Solution

src/App.tsx

@@ -1,26 +1,327 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
-import { UserWarning } from './UserWarning';
-
-const USER_ID = 0;
+import React, { useCallback, useEffect, useState } from 'react';
+import { Todo } from './types/Todo';
+import { FilterStatus } from './types/FilterStatus';
+import { Header } from './components/Header/Header';
+import { TodoList } from './components/TodoList/TodoList';
+import { Footer } from './components/Footer/Footer';
+import {
+  createTodo,
+  deleteTodo,
+  updateTodo,
+  getTodos,
+  USER_ID,
+} from './api/todos';
+import classNames from 'classnames';
+import { ErrorNotification } from './types/ErrorNotification';
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
-    return <UserWarning />;
-  }
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [filteredTodos, setFilteredTodos] = useState<Todo[]>([]);
+  const [filter, setFilter] = useState<FilterStatus>(FilterStatus.All);
+  const [errorMessage, setErrorMessage] = useState('');
+  const [loading, setLoading] = useState(false);
+  const [title, setTitle] = useState('');
+  const [processingTodoIds, setProcessingTodoIds] = useState<number[]>([]);
+
+  useEffect(() => {
+    getTodos()
+      .then(setTodos)
+      .catch(() => {
+        setErrorMessage(ErrorNotification.loadingError);
+        setTimeout(() => setErrorMessage(''), 3000);
+      });
+  }, []);
+
+  const filterTodosByStatus = useCallback(() => {
+    let filtered;
+
+    switch (filter) {
+      case FilterStatus.Active:
+        filtered = todos.filter(todo => !todo.completed);
+        break;
+      case FilterStatus.Completed:
+        filtered = todos.filter(todo => todo.completed);
+        break;
+      default:
+        filtered = todos;
+    }
+
+    setFilteredTodos(filtered);
+  }, [todos, filter]);
+
+  useEffect(() => {
+    filterTodosByStatus();
+  }, [todos, filter, filterTodosByStatus]);
+
+  const createTempTodo = (tempTitle: string): Todo => {
+    return {
+      title: tempTitle,
+      userId: USER_ID,
+      completed: false,
+      id: 0,
+    };
+  };
+
+  const handleAddTodo = (newTitle: string) => {
+    const trimmedTitle = newTitle.trim();
+
+    setTempTodo(createTempTodo(newTitle));
+    setLoading(true);
+
+    if (trimmedTitle) {
+      createTodo(trimmedTitle)
+        .then(newTodoResponse => {
+          setTodos(prevTodos => [...prevTodos, newTodoResponse]);
+          setTempTodo(null);
+          setTitle('');
+        })
+        .catch(() => {
+          setErrorMessage(ErrorNotification.addError);
+          setTimeout(() => setErrorMessage(''), 3000);
+        })
+        .finally(() => {
+          setTempTodo(null);
+          setLoading(false);
+        });
+    } else {
+      setTempTodo(null);
+      setLoading(false);
+      setErrorMessage(ErrorNotification.titleError);
+      setTimeout(() => setErrorMessage(''), 3000);
+    }
+  };
+
+  const deleteSelectTodo = (todoId: number): Promise<void> => {
+    setProcessingTodoIds(prevTodosIds => {
+      return [...prevTodosIds, todoId];
+    });
+
+    return deleteTodo(todoId)
+      .then(() => {
+        setTodos((currentTodos: Todo[]) =>
+          currentTodos.filter((todo: Todo) => todo.id !== todoId),
+        );
+      })
+      .catch(() => {
+        setTodos(todos);
+        setErrorMessage(ErrorNotification.deleteError);
+        setTimeout(() => setErrorMessage(''), 3000);
+      })
+      .finally(() => {
+        setProcessingTodoIds([]);
+      });
+  };
+
+  const handleClearComplete = () => {
+    const completedTodos = todos.filter((todo: Todo) => todo.completed);
+
+    const deletePromises = completedTodos.map((completedTodo: Todo) => {
+      return deleteTodo(completedTodo.id);
+    });
+
+    Promise.allSettled(deletePromises)
+      .then(results => {
+        const successfulDeletes = completedTodos.filter(
+          (_, index) => results[index].status === 'fulfilled',
+        );
+
+        setTodos(currentTodos =>
+          currentTodos.filter(
+            (todo: Todo) => !successfulDeletes.includes(todo),
+          ),
+        );
+
+        const errorResponse = results.find(
+          result => result.status === 'rejected',
+        );
+
+        if (errorResponse) {
+          setErrorMessage(ErrorNotification.deleteError);
+        }
+      })
+      .catch(() => {
+        setErrorMessage(ErrorNotification.deleteError);
+      });
+  };
+
+  const handleUpdateComplete = (todo: Todo) => {
+    const todoCompleted = { ...todo };
+
+    todoCompleted.completed = !todoCompleted.completed;
+    setProcessingTodoIds(prevLoadingIds => {
+      return [...prevLoadingIds, todo.id];
+    });
+
+    updateTodo(todoCompleted)
+      .then(res => {
+        setTodos(prevTodos =>
+          prevTodos.map((item: Todo) => (item.id === res.id ? res : item)),
+        );
+      })
+      .catch(() => {
+        setErrorMessage(ErrorNotification.updateError);
+        setTimeout(() => setErrorMessage(''), 3000);
+      })
+      .finally(() => {
+        setProcessingTodoIds([]);
+      });
+  };
+
+  const toggleAllTodosStatus = (currentTodos: Todo[]) => {
+    const activeTodos = currentTodos.filter(todo => !todo.completed);
+    let changeStatusPromises;
+
+    if (activeTodos.length === 0) {
+      changeStatusPromises = currentTodos.map((todo: Todo) => {
+        setProcessingTodoIds(prevTodosIds => {
+          return [...prevTodosIds, todo.id];
+        });
+
+        return updateTodo({
+          ...todo,
+          completed: false,
+        });
+      });
+    } else {
+      changeStatusPromises = activeTodos.map((todo: Todo) => {
+        setProcessingTodoIds(prevLoadingIds => {
+          return [...prevLoadingIds, todo.id];
+        });
+
+        return updateTodo({
+          ...todo,
+          completed: !todo.completed,
+        });
+      });
+    }
+
+    Promise.allSettled(changeStatusPromises)
+      .then(results => {
+        const successfulUpdates = results
+          .map((result, index) => {
+            if (result.status === 'fulfilled' && activeTodos.length === 0) {
+              return todos[index];
+            } else if (
+              result.status === 'fulfilled' &&
+              activeTodos.length !== 0
+            ) {
+              return activeTodos[index];
+            } else {
+              return null;
+            }
+          })
+          .filter(todo => todo !== null);
+
+        setTodos(prevTodos =>
+          prevTodos.map(todo =>
+            successfulUpdates.some(updatedTodo => updatedTodo.id === todo.id)
+              ? { ...todo, completed: !todo.completed }
+              : todo,
+          ),
+        );
+
+        const failedUpdates = results.some(
+          result => result.status === 'rejected',
+        );
+
+        if (failedUpdates) {
+          setErrorMessage(ErrorNotification.updateError);
+          setTimeout(() => setErrorMessage(''), 3000);
+        }
+      })
+      .catch(() => {
+        setErrorMessage(ErrorNotification.updateError);
+        setTimeout(() => setErrorMessage(''), 3000);
+      })
+      .finally(() => {
+        setProcessingTodoIds([]);
+      });
+  };
+
+  const handleTitleEdit = (
+    newTitle: string,
+    todoToUpdate: Todo,
+  ): Promise<boolean> => {
+    return new Promise(resolve => {
+      setProcessingTodoIds(prevTodosIds => {
+        return [...prevTodosIds, todoToUpdate.id];
+      });
+
+      updateTodo({
+        ...todoToUpdate,
+        title: newTitle,
+      })
+        .then(res => {
+          setTodos(prevTodos =>
+            prevTodos.map((item: Todo) => (item.id === res.id ? res : item)),
+          );
+
+          resolve(true);
+        })
+        .catch(() => {
+          setErrorMessage(ErrorNotification.updateError);
+          setTimeout(() => setErrorMessage(''), 3000);
+
+          resolve(false);
+        })
+        .finally(() => {
+          setProcessingTodoIds([]);
+        });
+    });
+  };
 
