ref))

  return (
    <li ref={preview} style={{ opacity: isDragging ? 0.5 : 1 }}>
      <span ref={ref} className="drag-handle">☰</span>
      {children}
    </li>
  )
}

function App() {
>>>>>>> REPLACE

Now, let's update the main part of the App component:

src/App.tsx

<<<<<<< SEARCH
  const onDragEnd = (result: DropResult) => {
    if (!result.destination) {
      return;
    }

    const items = Array.from(todos);
    const [reorderedItem] = items.splice(result.source.index, 1);
    items.splice(result.destination.index, 0, reorderedItem);

    setTodos(items);
  }

=======
  const moveItem = useCallback((dragIndex: number, hoverIndex: number) => {
    setTodos((prevTodos) => {
      const newTodos = [...prevTodos];
      const draggedItem = newTodos[dragIndex];
      newTodos.splice(dragIndex, 1);
      newTodos.splice(hoverIndex, 0, draggedItem);
      return newTodos;
    });
  }, []);

>>>>>>> REPLACE

Finally, let's update the rendering part of the component:

src/App.tsx

<<<<<<< SEARCH
      <DragDropContext onDragEnd={onDragEnd}>
        <Droppable droppableId="todos">
          {(provided) => (
            <div {...provided.droppableProps} ref={provided.innerRef}>
              {todayTodos.length > 0 && (
                <>
                  <h2>Today</h2>
                  <ul>
                    {todayTodos.map((todo, index) => (
                      <Draggable key={todo.id} draggableId={todo.id.toString()} index={index}>
                        {(provided) => (
                          <li
                            ref={provided.innerRef}
                            {...provided.draggableProps}
                            {...provided.dragHandleProps}
                          >
                            <input
                              type="checkbox"
                              checked={todo.completed}
                              onChange={() => toggleTodo(todo.id)}
                            />
                            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                              {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                            </span>
                            <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                          </li>
                        )}
                      </Draggable>
                    ))}
                  </ul>
                </>
              )}
              {tomorrowTodos.length > 0 && (
                <>
                  <h2>Tomorrow</h2>
                  <ul>
                    {tomorrowTodos.map((todo, index) => (
                      <Draggable key={todo.id} draggableId={todo.id.toString()} index={index + todayTodos.length}>
                        {(provided) => (
                          <li
                            ref={provided.innerRef}
                            {...provided.draggableProps}
                            {...provided.dragHandleProps}
                          >
                            <input
                              type="checkbox"
                              checked={todo.completed}
                              onChange={() => toggleTodo(todo.id)}
                            />
                            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                              {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                            </span>
                            <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                          </li>
                        )}
                      </Draggable>
                    ))}
                  </ul>
                </>
              )}
              {upcomingTodos.length > 0 && (
                <>
                  <h2>Upcoming</h2>
                  <ul>
                    {upcomingTodos.map((todo, index) => (
                      <Draggable key={todo.id} draggableId={todo.id.toString()} index={index + todayTodos.length + tomorrowTodos.length}>
                        {(provided) => (
                          <li
                            ref={provided.innerRef}
                            {...provided.draggableProps}
                            {...provided.dragHandleProps}
                          >
                            <input
                              type="checkbox"
                              checked={todo.completed}
                              onChange={() => toggleTodo(todo.id)}
                            />
                            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                              {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                            </span>
                            <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                          </li>
                        )}
                      </Draggable>
                    ))}
                  </ul>
                </>
              )}
              {provided.placeholder}
            </div>
          )}
        </Droppable>
      </DragDropContext>
=======
      <DndProvider backend={HTML5Backend}>
        {todayTodos.length > 0 && (
          <>
            <h2>Today</h2>
            <ul>
              {todayTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index} moveItem={moveItem}>
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
        {tomorrowTodos.length > 0 && (
          <>
            <h2>Tomorrow</h2>
            <ul>
              {tomorrowTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index + todayTodos.length} moveItem={moveItem}>
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
        {upcomingTodos.length > 0 && (
          <>
            <h2>Upcoming</h2>
            <ul>
              {upcomingTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index + todayTodos.length + tomorrowTodos.length} moveItem={moveItem}>
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
      </DndProvider>
>>>>>>> REPLACE

These changes replace react-beautiful-dnd with react-dnd, which provides a simpler and more flexible drag-and-drop implementation. The new implementation includes a custom drag handle (☰) for each todo item, addressing the reviewer's request for a handle to drag.

After making these changes, you'll need to install the new dependencies. Run the following command in your terminal:

npm install react-dnd react-dnd-html5-backend

This implementation should provide a more straightforward drag-and-drop functionality with visible handles for dragging, addressing the reviewer's concerns.

[larryhudson-aider-github[bot]]

I've updated the PR based on the review comment.

