solution

src/App.tsx

@@ -1,26 +1,192 @@
-/* eslint-disable max-len */
+/* eslint-disable jsx-a11y/label-has-associated-control */
 /* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useEffect, useMemo, useState } from 'react';
 import { UserWarning } from './UserWarning';
+import * as clientTodo from './api/todos';
+import { getFilteredTodos } from './utils/getFilteredTodos';
 
-const USER_ID = 0;
+import { ErrorMessage } from './types/ErrorMessage';
+import { Todo } from './types/Todo';
+import { Status } from './types/Status';
+
+import { TodoHeader } from './components/TodoHeader';
+import { TodoFooter } from './components/TodoFooter';
+import { TodoItem } from './components/TodoItem';
+import { ErrorNotification } from './components/ErrorNotification';
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [activeStatus, setActiveStatus] = useState(Status.All);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [isLoadingTodos, setIsLoadingTodos] = useState<number[]>([]);
+  const [errorMessage, setErrorMessage] = useState<ErrorMessage>(
+    ErrorMessage.Default,
+  );
+
+  const filteredTodos = useMemo(
+    () => getFilteredTodos(todos, activeStatus),
+    [todos, activeStatus],
+  );
+  const notCompletedTodos = useMemo(
+    () => todos.filter(todo => !todo.completed),
+    [todos],
+  );
+  const completedTodos = useMemo(
+    () => todos.filter(todo => todo.completed),
+    [todos],
+  );
+  const isToogleAll = completedTodos.length === todos.length;
+
+  const onAddTodo = async (title: string) => {
+    setTempTodo({
+      id: 0,
+      title,
+      userId: clientTodo.USER_ID,
+      completed: false,
+    });
+
+    const newTodo: Omit<Todo, 'id'> = {
+      title,
+      userId: clientTodo.USER_ID,
+      completed: false,
+    };
+
+    try {
+      const todo = await clientTodo.createTodos(newTodo);
+
+      setTodos(currentTodos => [...currentTodos, todo]);
+    } catch (error) {
+      setErrorMessage(ErrorMessage.UnableToAdd);
+      throw error;
+    } finally {
+      setTempTodo(null);
+    }
+  };
+
+  const onUpdateTodo = async (todoToUpdate: Todo) => {
+    setIsLoadingTodos(prevTodos => [...prevTodos, todoToUpdate.id]);
+
+    try {
+      const updatedTodo = await clientTodo.updateTodo(todoToUpdate);
+
+      setTodos(currentTodos => {
+        const newTodos = [...currentTodos];
+        const index = newTodos.findIndex(todo => todo.id === updatedTodo.id);
+
+        newTodos.splice(index, 1, updatedTodo);
+
+        return newTodos;
+      });
+    } catch (error) {
+      setErrorMessage(ErrorMessage.UnableToUpdate);
+
+      throw error;
+    } finally {
+      setIsLoadingTodos(prevTodos =>
+        prevTodos.filter(id => todoToUpdate.id !== id),
+      );
+    }
+  };
+
+  const onDeleteTodo = (todoId: number) => {
+    setIsLoadingTodos(prevTodos => [...prevTodos, todoId]);
+
+    clientTodo
+      .deleteTodo(todoId)
+      .then(() =>
+        setTodos(currentTodos =>
+          currentTodos.filter(todo => todo.id !== todoId),
+        ),
+      )
+      .catch(error => {
+        setErrorMessage(ErrorMessage.UnableToDelete);
+        throw error;
+      })
+      .finally(() =>
+        setIsLoadingTodos(prevTodos => prevTodos.filter(id => todoId !== id)),
+      );
+  };
+
+  const onDeleteAllCompleted = () => {
+    completedTodos.forEach(todo => onDeleteTodo(todo.id));
+  };
+
+  const onToggleAll = () => {
+    if (todos.every(todo => todo.completed)) {
+      todos.forEach(todo => onUpdateTodo({ ...todo, completed: false }));
+    } else {
+      todos.filter(todo => {
+        if (!todo.completed) {
+          onUpdateTodo({ ...todo, completed: true });
+        }
+      });
+    }
+  };
+
+  useEffect(() => {
+    clientTodo
+      .getTodos()
+      .then(data => setTodos(data))
+      .catch(error => {
+        setErrorMessage(ErrorMessage.UnableToLoad);
+        throw error;
+      });
+  }, []);
+
+  if (!clientTodo.USER_ID) {
     return <UserWarning />;
   }
 
