done

src/App.tsx

@@ -1,26 +1,315 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useEffect, useState, useRef, useCallback } from 'react';
+import { Header } from '../src/components/Header';
+import { TodoList } from '../src/components/TodoList';
+import { Footer } from '../src/components/Footer';
+import { getTodos, USER_ID } from './api/todos';
+import { Todo } from './types/Todo';
 import { UserWarning } from './UserWarning';
-
-const USER_ID = 0;
+import { Filter } from './types/Filter';
+import { client } from './utils/fetchClient';
 
 export const App: React.FC = () => {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [newTodo, setNewTodo] = useState('');
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [filter, setFilter] = useState<Filter>(Filter.All);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [loadingIds, setLoadingIds] = useState<number[]>([]);
+  const [editingTodoId, setEditingTodoId] = useState<number | null>(null);
+  const [editedTitle, setEditedTitle] = useState('');
+
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (inputRef.current) {
+      inputRef.current.focus();
+    }
+  }, [todos, error]);
+
+  useEffect(() => {
+    const fetchTodos = async () => {
+      setError(null);
+
+      try {
+        const fetchedTodos = await getTodos();
+
+        setTodos(fetchedTodos);
+      } catch {
+        setError('Unable to load todos');
+      }
+    };
+
+    fetchTodos();
+  }, []);
+
+  useEffect((): void => {
+    if (error) {
+      const timer = setTimeout(() => setError(null), 3000);
+
+      return () => {
+        clearTimeout(timer);
+      };
+    }
+  }, [error]);
+
+  const getFilteredTodos = useCallback(() => {
+    return todos.filter(todo => {
+      switch (filter) {
+        case Filter.Active:
+          return !todo.completed;
+        case Filter.Completed:
+          return todo.completed;
+        default:
+          return true;
+      }
+    });
+  }, [todos, filter]);
+
+  const filteredTodos = getFilteredTodos();
+
+  const startEditing = (todoId: number) => {
+    setEditingTodoId(todoId);
+    setEditedTitle(todos.find(todo => todo.id === todoId)?.title || '');
+  };
+
+  const handleAddTodo = useCallback(
+    async (event: React.FormEvent<HTMLFormElement>) => {
+      event.preventDefault();
+
+      if (!newTodo.trim()) {
+        setError('Title should not be empty');
+        inputRef.current?.focus();
+
+        return;
+      }
+
+      const tempId = Date.now();
+      const tempTodoItem: Todo = {
+        id: tempId,
+        title: newTodo.trim(),
+        completed: false,
+        userId: USER_ID,
+      };
+
+      setTempTodo(tempTodoItem);
+      setIsLoading(true);
+
+      try {
+        const newTodoData = await client.post<Todo>('/todos', {
+          title: tempTodoItem.title,
+          userId: tempTodoItem.userId,
+          completed: tempTodoItem.completed,
+        });
+
+        setTodos(prev => [...prev, newTodoData]);
+        setNewTodo('');
+        if (inputRef.current) {
+          inputRef.current.focus();
+        }
+      } catch {
+        setError('Unable to add a todo');
+      } finally {
+        setTempTodo(null);
+        setIsLoading(false);
+      }
+    },
+    [newTodo],
+  );
+
+  const handleDeleteTodo = async (todoId: number) => {
+    setLoadingIds(prev => [...prev, todoId]);
+
+    try {
+      await client.delete(`/todos/${todoId}`);
+      setTodos(prev => prev.filter(todo => todo.id !== todoId));
+
+      inputRef.current?.focus();
+    } catch {
+      setError('Unable to delete a todo');
+    } finally {
+      setLoadingIds(prev => prev.filter(id => id !== todoId));
+    }
+  };
+
+  const handleClearCompleted = async () => {
+    const completedTodos = todos.filter(todo => todo.completed);
+
+    setLoadingIds(completedTodos.map(todo => todo.id));
+
+    try {
+      const results = await Promise.allSettled(
+        completedTodos.map(todo => client.delete(`/todos/${todo.id}`)),
+      );
+
+      const successfulIds = completedTodos
+        .filter((_, index) => results[index].status === 'fulfilled')
+        .map(todo => todo.id);
+
+      setTodos(prevTodos =>
+        prevTodos.filter(todo => !successfulIds.includes(todo.id)),
+      );
+
+      if (results.some(result => result.status === 'rejected')) {
+        setError('Unable to delete a todo');
+      }
+    } catch {
+      setError('Unable to clear completed todos');
+    } finally {
+      setLoadingIds([]);
+
