add task solution

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://tonni004.github.io/react_todo-app/) and add it to the PR description.

package.json

@@ -14,7 +14,7 @@
   },
   "devDependencies": {
     "@cypress/react18": "^2.0.1",
-    "@mate-academy/scripts": "^1.8.5",
+    "@mate-academy/scripts": "^1.9.12",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/node": "^20.14.10",

src/App.tsx

@@ -1,157 +1,10 @@
 /* eslint-disable jsx-a11y/control-has-associated-label */
 import React from 'react';
-
-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>
-      </div>
-    </div>
-  );
-};
+import { TodosProvider } from './TodosContext';
+import { TodoApp } from './components/TodoApp';
+
+export const App: React.FC = () => (
+  <TodosProvider>
+    <TodoApp />
+  </TodosProvider>
+);

src/FocusContext.tsx

@@ -0,0 +1,54 @@
+import React, {
+  createContext,
+  useContext,
+  useRef,
+  useCallback,
+  useEffect,
+} from 'react';
+import { useTodos } from './TodosContext';
+
+interface FocusContextType {
+  focusInput: () => void;
+  inputRef: React.RefObject<HTMLInputElement>;
+}
+
+const FocusContext = createContext<FocusContextType | undefined>(undefined);
+
+export const FocusProvider: React.FC<{ children: React.ReactNode }> = ({
+  children,
+}) => {
+  const inputRef = useRef<HTMLInputElement>(null);
+  const { todos } = useTodos();
+
+  const focusInput = useCallback(() => {
+    if (inputRef.current) {
+      inputRef.current.focus();
+    }
+  }, []);
+
+  useEffect(() => {
+    if (todos.length) {
+      const input = document.querySelector(
+        '[data-cy="NewTodoField"]',
+      ) as HTMLInputElement;
+
+      input?.focus();
+    }
+  }, [todos.length]);
+
+  return (
+    <FocusContext.Provider value={{ focusInput, inputRef }}>
+      {children}
+    </FocusContext.Provider>
+  );
+};
+
+export const useFocus = () => {
+  const context = useContext(FocusContext);
+
+  if (!context) {
+    throw new Error('useFocus must be used within a FocusProvider');
+  }
+
+  return context;
+};

src/TodosContext.tsx

@@ -0,0 +1,93 @@
+import React, { createContext, useContext, useState, useEffect } from 'react';
+
+interface Todo {
+  id: number;
+  title: string;
+  completed: boolean;
+}
+
+interface TodosContextProps {
+  todos: Todo[];
+  addTodo: (title: string) => void;
+  toggleTodo: (id: number) => void;
+  deleteTodo: (id: number) => void;
+  clearCompleted: () => void;
+  updateTodo: (id: number, title: string) => void;
+  toggleAllTodos: () => void;
+}
+
+const TodosContext = createContext<TodosContextProps | undefined>(undefined);
+
+export const TodosProvider: React.FC<{ children: React.ReactNode }> = ({
+  children,
+}) => {
+  const [todos, setTodos] = useState<Todo[]>(() => {
+    const savedTodos = localStorage.getItem('todos');
+
+    return savedTodos ? JSON.parse(savedTodos) : [];
+  });
+
+  useEffect(() => {
+    localStorage.setItem('todos', JSON.stringify(todos));
+  }, [todos]);
+
+  const addTodo = (title: string) => {
+    setTodos([...todos, { id: +new Date(), title, completed: false }]);
+  };
+
+  const toggleTodo = (id: number) => {
+    setTodos(
+      todos.map(todo =>
+        todo.id === id ? { ...todo, completed: !todo.completed } : todo,
+      ),
+    );
+  };
+
+  const toggleAllTodos = () => {
+    const allCompleted = todos.every(todo => todo.completed);
+
+    setTodos(todos.map(todo => ({ ...todo, completed: !allCompleted })));
+  };
+
+  const deleteTodo = (id: number) => {
+    setTodos(todos.filter(todo => todo.id !== id));
+  };
+
+  const clearCompleted = () => {
+    setTodos(todos.filter(todo => !todo.completed));
+  };
+
+  const updateTodo = (id: number, title: string) => {
+    setTodos(
+      todos.map(todo =>
+        todo.id === id ? { ...todo, title: title.trim() || 'Untitled' } : todo,
+      ),
+    );
+  };
+
+  return (
+    <TodosContext.Provider
+      value={{
+        todos,
+        addTodo,
+        toggleTodo,
+        deleteTodo,
+        clearCompleted,
+        updateTodo,
+        toggleAllTodos,
+      }}
+    >
+      {children}
+    </TodosContext.Provider>
+  );
+};
+
+export const useTodos = () => {
+  const context = useContext(TodosContext);
+
+  if (!context) {
+    throw new Error('useTodos must be used within a TodosProvider');
+  }
+
+  return context;
+};