Complete Task

src/App.tsx

@@ -1,26 +1,263 @@
-/* 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, useRef, useState } from 'react';
+
 import { UserWarning } from './UserWarning';
 
-const USER_ID = 0;
+import * as todoServices from './api/todos';
+
+import { ErrorMessage } from './types/ErrorMessage';
+import { Todo } from './types/Todo';
+import { FilterBy } from './types/FilterBy';
+
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { Footer } from './components/Footer';
+import { Error as ErrorCard } from './components/Error';
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [filterBy, setFilterBy] = useState<FilterBy>(FilterBy.all);
+  const [loadingTodos, setLoadingTodos] = useState<number[]>([]);
+
+  const [errorMessage, setErrorMessage] = useState<ErrorMessage>('');
+
+  const [inputText, setInputText] = useState('');
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const [currentTodoList, setCurrentTodoList] = useState<Todo[]>([]);
+
+  const focusInput = () => {
+    if (inputRef.current) {
+      inputRef.current.focus();
+    }
+  };
+
+  useEffect(() => {
+    focusInput();
+
+    todoServices
+      .getTodos()
+      .then(setTodos)
+      .catch(() => {
+        setErrorMessage('Unable to load todos');
+        setTimeout(() => setErrorMessage(''), 3000);
+      });
+  }, []);
+
+  const handleDeleteTodo = (id: number, callback: (arg: boolean) => void) => {
+    callback(true);
+    todoServices
+      .deleteTodo(id)
+      .then(() => setTodos(todos.filter(todo => todo.id !== id)))
+      .catch(() => {
+        setErrorMessage('Unable to delete a todo');
+        setTimeout(() => setErrorMessage(''), 3000);
+      })
+      .finally(() => {
+        callback(false);
+        focusInput();
+      });
+  };
+
+  const handleDeleteAllCompletedTodos = async () => {
+    setLoadingTodos(todos.filter(todo => todo.completed).map(todo => todo.id));
+    todoServices
+      .deleteArrOfTodos(todos.filter(todo => todo.completed))
+      .then(res => {
+        const rejectedTodos = res
+          .map((result, index) =>
+            result.status === 'rejected'
+              ? todos.filter(todo => todo.completed)[index]
+              : null,
+          )
+          .filter(todo => todo !== null);
+
+        setTodos(
+          todos.filter(todo => !todo.completed || rejectedTodos.includes(todo)),
+        );
+
+        if (rejectedTodos.length > 0) {
+          throw new Error('Some todos were not deleted');
+        }
+      })
+      .catch(() => {
+        setErrorMessage('Unable to delete a todo');
+        setTimeout(() => setErrorMessage(''), 3000);
+      })
+      .finally(() => {
+        setLoadingTodos([]);
+        focusInput();
+      });
+  };
+
+  const handleAddingTodo = () => {
+    if (inputRef.current) {
+      inputRef.current.disabled = true;
+
+      if (inputText.trim() === '') {
+        setErrorMessage('Title should not be empty');
+        setTimeout(() => setErrorMessage(''), 3000);
+        inputRef.current.disabled = false;
+        focusInput();
+
+        return;
+      }
+
+      setTempTodo({
+        id: 0,
+        userId: todoServices.USER_ID,
+        title: inputText.trim(),
+        completed: false,
+      });
+
+      todoServices
+        .addPost(inputText.trim())
+        .then(newTodo => {
+          setTodos(list => [...list, newTodo]);
+          setInputText('');
+        })
+        .catch(() => {
+          setErrorMessage('Unable to add a todo');
+          setTimeout(() => setErrorMessage(''), 3000);
+        })
+        .finally(() => {
+          if (inputRef.current) {
+            inputRef.current.disabled = false;
+          }
+
+          setTempTodo(null);
+          focusInput();
+        });
+    }
+  };
+
+  const handleUpdatingTodo = (
+    updatedTodo: Todo,
+    callback: (arg: boolean) => void,
+  ): Promise<void> => {
+    callback(true);
+
+    return todoServices
+      .updateTodo(updatedTodo)
+      .then(item =>
+        setTodos(currTodos => {
+          const newTodos = [...currTodos];
+          const index = newTodos.findIndex(todo => todo.id === item.id);
+
+          newTodos.splice(index, 1, updatedTodo);
+
+          return newTodos;
+        }),
+      )
+      .catch(() => {
+        setErrorMessage('Unable to update a todo');
+        setTimeout(() => setErrorMessage(''), 3000);
+        throw new Error('Unable to update a todo');
+      })
+      .finally(() => {
+        callback(false);
