diff --git a/README.md b/README.md
index af7dae81f6..b69b06391d 100644
--- a/README.md
+++ b/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://dpidlutska.github.io/react_todo-app-with-api/) and add it to the PR description.
diff --git a/src/App.tsx b/src/App.tsx
index 5749bdf784..74a5aa2eaa 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,24 +1,55 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
-import { UserWarning } from './UserWarning';
-
-const USER_ID = 0;
+import React, {
+  useContext,
+  useEffect, useMemo, useState,
+} from 'react';
+import { TodoForm } from './components/TodoForm';
+import { TodoList } from './components/TodoList';
+import { TodoFilter } from './components/TodoFilter';
+import * as todoService from './api/todos';
+import { TodosFilter } from './types/TodosFilter';
+import { getFilteredTodos } from './utils/getFilteredTodos';
+import { TodoContext } from './Context/TodoContext';
+import { ErrorNotification } from './components/ErrorNotification';
 
 export const App: React.FC = () => {
-  if (!USER_ID) {
-    return <UserWarning />;
-  }
+  const {
+    todos,
+    setTodos,
+    setErrorMessage,
+  } = useContext(TodoContext);
+
+  const [filter, setFilter] = useState(TodosFilter.All);
+
+  useEffect(() => {
+    todoService.getTodos()
+      .then(setTodos)
+      .catch(() => {
+        setErrorMessage('Unable to load todos');
+      });
+  }, []);
+
+  const filteredTodos = useMemo(() => {
+    return getFilteredTodos(todos, filter);
+  }, [todos, filter]);
 
   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>
+    <div className="todoapp">
+      <h1 className="todoapp__title">todos</h1>
+
+      <div className="todoapp__content">
+        <TodoForm />
+        <TodoList
+          todos={filteredTodos}
+        />
+        {Boolean(todos.length) && (
+          <TodoFilter
+            filter={filter}
+            onFilterChange={setFilter}
+          />
+        )}
 
-      <p className="subtitle">Styles are already copied</p>
-    </section>
+      </div>
+      <ErrorNotification />
+    </div>
   );
 };
diff --git a/src/Context/TodoContext.tsx b/src/Context/TodoContext.tsx
new file mode 100644
index 0000000000..d784e01c24
--- /dev/null
+++ b/src/Context/TodoContext.tsx
@@ -0,0 +1,176 @@
+import React, { createContext, useMemo, useState } from 'react';
+import { Todo } from '../types/Todo';
+import { USER_ID } from '../utils/constants';
+import * as todoService from '../api/todos';
+import { getCompletedTodos, getUncompletedTodos } from '../utils/countTodos';
+
+interface TodoContextTypes {
+  todos: Todo[];
+  setTodos: React.Dispatch<React.SetStateAction<Todo[]>>;
+  completedTodos: Todo[];
+  uncompletedTodos: Todo[];
+  errorMessage: string;
+  setErrorMessage: React.Dispatch<React.SetStateAction<string>>;
+  tempTodo: Todo | null;
+  setTempTodo: React.Dispatch<React.SetStateAction<Todo | null>>;
+  todosIdToProcess: number[];
+  setTodosIdToProcess: React.Dispatch<React.SetStateAction<number[]>>;
+  handleAddTodo: (todoTitle: string) => Promise<void>;
+  handleDeleteTodo: (todoId: number) => void;
+  handleRenameTodo: (todo: Todo, newTodoTitle: string) => void;
+  handleClearCompletedTodos: () => void;
+  handleStatusTodoChange: (todo: Todo) => void;
+}
+
+const initTodoContext: TodoContextTypes = {
+  todos: [],
+  setTodos: () => {},
+  completedTodos: [],
+  uncompletedTodos: [],
+  errorMessage: '',
+  setErrorMessage: () => {},
+  tempTodo: null,
+  setTempTodo: () => {},
+  todosIdToProcess: [],
+  setTodosIdToProcess: () => {},
+  handleAddTodo: async () => {},
+  handleDeleteTodo: () => {},
+  handleRenameTodo: () => {},
+  handleClearCompletedTodos: () => {},
+  handleStatusTodoChange: () => {},
