feat(react): todo-app-with-api

package.json

@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "@cypress/react18": "^2.0.1",
-    "@mate-academy/scripts": "^1.8.5",
+    "@mate-academy/scripts": "^2.1.3",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/node": "^20.14.10",

src/App.tsx

@@ -1,26 +1,241 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useState, useEffect, useRef } from 'react';
+import classNames from 'classnames';
+
+import { Todo } from './types/Todo';
+import { ErrorMessage } from './types/ErrorMessage';
+import { getTodos, addTodo, deleteTodo, updateTodo } from './api/todos';
+import { TodoList } from './components/TodoList';
+import { TodoFilter, FilterValue } from './components/TodoFilter';
+import { ErrorNotification } from './components/ErrorNotification';
 import { UserWarning } from './UserWarning';
 
-const USER_ID = 0;
+const USER_ID = 2425;
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [filter, setFilter] = useState<FilterValue>('all');
+  const [errorMessage, setErrorMessage] = useState<ErrorMessage | null>(null);
+  const [newTitle, setNewTitle] = useState('');
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [loadingTodoIds, setLoadingTodoIds] = useState<number[]>([]);
+  const [isAdding, setIsAdding] = useState(false);
+
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const activeUserId = (() => {
+    try {
+      const user = localStorage.getItem('user');
+
+      return user ? JSON.parse(user).id : USER_ID;
+    } catch {
+      return USER_ID;
+    }
+  })();
+
+  useEffect(() => {
+    if (!activeUserId) {
+      return;
+    }
+
+    getTodos(activeUserId)
+      .then(setTodos)
+      .catch(() => {
+        setErrorMessage(ErrorMessage.Load);
+      });
+  }, [activeUserId]);
+
+  useEffect(() => {
+    if (inputRef.current) {
+      inputRef.current.focus();
+    }
+  }, [todos, tempTodo]);
+
+  if (!activeUserId) {
     return <UserWarning />;
   }
 
