solution

package.json

@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "@cypress/react18": "^2.0.1",
-    "@mate-academy/scripts": "^1.8.5",
+    "@mate-academy/scripts": "^1.9.12",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/node": "^20.14.10",

src/App.tsx

@@ -1,26 +1,314 @@
-/* eslint-disable max-len */
+/* eslint-disable react-hooks/rules-of-hooks */
+/* eslint-disable jsx-a11y/label-has-associated-control */
 /* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, {
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
 import { UserWarning } from './UserWarning';
+import {
+  getTodos,
+  USER_ID,
+  deleteTodo,
+  addTodo,
+  updateTodo,
+} from './api/todos';
+import { Todo } from './types/Todo';
+import { Error } from './types/enumError';
+import { FilterName } from './types/enumFilterName';
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { Footer } from './components/Footer';
+import { ErrorMes } from './components/ErrorMes';
 
-const USER_ID = 0;
+export const App = () => {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [errorMessage, setErrorMessage] = useState<Error>(Error.Default);
+  const [filteredBy, setFilteredBy] = useState<FilterName>(FilterName.ALL);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [newTodoTitle, setNewTodoTitle] = useState('');
+  const [loadingTodoId, setLoadingTodoId] = useState<number | null>(null);
+  const [isInputDisabled, setIsInputDisabled] = useState(false);
+  const [editingTodoId, setEditingTodoId] = useState<number | null>(null);
+  const [editingTitle, setEditingTitle] = useState<string>('');
+
+  const activeCount = todos.filter(todo => !todo.completed).length;
+  const completedTodos = todos.filter(todo => todo.completed);
+
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  function loadTodos() {
+    getTodos()
+      .then(setTodos)
+      .catch(() => {
+        setErrorMessage(Error.Load);
+        setTimeout(() => setErrorMessage(Error.Default), 3000);
+      });
+  }
+
+  useEffect(() => {
+    loadTodos();
+  }, []);
+
+  useEffect(() => {
+    if (!isInputDisabled && inputRef.current) {
+      inputRef.current.focus();
+    }
+  }, [isInputDisabled]);
+
+  const filteredTodos = useMemo(() => {
+    switch (filteredBy) {
+      case FilterName.ACTIVE:
+        return todos.filter(todo => !todo.completed);
+      case FilterName.COMPLETED:
+        return todos.filter(todo => todo.completed);
+      default:
+        return todos;
+    }
+  }, [todos, filteredBy]);
+
+  function addPost(loadingTodo: Todo) {
+    setTempTodo(loadingTodo);
+    setErrorMessage(Error.Default);
+    setIsInputDisabled(true);
+
+    addTodo({
+      userId: loadingTodo.userId,
+      title: loadingTodo.title,
+      completed: loadingTodo.completed,
+    })
+      .then(createdTodo => {
+        setTodos(currentTodos => [...currentTodos, createdTodo]);
+        setNewTodoTitle('');
+      })
+      .catch(() => {
+        setErrorMessage(Error.Add);
+        setTimeout(() => setErrorMessage(Error.Default), 3000);
+      })
+      .finally(() => {
+        setTempTodo(null);
+        setIsInputDisabled(false);
+        inputRef.current?.focus();
+      });
+  }
+
+  function handleSubmit(event: React.FormEvent) {
+    event.preventDefault();
+
+    const trimmedTitle = newTodoTitle.trim();
+
+    if (!trimmedTitle) {
+      setErrorMessage(Error.Empty);
+      setTimeout(() => setErrorMessage(Error.Default), 3000);
+
+      return;
+    }
+
+    const loadingTodo: Todo = {
+      userId: USER_ID,
+      title: trimmedTitle,
+      completed: false,
+      id: 0,
+    };
+
+    setTempTodo(loadingTodo);
+    addPost(loadingTodo);
+  }
+
+  const deletePost = useCallback((todoId: number) => {
+    setLoadingTodoId(todoId);
+    deleteTodo(todoId)
+      .then(() => {
+        setTodos(currentTodos =>
+          currentTodos.filter(todo => todo.id !== todoId),
+        );
+      })
+      .catch(() => {
+        setErrorMessage(Error.Delete);
+        setTimeout(() => setErrorMessage(Error.Default), 3000);
+      })
+      .finally(() => {
+        setLoadingTodoId(null);
+        inputRef.current?.focus();
+      });
+  }, []);
+
+  const deleteCompleted = useCallback(() => {
+    const completedIds = todos
+      .filter(todo => todo.completed)
+      .map(todo => todo.id);
+
+    completedIds.forEach(id => deletePost(id));
+  }, [todos, deletePost]);
+
+  function togglCompleted(todoId: number) {
+    const currentTodo = todos.find(todo => todo.id === todoId);
+
+    if (!currentTodo) {
+      return;
+    }
+
+    const newCompletionState = !currentTodo.completed;
+
+    setLoadingTodoId(todoId);
+
+    updateTodo(todoId, newCompletionState, currentTodo.title)
+      .then(() => {
+        setTodos(prevTodos =>
+          prevTodos.map(todo =>
+            todo.id === todoId
+              ? { ...todo, completed: newCompletionState }
+              : todo,
+          ),
+        );
+      })
+      .catch(() => {
+        setErrorMessage(Error.Update);
+        setTimeout(() => setErrorMessage(Error.Default), 3000);
+      })
+      .finally(() => {
+        setLoadingTodoId(null);
+      });
+  }
+
+  async function completeAll() {
+    const allCompleted = todos.every(todo => todo.completed);
+    const newCompletionState = !allCompleted;
+
+    const todosToUpdate = todos.filter(
+      todo => todo.completed !== newCompletionState,
+    );
+
+    const failedIds: number[] = [];
+
+    for (const todo of todosToUpdate) {
+      try {
+        await updateTodo(todo.id, newCompletionState, todo.title);
+      } catch {
+        failedIds.push(todo.id);
+      }
+    }
+
+    setTodos(currentTodos =>
+      currentTodos.map(todo =>
+        failedIds.includes(todo.id)
+          ? todo
+          : { ...todo, completed: newCompletionState },
+      ),
+    );
+
+    if (failedIds.length > 0) {
+      setErrorMessage(Error.Update);
+    }
+  }
+
+  const updateTitle = useCallback(
+    (todoId: number) => {
+      const trimmedTitle = editingTitle.trim();
+      const currentTodo = todos.find(todo => todo.id === todoId);
+
+      if (currentTodo && trimmedTitle === currentTodo.title) {
+        setEditingTodoId(null);
+
+        return;
+      }
+
+      if (trimmedTitle === '') {
+        deletePost(todoId);
+      } else {
+        setLoadingTodoId(todoId);
+
+        updateTodo(todoId, currentTodo?.completed || false, trimmedTitle)
+          .then(() => {
+            setTodos(prevTodos =>
+              prevTodos.map(todo =>
+                todo.id === todoId ? { ...todo, title: trimmedTitle } : todo,
+              ),
+            );
+            setEditingTodoId(null);
+          })
+          .catch(() => {
+            setErrorMessage(Error.Update);
+            setTimeout(() => setErrorMessage(Error.Default), 3000);
+          })
+          .finally(() => {
+            setLoadingTodoId(null);
+          });
+      }
+    },
+    [todos, editingTitle, deletePost],
+  );
+
+  useEffect(() => {
+    if (errorMessage) {
+      const timer = setTimeout(() => setErrorMessage(Error.Default), 3000);
+
+      return () => clearTimeout(timer);
+    }
+
+    return;
+  }, [errorMessage]);
 
