Initital solution

README.md

@@ -47,4 +47,4 @@ 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://v1rnt.github.io/react_todo-app-with-api/) and add it to the PR description.

src/App.tsx

@@ -1,26 +1,170 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
-import { UserWarning } from './UserWarning';
+import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import { deleteTodo, getTodos, patchTodo } from './api/todos';
 
-const USER_ID = 0;
+import { Todo } from './types/Todo';
+import { Filter } from './types/Filter';
+import { Errors } from './types/Errors';
+
+import { Footer } from './components/Footer';
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { ErrorMessage } from './components/ErrorMessage';
+
+import { handleError } from './utils/handleError';
+import { getFilteredTodos } from './utils/getFilteredTodos';
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
-    return <UserWarning />;
-  }
+  const [todosFromServer, setTodosFromServer] = useState<Todo[]>([]);
+  const [errorMessage, setErrorMessage] = useState<Errors>(Errors.Default);
+  const [filterOption, setFilterOption] = useState<Filter>(Filter.All);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [deletionIds, setDeletionIds] = useState<number[]>([]);
+  const [pendingTodos, setPendingTodos] = useState<Todo[]>([]);
+
+  const completedTodoIds = useMemo(() => {
+    return todosFromServer.filter(todo => todo.completed).map(todo => todo.id);
+  }, [todosFromServer]);
+
+  const uncompletedTodos = useMemo(() => {
+    return todosFromServer.filter(todo => !todo.completed);
+  }, [todosFromServer]);
+
+  const uncompletedTodosAmount = uncompletedTodos.length;
+
+  const filteredTodos = useMemo(() => {
+    return getFilteredTodos(todosFromServer, filterOption);
+  }, [todosFromServer, filterOption]);
+
+  const handleDeleteTodos = useCallback((ids: number[]) => {
+    Promise.all(
+      ids.map(id => {
+        setDeletionIds(current => [...current, id]);
+
+        deleteTodo(id)
+          .then(() => {
+            setTodosFromServer(current =>
+              current.filter(todo => todo.id !== id),
+            );
+          })
+          .catch(() => {
+            handleError(setErrorMessage, Errors.DeleteTodo);
+          })
+          .finally(() =>
+            setDeletionIds(currIds => currIds.filter(currId => currId !== id)),
+          );
+      }),
+    );
+  }, []);
+
+  const handleChangeTodos = useCallback(
+    (newTodos: Todo[]) => {
+      return Promise.all(
+        newTodos.map(todo => {
+          setPendingTodos(current => [...current, todo]);
+
+          const { id, ...todoBody } = todo;
+
+          return patchTodo(todoBody, id)
+            .then(() => {
+              setTodosFromServer(current =>
+                current.map(currentTodo => {
+                  return currentTodo.id !== todo.id ? currentTodo : todo;
+                }),
+              );
+            })
+            .catch(() => {
+              handleError(setErrorMessage, Errors.UpdateTodo);
+              throw new Error(errorMessage);
+            })
+            .finally(() => setPendingTodos([]));
+        }),
+      );
+    },
+    [errorMessage],
+  );
+
+  const handleToggleCompleted = (id: number, updatedField: Partial<Todo>) => {
+    setPendingTodos(current => [...current]);
+
+    return patchTodo(updatedField, id)
+      .then((updatedTodo: Todo) =>
+        setTodosFromServer(current =>
+          current.map(todo => (todo.id === id ? updatedTodo : todo)),
+        ),
+      )
+      .catch(() => {
+        handleError(setErrorMessage, Errors.UpdateTodo);
+        throw new Error(errorMessage);
+      })
+      .finally(() =>
+        setPendingTodos(current => current.filter(todo => todo.id !== id)),
+      );
+  };
+
+  const handleToggleCompletedAll = () => {
+    if (uncompletedTodos && uncompletedTodosAmount) {
+      Promise.allSettled(
+        uncompletedTodos.map(({ id }) =>
+          handleToggleCompleted(id, { completed: true }),
+        ),
+      );
+    } else {
+      Promise.allSettled(
+        todosFromServer.map(({ id }) =>
+          handleToggleCompleted(id, { completed: false }),
+        ),
+      );
+    }
+  };
+
+  useEffect(() => {
+    getTodos()
+      .then(setTodosFromServer)
+      .catch(() => handleError(setErrorMessage, Errors.LoadingTodos));
+  }, []);
 
   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
+          setTodos={setTodosFromServer}
+          setError={setErrorMessage}
+          setTempTodo={setTempTodo}
+          tempTodo={tempTodo}
+          uncompletedTodosAmount={uncompletedTodosAmount}
+          todos={todosFromServer}
+          onToggleCompletedAll={handleToggleCompletedAll}
+        />
+
+        {!!todosFromServer.length && (
+          <>
+            <TodoList
+              todos={filteredTodos}
+              tempTodo={tempTodo}
+              deletionIds={deletionIds}
+              pendingTodos={pendingTodos}
+              errorMessage={errorMessage}
+              onTodosChange={handleChangeTodos}
+              onDeleteTodos={handleDeleteTodos}
+            />
+            <Footer
+              filterOption={filterOption}
+              completedTodoIds={completedTodoIds}
+              uncompletedTodosAmount={uncompletedTodosAmount}
+              setFilterOption={setFilterOption}
+              setDeletionIds={setDeletionIds}
+              onDeleteTodos={handleDeleteTodos}
+            />
+          </>
+        )}
+      </div>
+
+      <ErrorMessage
+        errorMessage={errorMessage}
+        setErrorMessage={setErrorMessage}
+      />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,16 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 1606;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const postTodo = (todo: Omit<Todo, 'id'>): Promise<Todo> =>
+  client.post<Todo>('/todos', todo);
+
+export const deleteTodo = (todoId: number) => client.delete(`/todos/${todoId}`);
+
+export const patchTodo = (props: Partial<Todo>, id: number): Promise<Todo> =>
+  client.patch<Todo>(`/todos/${id}`, props);

