add solution

src/App.tsx

@@ -1,157 +1,56 @@
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useEffect, useRef } from 'react';
+import { Filter } from './types/Filter';
+import { TodoList } from './components/TodoList';
+import { Header } from './components/Header';
+import { Footer } from './components/Footer';
+import { ErrorNotification } from './components/ErrorNotification';
+import { TodoItem } from './components/TodoItem';
+import { useTodoContext } from './components/context/TodoContext';
 
 export const App: React.FC = () => {
+  const { state } = useTodoContext();
+  const { todos, filter, tempTodo } = state;
+  const textField = useRef<HTMLInputElement>(null);
+
+  const completedTodos = todos.filter(todo => todo.completed);
+  const activeTodos = todos.filter(todo => !todo.completed);
+
+  const filteredTodos = () => {
+    switch (filter) {
+      case Filter.Completed:
+        return completedTodos;
+      case Filter.Active:
+        return activeTodos;
+      default:
+        return todos;
+    }
+  };
+
+  useEffect(() => {
+    if (textField.current) {
+      textField.current.focus();
+    }
+  }, [todos.length]);
+
   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>
+        <Header completedTodos={completedTodos} textField={textField} />
 
         <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>
+          <TodoList todos={filteredTodos()} />
 
-            {/* 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>
+          {tempTodo && <TodoItem todo={tempTodo} isLoading={true} />}
         </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>
+        {todos.length > 0 && (
+          <Footer activeTodos={activeTodos} completedTodos={completedTodos} />
+        )}
       </div>
+
+      <ErrorNotification />
     </div>
   );
 };

src/UserWarning.tsx

@@ -0,0 +1,15 @@
+import React from 'react';
+
+export const UserWarning: React.FC = () => (
+  <section className="section">
+    <p className="box is-size-3">
+      Please get your <b> userId </b>{' '}
+      <a href="https://mate-academy.github.io/react_student-registration">
+        here
+      </a>{' '}
+      and save it in the app <pre>const USER_ID = ...</pre>
+      All requests to the API must be sent with this
+      <b> userId.</b>
+    </p>
+  </section>
+);

src/api/todos.ts

@@ -0,0 +1,24 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 1011;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const addTodo = ({ title, completed, userId }: Omit<Todo, 'id'>) => {
+  return client.post<Todo>('/todos', {
+    title,
+    completed,
+    userId,
+  });
+};
+
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const updateTodo = (todo: Todo) => {
+  return client.patch<Todo>(`/todos/${todo.id}`, todo);
+};

src/components/ErrorNotification/ErrorNotification.tsx

@@ -0,0 +1,42 @@
+import React, { useEffect } from 'react';
+import classNames from 'classnames';
+import { useTodoContext } from '../context/TodoContext';
+
+export const ErrorNotification: React.FC = () => {
+  const { state, dispatch } = useTodoContext();
+  const { errorText } = state;
+
+  useEffect(() => {
+    if (errorText) {
+      const timer = setTimeout(() => {
+        dispatch({ type: 'SET_ERROR', payload: null });
+      }, 3000);
+
+      return () => clearTimeout(timer);
+    }
+
+    return () => {};
+  }, [errorText, dispatch]);
+
+  if (!errorText) {
+    return null;
+  }
+
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={classNames(
+        'notification is-danger is-light has-text-weight-normal',
+        { hidden: errorText },
+      )}
+    >
+      <button
+        onClick={() => dispatch({ type: 'SET_ERROR', payload: null })}
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+      />
+      {errorText}
+    </div>
+  );
+};

src/components/ErrorNotification/index.js

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

src/components/Footer/Footer.tsx

@@ -0,0 +1,75 @@
+import React from 'react';
+import classNames from 'classnames';
+import { Filter } from '../../types/Filter';
+import { Error } from '../../types/Error';
+import { useTodoContext } from '../context/TodoContext';
+import { Todo } from '../../types/Todo';
+
+type Props = {
+  activeTodos: Todo[];
+  completedTodos: Todo[];
+};
+
+export const Footer: React.FC<Props> = ({ activeTodos, completedTodos }) => {
+  const { state, dispatch } = useTodoContext();
+  const { filter } = state;
+
+  const handleClearCompleted = async () => {
+    const completedIds = completedTodos.map(todo => todo.id);
+
+    dispatch({ type: 'SET_DELETING_IDS', payload: completedIds });
+
+    try {
+      dispatch({ type: 'CLEAR_COMPLETED' });
+    } catch {
+      dispatch({
+        type: 'SET_ERROR',
+        payload: Error.unableToDelete,
+      });
+      setTimeout(() => {
+        dispatch({ type: 'SET_ERROR', payload: null });
+      }, 3000);
+    } finally {
+      dispatch({ type: 'SET_DELETING_IDS', payload: [] });
+    }
+  };
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {activeTodos.length} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Filter).map(filterOption => (
+          <a
+            key={filterOption}
+            href={`#/${filterOption.toLowerCase()}`}
+            onClick={() =>
+              dispatch({
+                type: 'SET_FILTER',
+                payload: filterOption,
+              })
+            }
+            className={classNames('filter__link', {
+              selected: filter === filterOption,
+            })}
+            data-cy={`FilterLink${filterOption}`}
+          >
+            {filterOption}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        onClick={handleClearCompleted}
+        disabled={completedTodos.length === 0}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/Footer/index.js

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