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

src/App.tsx

@@ -1,26 +1,217 @@
-/* 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, { ChangeEvent, useEffect, useRef, useState } from 'react';
 import { UserWarning } from './UserWarning';
-
-const USER_ID = 0;
+import {
+  addTodo,
+  deleteTodo,
+  getTodos,
+  updateTodo,
+  USER_ID,
+} from './api/todos';
+import { Todo } from './types/Todo';
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { Footer } from './components/Footer';
+import { ErrorNotification } from './components/ErrorNotification';
+import { Errors } from './types/ErrorsEnum';
+import { FilterValues } from './types/FilterValuesEnum';
 
 export const App: React.FC = () => {
+  const [todoStatus, setTodoStatus] = useState<FilterValues>(FilterValues.All);
+  const [title, setTitle] = useState('');
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [loadingIds, setLoadingIds] = useState<number[]>([]);
+  const [error, setError] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const inputFocusRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (!USER_ID) {
+      return;
+    }
+
+    inputFocusRef.current?.focus();
+
+    getTodos()
+      .then(todosFromServer => setTodos(todosFromServer))
+      .catch(() => setError(Errors.unableToLoadTodosError));
+  }, []);
+
+  useEffect(() => {
+    if (!error) {
+      return;
+    }
+
+    const timer = setTimeout(() => setError(Errors.clearErrors), 3000);
+
+    return () => clearTimeout(timer);
+  }, [error]);
+
+  useEffect(() => {
+    if (!isSubmitting) {
+      inputFocusRef.current?.focus();
+    }
+  }, [isSubmitting]);
+
+  const handleInputChange = (event: ChangeEvent<HTMLInputElement>) => {
+    setTitle(event.target.value);
+  };
+
+  const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+    const trimmedTitle = title.trim();
+
+    if (trimmedTitle.length === 0) {
+      setIsSubmitting(false);
+      setError(Errors.emptyTitleError);
+
+      return;
+    }
+
+    setIsSubmitting(true);
+    setTempTodo({
+      id: 0,
+      title: trimmedTitle,
+      completed: false,
+      userId: USER_ID,
+    });
+
+    addTodo({ title: trimmedTitle, completed: false, userId: USER_ID })
+      .then(newTodo => {
+        setTodos(prev => [...prev, newTodo]);
+        setTitle('');
+      })
+      .catch(() => {
+        setError(Errors.unableToAddTodoError);
+      })
+      .finally(() => {
+        setIsSubmitting(false);
+        setTempTodo(null);
+      });
+  };
+
+  const handleDeleteTodo = (todoId: number) => {
+    setLoadingIds(prev => [...prev, todoId]);
+
+    deleteTodo(todoId)
+      .then(() =>
+        setTodos(currentTodos => {
+          return currentTodos.filter(todo => todo.id !== todoId);
+        }),
+      )
+      .catch(() => setError(Errors.unableToDeleteATodoError))
+      .finally(() => {
+        setLoadingIds(prev => prev.filter(id => id !== todoId));
+        inputFocusRef.current?.focus();
+      });
+  };
+
+  const handleUpdateTodo = (updatedTodo: Todo): Promise<void> => {
+    setLoadingIds(prev => [...prev, updatedTodo.id]);
+
+    return updateTodo(updatedTodo)
+      .then(todo => {
+        setTodos(currentTodos => {
+          const newTodos = [...currentTodos];
+          const index = newTodos.findIndex(
+            todoIndex => todoIndex.id === updatedTodo.id,
+          );
+
+          newTodos.splice(index, 1, todo);
+
+          return newTodos;
+        });
+      })
+      .catch(e => {
+        setError(Errors.unableUpdateTodoError);
+        throw e;
+      })
+      .finally(() => {
+        setLoadingIds(prev => prev.filter(id => id !== updatedTodo.id));
+      });
+  };
+
+  const handleToggleAll = () => {
+    const allCompleted = todos.every(todo => todo.completed);
+    const todosToUpdate = todos.filter(todo => todo.completed === allCompleted);
+
+    todosToUpdate.forEach(todo => {
+      handleUpdateTodo({ ...todo, completed: !allCompleted });
+    });
+  };
+
+  const handleClearCompletedTodo = () => {
+    const completedTodos = todos.filter(todo => todo.completed);
+    const completedIds = completedTodos.map(todo => todo.id);
+
+    setLoadingIds(prev => [...prev, ...completedIds]);
+
+    Promise.all(
+      completedIds.map(id =>
+        deleteTodo(id)
+          .then(() => setTodos(prev => prev.filter(todo => todo.id !== id)))
+          .catch(() => setError(Errors.unableToDeleteATodoError))
+          .finally(() =>
+            setLoadingIds(prev => prev.filter(loadingId => loadingId !== id)),
+          ),
+      ),
+    ).finally(() => inputFocusRef.current?.focus());
+  };
+
+  const filteredTodos = todos.filter(todo => {
+    if (todoStatus === FilterValues.All) {
+      return true;
+    }
+
+    if (todoStatus === FilterValues.Active) {
+      return !todo.completed;
+    }
+
+    return todo.completed;
+  });
+
   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
+          todos={todos}
+          title={title}
+          handleInputChange={handleInputChange}
+          handleSubmit={handleSubmit}
+          handleToggleAll={handleToggleAll}
+          inputRef={inputFocusRef}
+          isSubmitting={isSubmitting}
+        />
+
+        {todos.length > 0 && (
+          <TodoList
+            filteredTodos={filteredTodos}
+            loadingIds={loadingIds}
+            tempTodo={tempTodo}
+            handleDeleteTodo={handleDeleteTodo}
+            updateTodo={handleUpdateTodo}
+          />
+        )}
+
+        {todos.length > 0 && (
+          <Footer
+            todos={todos}
+            todoStatus={todoStatus}
+            setTodoStatus={setTodoStatus}
+            clearCompletedTodo={handleClearCompletedTodo}
+          />
+        )}
+      </div>
+
+      <ErrorNotification error={error} setError={setError} />
+    </div>
   );
 };

