Implement todo app

src/App.tsx

@@ -1,156 +1,19 @@
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import { useTodoState } from './hooks/useTodoState';
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { Footer } from './components/Footer';
+
+export const App = () => {
+  const { hasTodos } = useTodoState();
 
-export const App: React.FC = () => {
   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>
-
-        {/* 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>
+        <Header />
+        <TodoList />
+        {hasTodos && <Footer />}
       </div>
     </div>
   );

src/components/CreateTodoForm/CreateTodoForm.tsx

@@ -0,0 +1,36 @@
+import { useState, FormEvent } from 'react';
+import { useTodoActions } from '../../hooks/useTodoActions';
+import { useInputRef } from '../../hooks/useInputRef';
+
+export const CreateTodoForm = () => {
+  const [title, setTitle] = useState('');
+  const { addTodo } = useTodoActions();
+  const inputRef = useInputRef();
+
+  const handleSubmit = (event: FormEvent) => {
+    event.preventDefault();
+    const normalizedTitle = title.trim();
+
+    if (!normalizedTitle) {
+      return;
+    }
+
+    addTodo(normalizedTitle);
+    setTitle('');
+  };
+
+  return (
+    <form onSubmit={handleSubmit}>
+      <input
+        ref={inputRef}
+        autoFocus
+        data-cy="NewTodoField"
+        type="text"
+        className="todoapp__new-todo"
+        placeholder="What needs to be done?"
+        value={title}
+        onChange={event => setTitle(event.target.value)}
+      />
+    </form>
+  );
+};

src/components/CreateTodoForm/index.ts

@@ -0,0 +1 @@
+export * from './CreateTodoForm';

src/components/EditTodoForm/EditTodoForm.tsx

@@ -0,0 +1,45 @@
+import { FormEvent, KeyboardEvent, useState } from 'react';
+
+interface Props {
+  title: string;
+  onChange: (title: string) => void;
+  onClose: () => void;
+}
+
+export const EditTodoForm = ({ title, onChange, onClose }: Props) => {
+  const [newTitle, setNewTitle] = useState(title);
+
+  const handleEscKeyDown = (event: KeyboardEvent<HTMLInputElement>) => {
+    if (event.key === 'Escape') {
+      onClose();
+    }
+  };
+
+  const handleChangeTitle = () => {
+    const normalizedTitle = newTitle.trim();
+
+    onChange(normalizedTitle);
+    onClose();
+  };
+
+  const handleSubmit = (event: FormEvent) => {
+    event.preventDefault();
+    handleChangeTitle();
+  };
+
+  return (
+    <form onSubmit={handleSubmit}>
+      <input
+        autoFocus
+        data-cy="TodoTitleField"
+        type="text"
+        className="todo__title-field"
+        placeholder="Empty todo will be deleted"
+        value={newTitle}
+        onChange={event => setNewTitle(event.target.value)}
+        onBlur={handleChangeTitle}
+        onKeyDown={handleEscKeyDown}
+      />
+    </form>
+  );
+};

src/components/EditTodoForm/index.ts

@@ -0,0 +1 @@
+export * from './EditTodoForm';

src/components/Footer/Footer.tsx

@@ -0,0 +1,71 @@
+import classNames from 'classnames';
+import { FilterOption } from '../../types/FilterOption';
+import { useTodoActions } from '../../hooks/useTodoActions';
+import { useTodoState } from '../../hooks/useTodoState';
+import { useFocusInput } from '../../hooks/useFocusInput';
+
+export const Footer = () => {
+  const { filter, activeTodosCount, completedTodosCount } = useTodoState();
+  const { setFilter, removeCompleted } = useTodoActions();
+  const focusInput = useFocusInput();
+
+  const hasCompletedTodos = completedTodosCount > 0;
+
+  const handleRemoveCompleted = () => {
+    removeCompleted();
+    focusInput();
+  };
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {activeTodosCount} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        <a
+          href="#/"
+          className={classNames('filter__link', {
+            selected: filter === FilterOption.ALL,
+          })}
+          data-cy="FilterLinkAll"
+          onClick={() => setFilter(FilterOption.ALL)}
+        >
+          All
+        </a>
+
+        <a
+          href="#/active"
+          className={classNames('filter__link', {
+            selected: filter === FilterOption.ACTIVE,
+          })}
+          data-cy="FilterLinkActive"
+          onClick={() => setFilter(FilterOption.ACTIVE)}
+        >
+          Active
+        </a>
+
+        <a
+          href="#/completed"
+          className={classNames('filter__link', {
+            selected: filter === FilterOption.COMPLETED,
+          })}
+          data-cy="FilterLinkCompleted"
+          onClick={() => setFilter(FilterOption.COMPLETED)}
+        >
+          Completed
+        </a>
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={!hasCompletedTodos}
+        onClick={handleRemoveCompleted}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/Footer/index.ts

@@ -0,0 +1 @@
+export * from './Footer';

src/components/Header/Header.tsx

@@ -0,0 +1,34 @@
+import classNames from 'classnames';
+import { useTodoState } from '../../hooks/useTodoState';
+import { useTodoActions } from '../../hooks/useTodoActions';
+import { useFocusInput } from '../../hooks/useFocusInput';
+import { CreateTodoForm } from '../CreateTodoForm';
+
+export const Header = () => {
+  const { hasTodos, allTodosCompleted } = useTodoState();
+  const { toggleAll } = useTodoActions();
+
+  const focusInput = useFocusInput();
+
+  const handleToggleAll = () => {
+    toggleAll();
+    focusInput();
+  };
+
+  return (
+    <header className="todoapp__header">
+      {hasTodos && (
+        <button
+          type="button"
+          className={classNames('todoapp__toggle-all', {
+            active: allTodosCompleted,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={handleToggleAll}
+        />
+      )}
+
+      <CreateTodoForm />
+    </header>
+  );
+};

src/components/Header/index.ts

@@ -0,0 +1 @@
+export * from './Header';

src/components/TodoList/TodoList.tsx

@@ -0,0 +1,14 @@
+import { useTodoState } from '../../hooks/useTodoState';
+import { TodoListItem } from '../TodoListItem';
+
+export const TodoList = () => {
+  const { filteredTodos } = useTodoState();
+
+  return (
+    <section className="todoapp__main" data-cy="TodoList">
+      {filteredTodos.map(todo => (
+        <TodoListItem key={todo.id} todo={todo} />
+      ))}
+    </section>
+  );
+};

src/components/TodoList/index.ts

@@ -0,0 +1 @@
+export * from './TodoList';