-export const App: React.FC = () => {
   if (!USER_ID) {
     return <UserWarning />;
   }
 
+  const handleCancelEdit = useCallback(() => {
+    setEditingTodoId(null);
+    setEditingTitle('');
+  }, []);
+
+  const handleEditTodo = useCallback((todoId: number, title: string) => {
+    setEditingTodoId(todoId);
+    setEditingTitle(title);
+  }, []);
+
   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
+          todos={todos}
+          completeAll={completeAll}
+          activeCount={activeCount}
+          handleSubmit={handleSubmit}
+          inputRef={inputRef}
+          newTodoTitle={newTodoTitle}
+          setNewTodoTitle={setNewTodoTitle}
+          isInputDisabled={isInputDisabled}
+        />
+        {!!todos.length && (
+          <TodoList
+            filteredTodos={filteredTodos}
+            togglCompleted={togglCompleted}
+            editingTodoId={editingTodoId}
+            editingTitle={editingTitle}
+            setEditingTitle={setEditingTitle}
+            updateTitle={updateTitle}
+            handleCancelEdit={handleCancelEdit}
+            handleEditTodo={handleEditTodo}
+            loadingTodoId={loadingTodoId}
+            deletePost={deletePost}
+            tempTodo={tempTodo}
+          />
+        )}
+
+        {!!todos.length && (
+          <Footer
+            activeCount={activeCount}
+            filteredBy={filteredBy}
+            setFilteredBy={setFilteredBy}
+            deleteCompleted={deleteCompleted}
+            completedTodos={completedTodos}
+          />
+        )}
+      </div>
+
+      <ErrorMes errorMessage={errorMessage} />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,34 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 2129;
+
+export const getTodos = () => {
+  const baseUrl = `/todos?userId=${USER_ID}`;
+
+  return client.get<Todo[]>(baseUrl);
+};
+
+export const deleteTodo = (id: number) => {
+  const baseUrl = `/todos/${id}`;
+
+  return client.delete(baseUrl);
+};
+
+export const addTodo = (newTodo: Omit<Todo, 'id'>) => {
+  const baseUrl = `/todos`;
+
+  return client.post<Todo>(baseUrl, newTodo);
+};
+
+export const updateTodo = (id: number, completed: boolean, title?: string) => {
+  const baseUrl = `/todos/${id}`;
+
+  const updateData: { completed: boolean; title?: string } = { completed };
+
+  if (title) {
+    updateData.title = title;
+  }
+
+  return client.patch(baseUrl, updateData);
+};

src/components/ErrorMes.tsx

@@ -0,0 +1,19 @@
+type Props = {
+  errorMessage: string;
+};
+
+export const ErrorMes: React.FC<Props> = ({ errorMessage }) => {
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={
+        errorMessage
+          ? 'notification is-danger is-light has-text-weight-normal'
+          : 'hidden'
+      }
+    >
+      <button data-cy="HideErrorButton" type="button" className="delete" />
+      {errorMessage}
+    </div>
+  );
+};