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://andrushchenkoo.github.io/react_todo-app-with-api/) and add it to the PR description.

src/App.tsx

@@ -1,26 +1,163 @@
-/* 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 { UserWarning } from './UserWarning';
-
-const USER_ID = 0;
+import React, { useEffect, useMemo, useState } from 'react';
+import { Todo } from './types/Todo';
+import { TodoHeader } from './components/TodoHeader';
+import { TodoFooter } from './components/TodoFooter';
+import { ErrorNotification } from './components/ErrorNotification';
+import {
+  addTodo,
+  deleteTodo,
+  getTodos,
+  updateTodo,
+  USER_ID,
+} from './api/todos';
+import { Error } from './types/Error';
+import { Filter } from './types/Filter';
+import { TodoList } from './components/TodoList';
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
-    return <UserWarning />;
-  }
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [errorMessage, setErrorMessage] = useState<Error | null>(null);
+  const [filter, setFilter] = useState<Filter>(Filter.All);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [loadingIds, setLoadingIds] = useState<number[]>([]);
+
+  useEffect(() => {
+    (async () => {
+      try {
+        const data = await getTodos();
+
+        setTodos(data);
+      } catch (err) {
+        setErrorMessage(Error.LoadTodos);
+      }
+    })();
+  }, []);
+
+  const filteredTodos = useMemo(() => {
+    if (filter === Filter.All) {
+      return todos;
+    }
+
+    return todos.filter(todo => {
+      return filter === Filter.Completed ? todo.completed : !todo.completed;
+    });
+  }, [todos, filter]);
+
+  const todosCompletedCounter: number = useMemo(() => {
+    return todos.filter(todo => todo.completed).length;
+  }, [todos]);
+
+  const todosCounter: number = useMemo(() => {
+    return todos.length - todosCompletedCounter;
+  }, [todos, todosCompletedCounter]);
+
+  const areAllCompletedTodo: boolean = useMemo(() => {
+    return todos.every(todo => todo.completed);
+  }, [todos]);
+
+  const onAddTodo = async (todoTitle: string) => {
+    setTempTodo({ id: 0, title: todoTitle, completed: false, userId: USER_ID });
+    try {
+      const newTodo = await addTodo({ title: todoTitle, completed: false });
+
+      setTodos(prev => [...prev, newTodo]);
+    } catch (err) {
+      setErrorMessage(Error.AddTodos);
+      throw err;
+    } finally {
+      setTempTodo(null);
+    }
+  };
+
+  const onDeleteTodo = async (todoId: number) => {
+    setLoadingIds(prev => [...prev, todoId]);
+    try {
+      await deleteTodo(todoId);
+
+      setTodos(prev => prev.filter(todo => todo.id !== todoId));
+    } catch (err) {
+      setErrorMessage(Error.DeleteTodos);
+      throw err;
+    } finally {
+      setLoadingIds(prev => prev.filter(id => id !== todoId));
+    }
+  };
+
+  const onClearCompleted = async () => {
+    const completedTodos = todos.filter(todo => todo.completed);
+
+    completedTodos.forEach(todo => onDeleteTodo(todo.id));
+  };
+
+  const onUpdateTodo = async (todoToUpdate: Todo) => {
+    setLoadingIds(prev => [...prev, todoToUpdate.id]);
+    try {
+      const updatedTodo = await updateTodo(todoToUpdate);
+
+      setTodos(prev =>
+        prev.map(todo => (todo.id === updatedTodo.id ? updatedTodo : todo)),
+      );
+    } catch (err) {
+      setErrorMessage(Error.UpdateTodos);
+      throw err;
+    } finally {
+      setLoadingIds(prev => prev.filter(id => id !== todoToUpdate.id));
+    }
+  };
+
+  const onToggleAll = async () => {
+    if (todosCounter > 0) {
+      const activeTodos = todos.filter(todo => !todo.completed);
+
+      activeTodos.forEach(todo => {
+        onUpdateTodo({ ...todo, completed: true });
+      });
+    } else {
+      todos.forEach(todo => {
+        onUpdateTodo({ ...todo, completed: false });
+      });
+    }
+  };
 
   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">
+        <TodoHeader
+          todos={todos}
+          onAddTodo={onAddTodo}
+          setErrorMessage={setErrorMessage}
+          isInputDisabled={!!tempTodo}
+          onToggleAll={onToggleAll}
+          areAllCompletedTodo={areAllCompletedTodo}
+        />
+
+        {(!!todos.length || tempTodo) && (
+          <>
+            <TodoList
+              filteredTodos={filteredTodos}
+              loadingIds={loadingIds}
+              onDeleteTodo={onDeleteTodo}
+              tempTodo={tempTodo}
+              onUpdateTodo={onUpdateTodo}
+            />
+            <TodoFooter
+              filter={filter}
+              setFilter={setFilter}
+              todosCounter={todosCounter}
+              onClearCompleted={onClearCompleted}
+              todosCompletedCounter={todosCompletedCounter}
+            />
+          </>
+        )}
+      </div>
+      <ErrorNotification
+        error={errorMessage}
+        setErrorMessage={setErrorMessage}
+      />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,23 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 2167;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const addTodo = (newTodo: Omit<Todo, 'id' | 'userId'>) => {
+  return client.post<Todo>('/todos', {
+    ...newTodo,
+    userId: USER_ID,
+  });
+};
+
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const updateTodo = (todo: Todo) => {
+  return client.patch<Todo>(`/todos/${todo.id}`, todo);
+};

