Complete task use context

README.md

@@ -6,24 +6,24 @@ Implement a simple [TODO app](https://mate-academy.github.io/react_todo-app/) th
 
 ![todoapp](./description/todoapp.gif)
 
-1. Learn the markup in `App.tsx`.
-2. Show only a field to create a new todo if there are no todos yet.
-3. Use React Context to manage todos.
-4. Each todo should have an `id` (you can use `+new Date()`), a `title`, and a `completed` status (`false` by default).
-5. Save `todos` to `localStorage` using `JSON.stringify` after each change.
-6. Display the number of not completed todos in `TodoApp`.
-7. Implement filtering by status (`All`/`Active`/`Completed`).
-8. Add the ability to delete a todo using the `x` button.
-9. Implement the `clearCompleted` button (disabled if there are no completed todos).
-10. Implement individual todo status toggling.
-11. Implement the `toggleAll` checkbox (checked only when all todos are completed).
-12. Enable inline editing for the `TodoItem`:
+1. - Learn the markup in `App.tsx`.
+2. - Show only a field to create a new todo if there are no todos yet.
+3. - Use React Context to manage todos.
+4. - Each todo should have an `id` (you can use `+new Date()`), a `title`, and a `completed` status (`false` by default).
+5. - Save `todos` to `localStorage` using `JSON.stringify` after each change.
+6. - Display the number of not completed todos in `TodoApp`.
+7. - Implement filtering by status (`All`/`Active`/`Completed`).
+8. - Add the ability to delete a todo using the `x` button.
+9. - Implement the `clearCompleted` button (disabled if there are no completed todos).
+10. - Implement individual todo status toggling.
+11. - Implement the `toggleAll` checkbox (checked only when all todos are completed).
+12. - Enable inline editing for the `TodoItem`:
     - Double-clicking on the todo title shows a text field instead of the title and `deleteButton`.
     - Form submission saves changes (press `Enter` to save).
     - Trim the saved text.
     - Delete the todo if the title is empty.
     - Save changes `onBlur`.
-    - Pressing `Escape` cancels editing (use `onKeyUp` and check if `event.key === 'Escape'`).
+    + Pressing `Escape` cancels editing (use `onKeyUp` and check if `event.key === 'Escape'`).
 
 ![todoedit](./description/edittodo.gif)
 
@@ -33,4 +33,4 @@ Implement a simple [TODO app](https://mate-academy.github.io/react_todo-app/) th
 - Implement a solution following the [React task guidelines](https://github.com/mate-academy/react_task-guideline#react-tasks-guideline).
 - Use the [React TypeScript cheat sheet](https://mate-academy.github.io/fe-program/js/extra/react-typescript).
 - Open another terminal and run tests with `npm test` to ensure your solution is correct.
-- Replace `<your_account>` with your GitHub username in the [DEMO LINK](https://<your_account>.github.io/react_todo-app/) and add it to the PR description.
+- Replace `<your_account>` with your GitHub username in the [DEMO LINK](https://RVDotsenko.github.io/react_todo-app/) and add it to the PR description.

src/App.tsx

@@ -1,156 +1,186 @@
 /* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useContext, useEffect, useRef, useState } from 'react';
+import cn from 'classnames';
+import { DispatchContext, StateContext } from './context/TodoContext';
+import { TodoComponent } from './components/Todo';
 
 export const App: React.FC = () => {
+  const dispatch = useContext(DispatchContext);
+  const { todos, filteredTodos, todosToComplete, selectedFilter } =
+    useContext(StateContext);
+
+  const [newTodoTitle, setNewTodoTitle] = useState('');
+
+  const inputRef = useRef<HTMLInputElement>(null);
+  const isHydrated = useRef(false);
+
+  /* Hydrate todos from local storage */
+  useEffect(() => {
+    const localTodos = localStorage.getItem('todos');
+
+    if (localTodos) {
+      dispatch({
+        type: 'HYDRATE_TODOS',
+        payload: JSON.parse(localTodos),
+      });
+    }
+
+    isHydrated.current = true;
+  }, [dispatch]);
+
+  /* Save todos to local storage */
+  useEffect(() => {
+    if (!isHydrated.current) {
+      return;
+    }
+
+    localStorage.setItem('todos', JSON.stringify(todos));
+  }, [todos]);
+
+  const handleSubmit = (event?: React.FormEvent<HTMLFormElement>) => {
+    event?.preventDefault();
+
+    const trimmedTitle = newTodoTitle.trim();
+
+    if (trimmedTitle.length > 0) {
+      dispatch({ type: 'ADD_TODO', payload: { title: trimmedTitle } });
+      setNewTodoTitle('');
+
+      if (inputRef.current) {
+        inputRef.current.focus();
+      }
+    }
+  };
+
+  const handleGlobalClick = (e: React.MouseEvent<HTMLDivElement>) => {
+    const target = e.target as HTMLElement;
+
+    if (
+      target.closest('[data-cy="TodoDelete"]') ||
+      target.closest('[data-cy="ClearCompletedButton"]')
+    ) {
+      inputRef.current?.focus();
+    }
+  };
+
   return (
-    <div className="todoapp">
+    <div className="todoapp" onClick={e => handleGlobalClick(e)}>
       <h1 className="todoapp__title">todos</h1>
 