+};
+
+export const TodoContext = createContext(initTodoContext);
+
+type Props = {
+  children: React.ReactNode;
+};
+
+export const TodoProvider: React.FC<Props> = ({ children }) => {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [errorMessage, setErrorMessage] = useState('');
+  const [todosIdToProcess, setTodosIdToProcess] = useState<number[]>([]);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const completedTodos = getCompletedTodos(todos);
+  const uncompletedTodos = getUncompletedTodos(todos);
+
+  const handleAddTodo = (todoTitle: string) => {
+    setTempTodo({
+      id: 0,
+      title: todoTitle,
+      userId: USER_ID,
+      completed: false,
+    });
+
+    return todoService
+      .addTodo(todoTitle)
+      .then((newTodo) => {
+        setTodos((prevTodos) => [...prevTodos, newTodo]);
+      })
+      .catch((error) => {
+        setErrorMessage('Unable to add a todo');
+        throw error;
+      })
+      .finally(() => {
+        setTempTodo(null);
+      });
+  };
+
+  const handleDeleteTodo = (todoId: number) => {
+    setTodosIdToProcess(prevState => [...prevState, todoId]);
+
+    todoService
+      .deleteTodo(todoId)
+      .then(() => {
+        setTodos(prevTodos => prevTodos.filter(({ id }) => id !== todoId));
+      })
+      .catch(() => {
+        setErrorMessage('Unable to delete a todo');
+      })
+      .finally(() => {
+        setTodosIdToProcess(prevState => prevState.filter(id => id !== todoId));
+      });
+  };
+
+  const handleRenameTodo = (todo: Todo, newTodoTitle: string) => {
+    setTodosIdToProcess(prevState => [...prevState, todo.id]);
+    todoService
+      .updateTodo({
+        id: todo.id,
+        title: newTodoTitle,
+        userId: todo.userId,
+        completed: todo.completed,
+      })
+      .then(updatedTodo => {
+        setTodos(prevTodos => prevTodos.map(currentTodo => (
+          currentTodo.id !== updatedTodo.id
+            ? currentTodo
+            : updatedTodo
+        )));
+      })
+      .catch((error) => {
+        setErrorMessage('Unable to update a todo');
+        throw error;
+      })
+      .finally(() => {
+        setTodosIdToProcess(
+          prevState => prevState.filter(id => id !== todo.id),
+        );
+      });
+  };
+
+  const handleClearCompletedTodos = () => {
+    completedTodos.forEach(todo => (
+      handleDeleteTodo(todo.id)));
+  };
+
+  const handleStatusTodoChange = (todo: Todo) => {
+    setTodosIdToProcess(prevState => [...prevState, todo.id]);
+    todoService
+      .updateTodo({
+        ...todo,
+        completed: !todo.completed,
+      })
+      .then(updatedTodo => {
+        setTodos(prevTodos => prevTodos.map(currentTodo => (
+          currentTodo.id !== updatedTodo.id
+            ? currentTodo
+            : updatedTodo
+        )));
+      })
+      .catch(() => {
+        setErrorMessage('Unable to update a todo');
+      })
+      .finally(() => {
+        setTodosIdToProcess(
+          prevState => prevState.filter(id => id !== todo.id),
+        );
+      });
+  };
+
+  const value = useMemo(() => ({
+    todos,
+    setTodos,
+    completedTodos,
+    uncompletedTodos,
+    errorMessage,
+    setErrorMessage,
+    tempTodo,
+    setTempTodo,
+    todosIdToProcess,
+    setTodosIdToProcess,
+    handleAddTodo,
+    handleDeleteTodo,
+    handleRenameTodo,
+    handleClearCompletedTodos,
+    handleStatusTodoChange,
+  }), [todos, errorMessage, tempTodo, todosIdToProcess]);
+
+  return (
+    <TodoContext.Provider
+      value={value}
+    >
+      {children}
+    </TodoContext.Provider>
+  );
+};
diff --git a/src/api/todos.ts b/src/api/todos.ts
new file mode 100644
index 0000000000..cda61333f8
--- /dev/null
+++ b/src/api/todos.ts