To address the review comment, we need to modify the drag and drop functionality so that items can only be reordered within their own group (Today, Tomorrow, or Upcoming). We'll do this by changing the DraggableItem component and the moveItem function. Here are the necessary changes:

src/App.tsx

<<<<<<< SEARCH
interface DraggableItemProps {
  id: string;
  index: number;
  moveItem: (dragIndex: number, hoverIndex: number) => void;
  children: React.ReactNode;
}

const DraggableItem: React.FC<DraggableItemProps> = ({ id, index, moveItem, children }) => {
  const ref = useRef<HTMLLIElement>(null)

  const [, drop] = useDrop({
    accept: 'TODO',
    hover(item: { id: string; index: number }, monitor) {
      if (!ref.current) {
        return
      }
      const dragIndex = item.index
      const hoverIndex = index
      if (dragIndex === hoverIndex) {
        return
      }
      moveItem(dragIndex, hoverIndex)
      item.index = hoverIndex
    },
  })

  const [{ isDragging }, drag, preview] = useDrag({
    type: 'TODO',
    item: () => ({ id, index }),
    collect: (monitor) => ({
      isDragging: monitor.isDragging(),
    }),
  })

  drag(drop(ref))

  return (
    <li ref={preview} style={{ opacity: isDragging ? 0.5 : 1 }}>
      <span ref={ref} className="drag-handle">☰</span>
      {children}
    </li>
  )
}
=======
interface DraggableItemProps {
  id: string;
  index: number;
  moveItem: (dragIndex: number, hoverIndex: number) => void;
  children: React.ReactNode;
  group: 'today' | 'tomorrow' | 'upcoming';
}

const DraggableItem: React.FC<DraggableItemProps> = ({ id, index, moveItem, children, group }) => {
  const ref = useRef<HTMLLIElement>(null)

  const [, drop] = useDrop({
    accept: `TODO_${group.toUpperCase()}`,
    hover(item: { id: string; index: number }, monitor) {
      if (!ref.current) {
        return
      }
      const dragIndex = item.index
      const hoverIndex = index
      if (dragIndex === hoverIndex) {
        return
      }
      moveItem(dragIndex, hoverIndex)
      item.index = hoverIndex
    },
  })

  const [{ isDragging }, drag, preview] = useDrag({
    type: `TODO_${group.toUpperCase()}`,
    item: () => ({ id, index }),
    collect: (monitor) => ({
      isDragging: monitor.isDragging(),
    }),
  })

  drag(drop(ref))

  return (
    <li ref={preview} style={{ opacity: isDragging ? 0.5 : 1 }}>
      <span ref={ref} className="drag-handle">☰</span>
      {children}
    </li>
  )
}
>>>>>>> REPLACE

Now, let's update the moveItem function and the rendering of todo lists:

src/App.tsx

<<<<<<< SEARCH
  const moveItem = useCallback((dragIndex: number, hoverIndex: number) => {
    setTodos((prevTodos) => {
      const newTodos = [...prevTodos];
      const draggedItem = newTodos[dragIndex];
      newTodos.splice(dragIndex, 1);
      newTodos.splice(hoverIndex, 0, draggedItem);
      return newTodos;
    });
  }, []);
=======
  const moveItem = useCallback((group: 'today' | 'tomorrow' | 'upcoming', dragIndex: number, hoverIndex: number) => {
    setTodos((prevTodos) => {
      const newTodos = [...prevTodos];
      let groupTodos: Todo[];
      if (group === 'today') {
        groupTodos = newTodos.filter(isDueOrOverdue);
      } else if (group === 'tomorrow') {
        groupTodos = newTodos.filter(todo => isTomorrow(todo.dueDate));
      } else {
        groupTodos = newTodos.filter(todo => !isDueOrOverdue(todo) && !isTomorrow(todo.dueDate));
      }

      const [draggedItem] = groupTodos.splice(dragIndex, 1);
      groupTodos.splice(hoverIndex, 0, draggedItem);

      const updatedTodos = newTodos.map(todo => {
        const index = groupTodos.findIndex(t => t.id === todo.id);
        return index !== -1 ? groupTodos[index] : todo;
      });

      return updatedTodos;
    });
  }, []);
>>>>>>> REPLACE

Now, let's update the rendering of todo lists:

