Solution

README.md

@@ -41,4 +41,4 @@ Implement the ability to edit a todo title on double click:
 
 - Implement a solution following the [React task guideline](https://github.com/mate-academy/react_task-guideline#react-tasks-guideline).
 - Use the [React TypeScript cheat sheet](https://mate-academy.github.io/fe-program/js/extra/react-typescript).
-- Replace `<your_account>` with your Github username in the [DEMO LINK](https://<your_account>.github.io/react_todo-app-with-api/) and add it to the PR description.
+- Replace `<your_account>` with your Github username in the [DEMO LINK](https://viktoria-roik.github.io/react_todo-app-with-api/) and add it to the PR description.

src/App.tsx

@@ -1,24 +1,296 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, {
+  useEffect,
+  useRef,
+  useState,
+} from 'react';
+import classNames from 'classnames';
+import { Todo } from './types/Todo';
+import { Status } from './types/Status';
+import { Error } from './types/Error';
+import {
+  getTodos,
+  deleteTodo,
+  createTodo,
+  updateTodo,
+} from './api/todos';
+import { TodoList } from './components/TodoList/TodoList';
+import { TodoFilter } from './components/TodoFilter/TodoFilter';
 import { UserWarning } from './UserWarning';
+import { TodoError } from './components/TodoError/TodoError';
+import { TodoLoadingItem } from './components/TodoLoadingItem/TodoLoadingItem';
+import {
+  filterTodos,
+  getItemsLeftCountMessage,
+  getUpdatedTodos,
+} from './utils/functions';
 
-const USER_ID = 0;
+const USER_ID = 11521;
 