@@ -0,0 +1,29 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+import { USER_ID } from '../utils/constants';
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export const deleteTodo = (todoId: number) => {
+  return client.delete(`/todos/${todoId}`);
+};
+
+export const addTodo = (todoTitle: string) => {
+  return client.post<Todo>('/todos', {
+    title: todoTitle,
+    userId: USER_ID,
+    completed: false,
+  });
+};
+
+export const updateTodo = ({
+  id, title, userId, completed,
+}: Todo): Promise<Todo> => {
+  return client.patch(`/todos/${id}`, {
+    title,
+    userId,
+    completed,
+  });
+};
diff --git a/src/components/ErrorNotification.tsx b/src/components/ErrorNotification.tsx
new file mode 100644
index 0000000000..ecb3855704
--- /dev/null
+++ b/src/components/ErrorNotification.tsx
@@ -0,0 +1,42 @@
+/* eslint-disable jsx-a11y/control-has-associated-label */
+import React, { useContext, useEffect, useRef } from 'react';
+import cn from 'classnames';
+import { TodoContext } from '../Context/TodoContext';
+
+export const ErrorNotification: React.FC = () => {
+  const {
+    errorMessage,
+    setErrorMessage,
+  } = useContext(TodoContext);
+
+  const timerId = useRef(0);
+
+  useEffect(() => {
+    if (timerId.current) {
+      window.clearTimeout(timerId.current);
+    }
+
+    timerId.current = window.setTimeout(() => {
+      setErrorMessage('');
+    }, 3000);
+  }, [errorMessage]);
+
+  return (
+    <div
+      data-cy="ErrorNotification"
+      className={cn(
+        'notification is-danger is-light has-text-weight-normal', {
+          hidden: !errorMessage,
+        },
+      )}
+    >
+      <button
+        data-cy="HideErrorButton"
+        type="button"
+        className="delete"
+        onClick={() => setErrorMessage('')}
+      />
+      {errorMessage}
+    </div>
+  );
+};
diff --git a/src/components/TodoFilter.tsx b/src/components/TodoFilter.tsx
new file mode 100644
index 0000000000..b2657b9f07
--- /dev/null
+++ b/src/components/TodoFilter.tsx
@@ -0,0 +1,87 @@
+import React, { useContext } from 'react';
+import cn from 'classnames';
+import { TodosFilter } from '../types/TodosFilter';
+import { TodoContext } from '../Context/TodoContext';
+
+const setFilterDataCyAndHref = (filter: TodosFilter) => {
+  switch (filter) {
+    case TodosFilter.Active:
+      return {
+        href: '#/active',
+        dataCy: 'FilterLinkActive',
+      };
+
+    case TodosFilter.Completed:
+      return {
+        href: '#/completed',
+        dataCy: 'FilterLinkCompleted',
+      };
+
+    case TodosFilter.All:
+    default:
+      return {
+        href: '#/',
+        dataCy: 'FilterLinkAll',
+      };
+  }
+};
+
+type Props = {
+  filter: TodosFilter;
+  onFilterChange: (filter: TodosFilter) => void;
+};
+
+export const TodoFilter: React.FC<Props> = ({
+  filter,
+  onFilterChange,
+}) => {
+  const {
+    completedTodos,
+    uncompletedTodos,
+
+    handleClearCompletedTodos,
+  } = useContext(TodoContext);
+  const uncompletedTodosAmount = uncompletedTodos.length;
+  const hasCompletedTodos = !!completedTodos.length;
+
+  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(TodosFilter).map((value) => {
+          const filterData = setFilterDataCyAndHref(value);
+
+          return (
+            <a
+              href={filterData.href}
+              className={cn('filter__link', { selected: value === filter })}
+              data-cy={filterData.dataCy}
+              key={value}
+              onClick={() => {
+                onFilterChange(value as TodosFilter);
+              }}
+            >
+              {value}
+            </a>
+          );
+        })}
+      </nav>
+
+      <button
+        type="button"
+        className={cn(
