diff --git a/package-lock.json b/package-lock.json
index 19701e878..511279ae7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
       },
       "devDependencies": {
         "@cypress/react18": "^2.0.1",
-        "@mate-academy/scripts": "^1.8.5",
+        "@mate-academy/scripts": "^1.9.12",
         "@mate-academy/students-ts-config": "*",
         "@mate-academy/stylelint-config": "*",
         "@types/node": "^20.14.10",
@@ -1183,10 +1183,11 @@
       }
     },
     "node_modules/@mate-academy/scripts": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.8.5.tgz",
-      "integrity": "sha512-mHRY2FkuoYCf5U0ahIukkaRo5LSZsxrTSgMJheFoyf3VXsTvfM9OfWcZIDIDB521kdPrScHHnRp+JRNjCfUO5A==",
+      "version": "1.9.12",
+      "resolved": "https://registry.npmjs.org/@mate-academy/scripts/-/scripts-1.9.12.tgz",
+      "integrity": "sha512-/OcmxMa34lYLFlGx7Ig926W1U1qjrnXbjFJ2TzUcDaLmED+A5se652NcWwGOidXRuMAOYLPU2jNYBEkKyXrFJA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "@octokit/rest": "^17.11.2",
         "@types/get-port": "^4.2.0",
diff --git a/package.json b/package.json
index b6062525a..005692edf 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "@cypress/react18": "^2.0.1",
-    "@mate-academy/scripts": "^1.8.5",
+    "@mate-academy/scripts": "^1.9.12",
     "@mate-academy/students-ts-config": "*",
     "@mate-academy/stylelint-config": "*",
     "@types/node": "^20.14.10",
diff --git a/src/App.tsx b/src/App.tsx
index 81e011f43..cd5dd9e61 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,26 +1,307 @@
-/* eslint-disable max-len */
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useState, useEffect, useRef } from 'react';
 import { UserWarning } from './UserWarning';
-
-const USER_ID = 0;
+import { USER_ID, getTodos, deleteTodo, createTodo } from './api/todos';
+import { Todo } from './types/Todo';
+import { Header } from './components/Header';
+import { TodoList } from './components/TodoList';
+import { ErrorItem } from './components/ErrorItem';
+import { FooterItem } from './components/Footer';
+import { updateTodo } from './api/todos';
 
 export const App: React.FC = () => {
+  const [todos, setTodos] = useState<Todo[]>([]);
+  const [newTodoTitle, setNewTodoTitle] = useState('');
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+  const [filter, setFilter] = useState('all');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const inputRef = useRef<HTMLInputElement>(null);
+  const [tempTodo, setTempTodo] = useState<Todo | null>(null);
+  const [deletingTodoId, setDeletingTodoId] = useState<number | null>(null);
+  const [isEditing, setIsEditing] = useState(false);
+  const [editingTodoId, setEditingTodoId] = useState<number | null>(null);
+  const [editingTitle, setEditingTitle] = useState('');
+  const [isDeleting, setIsDeleting] = useState(false);
+  const [loadingIds, setLoadingIds] = useState<number[]>([]);
+
+  useEffect(() => {
+    if (inputRef.current && !isSubmitting) {
+      inputRef.current.focus();
+    }
+  }, [todos, isSubmitting]);
+
+  useEffect(() => {
+    if (errorMessage) {
+      const timer = setTimeout(() => {
+        setErrorMessage(null);
+      }, 3000);
+
+      return () => clearTimeout(timer);
+    }
+
+    return undefined;
+  }, [errorMessage]);
+
+  useEffect(() => {
+    setErrorMessage(null);
+    getTodos()
+      .then(setTodos)
+      .catch(() => setErrorMessage('Unable to load todos'));
+  }, []);
+
+  const hasAllTodosCompleted = todos.every(todo => todo.completed);
+  const notCompletedTodos = todos.filter(todo => !todo.completed);
+  const completedTodos = todos.filter(todo => todo.completed);
+
   if (!USER_ID) {
     return <UserWarning />;
   }
 
+  const onUpdate = (id: number, updatedStatus: Partial<Todo>) => {
+    return updateTodo({ id, ...updatedStatus })
+      .then(updatedTodo => {
+        setTodos(currentTodos =>
+          currentTodos.map(todo => (todo.id === id ? updatedTodo : todo)),
+        );
+      })
+      .catch(() => {
+        setErrorMessage('Unable to update a todo');
+      });
+  };
+
+  const handleToggleAll = () => {