       <div className="todoapp__content">
         <header className="todoapp__header">
-          {/* this button should have `active` class only if all todos are completed */}
-          <button
-            type="button"
-            className="todoapp__toggle-all active"
-            data-cy="ToggleAllButton"
-          />
-
-          {/* Add a todo on form submit */}
-          <form>
+          {todos.length !== 0 && (
+            <button
+              type="button"
+              className={cn('todoapp__toggle-all', {
+                active: todosToComplete === 0 && todos.length !== 0,
+              })}
+              data-cy="ToggleAllButton"
+              onClick={() =>
+                dispatch({
+                  type: 'CHECK_AS_COMPLETED',
+                  payload: {
+                    completed: todosToComplete === 0,
+                  },
+                })
+              }
+            />
+          )}
+
+          <form
+            onSubmit={event => handleSubmit(event)}
+            onBlur={() => handleSubmit()}
+          >
             <input
+              ref={inputRef}
               data-cy="NewTodoField"
               type="text"
               className="todoapp__new-todo"
               placeholder="What needs to be done?"
+              value={newTodoTitle}
+              onChange={event => setNewTodoTitle(event.target.value)}
+              autoFocus
             />
           </form>
         </header>
 
         <section className="todoapp__main" data-cy="TodoList">
-          {/* This is a completed todo */}
-          <div data-cy="Todo" className="todo completed">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-                checked
-              />
-            </label>
-
-            <span data-cy="TodoTitle" className="todo__title">
-              Completed Todo
-            </span>
-
-            {/* Remove button appears only on hover */}
-            <button type="button" className="todo__remove" data-cy="TodoDelete">
-              ×
-            </button>
-          </div>
-
-          {/* This todo is an active todo */}
-          <div data-cy="Todo" className="todo">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-              />
-            </label>
-
-            <span data-cy="TodoTitle" className="todo__title">
-              Not Completed Todo
-            </span>
-
-            <button type="button" className="todo__remove" data-cy="TodoDelete">
-              ×
-            </button>
-          </div>
-
-          {/* This todo is being edited */}
-          <div data-cy="Todo" className="todo">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-              />
-            </label>
-
-            {/* This form is shown instead of the title and remove button */}
-            <form>
-              <input
-                data-cy="TodoTitleField"
-                type="text"
-                className="todo__title-field"
-                placeholder="Empty todo will be deleted"
-                value="Todo is being edited now"
-              />
-            </form>
-          </div>
-
-          {/* This todo is in loadind state */}
-          <div data-cy="Todo" className="todo">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-              />
-            </label>
-
-            <span data-cy="TodoTitle" className="todo__title">
-              Todo is being saved now
-            </span>
-
-            <button type="button" className="todo__remove" data-cy="TodoDelete">
-              ×
-            </button>
-          </div>
+          {filteredTodos.map(todo => (
+            <TodoComponent key={todo.id} todo={todo} />
+          ))}
         </section>
 
-        {/* Hide the footer if there are no todos */}
-        <footer className="todoapp__footer" data-cy="Footer">
-          <span className="todo-count" data-cy="TodosCounter">
-            3 items left
-          </span>
-
-          {/* Active link should have the 'selected' class */}
-          <nav className="filter" data-cy="Filter">
-            <a
-              href="#/"
-              className="filter__link selected"
-              data-cy="FilterLinkAll"
-            >
-              All
-            </a>
-
-            <a
-              href="#/active"
-              className="filter__link"
-              data-cy="FilterLinkActive"
-            >
-              Active
-            </a>
+        {todos.length !== 0 && (
+          <footer className="todoapp__footer" data-cy="Footer">
+            <span className="todo-count" data-cy="TodosCounter">
+              {`${todosToComplete} items left`}
+            </span>
 
-            <a
-              href="#/completed"
-              className="filter__link"
-              data-cy="FilterLinkCompleted"
+            <nav className="filter" data-cy="Filter">
+              <a
+                href="#/"
+                className={cn('filter__link', {
+                  selected: selectedFilter === 'all',
+                })}
+                data-cy="FilterLinkAll"
+                onClick={() => {
+                  dispatch({
+                    type: 'SET_SELECTED_FILTER',
+                    payload: { selectedFilter: 'all' },
+                  });
+                }}
+              >
+                All
+              </a>
+
+              <a
+                href="#/active"
+                className={cn('filter__link', {
+                  selected: selectedFilter === 'active',
+                })}
+                data-cy="FilterLinkActive"
+                onClick={() => {
+                  dispatch({
+                    type: 'SET_SELECTED_FILTER',
+                    payload: { selectedFilter: 'active' },
+                  });
+                }}
+              >
+                Active
+              </a>
+
+              <a
+                href="#/completed"
+                className={cn('filter__link', {
+                  selected: selectedFilter === 'completed',
+                })}
+                data-cy="FilterLinkCompleted"
+                onClick={() => {
+                  dispatch({
+                    type: 'SET_SELECTED_FILTER',
+                    payload: {
+                      selectedFilter: 'completed',
+                    },
+                  });
+                }}
+              >
+                Completed
+              </a>
+            </nav>
+
+            <button
+              type="button"
+              className={cn('todoapp__clear-completed', {
+                'is-invisible': todosToComplete === todos.length,
+              })}
+              disabled={todosToComplete === todos.length}
+              data-cy="ClearCompletedButton"
+              onClick={() => dispatch({ type: 'CLEAR_COMPLETED' })}
             >
-              Completed
-            </a>
-          </nav>
-
-          {/* this button should be disabled if there are no completed todos */}
-          <button
-            type="button"
-            className="todoapp__clear-completed"
-            data-cy="ClearCompletedButton"
-          >
-            Clear completed
-          </button>
-        </footer>
+              Clear completed
+            </button>
+          </footer>
+        )}
       </div>
     </div>
   );