   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
+          addTodo={handleAddTodo}
+          title={title}
+          setTitle={setTitle}
+          todos={todos}
+          errorMessage={errorMessage}
+          isLoading={loading}
+          toggleAllTodosStatus={toggleAllTodosStatus}
+        />
+
+        <TodoList
+          todos={filteredTodos}
+          deleteSelectTodo={deleteSelectTodo}
+          tempTodo={tempTodo}
+          handleUpdateComplete={handleUpdateComplete}
+          selectedTodosIds={processingTodoIds}
+          handleTitleEdit={handleTitleEdit}
+        />
+
+        {!!todos.length && (
+          <Footer
+            setFilter={setFilter}
+            filter={filter}
+            todos={todos}
+            handleClearComplete={handleClearComplete}
+          />
+        )}
+      </div>
+      <div
+        data-cy="ErrorNotification"
+        className={classNames(
+          'notification',
+          'is-danger',
+          'is-light',
+          'has-text-weight-normal',
+          { hidden: !errorMessage },
+        )}
+      >
+        <button
+          data-cy="HideErrorButton"
+          type="button"
+          className="delete"
+          onClick={() => setErrorMessage('')}
+        />
+        {errorMessage}
+      </div>
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,24 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 1816;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const createTodo = (title: string) => {
+  return client.post<Todo>('/todos', {
+    userId: USER_ID,
+    title,
+    completed: false,
+  });
+};
+
+export const deleteTodo = (id: number) => {
+  return client.delete(`/todos/${id}`);
+};
+
+export const updateTodo = (todo: Partial<Todo>) => {
+  return client.patch<Todo>(`/todos/${todo.id}`, todo);
+};