 export const App: React.FC = () => {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [status, setStatus] = useState<Status>(Status.All);
+  const [errorMessage, setErrorMessage] = useState(Error.None);
+  const [value, setValue] = useState('');
+  const [isSubmitted, setIsSubmitted] = useState(false);
+  const [isSubmiting, setIsSubmiting] = useState(false);
+  const [wasEdited, setWasEdited] = useState(false);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [processingIds, setProcessingIds] = useState<number[]>([]);
+  const [togglingId, setTogglingId] = useState<number | null>(null);
+
+  const inputRef = useRef<HTMLInputElement | null>(null);
+
+  useEffect(() => {
+    getTodos(USER_ID)
+      .then(setTodos)
+      .catch(() => setErrorMessage(Error.Load));
+  }, []);
+
+  useEffect(() => {
+    let timer: NodeJS.Timeout;
+
+    if (errorMessage) {
+      timer = setTimeout(() => {
+        setErrorMessage(Error.None);
+      }, 3000);
+    }
+
+    return () => {
+      if (timer) {
+        clearTimeout(timer);
+      }
+    };
+  }, [errorMessage]);
+
+  useEffect(() => {
+    if (wasEdited) {
+      inputRef.current?.focus();
+    }
+  }, [wasEdited]);
+
+  const visibleTodos = filterTodos(todos, status);
+
+  const activeTodosCount = todos.filter(todo => !todo.completed);
+  const completedTodosCount = todos.filter(todo => todo.completed);
+
+  function addTodo({ userId, title, completed }: Todo): Promise<void> {
+    setErrorMessage(Error.None);
+    setWasEdited(false);
+
+    return createTodo({ userId, title, completed })
+      .then(newTodo => {
+        setTodos(currentTodos => [...currentTodos, newTodo]);
+      })
+      .catch(() => {
+        setErrorMessage(Error.Add);
+      })
+      .finally(() => {
+        setWasEdited(true);
+      });
+  }
+
+  const handleSubmit = (event: React.ChangeEvent<HTMLFormElement>) => {
+    event.preventDefault();
+    setIsSubmitted(true);
+
+    const todoTitle = value.trim();
+
+    const newTodo = {
+      id: todos.length + 1,
+      title: todoTitle,
+      completed: false,
+      userId: USER_ID,
+    };
+
+    if (!todoTitle) {
+      setErrorMessage(Error.EmptyTitle);
+      setIsSubmitted(false);
+    } else {
+      addTodo(newTodo)
+        .then(() => setValue(''))
+        .finally(() => {
+          setTempTodo(null);
+          setIsSubmitted(false);
+        });
+    }
+  };
+
+  const onDelete = (todoId: number) => {
+    setProcessingIds((prevIds) => [...prevIds, todoId]);
+    deleteTodo(todoId)
+      .then(() => setTodos(
+        currentTodos => currentTodos.filter(
+          todo => todo.id !== todoId,
+        ),
+      ))
+      .catch(() => setErrorMessage(Error.Delete))
+      .finally(() => setProcessingIds(
+        (prevIds) => prevIds.filter(id => id !== todoId),
+      ));
+  };
+
+  const onDeleteCompleted = () => {
+    const allCompletedTodos = todos.filter(todo => todo.completed);
+
+    allCompletedTodos.forEach((todo) => {
+      onDelete(todo.id);
+    });
+  };
+
+  const handleChangeCompletedStatus = (
+    todoId: number,
+    isCompleted: boolean,
+  ) => {
+    setProcessingIds(prevState => [...prevState, todoId]);
+
+    return updateTodo(todoId, { completed: !isCompleted })
+      .then((currentTodo: Todo) => {
+        setTodos(prevState => getUpdatedTodos(
+          prevState,
+          currentTodo,
+          'completed',
+        ));
+      })
+      .catch(() => {
+        setErrorMessage(Error.Update);
+      })
+      .finally(() => {
+        setProcessingIds(prevState => prevState
+          .filter(id => id !== todoId));
+      });
+  };
+
+  const toggleAll = () => {
+    const allTodosAreCompleted = todos.length === completedTodosCount.length;
+
+    const todosToUpdate = allTodosAreCompleted
+      ? completedTodosCount
+      : activeTodosCount;
+
+    const promiseArray = todosToUpdate.map((todo) => {
+      const { id, completed } = todo;
+      const updatedCompletedStatus = !completed;
+
+      return updateTodo(id, { completed: updatedCompletedStatus });
+    });
+
+    setIsSubmiting(true);
+
+    Promise.all(promiseArray)
+      .then(() => {
+        setTodos(todos.map(todo => (
+          { ...todo, completed: !allTodosAreCompleted }
+        )));
+      })
+      .catch(() => setErrorMessage(Error.Toggle))
+      .finally(() => setIsSubmiting(false));
+  };
+
+  const updateTodos = (todoId: number, data: Todo) => {
+    setIsSubmitted(true);
+    setTogglingId(todoId);
+
+    updateTodo(todoId, data)
+      .then((receivedTodo) => {
+        setTodos((prevTodos) => prevTodos
+          .map((todo) => (todo.id === todoId ? receivedTodo : todo)));
+        setErrorMessage(Error.None);
+      })
+      .catch(() => setErrorMessage(Error.Update))
+      .finally(() => {
+        setTogglingId(null);
+        setIsSubmitted(false);
+      });
+  };
+
   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 className="todoapp__header">
+          {!!todos.length && (
+            <button
+              type="button"
+              data-cy="ToggleAllButton"
+              className={classNames('todoapp__toggle-all', {
+                active: todos.every(todo => todo.completed),
+              })}
+              onClick={toggleAll}
+              aria-label="Toggle All"
+            />
+          )}
+
+          <form onSubmit={handleSubmit}>
+            <input
+              data-cy="NewTodoField"
+              type="text"
+              className="todoapp__new-todo"
+              placeholder="What needs to be done?"
+              value={value}
+              ref={inputRef}
+              onChange={(event) => setValue(event.target.value)}
+              disabled={isSubmitted}
+              onBlur={() => setWasEdited(false)}
+              // eslint-disable-next-line jsx-a11y/no-autofocus
+              autoFocus
+            />
+          </form>
+        </header>
+
+        {!!todos.length && (
+          <>
+            <TodoList
+              todos={visibleTodos}
+              onDelete={onDelete}
+              processingIds={processingIds}
+              onToggle={handleChangeCompletedStatus}
+              togglingId={togglingId}
+              onUpdate={updateTodos}
+              isSubmitted={isSubmitted}
+              isSubmiting={isSubmiting}
+            />
+
+            {tempTodo && (
+              <TodoLoadingItem
+                tempTodo={tempTodo}
+                isSubmitted={isSubmitted}
+              />
+            )}
+            <footer className="todoapp__footer" data-cy="Footer">
+              <span className="todo-count" data-cy="TodosCounter">
+                {getItemsLeftCountMessage(activeTodosCount)}
+              </span>
+              <TodoFilter
+                todosFilterStatus={status}
+                handleFilterStatus={setStatus}
+              />
+              <button
+                data-cy="ClearCompletedButton"
+                type="button"
+                className={classNames('todoapp__clear-completed', {
+                  hidden: !completedTodosCount.length,
+                })}
+                disabled={!completedTodosCount}
+                onClick={onDeleteCompleted}
+              >
+                Clear completed
+              </button>
+            </footer>
+          </>
+        )}
+      </div>
+
+      <TodoError
+        errorMessage={errorMessage}
+        onErrorChange={() => {
+          setErrorMessage(Error.None);
+        }}
+      />
+    </div>
   );
 };

src/UserWarning.tsx

@@ -13,7 +13,7 @@ export const UserWarning: React.FC = () => (
       {' '}
       and save it in the app
       {' '}
-      <pre>const USER_ID = ...</pre>
+      <pre>const USER_ID = 11521</pre>
 
       All requests to the API must be sent with this
       <b> userId.</b>

src/api/todos.ts

@@ -0,0 +1,22 @@
+import { Todo } from '../types/Todo';
+import { TodoUpdateData } from '../types/TodoUpdateData';
+import { client } from '../utils/fetchClient';
+
+export const getTodos = (userId: number) => {
+  return client.get<Todo[]>(`/todos?userId=${userId}`);
+};
+
+export const createTodo = ({ title, completed, userId }: Omit<Todo, 'id'>) => {
+  return client.post<Todo>('/todos', { title, completed, userId });
+};
+
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const updateTodo = (
+  todoId: number,
+  data: TodoUpdateData,
+): Promise<Todo> => {
+  return client.patch(`/todos/${todoId}`, data);
+};

src/components/TodoError/TodoError.tsx

@@ -0,0 +1,34 @@
+import React from 'react';
+import classNames from 'classnames';
+import { Error } from '../../types/Error';
+
+type Props = {
+  errorMessage: Error,
+  onErrorChange: () => void
+};
+
+export const TodoError: React.FC<Props> = ({ errorMessage, onErrorChange }) => {
+  return (
+    <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={onErrorChange}
+        aria-label="Hide Error"
+      />
+      {errorMessage}
+    </div>
+  );
+};