+    const haveActive = todos.some(todo => !todo.completed);
+    const todosToUpdate = haveActive
+      ? todos.filter(todo => !todo.completed)
+      : todos;
+
+    setLoadingIds([...loadingIds, ...todosToUpdate.map(todo => todo.id)]);
+
+    Promise.all(
+      todosToUpdate.map(todo => onUpdate(todo.id, { completed: haveActive })),
+    ).finally(() => {
+      setLoadingIds(prevLoadingIds =>
+        prevLoadingIds.filter(
+          id => !todosToUpdate.some(todo => todo.id === id),
+        ),
+      );
+    });
+  };
+
+  const handleToggleTodo = (todo: Todo) => {
+    setLoadingIds([...loadingIds, todo.id]);
+
+    onUpdate(todo.id, { completed: !todo.completed }).finally(() => {
+      setLoadingIds(loadingIds.filter(id => id !== todo.id));
+    });
+  };
+
+  const handleDeleteTodo = (todoId: number) => {
+    setLoadingIds([...loadingIds, todoId]);
+
+    deleteTodo(todoId)
+      .then(() => {
+        setTodos(currentTodos =>
+          currentTodos.filter(todo => todo.id !== todoId),
+        );
+      })
+      .catch(() => {
+        setErrorMessage('Unable to delete a todo');
+      })
+      .finally(() => {
+        setDeletingTodoId(null);
+        setLoadingIds(loadingIds.filter(id => todoId !== id));
+      });
+  };
+
+  const handleClearCompleted = () => {
+    const deletePromises = completedTodos.map(todo =>
+      handleDeleteTodo(todo.id),
+    );
+
+    Promise.all(deletePromises).catch(() => {
+      setErrorMessage('Unable to delete one or more todos');
+    });
+  };
+
+  const handleAddTodo = (event: React.FormEvent) => {
+    event.preventDefault();
+    const trimmedTitle = newTodoTitle.trim();
+
+    if (!newTodoTitle.trim()) {
+      setErrorMessage('Title should not be empty');
+
+      return;
+    }
+
+    const tempTodoItem: Todo = {
+      id: 0,
+      title: newTodoTitle,
+      completed: false,
+      userId: USER_ID,
+    };
+
+    setTempTodo(tempTodoItem);
+    setIsSubmitting(true);
+
+    createTodo({
+      title: trimmedTitle,
+      userId: USER_ID,
+      completed: false,
+    })
+      .then(newTodo => {
+        setTodos(currentTodos => [...currentTodos, newTodo]);
+        setNewTodoTitle('');
+      })
+      .catch(() => setErrorMessage('Unable to add a todo'))
+      .finally(() => {
+        setIsSubmitting(false);
+        setTempTodo(null);
+      });
+  };
+
+  const onDoubleClickHandler = (todo: Todo) => {
+    setEditingTodoId(todo.id);
+    setEditingTitle(todo.title);
+    setIsEditing(true);
+  };
+
+  const handleBlur = (id: number) => {
+    const updatedTitle = editingTitle.trim();
+
+    if (!updatedTitle) {
+      deleteTodo(id)
+        .then(() => {
+          setTodos(currentTodos => currentTodos.filter(todo => todo.id !== id));
+          setEditingTodoId(null);
+          setEditingTitle('');
+          setIsEditing(false);
+        })
+        .catch(() => {
+          setErrorMessage('Unable to delete a todo');
+        });
+
+      return;
+    }
+
+    updateTodo({ id, title: updatedTitle })
+      .then(updatedTodo => {
+        setTodos(currentTodos =>
+          currentTodos.map(todo => (todo.id === id ? updatedTodo : todo)),
+        );
+        setEditingTodoId(null);
+        setEditingTitle('');
+        setIsEditing(false);
+      })
+      .catch(() => {
+        setErrorMessage('Unable to update title');
+      });
+  };
+
+  const handleUpdateTodo = (id: number, event: React.FormEvent) => {
+    event.preventDefault();
+
+    const updatedTitle = editingTitle.trim();
+
+    if (todos.find(todo => todo.id === id)?.title === updatedTitle) {
+      setEditingTodoId(null);
+      setIsEditing(false);
+      setEditingTitle('');
+
+      return;
+    }
+
+    if (!updatedTitle) {
+      setIsSubmitting(true);
+
+      deleteTodo(id)
+        .then(() => {
+          setTodos(currentTodos => currentTodos.filter(todo => todo.id !== id));
+        })
+        .catch(() => {
+          setErrorMessage('Unable to delete a todo');
+        })
+        .finally(() => {
+          setEditingTodoId(null);
