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README.md

@@ -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://redfield-mp.github.io/react_todo-app/) and add it to the PR description.

src/App.tsx

@@ -1,156 +1,23 @@
 /* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useContext } from 'react';
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { Footer } from './components/Footer';
+import { TodoContext } from './context/TodoContext';
 
 export const App: React.FC = () => {
+  const { todos } = useContext(TodoContext);
+  const hasTodos = todos.length > 0;
+
   return (
     <div className="todoapp">
       <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>
-            <input
-              data-cy="NewTodoField"
-              type="text"
-              className="todoapp__new-todo"
-              placeholder="What needs to be done?"
-            />
-          </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>
-        </section>
-
+        <Header />
+        {hasTodos && <TodoList />}
         {/* 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>
-
-            <a
-              href="#/completed"
-              className="filter__link"
-              data-cy="FilterLinkCompleted"
-            >
-              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>
+        {hasTodos && <Footer />}
       </div>
     </div>
   );

src/components/Footer.tsx

@@ -0,0 +1,70 @@
+import { useContext } from 'react';
+import { TodoContext } from '../context/TodoContext';
+import classNames from 'classnames';
+
+export const Footer = () => {
+  const { todos, filter, setFilter, clearCompleted } = useContext(TodoContext);
+  const notCompletedTodosCount = todos.filter(todo => !todo.completed).length;
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {notCompletedTodosCount} items left
+      </span>
+
+      {/* Active link should have the 'selected' class */}
+      <nav className="filter" data-cy="Filter">
+        <a
+          href="#/"
+          className={classNames('filter__link', { selected: filter === 'all' })}
+          data-cy="FilterLinkAll"
+          onClick={e => {
+            e.preventDefault();
+            setFilter('all');
+          }}
+        >
+          All
+        </a>
+
+        <a
+          href="#/active"
+          className={classNames('filter__link', {
+            selected: filter === 'active',
+          })}
+          data-cy="FilterLinkActive"
+          onClick={e => {
+            e.preventDefault();
+            setFilter('active');
+          }}
+        >
+          Active
+        </a>
+
+        <a
+          href="#/completed"
+          className={classNames('filter__link', {
+            selected: filter === 'completed',
+          })}
+          data-cy="FilterLinkCompleted"
+          onClick={e => {
+            e.preventDefault();
+            setFilter('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"
+        onClick={clearCompleted}
+        disabled={notCompletedTodosCount === todos.length}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/Header.tsx

@@ -0,0 +1,70 @@
+import React, { useContext, useState } from 'react';
+import { TodoContext } from '../context/TodoContext';
+import { Todo } from '../types/Todo';
+import classNames from 'classnames';
+
+export const Header = () => {
+  const [inputText, setInputText] = useState('');
+  const { todos, setTodos, toggleAll, inputRef, focusInput } =
+    useContext(TodoContext);
+
+  const allCompleted = todos.every(todo => todo.completed);
+
+  const handleSubmit = (e: React.FormEvent<HTMLFormElement>) => {
+    e.preventDefault();
+    const trimmedInputText = inputText.trim();
+
+    if (!trimmedInputText) {
+      return;
+    }
+
+    const newTodo: Todo = {
+      id: Date.now(),
+      title: trimmedInputText,
+      completed: false,
+    };
+
+    setTodos(prevTodos => [...prevTodos, newTodo]);
+
+    setInputText('');
+    focusInput();
+  };
+
+  return (
+    <header className="todoapp__header">
+      {/* this button should have `active` class only if all todos are completed */}
+      {todos.length > 0 && (
+        <button
+          type="button"
+          className={classNames('todoapp__toggle-all', {
+            active: allCompleted,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={toggleAll}
+        />
+      )}
+
+      {/* Add a todo on form submit */}
+      <form onSubmit={handleSubmit}>
+        <input
+          ref={inputRef}
+          data-cy="NewTodoField"
+          type="text"
+          className="todoapp__new-todo"
+          placeholder="What needs to be done?"
+          value={inputText}
+          onChange={(e: React.ChangeEvent<HTMLInputElement>) => {
+            setInputText(e.target.value);
+          }}
+          autoFocus
+          onKeyUp={e => {
+            if (e.key === 'Escape') {
+              setInputText('');
+              focusInput();
+            }
+          }}
+        />
+      </form>
+    </header>
+  );
+};