+        focusInput();
+      });
+  };
+
+  const switchTodos = (arr: Todo[]) => {
+    setLoadingTodos(arr.map(todo => todo.id));
+    todoServices
+      .switchTodosStatus(arr)
+      .then(result => {
+        const updatedTodos = result
+          .filter(res => res.status === 'fulfilled')
+          .map(res => res.value);
+
+        // Now update the state with the API results
+        setTodos(currTodos =>
+          currTodos.map(todo => {
+            const updatedTodo = updatedTodos.find(t => t.id === todo.id);
+
+            return updatedTodo ? { ...todo, ...updatedTodo } : todo;
+          }),
+        );
+      })
+      .catch(() => {
+        setErrorMessage('Unable to update a todo');
+        setTimeout(() => setErrorMessage(''), 3000);
+      })
+      .finally(() => {
+        setLoadingTodos([]);
+        focusInput();
+      });
+  };
+
+  const handleSwitchTodosStatus = () => {
+    const activeTodos = todos.filter(item => !item.completed);
+
+    if (activeTodos.length > 0) {
+      switchTodos(activeTodos);
+
+      return;
+    }
+
+    switchTodos(todos);
+  };
+
+  useEffect(() => {
+    const filteredTodos = todos.filter(item => {
+      return (
+        filterBy === FilterBy.all ||
+        (filterBy === FilterBy.active && !item.completed) ||
+        (filterBy === FilterBy.completed && item.completed)
+      );
+    });
+
+    setCurrentTodoList(filteredTodos);
+  }, [filterBy, todos]);
+
+  if (!todoServices.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
+          inputRef={inputRef}
+          inputText={inputText}
+          setInputText={setInputText}
+          createFunc={handleAddingTodo}
+          todos={todos}
+          completeFunc={handleSwitchTodosStatus}
+          loadingTodos={loadingTodos}
+        />
+
+        <TodoList
+          todos={currentTodoList}
+          handleDeleteTodo={handleDeleteTodo}
+          handleUpdateTodo={handleUpdatingTodo}
+          loadingTodos={loadingTodos}
+          tempTodo={tempTodo}
+        />
+
+        {/* Hide the footer if there are no todos */}
+        {todos.length > 0 && (
+          <Footer
+            todos={todos}
+            filterBy={filterBy}
+            setFilterBy={setFilterBy}
+            deleteCompletedTodos={handleDeleteAllCompletedTodos}
+          />
+        )}
+      </div>
+
+      {/* DON'T use conditional rendering to hide the notification */}
+      {/* Add the 'hidden' class to hide the message smoothly */}
+      <ErrorCard
+        errorMessage={errorMessage}
+        setErrorMessage={setErrorMessage}
+      />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,39 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 2088;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+// Add more methods here
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const deleteArrOfTodos = async (arr: Todo[]) => {
+  const result = await Promise.allSettled(arr.map(todo => deleteTodo(todo.id)));
+
+  return result;
+};
+
+export const addPost = (title: string) => {
+  return client.post<Todo>(`/todos`, {
+    title,
+    userId: USER_ID,
+    completed: false,
+  });
+};
+
+export const updateTodo = ({ id, userId, title, completed }: Todo) => {
+  return client.patch<Todo>(`/todos/${id}`, { id, userId, title, completed });
+};
+
+export const switchTodosStatus = async (arr: Todo[]) => {
+  const result = await Promise.allSettled(
+    arr.map(todo => updateTodo({ ...todo, completed: !todo.completed })),
+  );
+
+  return result;
+};

src/components/Error/Error.tsx

@@ -0,0 +1,33 @@
+/* eslint-disable jsx-a11y/label-has-associated-control */
+/* eslint-disable jsx-a11y/control-has-associated-label */
+import React from 'react';
+import { ErrorMessage } from '../../types/ErrorMessage';
+import classNames from 'classnames';
+
+type Props = {
+  errorMessage: ErrorMessage;
+  setErrorMessage: (arg: ErrorMessage) => void;
+};
+
+export const Error: React.FC<Props> = ({ errorMessage, setErrorMessage }) => {
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={classNames(
+        'notification is-danger is-light has-text-weight-normal',
+        { hidden: errorMessage === ('' as ErrorMessage) },
+      )}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+        onClick={e => {
+          e.preventDefault();
+          setErrorMessage('');
+        }}
+      />
+      {errorMessage}
+    </div>
+  );
+};

src/components/Error/index.tsx

@@ -0,0 +1 @@
+export * from './Error';