   return (
-    <section className="section container">
-      <p className="title is-4">
-        Copy all you need from the prev task:
-        <br />
-        <a href="https://github.com/mate-academy/react_todo-app-add-and-delete#react-todo-app-add-and-delete">
-          React Todo App - Add and Delete
-        </a>
-      </p>
-
-      <p className="subtitle">Styles are already copied</p>
-    </section>
+    <div className="todoapp">
+      <h1 className="todoapp__title">todos</h1>
+
+      <div className="todoapp__content">
+        <TodoHeader
+          error={errorMessage}
+          isToogleAll={todos.length === 0 ? null : isToogleAll}
+          isInputDisablet={!!tempTodo}
+          isDeletedTodos={todos.length}
+          onAddTodo={onAddTodo}
+          onToggleAll={onToggleAll}
+          setErrorMessage={setErrorMessage}
+        />
+
+        <section className="todoapp__main" data-cy="TodoList">
+          {filteredTodos.map(todo => (
+            <TodoItem
+              key={todo.id}
+              todo={todo}
+              onDeleteTodo={onDeleteTodo}
+              onUpdateTodo={onUpdateTodo}
+              isLoading={isLoadingTodos.includes(todo.id)}
+            />
+          ))}
+          {tempTodo && (
+            <TodoItem
+              todo={tempTodo}
+              onDeleteTodo={onDeleteTodo}
+              onUpdateTodo={onUpdateTodo}
+              isLoading={isLoadingTodos.includes(tempTodo.id)}
+            />
+          )}
+        </section>
+
+        {!!todos.length && (
+          <TodoFooter
+            activeStatus={activeStatus}
+            completedTodos={completedTodos.length}
+            notCompletedTodos={notCompletedTodos.length}
+            onDeleteAllCompleted={onDeleteAllCompleted}
+            setActiveStatus={setActiveStatus}
+          />
+        )}
+      </div>
+
+      <ErrorNotification
+        error={errorMessage}
+        setErrorMessage={setErrorMessage}
+      />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,20 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 2135;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const createTodos = ({ title, userId, completed }: Omit<Todo, 'id'>) => {
+  return client.post<Todo>(`/todos`, { title, userId, completed });
+};
+
+export const deleteTodo = (id: number) => {
+  return client.delete(`/todos/${id}`);
+};
+
+export const updateTodo = ({ id, title, completed, userId }: Todo) => {
+  return client.patch<Todo>(`/todos/${id}`, { title, completed, userId });
+};

src/components/ErrorNotification.tsx

@@ -0,0 +1,45 @@
+import React, { useEffect } from 'react';
+import cn from 'classnames';
+import { ErrorMessage } from '../types/ErrorMessage';
+
+type Props = {
+  error: string;
+  setErrorMessage: (error: ErrorMessage) => void;
+};
+
+export const ErrorNotification: React.FC<Props> = props => {
+  const { error, setErrorMessage } = props;
+
+  useEffect(() => {
+    if (error === ErrorMessage.Default) {
+      return;
+    }
+
+    const timer = setTimeout(() => {
+      setErrorMessage(ErrorMessage.Default);
+    }, 3000);
+
+    return () => clearTimeout(timer);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [error]);
+
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={cn(
+        'notification',
+        'is-danger',
+        'is-light has-text-weight-normal',
+        { hidden: !error },
+      )}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+        onClick={() => setErrorMessage}
+      />
+      {error}
+    </div>
+  );
+};

src/components/TodoFooter.tsx

@@ -0,0 +1,56 @@
+/* eslint-disable prettier/prettier */
+import React from 'react';
+import cn from 'classnames';
+import { Status } from '../types/Status';
+
+type Props = {
+  activeStatus: Status;
+  completedTodos: number;
+  notCompletedTodos: number;
+  onDeleteAllCompleted: () => void;
+  setActiveStatus: (status: Status) => void;
+};
+
+export const TodoFooter: React.FC<Props> = props => {
+  const {
+    activeStatus,
+    completedTodos,
+    notCompletedTodos,
+    onDeleteAllCompleted,
+    setActiveStatus,
+  } = props;
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {notCompletedTodos} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Status).map(status => (
+          <a
+            key={status}
+            data-cy={`FilterLink${status}`}
+            href={status === 'All' ? '#/' : `#/${status.toLowerCase()}`}
+            className={cn('filter__link', {
+              selected: activeStatus === status,
+            })}
+            onClick={() => setActiveStatus(status)}
+          >
+            {status}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={completedTodos === 0}
+        onClick={onDeleteAllCompleted}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};