+          'todoapp__clear-completed',
+          { hidden: !hasCompletedTodos },
+        )}
+        data-cy="ClearCompletedButton"
+        onClick={handleClearCompletedTodos}
+        disabled={!hasCompletedTodos}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};
diff --git a/src/components/TodoForm.tsx b/src/components/TodoForm.tsx
new file mode 100644
index 0000000000..d9d0ab0e22
--- /dev/null
+++ b/src/components/TodoForm.tsx
@@ -0,0 +1,98 @@
+import React, {
+  useContext,
+  useEffect,
+  useRef,
+  useState,
+} from 'react';
+import cn from 'classnames';
+import { TodoContext } from '../Context/TodoContext';
+
+export const TodoForm: React.FC = () => {
+  const {
+    todos,
+    completedTodos,
+    uncompletedTodos,
+    handleAddTodo,
+    setErrorMessage,
+    handleStatusTodoChange,
+  } = useContext(TodoContext);
+
+  const isTodosToShow = !!todos.length;
+  const titleField = useRef<HTMLInputElement>(null);
+  const [title, setTitle] = useState('');
+  const [isAdding, setIsAdding] = useState(false);
+
+  const areAllTodoCompleted = todos.length === completedTodos.length;
+
+  const handleTitleChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+    setTitle(event.target.value);
+  };
+
+  const handleToggleAll = () => {
+    if (areAllTodoCompleted) {
+      completedTodos.forEach(todo => handleStatusTodoChange(todo));
+    } else {
+      uncompletedTodos.forEach(todo => handleStatusTodoChange(todo));
+    }
+  };
+
+  const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+
+    const preparedTitle = title.trim();
+
+    if (!preparedTitle) {
+      setErrorMessage('Title should not be empty');
+
+      return;
+    }
+
+    setIsAdding(true);
+
+    handleAddTodo(preparedTitle)
+      .then(() => {
+        setTitle('');
+      })
+      .catch(() => {
+        setErrorMessage('Unable to add todo');
+      })
+      .finally(() => {
+        setIsAdding(false);
+      });
+  };
+
+  useEffect(() => {
+    if (titleField.current) {
+      titleField.current.focus();
+    }
+  });
+
+  return (
+    <header className="todoapp__header">
+      {isTodosToShow && (
+        <button
+          type="button"
+          className={cn('todoapp__toggle-all', { active: areAllTodoCompleted })}
+          data-cy="ToggleAllButton"
+          aria-label="New Todo"
+          onClick={handleToggleAll}
+        />
+      )}
+
+      <form
+        onSubmit={handleSubmit}
+      >
+        <input
+          data-cy="NewTodoField"
+          type="text"
+          className="todoapp__new-todo"
+          placeholder="What needs to be done?"
+          ref={titleField}
+          value={title}
+          onChange={handleTitleChange}
+          disabled={isAdding}
+        />
+      </form>
+    </header>
+  );
+};
diff --git a/src/components/TodoItem.tsx b/src/components/TodoItem.tsx
new file mode 100644
index 0000000000..0ba3d43484
--- /dev/null
+++ b/src/components/TodoItem.tsx
@@ -0,0 +1,133 @@
+import React, {
+  useContext, useEffect, useRef, useState,
+} from 'react';
+import cn from 'classnames';
+import { Todo } from '../types/Todo';
+import { TodoContext } from '../Context/TodoContext';
+
+type Props = {
+  todo: Todo;
+};
+
+export const TodoItem: React.FC<Props> = ({ todo }) => {
+  const {
+    handleRenameTodo,
+    handleDeleteTodo,
+    todosIdToProcess,
+    handleStatusTodoChange,
+  } = useContext(TodoContext);
+
+  const { completed, title, id } = todo;
+  const [isEditing, setIsEditing] = useState(false);
+  const [todoTitle, setTodoTitle] = useState(title);
+  const isProcessing = todosIdToProcess.includes(id) || id === 0;
+
+  const titleInput = useRef<HTMLInputElement | null>(null);
+
+  useEffect(() => {