+          setIsEditing(false);
+          setEditingTitle('');
+          setIsSubmitting(false);
+        });
+
+      return;
+    }
+
+    setLoadingIds(prevLoadingIds => [...prevLoadingIds, id]);
+
+    updateTodo({ id, title: updatedTitle })
+      .then(updatedTodo => {
+        setTodos(currentTodos =>
+          currentTodos.map(todo => (todo.id === id ? updatedTodo : todo)),
+        );
+        setEditingTodoId(null);
+        setEditingTitle('');
+        setIsEditing(false);
+      })
+      .catch(() => {
+        setErrorMessage('Unable to update a todo');
+      })
+      .finally(() => {
+        setLoadingIds(prevLoadingIds =>
+          prevLoadingIds.filter(loadingId => loadingId !== id),
+        );
+      });
+  };
+
   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
+          hasAllTodosCompleted={hasAllTodosCompleted}
+          handleAddTodo={handleAddTodo}
+          newTodoTitle={newTodoTitle}
+          setNewTodoTitle={setNewTodoTitle}
+          inputRef={inputRef}
+          isSubmitting={isSubmitting}
+          handleToggleAll={handleToggleAll}
+          todos={todos}
+        />
+
+        <TodoList
+          todos={todos}
+          filter={filter}
+          isSubmitting={isSubmitting}
+          deletingTodoId={deletingTodoId}
+          tempTodo={tempTodo}
+          onDelete={handleDeleteTodo}
+          onDoubleClickHandler={onDoubleClickHandler}
+          editingTodoId={editingTodoId}
+          editingTitle={editingTitle}
+          handleToggleTodo={handleToggleTodo}
+          handleBlur={handleBlur}
+          isEditing={isEditing}
+          setEditingTodoId={setEditingTodoId}
+          setEditingTitle={setEditingTitle}
+          handleUpdateTodo={handleUpdateTodo}
+          setIsDeleting={setIsDeleting}
+          isDeleting={isDeleting}
+          loadingIds={loadingIds}
+        />
+
+        {todos.length > 0 && (
+          <FooterItem
+            notCompletedTodos={notCompletedTodos}
+            setFilter={setFilter}
+            filter={filter}
+            handleClearCompleted={handleClearCompleted}
+            completedTodos={completedTodos}
+            handleToggleTodo={handleToggleTodo}
+          />
+        )}
+      </div>
+      <ErrorItem
+        errorMessage={errorMessage}
+        setErrorMessage={setErrorMessage}
+      />
+    </div>
   );
 };
diff --git a/src/api/todos.ts b/src/api/todos.ts
new file mode 100644
index 000000000..b01904826
--- /dev/null
+++ b/src/api/todos.ts
@@ -0,0 +1,20 @@
+import { Todo } from '../types/Todo';
+import { client } from '../utils/fetchClient';
+
+export const USER_ID = 1350;
+
+export const getTodos = () => {
+  return client.get<Todo[]>(`/todos?userId=${USER_ID}`);
+};
+
+export function deleteTodo(todoId: number) {
+  return client.delete(`/todos/${todoId}`);
+}
+
+export function createTodo({ title, userId, completed }: Omit<Todo, 'id'>) {
+  return client.todo<Todo>('/todos', { title, userId, completed });
+}
+
+export function updateTodo({ id, title, userId, completed }: Todo) {
+  return client.patch<Todo>(`/todos/${id}`, { title, userId, completed });
+}
diff --git a/src/components/ErrorItem.tsx b/src/components/ErrorItem.tsx
new file mode 100644
index 000000000..20cb6fe9e
--- /dev/null
+++ b/src/components/ErrorItem.tsx
@@ -0,0 +1,32 @@
+import React from 'react';
+import classNames from 'classnames';
+
+interface ErrorItemProps {
+  errorMessage: string | null;
+  setErrorMessage: React.Dispatch<React.SetStateAction<string | null>>;
+}
+
+export const ErrorItem: React.FC<ErrorItemProps> = ({
+  errorMessage,
+  setErrorMessage,
+}) => {
+  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={() => setErrorMessage(null)}
+      />
+      {errorMessage}
+    </div>
+  );
+};
diff --git a/src/components/Footer.tsx b/src/components/Footer.tsx
new file mode 100644
index 000000000..86611495b
--- /dev/null
+++ b/src/components/Footer.tsx
@@ -0,0 +1,52 @@
+import React from 'react';
+import classNames from 'classnames';
+import { FilterOptions } from '../types/FilterOptions';
+