+  const handleAddTodo = (e: React.FormEvent) => {
+    e.preventDefault();
+    const trimmedTitle = newTitle.trim();
+
+    if (!trimmedTitle) {
+      setErrorMessage(ErrorMessage.EmptyTitle);
+
+      return;
+    }
+
+    const optimisticTodo: Todo = {
+      id: 0,
+      userId: activeUserId,
+      title: trimmedTitle,
+      completed: false,
+    };
+
+    setTempTodo(optimisticTodo);
+    setIsAdding(true);
+    setErrorMessage(null);
+
+    addTodo({ userId: activeUserId, title: trimmedTitle, completed: false })
+      .then(newTodo => {
+        setTodos(prev => [...prev, newTodo]);
+        setNewTitle('');
+      })
+      .catch(() => {
+        setErrorMessage(ErrorMessage.Add);
+      })
+      .finally(() => {
+        setTempTodo(null);
+        setIsAdding(false);
+        inputRef.current?.focus();
+      });
+  };
+
+  const handleDeleteTodo = (todoId: number): Promise<void> => {
+    setLoadingTodoIds(prev => [...prev, todoId]);
+    setErrorMessage(null);
+
+    return deleteTodo(todoId)
+      .then(() => {
+        setTodos(prev => prev.filter(todo => todo.id !== todoId));
+      })
+      .catch(err => {
+        setErrorMessage(ErrorMessage.Delete);
+        throw err;
+      })
+      .finally(() => {
+        setLoadingTodoIds(prev => prev.filter(id => id !== todoId));
+        inputRef.current?.focus();
+      });
+  };
+
+  const handleUpdateTodo = (
+    todoId: number,
+    data: Partial<Todo>,
+  ): Promise<void> => {
+    setLoadingTodoIds(prev => [...prev, todoId]);
+    setErrorMessage(null);
+
+    return updateTodo(todoId, data)
+      .then(updatedTodo => {
+        setTodos(prev =>
+          prev.map(todo => (todo.id === todoId ? updatedTodo : todo)),
+        );
+      })
+      .catch(err => {
+        setErrorMessage(ErrorMessage.Update);
+        throw err;
+      })
+      .finally(() => {
+        setLoadingTodoIds(prev => prev.filter(id => id !== todoId));
+        inputRef.current?.focus();
+      });
+  };
+
+  const handleToggleAll = () => {
+    const allCompleted = todos.every(t => t.completed);
+    const targetCompleted = !allCompleted;
+    const todosToUpdate = todos.filter(t => t.completed !== targetCompleted);
+
+    todosToUpdate.forEach(todo => {
+      handleUpdateTodo(todo.id, { completed: targetCompleted }).catch(() => {});
+    });
+  };
+
+  const handleClearCompleted = () => {
+    const completedTodos = todos.filter(t => t.completed);
+
+    completedTodos.forEach(todo => {
+      handleDeleteTodo(todo.id).catch(() => {});
+    });
+  };
+
+  const visibleTodos = todos.filter(todo => {
+    if (filter === 'active') {
+      return !todo.completed;
+    }
+
+    if (filter === 'completed') {
+      return todo.completed;
+    }
+
+    return true;
+  });
+
+  const allCompleted = todos.length > 0 && todos.every(t => t.completed);
+  const activeTodosCount = todos.filter(t => !t.completed).length;
+  const completedTodosCount = todos.filter(t => t.completed).length;
+  const activeCountText = `${activeTodosCount} ${
+    activeTodosCount === 1 ? 'item' : 'items'
+  } left`;
+
   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 className="todoapp__header">
+          {todos.length > 0 && (
+            <button
+              data-cy="ToggleAllButton"
+              type="button"
+              className={classNames('todoapp__toggle-all', {
+                active: allCompleted,
+              })}
+              onClick={handleToggleAll}
+            />
+          )}
+
+          <form onSubmit={handleAddTodo}>
+            <input
+              data-cy="NewTodoField"
+              type="text"
+              ref={inputRef}
+              className="todoapp__new-todo"
+              placeholder="What needs to be done?"
+              value={newTitle}
+              onChange={e => setNewTitle(e.target.value)}
+              disabled={isAdding}
+            />
+          </form>
+        </header>
+
+        {(todos.length > 0 || tempTodo) && (
+          <>
+            <TodoList
+              todos={visibleTodos}
+              tempTodo={tempTodo}
+              loadingTodoIds={loadingTodoIds}
+              onDelete={handleDeleteTodo}
+              onUpdate={handleUpdateTodo}
+            />
+
+            {todos.length > 0 && (
+              <footer className="todoapp__footer" data-cy="Footer">
+                <span className="todo-count" data-cy="TodosCounter">
+                  {activeCountText}
+                </span>
+
+                <TodoFilter filter={filter} onChange={setFilter} />
+
+                <button
+                  data-cy="ClearCompletedButton"
+                  type="button"
+                  className="todoapp__clear-completed"
+                  disabled={completedTodosCount === 0}
+                  onClick={handleClearCompleted}
+                >
+                  Clear completed
+                </button>
+              </footer>
+            )}
+          </>
+        )}
+      </div>
+
+      <ErrorNotification
+        message={errorMessage}
+        onClose={() => setErrorMessage(null)}
+      />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,18 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const getTodos = (userId: number) => {
+  return client.get<Todo[]>(`/todos?userId=${userId}`);
+};
+
+export const addTodo = ({ userId, title, completed }: Omit<Todo, 'id'>) => {
+  return client.post<Todo>('/todos', { userId, title, completed });
+};
+
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const updateTodo = (todoId: number, data: Partial<Todo>) => {
+  return client.patch<Todo>(`/todos/${todoId}`, data);
+};

src/components/ErrorNotification.tsx

@@ -0,0 +1,46 @@
+import React, { useEffect } from 'react';
+import classNames from 'classnames';
+
+import { ErrorMessage } from '../types/ErrorMessage';
+
+interface Props {
+  message: ErrorMessage | null;
+  onClose: () => void;
+}
+
+export const ErrorNotification: React.FC<Props> = ({ message, onClose }) => {
+  useEffect(() => {
+    if (!message) {
+      return;
+    }
+
+    const timer = setTimeout(() => {
+      onClose();
+    }, 3000);
+
+    return () => {
+      clearTimeout(timer);
+    };
+  }, [message, onClose]);
+
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={classNames(
+        'notification',
+        'is-danger',
+        'is-light',
+        'has-text-weight-normal',
+        { hidden: !message },
+      )}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+        onClick={onClose}
+      />
+      {message}
+    </div>
+  );
+};