src/components/ErrorNotification.tsx

@@ -0,0 +1,44 @@
+import React, { Dispatch, SetStateAction, useEffect } from 'react';
+import cn from 'classnames';
+import { Error } from '../types/Error';
+
+type Props = {
+  error: Error | null;
+  setErrorMessage: Dispatch<SetStateAction<Error | null>>;
+};
+export const ErrorNotification: React.FC<Props> = props => {
+  const { error, setErrorMessage } = props;
+
+  useEffect(() => {
+    if (!error) {
+      return;
+    }
+
+    const timerId = setTimeout(() => {
+      setErrorMessage(null);
+    }, 3000);
+
+    return () => {
+      clearTimeout(timerId);
+    };
+  }, [error, setErrorMessage]);
+
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={cn('notification is-danger is-light has-text-weight-normal', {
+        hidden: !error,
+      })}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+        onClick={() => {
+          setErrorMessage(null);
+        }}
+      />
+      {error}
+    </div>
+  );
+};

src/components/TodoFooter.tsx

@@ -0,0 +1,59 @@
+import React, { Dispatch, SetStateAction } from 'react';
+import cn from 'classnames';
+import { Filter } from '../types/Filter';
+
+type Props = {
+  filter: Filter;
+  setFilter: Dispatch<SetStateAction<Filter>>;
+  todosCounter: number;
+  todosCompletedCounter: number;
+  onClearCompleted: () => Promise<void>;
+};
+
+export const TodoFooter: React.FC<Props> = props => {
+  const {
+    filter,
+    setFilter,
+    todosCounter,
+    onClearCompleted,
+    todosCompletedCounter,
+  } = props;
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {todosCounter} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Filter).map(filterStatus => (
+          <a
+            key={filterStatus}
+            href={`#/${filterStatus === Filter.All ? '' : filterStatus.toLowerCase()}`}
+            className={cn('filter__link', {
+              selected: filter === filterStatus,
+            })}
+            data-cy={`FilterLink${filterStatus}`}
+            onClick={() => {
+              setFilter(filterStatus);
+            }}
+          >
+            {filterStatus}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        disabled={todosCompletedCounter === 0}
+        data-cy="ClearCompletedButton"
+        onClick={() => {
+          onClearCompleted();
+        }}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/TodoHeader.tsx

@@ -0,0 +1,75 @@
+import { Dispatch, SetStateAction, useEffect, useRef, useState } from 'react';
+import cn from 'classnames';
+import { Error } from '../types/Error';
+import { Todo } from '../types/Todo';
+
+type Props = {
+  onAddTodo: (value: string) => Promise<void>;
+  setErrorMessage: Dispatch<SetStateAction<Error | null>>;
+  isInputDisabled: boolean;
+  todos: Todo[];
+  onToggleAll: () => Promise<void>;
+  areAllCompletedTodo: boolean;
+};
+export const TodoHeader: React.FC<Props> = props => {
+  const {
+    onAddTodo,
+    setErrorMessage,
+    isInputDisabled,
+    todos,
+    onToggleAll,
+    areAllCompletedTodo,
+  } = props;
+
+  const [inputValue, setInputValue] = useState('');
+
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const onSubmit = async (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+    if (inputValue.trim() === '') {
+      setErrorMessage(Error.EmptyTitle);
+
+      return;
+    }
+
+    try {
+      await onAddTodo(inputValue.trim());
+      setInputValue('');
+    } catch (err) {}
+  };
+
+  useEffect(() => {
+    if (inputRef.current) {
+      inputRef.current.focus();
+    }
+  }, [isInputDisabled, todos.length]);
+
+  return (
+    <header className="todoapp__header">
+      {todos.length !== 0 && (
+        <button
+          type="button"
+          className={cn('todoapp__toggle-all', {
+            active: areAllCompletedTodo,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={onToggleAll}
+        />
+      )}
+
+      <form onSubmit={onSubmit}>
+        <input
+          data-cy="NewTodoField"
+          type="text"
+          className="todoapp__new-todo"
+          placeholder="What needs to be done?"
+          ref={inputRef}
+          value={inputValue}
+          onChange={event => setInputValue(event.target.value)}
+          disabled={isInputDisabled}
+        />
+      </form>
+    </header>
+  );
+};