+interface FooterItemProps {
+  notCompletedTodos: { length: number };
+  setFilter: (filter: FilterOptions) => void;
+  filter: string;
+  handleClearCompleted: () => void;
+  completedTodos: { length: number };
+}
+
+export const FooterItem: React.FC<FooterItemProps> = ({
+  notCompletedTodos,
+  setFilter,
+  filter,
+  handleClearCompleted,
+  completedTodos,
+}) => {
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {notCompletedTodos.length} items left
+      </span>
+      <nav className="filter" data-cy="Filter">
+        {Object.values(FilterOptions).map(option => (
+          <a
+            key={option}
+            href={`#/${option}`}
+            className={classNames('filter__link', {
+              selected: filter === option,
+            })}
+            data-cy={`FilterLink${option.charAt(0).toUpperCase() + option.slice(1)}`}
+            onClick={() => setFilter(option)}
+          >
+            {option.charAt(0).toUpperCase() + option.slice(1)}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={!completedTodos.length}
+        onClick={handleClearCompleted}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};
diff --git a/src/components/Header.tsx b/src/components/Header.tsx
new file mode 100644
index 000000000..aa8b28b24
--- /dev/null
+++ b/src/components/Header.tsx
@@ -0,0 +1,53 @@
+import React from 'react';
+import classNames from 'classnames';
+import { Todo } from '../types/Todo';
+
+type Props = {
+  hasAllTodosCompleted: boolean;
+  handleAddTodo: (event: React.FormEvent) => void;
+  newTodoTitle: string;
+  setNewTodoTitle: (title: string) => void;
+  inputRef: React.RefObject<HTMLInputElement>;
+  isSubmitting: boolean;
+  handleToggleAll: () => void;
+  todos: Todo[];
+};
+
+export const Header: React.FC<Props> = ({
+  hasAllTodosCompleted,
+  handleAddTodo,
+  newTodoTitle,
+  setNewTodoTitle,
+  inputRef,
+  isSubmitting,
+  handleToggleAll,
+  todos,
+}) => {
+  return (
+    <header className="todoapp__header">
+      {todos.length > 0 && (
+        <button
+          type="button"
+          className={classNames('todoapp__toggle-all', {
+            active: hasAllTodosCompleted,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={handleToggleAll}
+        />
+      )}
+
+      <form onSubmit={handleAddTodo}>
+        <input
+          data-cy="NewTodoField"
+          type="text"
+          className="todoapp__new-todo"
+          placeholder="What needs to be done?"
+          value={newTodoTitle}
+          onChange={event => setNewTodoTitle(event.target.value)}
+          ref={inputRef}
+          disabled={isSubmitting}
+        />
+      </form>
+    </header>
+  );
+};
diff --git a/src/components/TodoItem.tsx b/src/components/TodoItem.tsx
new file mode 100644
index 000000000..731048bc9
--- /dev/null
+++ b/src/components/TodoItem.tsx
@@ -0,0 +1,122 @@
+/* eslint-disable jsx-a11y/label-has-associated-control */
+/* eslint-disable jsx-a11y/control-has-associated-label */
+import React, { useRef, useEffect } from 'react';
+import classNames from 'classnames';
+import { Todo } from '../types/Todo';
+
+interface TodoItemProps {
+  todo: Todo;
+  onDelete: (todoId: number) => void;
+  isSubmitting: boolean;
+  deletingTodoId: number | null;
+  tempTodo: Todo | null;
+  onDoubleClickHandler: (todo: Todo) => void;
+  setEditingTitle: (title: string) => void;
+  editingTodoId: number | null;
+  isEditing: boolean;
+  handleToggleTodo: (todo: Todo) => void;
+  editingTitle: string;
+  handleUpdateTodo: () => void;
+  handleBlur: () => void;
+  isTogglingAll: boolean;
+  isDeleting: boolean;
+  isTogglingTodo: boolean;
+  loadingIds: number[];
+  setEditingTodoId: number;
+}
+
+export const TodoItem: React.FC<TodoItemProps> = ({
+  todo,
+  onDelete,
+  isSubmitting,
+  tempTodo,
+  onDoubleClickHandler,
+  setEditingTitle,
+  editingTitle,
+  isEditing,
+  editingTodoId,
+  handleToggleTodo,
+  handleUpdateTodo,
+  handleBlur,
+  loadingIds,
+  setEditingTodoId,
+}) => {
+  const { id, title, completed } = todo;
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  useEffect(() => {
