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

src/App.tsx

@@ -1,156 +1,38 @@
 /* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useEffect } from 'react';
+import { Header } from './components/Header';
+import { Main } from './components/Main';
+import { Footer } from './components/Footer';
 
-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>
+import { useDispatch } from './castomHuks/useDispatch';
+import { Todo } from './types/Todo';
+import { getTodosFromStorage } from './api/todos';
+import { useGlobalState } from './castomHuks/useGlobalState';
 
-            <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>
+export const App: React.FC = () => {
+  const { todos } = useGlobalState();
+  const dispatch = useDispatch();
 
-        {/* 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>
+  useEffect(() => {
+    const todosFromStorage = getTodosFromStorage();
 
-          {/* Active link should have the 'selected' class */}
-          <nav className="filter" data-cy="Filter">
-            <a
-              href="#/"
-              className="filter__link selected"
-              data-cy="FilterLinkAll"
-            >
-              All
-            </a>
+    if (todosFromStorage.length > 0) {
+      dispatch({ type: 'get', payload: todosFromStorage });
+    } else {
+      const initial: Todo[] = [];
 
-            <a
-              href="#/active"
-              className="filter__link"
-              data-cy="FilterLinkActive"
-            >
-              Active
-            </a>
+      localStorage.setItem('todos', JSON.stringify(initial));
+    }
+  }, []);
 
-            <a
-              href="#/completed"
-              className="filter__link"
-              data-cy="FilterLinkCompleted"
-            >
-              Completed
-            </a>
-          </nav>
+  return (
+    <div className="todoapp">
+      <h1 className="todoapp__title">todos</h1>
 
-          {/* 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 className="todoapp__content">
+        <Header />
+        <Main />
+        {todos.length > 0 && <Footer />}
       </div>
     </div>
   );

src/api/todos.ts

@@ -0,0 +1,37 @@
+import { Todo } from '../types/Todo';
+
+export const getTodosFromStorage = () => {
+  const storedItems = localStorage.getItem('todos');
+
+  if (storedItems) {
+    return JSON.parse(storedItems);
+  }
+
+  return [];
+};
+
+export const addTodoToStorage = (todo: Todo) => {
+  const todos = getTodosFromStorage();
+
+  localStorage.setItem('todos', JSON.stringify([...todos, todo]));
+};
+
+export const deleteTodoFromStorage = (id: number) => {
+  const todos = getTodosFromStorage();
+  const newTodos = todos.filter((todo: Todo) => todo.id !== id);
+
+  localStorage.setItem('todos', JSON.stringify(newTodos));
+};
+
+export const patchTodoFromStorage = (id: number, data: Omit<Todo, 'id'>) => {
+  const todos = getTodosFromStorage();
+  const newTodos = todos.map((todo: Todo) => {
+    if (todo.id === id) {
+      return { ...todo, ...data };
+    } else {
+      return todo;
+    }
+  });
+
+  localStorage.setItem('todos', JSON.stringify(newTodos));
+};

src/castomHuks/useDispatch.ts

@@ -0,0 +1,4 @@
+import React from 'react';
+import { DispatchContext } from '../context/GlobalProvider';
+
+export const useDispatch = () => React.useContext(DispatchContext);

src/castomHuks/useGlobalState.ts

@@ -0,0 +1,4 @@
+import React from 'react';
+import { StateContext } from '../context/GlobalProvider';
+
+export const useGlobalState = () => React.useContext(StateContext);

src/components/Footer.tsx

@@ -0,0 +1,66 @@
+import React, { useState } from 'react';
+import { useGlobalState } from '../castomHuks/useGlobalState';
+import { Actions } from '../types/Actions';
+import classNames from 'classnames';
+import { useDispatch } from '../castomHuks/useDispatch';
+import { filteredTodos } from '../utils/filteredTodos';
+import { FooterButton } from './FooterButton';
+import { SelectedState } from '../types/SelectedState';
+
+export const Footer: React.FC = () => {
+  const [selected, setSelected] = useState<SelectedState>({
+    all: true,
+    active: false,
+    completed: false,
+  });
+  const { todos } = useGlobalState();
+  const dispatch = useDispatch();
+
+  const handleSelected = (action: Actions) => {
+    setSelected(prevState => {
+      const newState = { ...prevState };
+
+      for (const key in newState) {
+        if (key !== action) {
+          newState[key as keyof SelectedState] = false;
+        } else {
+          newState[key as keyof SelectedState] = true;
+        }
+      }
+
+      return newState;
+    });
+    dispatch({ type: 'setActions', payload: action });
+  };
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {`${filteredTodos(todos, Actions.ACTIVE).length} items left`}
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Actions).map((action, index) => {
+          const upperAction =
+            action.slice(0, 1).toUpperCase() + action.slice(1);
+
+          return (
+            <a
+              href="#/"
+              className={classNames('filter__link', {
+                selected: selected[action],
+              })}
+              data-cy={`FilterLink${upperAction}`}
+              key={index}
+              onClick={() => handleSelected(action)}
+            >
+              {upperAction}
+            </a>
+          );
+        })}
+      </nav>
+
+      <FooterButton />
+    </footer>
+  );
+};

src/components/FooterButton.tsx

@@ -0,0 +1,42 @@
+import React from 'react';
+import { useGlobalState } from '../castomHuks/useGlobalState';
+import { deleteTodoFromStorage } from '../api/todos';
+import { useDispatch } from '../castomHuks/useDispatch';
+
+export const FooterButton: React.FC = () => {
+  const { todos, inputHeaderRef } = useGlobalState();
+  const dispatch = useDispatch();
+
+  const clearCompleted = async () => {
+    const completedTodos = todos.filter(todo => todo.completed);
+
+    const deletePromises = completedTodos.map(
+      todo =>
+        new Promise<void>(resolve => {
+          deleteTodoFromStorage(todo.id);
+          dispatch({ type: 'deleteTodo', payload: todo.id });
+          resolve();
+        }),
+    );
+
+    if (inputHeaderRef?.current) {
+      inputHeaderRef.current.focus();
+    }
+
+    await Promise.allSettled(deletePromises);
+  };
+
+  const hasCompletedTodos = todos.some(todo => todo.completed);
+
+  return (
+    <button
+      type="button"
+      className="todoapp__clear-completed"
+      data-cy="ClearCompletedButton"
+      disabled={!hasCompletedTodos}
+      onClick={clearCompleted}
+    >
+      Clear completed
+    </button>
+  );
+};