+    if (isEditing && titleInput.current) {
+      titleInput.current.focus();
+    }
+  }, [isEditing]);
+
+  const handleTodoSave = async (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+
+    const preparedTodoTitle = todoTitle.trim();
+
+    try {
+      if (preparedTodoTitle) {
+        await handleRenameTodo(todo, preparedTodoTitle);
+      } else {
+        await handleDeleteTodo(id);
+      }
+
+      setIsEditing(false);
+    } catch (error) {
+      // eslint-disable-next-line no-console
+      console.log(error);
+    }
+  };
+
+  const handleTodoTitleChange = (
+    event: React.ChangeEvent<HTMLInputElement>,
+  ) => {
+    setTodoTitle(event.target.value);
+  };
+
+  const handleTodoDoubleClick = () => {
+    setIsEditing(true);
+  };
+
+  const handlePressedKey = (event: React.KeyboardEvent<HTMLInputElement>) => {
+    if (event.key === 'Escape') {
+      setIsEditing(false);
+      setTodoTitle(title);
+    }
+  };
+
+  return (
+    <div
+      data-cy="Todo"
+      className={cn('todo', { completed })}
+    >
+      <label className="todo__status-label">
+        <input
+          data-cy="TodoStatus"
+          type="checkbox"
+          className="todo__status"
+          checked={completed}
+          onClick={() => handleStatusTodoChange(todo)}
+        />
+      </label>
+
+      {isEditing
+        ? (
+          <form
+            onSubmit={handleTodoSave}
+            onBlur={handleTodoSave}
+          >
+            <input
+              data-cy="TodoTitleField"
+              type="text"
+              className="todo__title-field"
+              placeholder="Empty todo will be deleted"
+              ref={titleInput}
+              value={todoTitle}
+              onChange={handleTodoTitleChange}
+              onKeyUp={handlePressedKey}
+            />
+          </form>
+        ) : (
+          <>
+            <span
+              data-cy="TodoTitle"
+              className="todo__title"
+              onDoubleClick={handleTodoDoubleClick}
+            >
+              {title}
+            </span>
+
+            <button
+              type="button"
+              className="todo__remove"
+              data-cy="TodoDelete"
+              onClick={() => handleDeleteTodo(id)}
+            >
+              ×
+            </button>
+          </>
+        )}
+
+      <div
+        data-cy="TodoLoader"
+        className={cn('modal overlay', {
+          'is-active': isProcessing,
+        })}
+      >
+        <div className="modal-background has-background-white-ter" />
+        <div className="loader" />
+      </div>
+    </div>
+  );
+};
diff --git a/src/components/TodoList.tsx b/src/components/TodoList.tsx
new file mode 100644
index 0000000000..bbd696f2fd
--- /dev/null
+++ b/src/components/TodoList.tsx
@@ -0,0 +1,31 @@
+import React, { useContext } from 'react';
+import { Todo } from '../types/Todo';
+import { TodoItem } from './TodoItem';
+import { TodoContext } from '../Context/TodoContext';
+
+type Props = {
+  todos: Todo[];
+};
+
+export const TodoList: React.FC<Props> = ({
+  todos,
+}) => {
+  const { tempTodo } = useContext(TodoContext);
+
+  return (
+    <section className="todoapp__main" data-cy="TodoList">
+      {todos.map(todo => (
+        <TodoItem
+          todo={todo}
+          key={todo.id}
+        />
+      ))}
+
+      {tempTodo && (
+        <TodoItem
+          todo={tempTodo}
+        />
+      )}
+    </section>
+  );
+};
diff --git a/src/index.tsx b/src/index.tsx
index 7de19e0c70..d3ca54266f 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -5,6 +5,11 @@ import '@fortawesome/fontawesome-free/css/all.css';
 import './styles/index.scss';
 
 import { App } from './App';
+import { TodoProvider } from './Context/TodoContext';
 