src/components/ErrorMessage/ErrorMessage.tsx

@@ -0,0 +1,28 @@
+import { FC, Dispatch } from 'react';
+import cn from 'classnames';
+import { Errors } from '../../types/Errors';
+
+type Props = {
+  errorMessage: Errors;
+  setErrorMessage: Dispatch<React.SetStateAction<Errors>>;
+};
+
+export const ErrorMessage: FC<Props> = ({ errorMessage, setErrorMessage }) => {
+  return (
+    <div
+      data-cy="ErrorNotification"
+      // eslint-disable-next-line max-len
+      className={cn('notification is-danger is-light has-text-weight-normal', {
+        hidden: !errorMessage,
+      })}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className={cn('delete', { hidden: !errorMessage })}
+        onClick={() => setErrorMessage(Errors.Default)}
+      />
+      {errorMessage}
+    </div>
+  );
+};

src/components/ErrorMessage/index.ts

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

src/components/Footer/Footer.tsx

@@ -0,0 +1,56 @@
+import { FC, Dispatch, SetStateAction } from 'react';
+import { Filter } from '../../types/Filter';
+import cn from 'classnames';
+
+type Props = {
+  completedTodoIds: number[];
+  uncompletedTodosAmount: number;
+  filterOption: Filter;
+  setFilterOption: Dispatch<SetStateAction<Filter>>;
+  setDeletionIds: Dispatch<SetStateAction<number[]>>;
+  onDeleteTodos: (ids: number[]) => void;
+};
+
+export const Footer: FC<Props> = ({
+  completedTodoIds,
+  uncompletedTodosAmount,
+  filterOption,
+  setFilterOption,
+  onDeleteTodos,
+}) => {
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {uncompletedTodosAmount} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Filter).map(filter => {
+          return (
+            <a
+              href={filter === 'All' ? '#/' : `#/${filter.toLowerCase()}`}
+              className={cn('filter__link', {
+                selected: filter === filterOption,
+              })}
+              data-cy={`FilterLink${filter}`}
+              key={filter}
+              onClick={() => setFilterOption(filter)}
+            >
+              {filter}
+            </a>
+          );
+        })}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        onClick={() => onDeleteTodos(completedTodoIds)}
+        disabled={!completedTodoIds.length}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/Footer/index.ts

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

src/components/Header/Header.tsx

@@ -0,0 +1,96 @@
+import {
+  FC,
+  Dispatch,
+  SetStateAction,
+  useRef,
+  useEffect,
+  useState,
+} from 'react';
+import cn from 'classnames';
+import { InputForm } from '../InputForm';
+import { Todo } from '../../types/Todo';
+import { Errors } from '../../types/Errors';
+import { handleError } from '../../utils/handleError';
+import { postTodo, USER_ID } from '../../api/todos';
+
+type Props = {
+  todos: Todo[];
+  tempTodo: Todo | null;
+  uncompletedTodosAmount: number;
+  setTempTodo: Dispatch<SetStateAction<Todo | null>>;
+  setError: Dispatch<SetStateAction<Errors>>;
+  setTodos: Dispatch<SetStateAction<Todo[]>>;
+  onToggleCompletedAll: () => void;
+};
+
+export const Header: FC<Props> = ({
+  todos,
+  tempTodo,
+  uncompletedTodosAmount,
+  setTempTodo,
+  setError,
+  setTodos,
+  onToggleCompletedAll,
+}) => {
+  const [inputValue, setInputValue] = useState('');
+  const inputRef = useRef<HTMLInputElement | null>(null);
+
+  const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+
+    const trimmedInputValues = inputValue.trim();
+
+    if (!trimmedInputValues) {
+      handleError(setError, Errors.EmptyTitle);
+
+      return;
+    }
+
+    const temporaryTodo: Todo = {
+      id: 0,
+      userId: USER_ID,
+      title: trimmedInputValues,
+      completed: false,
+    };
+
+    setTempTodo(temporaryTodo);
+
+    postTodo(temporaryTodo)
+      .then(res => {
+        setTodos(current => [...current, res]);
+        setInputValue('');
+        setTempTodo(null);
+      })
+      .catch(() => {
+        setTempTodo(null);
+        handleError(setError, Errors.AddTodo);
+      });
+  };
+
+  useEffect(() => {
+    inputRef.current?.focus();
+  }, [todos, tempTodo]);
+
+  return (
+    <header className="todoapp__header">
+      {!!todos.length && (
+        <button
+          type="button"
+          className={cn('todoapp__toggle-all', {
+            active: uncompletedTodosAmount === 0,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={onToggleCompletedAll}
+        />
+      )}
+
+      <InputForm
+        handleSubmit={handleSubmit}
+        inputRef={inputRef}
+        tempTodo={tempTodo}
+        inputValue={inputValue}
+        setInputValue={setInputValue}
+      />
+    </header>
+  );
+};