task solution

README.md

@@ -47,4 +47,4 @@ Implement the ability to edit a todo title on double click:
 
 - Implement a solution following the [React task guideline](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).
-- Replace `<your_account>` with your Github username in the [DEMO LINK](https://<your_account>.github.io/react_todo-app-with-api/) and add it to the PR description.
+- Replace `<your_account>` with your Github username in the [DEMO LINK](https://VitaliyHoroshko.github.io/react_todo-app-with-api/) and add it to the PR description.

src/App.tsx

@@ -1,26 +1,272 @@
-/* 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, useState } from 'react';
 import { UserWarning } from './UserWarning';
+import { getTodos, USER_ID } from './api/todos';
+import { Todo } from './types/Todo';
+import { client } from './utils/fetchClient';
 
-const USER_ID = 0;
+import Header from './components/Header';
+import TodoList from './components/TodoList';
+import Footer from './components/Footer';
+import ErrorNotification from './components/ErrorNotification';
+import { ErrorMessage } from './types/ErrorMessage';
+import { Filter } from './types/Filter';
 
 export const App: React.FC = () => {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [error, setError] = useState('');
+  const [filter, setFilter] = useState<Filter>(Filter.ALL);
+  const [loading, setLoading] = useState(false);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [updatingIds, setUpdatingIds] = useState<number[]>([]);
+  const [newTitle, setNewTitle] = useState('');
+  const [editingId, setEditingId] = useState<number | null>(null);
+
+  const newTodoRef = React.useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (!USER_ID) {
+      return;
+    }
+
+    setError('');
+    setLoading(true);
+    getTodos()
+      .then(todosFromServer => {
+        setTimeout(() => setTodos(todosFromServer), 150);
+      })
+      .catch(() => setError(ErrorMessage.LOAD_TODOS))
+      .finally(() => setLoading(false));
+  }, []);
+
+  useEffect(() => {
+    if (!loading) {
+      newTodoRef.current?.focus();
+    }
+  }, [loading]);
+
+  useEffect(() => {
+    if (error) {
+      const timer = setTimeout(() => setError(''), 3000);
+
+      return () => clearTimeout(timer);
+    }
+  }, [error]);
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    const trimmed = newTitle.trim();
+
+    if (!trimmed) {
+      setError(ErrorMessage.EMPTY_TITLE);
+
+      return;
+    }
+
+    const optimisticTodo: Todo = {
+      id: 0,
+      title: trimmed,
+      completed: false,
+      userId: USER_ID,
+    };
+
+    setTempTodo(optimisticTodo);
+    setLoading(true);
+
+    try {
+      const addedTodo = await client.post<Todo>('/todos', {
+        title: trimmed,
+        userId: USER_ID,
+        completed: false,
+      });
+
+      setTodos(prev => [...prev, addedTodo]);
+      setTempTodo(null);
+      setNewTitle('');
+      newTodoRef.current?.focus();
+    } catch {
+      setError(ErrorMessage.ADD_TODO);
+      setTempTodo(null);
+      newTodoRef.current?.focus();
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const deleteTodo = async (id: number) => {
+    setUpdatingIds(prev => [...prev, id]);
+    try {
+      await client.delete(`/todos/${id}`);
+      setTodos(prev => prev.filter(t => t.id !== id));
+
+      newTodoRef.current?.focus();
+    } catch {
+      setError(ErrorMessage.DELETE_TODO);
+    } finally {
+      setUpdatingIds(prev => prev.filter(i => i !== id));
+    }
+  };
+
+  const toggleTodo = async (id: number) => {
+    const activeTodo = todos.find(todo => todo.id === id);
+
+    if (!activeTodo) {
+      return;
+    }
+
+    const newStatus = !activeTodo.completed;
+
+    setUpdatingIds(prev => [...prev, id]);
+
+    try {
+      const updatedTodo = await client.patch<Todo>(`/todos/${id}`, {
+        completed: newStatus,
+      });
+
+      setTodos(prevTodos =>
+        prevTodos.map(todo => {
+          return todo.id === id ? updatedTodo : todo;
+        }),
+      );
+    } catch {
+      setError(ErrorMessage.UPDATE_TODO);
+    } finally {
+      setUpdatingIds(prev => prev.filter(i => i !== id));
+    }
+  };
+
+  const updateTodo = async (id: number, title: string) => {
+    setUpdatingIds(prev => [...prev, id]);
+
+    try {
+      const updatedTodo = await client.patch<Todo>(`/todos/${id}`, { title });
+
+      setTodos(prev => prev.map(todo => (todo.id === id ? updatedTodo : todo)));
+      setEditingId(null);
+    } catch {
+      setError(ErrorMessage.UPDATE_TODO);
+    } finally {
+      setUpdatingIds(prev => prev.filter(i => i !== id));
+    }
+  };
+
+  const toggleAll = async () => {
+    const newCompleted = !todos.every(todo => todo.completed);
+    const filtered = todos.filter(todo => todo.completed !== newCompleted);
+    const idsToUpdate = filtered.map(todo => todo.id);
+
+    setUpdatingIds(prev => [...prev, ...idsToUpdate]);
+
+    try {
+      const promises = filtered.map(todo => {
+        return client.patch<Todo>(`/todos/${todo.id}`, {
+          completed: newCompleted,
+        });
+      });
+
+      const updatedTodos = await Promise.all<Todo>(promises);
+
+      setTodos(prevTodos =>
+        prevTodos.map(todo => {
+          const updated = updatedTodos.find(
+            (u: { id: number }) => u.id === todo.id,
+          );
+
+          return updated || todo;
+        }),
+      );
+    } catch {
+      setError(ErrorMessage.TOGGLE_ALL);
+    } finally {
+      setUpdatingIds(prev => prev.filter(id => !idsToUpdate.includes(id)));
+    }
+  };
+
+  const clearCompleted = async () => {
+    const completedTodos = todos.filter(t => t.completed);
+
+    if (completedTodos.length === 0) {
+      return;
+    }
+
+    const ids = completedTodos.map(t => t.id);
+
+    setUpdatingIds(ids);
+
+    const successIds: number[] = [];
+    let hasError = false;
+
+    await Promise.allSettled(
+      ids.map(async id => {
+        try {
+          await client.delete(`/todos/${id}`);
+          successIds.push(id);
+        } catch {
+          hasError = true;
+        }
+      }),
+    );
+
+    setTodos(prev => prev.filter(t => !successIds.includes(t.id)));
+    setUpdatingIds([]);
+
+    if (!hasError) {
+      newTodoRef.current?.focus();
+    } else {
+      setError(ErrorMessage.DELETE_TODO);
+    }
+  };
+
+  const allCompleted = todos.length > 0 && todos.every(todo => todo.completed);
+
   if (!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">
+        <Header
+          newTitle={newTitle}
+          setNewTitle={setNewTitle}
+          onSubmit={handleSubmit}
+          isLoading={loading}
+          inputRef={newTodoRef}
+          todosLength={todos.length}
+          allCompleted={allCompleted}
+          onToggleAll={toggleAll}
+        />
+
+        {(loading || todos.length > 0) && (
+          <>
+            <TodoList
+              todos={todos}
+              filter={filter}
+              tempTodo={tempTodo}
+              updatingIds={updatingIds}
+              onToggle={toggleTodo}
+              onDelete={deleteTodo}
+              isLoading={loading}
+              editingId={editingId}
+              onEdit={setEditingId}
+              onUpdate={updateTodo}
+            />
+
+            <Footer
+              activeCount={todos.filter(t => !t.completed).length}
+              filter={filter}
+              setFilter={setFilter}
+              hasCompleted={todos.some(t => t.completed)}
+              onClearCompleted={clearCompleted}
+            />
+          </>
+        )}
+      </div>
+
+      <ErrorNotification error={error} onClose={() => setError('')} />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,8 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 3995;
+
+export const getTodos = async (): Promise<Todo[]> => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};