 createRoot(document.getElementById('root') as HTMLDivElement)
-  .render(<App />);
+  .render(
+    <TodoProvider>
+      <App />
+    </TodoProvider>,
+  );
diff --git a/src/styles/index.scss b/src/styles/index.scss
index bccd80c8bc..5a6d933c84 100644
--- a/src/styles/index.scss
+++ b/src/styles/index.scss
@@ -14,7 +14,7 @@ body {
   min-height: 36px;
 }
 
-.notification.hidden {
+.hidden {
   min-height: 0;
   opacity: 0;
   pointer-events: none;
diff --git a/src/types/Todo.ts b/src/types/Todo.ts
new file mode 100644
index 0000000000..3f52a5fdde
--- /dev/null
+++ b/src/types/Todo.ts
@@ -0,0 +1,6 @@
+export interface Todo {
+  id: number;
+  userId: number;
+  title: string;
+  completed: boolean;
+}
diff --git a/src/types/TodosFilter.ts b/src/types/TodosFilter.ts
new file mode 100644
index 0000000000..5b2422df9e
--- /dev/null
+++ b/src/types/TodosFilter.ts
@@ -0,0 +1,5 @@
+export enum TodosFilter {
+  All = 'All',
+  Active = 'Active',
+  Completed = 'Completed',
+}
diff --git a/src/utils/constants.ts b/src/utils/constants.ts
new file mode 100644
index 0000000000..628918d43b
--- /dev/null
+++ b/src/utils/constants.ts
@@ -0,0 +1 @@
+export const USER_ID = 11513;
diff --git a/src/utils/countTodos.ts b/src/utils/countTodos.ts
new file mode 100644
index 0000000000..2c9c2fbefa
--- /dev/null
+++ b/src/utils/countTodos.ts
@@ -0,0 +1,9 @@
+import { Todo } from '../types/Todo';
+
+export const getUncompletedTodos = (todos: Todo[]) => {
+  return todos.filter(({ completed }) => !completed);
+};
+
+export const getCompletedTodos = (todos: Todo[]) => {
+  return todos.filter(({ completed }) => completed);
+};
diff --git a/src/utils/fetchClient.ts b/src/utils/fetchClient.ts
new file mode 100644
index 0000000000..ca588ab63a
--- /dev/null
+++ b/src/utils/fetchClient.ts
@@ -0,0 +1,46 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+const BASE_URL = 'https://mate.academy/students-api';
+
+// returns a promise resolved after a given delay
+function wait(delay: number) {
+  return new Promise(resolve => {
+    setTimeout(resolve, delay);
+  });
+}
+
+// To have autocompletion and avoid mistypes
+type RequestMethod = 'GET' | 'POST' | 'PATCH' | 'DELETE';
+
+function request<T>(
+  url: string,
+  method: RequestMethod = 'GET',
+  data: any = null, // we can send any data to the server
+): Promise<T> {
+  const options: RequestInit = { method };
+
+  if (data) {
+    // We add body and Content-Type only for the requests with data
+    options.body = JSON.stringify(data);
+    options.headers = {
+      'Content-Type': 'application/json; charset=UTF-8',
+    };
+  }
+
+  // we wait for testing purpose to see loaders
+  return wait(100)
+    .then(() => fetch(BASE_URL + url, options))
+    .then(response => {
+      if (!response.ok) {
+        throw new Error();
+      }
+
+      return response.json();
+    });
+}
+
+export const client = {
+  get: <T>(url: string) => request<T>(url),
+  post: <T>(url: string, data: any) => request<T>(url, 'POST', data),
+  patch: <T>(url: string, data: any) => request<T>(url, 'PATCH', data),
+  delete: (url: string) => request(url, 'DELETE'),
+};
diff --git a/src/utils/getFilteredTodos.ts b/src/utils/getFilteredTodos.ts
new file mode 100644
index 0000000000..14630e31a9
--- /dev/null
+++ b/src/utils/getFilteredTodos.ts
@@ -0,0 +1,15 @@
+import { Todo } from '../types/Todo';
+import { TodosFilter } from '../types/TodosFilter';
+
+export const getFilteredTodos = (todos: Todo[], filter: TodosFilter) => {
+  switch (filter) {
+    case TodosFilter.Active:
+      return todos.filter(({ completed }) => !completed);
+
+    case TodosFilter.Completed:
+      return todos.filter(({ completed }) => completed);
+
+    default:
+      return todos;
+  }
+};