src/api/todos.ts

@@ -0,0 +1,20 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 4162;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const addTodo = (todo: Omit<Todo, 'id'>) => {
+  return client.post<Todo>(`/todos`, todo);
+};
+
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const updateTodo = ({ id, ...todoData }: Todo) => {
+  return client.patch<Todo>(`/todos/${id}`, todoData);
+};

src/components/ErrorNotification.tsx

@@ -0,0 +1,26 @@
+import classNames from 'classnames';
+
+type Props = {
+  error: string;
+  setError: (value: string) => void;
+};
+
+export const ErrorNotification = ({ error, setError }: Props) => {
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={classNames(
+        'notification is-danger is-light has-text-weight-normal',
+        { hidden: !error },
+      )}
+    >
+      <button
+        onClick={() => setError('')}
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+      />
+      {error}
+    </div>
+  );
+};

src/components/Filter.tsx

@@ -0,0 +1,46 @@
+import classNames from 'classnames';
+import { FilterValues } from '../types/FilterValuesEnum';
+
+type Props = {
+  todoStatus: FilterValues;
+  setTodoStatus: (value: FilterValues) => void;
+};
+
+export const Filter = ({ todoStatus, setTodoStatus }: Props) => {
+  return (
+    <nav className="filter" data-cy="Filter">
+      <a
+        href="#/"
+        className={classNames('filter__link', {
+          selected: todoStatus === FilterValues.All,
+        })}
+        data-cy="FilterLinkAll"
+        onClick={() => setTodoStatus(FilterValues.All)}
+      >
+        All
+      </a>
+
+      <a
+        href="#/active"
+        className={classNames('filter__link', {
+          selected: todoStatus === FilterValues.Active,
+        })}
+        data-cy="FilterLinkActive"
+        onClick={() => setTodoStatus(FilterValues.Active)}
+      >
+        Active
+      </a>
+
+      <a
+        href="#/completed"
+        className={classNames('filter__link', {
+          selected: todoStatus === FilterValues.Completed,
+        })}
+        data-cy="FilterLinkCompleted"
+        onClick={() => setTodoStatus(FilterValues.Completed)}
+      >
+        Completed
+      </a>
+    </nav>
+  );
+};

src/components/Footer.tsx

@@ -0,0 +1,36 @@
+import { Todo } from '../types/Todo';
+import { TodosCounter } from './TodosCounter';
+import { Filter } from './Filter';
+import { FilterValues } from '../types/FilterValuesEnum';
+
+type Props = {
+  todos: Todo[];
+  todoStatus: FilterValues;
+  setTodoStatus: (value: FilterValues) => void;
+  clearCompletedTodo: () => void;
+};
+
+export const Footer = ({
+  todos,
+  todoStatus,
+  setTodoStatus,
+  clearCompletedTodo,
+}: Props) => {
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <TodosCounter todos={todos} />
+
+      <Filter todoStatus={todoStatus} setTodoStatus={setTodoStatus} />
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={todos.every(todo => !todo.completed)}
+        onClick={clearCompletedTodo}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};