src/App.tsx

<<<<<<< SEARCH
      <DndProvider backend={HTML5Backend}>
        {todayTodos.length > 0 && (
          <>
            <h2>Today</h2>
            <ul>
              {todayTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index} moveItem={moveItem}>
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
        {tomorrowTodos.length > 0 && (
          <>
            <h2>Tomorrow</h2>
            <ul>
              {tomorrowTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index + todayTodos.length} moveItem={moveItem}>
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
        {upcomingTodos.length > 0 && (
          <>
            <h2>Upcoming</h2>
            <ul>
              {upcomingTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index + todayTodos.length + tomorrowTodos.length} moveItem={moveItem}>
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
      </DndProvider>
=======
      <DndProvider backend={HTML5Backend}>
        {todayTodos.length > 0 && (
          <>
            <h2>Today</h2>
            <ul>
              {todayTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index} moveItem={(dragIndex, hoverIndex) => moveItem('today', dragIndex, hoverIndex)} group="today">
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
        {tomorrowTodos.length > 0 && (
          <>
            <h2>Tomorrow</h2>
            <ul>
              {tomorrowTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index} moveItem={(dragIndex, hoverIndex) => moveItem('tomorrow', dragIndex, hoverIndex)} group="tomorrow">
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
        {upcomingTodos.length > 0 && (
          <>
            <h2>Upcoming</h2>
            <ul>
              {upcomingTodos.map((todo, index) => (
                <DraggableItem key={todo.id} id={todo.id} index={index} moveItem={(dragIndex, hoverIndex) => moveItem('upcoming', dragIndex, hoverIndex)} group="upcoming">
                  <input
                    type="checkbox"
                    checked={todo.completed}
                    onChange={() => toggleTodo(todo.id)}
                  />
                  <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
                    {todo.text} (Due: {todo.dueDate.toLocaleDateString()})
                  </span>
                  <button onClick={() => deleteTodo(todo.id)}>Delete</button>
                </DraggableItem>
              ))}
            </ul>
          </>
        )}
      </DndProvider>
>>>>>>> REPLACE

These changes will ensure that items can only be dragged and reordered within their own group (Today, Tomorrow, or Upcoming). The drag and drop functionality is now separate for each group, addressing the issue mentioned in the review comment.

To test these changes, you can run the development server:

npm run dev

This will start the development server, and you can view the updated Todo list application in your browser. You should now be able to drag and drop items within their respective groups without affecting items in other groups.

[larryhudson-aider-github[bot]]

I've updated the PR based on the review comment.

To address the issue with the drag and drop functionality not properly reordering items, we need to modify the moveItem function in the App component. The current implementation is not correctly updating the order of todos within their respective groups. Let's update the App.tsx file to fix this issue.

src/App.tsx

<<<<<<< SEARCH
  const moveItem = useCallback((group: 'today' | 'tomorrow' | 'upcoming', dragIndex: number, hoverIndex: number) => {
    setTodos((prevTodos) => {
      const newTodos = [...prevTodos];
      let groupTodos: Todo[];
      if (group === 'today') {
        groupTodos = newTodos.filter(isDueOrOverdue);
      } else if (group === 'tomorrow') {
        groupTodos = newTodos.filter(todo => isTomorrow(todo.dueDate));
      } else {
        groupTodos = newTodos.filter(todo => !isDueOrOverdue(todo) && !isTomorrow(todo.dueDate));
      }

      const [draggedItem] = groupTodos.splice(dragIndex, 1);
      groupTodos.splice(hoverIndex, 0, draggedItem);

      const updatedTodos = newTodos.map(todo => {
        const index = groupTodos.findIndex(t => t.id === todo.id);
        return index !== -1 ? groupTodos[index] : todo;
      });

      return updatedTodos;
    });
  }, []);
=======
  const moveItem = useCallback((group: 'today' | 'tomorrow' | 'upcoming', dragIndex: number, hoverIndex: number) => {
    setTodos((prevTodos) => {
      const newTodos = [...prevTodos];
      let groupTodos: Todo[];
      if (group === 'today') {
        groupTodos = newTodos.filter(isDueOrOverdue);
      } else if (group === 'tomorrow') {
        groupTodos = newTodos.filter(todo => isTomorrow(todo.dueDate));
      } else {
        groupTodos = newTodos.filter(todo => !isDueOrOverdue(todo) && !isTomorrow(todo.dueDate));
      }

      const [draggedItem] = groupTodos.splice(dragIndex, 1);
      groupTodos.splice(hoverIndex, 0, draggedItem);

      // Create a map of todo IDs to their new positions within the group
      const todoPositions = new Map(groupTodos.map((todo, index) => [todo.id, index]));

      // Update the order of todos in the original array
      newTodos.sort((a, b) => {
        const posA = todoPositions.get(a.id);
        const posB = todoPositions.get(b.id);
        if (posA !== undefined && posB !== undefined) {
          return posA - posB;
        }
        return 0;
      });

      return newTodos;
    });
  }, []);
>>>>>>> REPLACE

This change modifies the moveItem function to correctly update the order of todos within their respective groups. The new implementation creates a map of todo IDs to their new positions within the group and then sorts the entire newTodos array based on these positions. This ensures that the order of todos is preserved across different groups while allowing for reordering within each group.

After making this change, the drag and drop functionality should work properly, allowing users to reorder items within their respective groups (Today, Tomorrow, and Upcoming).

To test these changes, you can run the development server using the following command:

npm run dev

This will start the development server, and you can open the application in your browser to test the drag and drop functionality.