src/components/ErrorNotification.tsx

@@ -0,0 +1,32 @@
+import React from 'react';
+import classNames from 'classnames';
+
+type ErrorNotificationProps = {
+  error: string;
+  onClose: () => void;
+};
+
+export const ErrorNotification: React.FC<ErrorNotificationProps> = ({
+  error,
+  onClose,
+}) => {
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={classNames(
+        'notification is-danger is-light has-text-weight-normal',
+        { hidden: !error },
+      )}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+        onClick={onClose}
+      />
+      {error}
+    </div>
+  );
+};
+
+export default ErrorNotification;

src/components/Footer.tsx

@@ -0,0 +1,61 @@
+import React from 'react';
+import classNames from 'classnames';
+import { Filter } from '../types/Filter';
+
+type FooterProps = {
+  activeCount: number;
+  filter: Filter;
+  setFilter: (filter: Filter) => void;
+  hasCompleted: boolean;
+  onClearCompleted: () => void;
+};
+
+const filters = [
+  { value: Filter.ALL, label: 'All', href: '#/' },
+  { value: Filter.ACTIVE, label: 'Active', href: '#/active' },
+  { value: Filter.COMPLETED, label: 'Completed', href: '#/completed' },
+];
+
+export const Footer: React.FC<FooterProps> = ({
+  activeCount,
+  filter,
+  setFilter,
+  hasCompleted,
+  onClearCompleted,
+}) => {
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {activeCount} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {filters.map(item => (
+          <a
+            key={item.value}
+            href={item.href}
+            className={classNames('filter__link', {
+              selected: filter === item.value,
+            })}
+            data-cy={`FilterLink${item.label}`}
+            onClick={() => setFilter(item.value)}
+          >
+            {item.label}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={!hasCompleted}
+        onClick={onClearCompleted}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};
+
+export default Footer;