+      inputRef.current?.focus();
+    }
+  };
+
+  const handleToggleAll = async () => {
+    const shouldCompleteAll = todos.some(todo => !todo.completed);
+    const todosToToggle = todos.filter(
+      todo => todo.completed !== shouldCompleteAll,
+    );
+
+    setLoadingIds(todosToToggle.map(todo => todo.id));
+
+    try {
+      const results = await Promise.allSettled(
+        todosToToggle.map(todo =>
+          client.patch(`/todos/${todo.id}`, { completed: shouldCompleteAll }),
+        ),
+      );
+
+      const successfulIds = todosToToggle
+        .filter((_, index) => results[index].status === 'fulfilled')
+        .map(todo => todo.id);
+
+      setTodos(prev =>
+        prev.map(todo =>
+          successfulIds.includes(todo.id)
+            ? { ...todo, completed: shouldCompleteAll }
+            : todo,
+        ),
+      );
+
+      if (results.some(result => result.status === 'rejected')) {
+        setError('Unable to update a todo');
+      }
+    } catch {
+      setError('Unable to toggle all todos');
+    } finally {
+      setLoadingIds([]);
+    }
+  };
+
+  const handleUpdateTodo = async (todoId: number, newTitle: string) => {
+    if (!newTitle.trim()) {
+      setError('Title should not be empty');
+
+      return;
+    }
+
+    if (newTitle === todos.find(todo => todo.id === todoId)?.title) {
+      setEditingTodoId(null);
+
+      return;
+    }
+
+    setLoadingIds(prev => [...prev, todoId]);
+
+    try {
+      const updatedTodo = await client.patch<Todo>(`/todos/${todoId}`, {
+        title: newTitle,
+      });
+
+      setTodos(prev =>
+        prev.map(todo => (todo.id === todoId ? updatedTodo : todo)),
+      );
+      setEditingTodoId(null);
+    } catch {
+      setError('Unable to update a todo');
+    } finally {
+      setLoadingIds(prev => prev.filter(id => id !== todoId));
+    }
+  };
+
+  const handleCancelRename = () => {
+    setEditingTodoId(null);
+  };
+
+  const handleToggleStatus = async (todoId: number, completed: boolean) => {
+    setLoadingIds(prev => [...prev, todoId]);
+
+    try {
+      const updatedTodo = await client.patch<Todo>(`/todos/${todoId}`, {
+        completed,
+      });
+
+      setTodos(prev =>
+        prev.map(todo => (todo.id === todoId ? updatedTodo : todo)),
+      );
+    } catch {
+      setError('Unable to update a todo');
+    } finally {
+      setLoadingIds(prev => prev.filter(id => id !== todoId));
+    }
+  };
+
+  const completedTodosCount = todos.filter(todo => todo.completed).length;
+  const activeTodosCount = todos.filter(todo => !todo.completed).length;
+
   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
+          newTodo={newTodo}
+          setNewTodo={setNewTodo}
+          handleAddTodo={handleAddTodo}
+          isLoading={isLoading}
+          inputRef={inputRef}
+          handleToggleAll={handleToggleAll}
+          todos={todos}
+        />
+
+        <TodoList
+          todos={filteredTodos}
+          tempTodo={tempTodo}
+          loadingIds={loadingIds}
+          editingId={editingTodoId}
+          handleDeleteTodo={handleDeleteTodo}
+          handleUpdateTodo={handleUpdateTodo}
+          startEditing={startEditing}
+          handleCancelRename={handleCancelRename}
+          handleToggleStatus={handleToggleStatus}
+        />
+
+        {todos.length > 0 && (
+          <Footer
+            filter={filter}
+            setFilter={setFilter}
+            activeTodosCount={activeTodosCount}
+            completedTodosCount={completedTodosCount}
+            handleClearCompleted={handleClearCompleted}
+          />
+        )}
+      </div>
+      <div
+        data-cy="ErrorNotification"
+        className={`notification is-danger is-light has-text-weight-normal ${
+          error ? '' : 'hidden'
+        }`}
+      >
+        <button
+          type="button"
+          className="delete"
+          data-cy="HideErrorButton"
+          onClick={() => setError(null)}
+        />
+        {error || ''}
+      </div>
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,18 @@
+// import { Todo } from '../types/Todo';
+// import { client } from '../utils/fetchClient';
+
+export const USER_ID = 2050;
+
+const BASE_URL = 'https://mate.academy/students-api';
+
+export const getTodos = async () => {
+  const response = await fetch(`${BASE_URL}/todos?userId=${USER_ID}`);
+
+  if (!response.ok) {
+    throw new Error('Unable to fetch todos');
+  }
+
+  return response.json();
+};
+
+// Add more methods here