+    if (inputRef.current && editingTodoId === id) {
+      inputRef.current.focus();
+    }
+  }, [editingTodoId, id]);
+
+  const handleKeyDown = (event: React.KeyboardEvent<HTMLInputElement>) => {
+    if (event.key === 'Enter') {
+      handleUpdateTodo(todo.id, event);
+    } else if (event.key === 'Escape') {
+      setEditingTitle(title);
+      setEditingTodoId(null);
+      inputRef.current?.blur();
+    }
+  };
+
+  return (
+    <div data-cy="Todo" className={classNames('todo', { completed })}>
+      <label className="todo__status-label">
+        <input
+          data-cy="TodoStatus"
+          type="checkbox"
+          className="todo__status"
+          checked={completed}
+          onChange={() => handleToggleTodo(id)}
+        />
+      </label>
+
+      {isEditing && editingTodoId === todo.id ? (
+        <form onSubmit={event => handleUpdateTodo(todo.id, event)}>
+          <input
+            ref={inputRef}
+            data-cy="TodoTitleField"
+            type="text"
+            className="todo__title-field"
+            placeholder="Empty todo will be deleted"
+            value={editingTitle}
+            onChange={event => setEditingTitle(event.target.value)}
+            onBlur={handleBlur}
+            onKeyDown={handleKeyDown}
+          />
+        </form>
+      ) : (
+        <span
+          data-cy="TodoTitle"
+          className="todo__title"
+          onDoubleClick={() => onDoubleClickHandler(todo)}
+        >
+          {title}
+        </span>
+      )}
+
+      {editingTodoId !== id && (
+        <button
+          type="button"
+          className="todo__remove"
+          data-cy="TodoDelete"
+          onClick={() => onDelete(id)}
+        >
+          ×
+        </button>
+      )}
+
+      <div
+        data-cy="TodoLoader"
+        className={classNames('modal overlay', {
+          'is-active':
+            (isSubmitting && !tempTodo) || loadingIds.includes(todo.id),
+        })}
+      >
+        <div className="loader" />
+        <div className="modal-background has-background-white-ter" />
+      </div>
+    </div>
+  );
+};
diff --git a/src/components/TodoList.tsx b/src/components/TodoList.tsx
new file mode 100644
index 000000000..a154dd444
--- /dev/null
+++ b/src/components/TodoList.tsx
@@ -0,0 +1,116 @@
+/* eslint-disable jsx-a11y/label-has-associated-control */
+/* eslint-disable jsx-a11y/control-has-associated-label */
+import React, { useMemo } from 'react';
+import { Todo } from '../types/Todo';
+import { TodoItem } from './TodoItem';
+import { FilterOptions } from '../types/FilterOptions';
+
+interface TodoListProps {
+  todos: Todo[];
+  filter: FilterOptions;
+  isSubmitting: boolean;
+  deletingTodoId: number | null;
+  tempTodo: Todo | null;
+  onDelete: (todoId: number) => void;
+  handleToggleTodo: (todo: Todo) => void;
+  onDoubleClickHandler: (todo: Todo) => void;
+  handleBlur: (todoId: number) => void;
+  editingTitle: string;
+  isEditing: boolean;
+  setEditingTitle: (title: string) => void;
+  handleUpdateTodo: (todoId: number, event: React.FormEvent) => void; // ожидаем, что handleUpdateTodo принимает id и event
+  editingTodoId: number | null;
+  isDeleting: boolean;
+  isTogglingTodo: boolean;
+  loadingIds: number[];
+  setEditingTodoId: (id: number | null) => void; // ожидаем функцию, которая обновляет editingTodoId
+}
+
+export const TodoList: React.FC<TodoListProps> = ({
+  todos,
+  filter,
+  isSubmitting,
+  deletingTodoId,
+  tempTodo,
+  onDelete,
+  onDoubleClickHandler,
+  handleToggleTodo,
+  handleBlur,
+  editingTitle,
+  isEditing,
+  setEditingTitle,
+  handleUpdateTodo,
+  editingTodoId,
+  loadingIds,
+  setEditingTodoId,
+}) => {
+  const filteredTodos = useMemo(() => {
+    return todos.filter(todo => {
+      if (filter === FilterOptions.Active) {
+        return !todo.completed;
+      }
+
+      if (filter === FilterOptions.Completed) {
+        return todo.completed;
+      }
+
+      return true;
+    });
+  }, [todos, filter]);
+
+  return (
+    <section className="todoapp__main" data-cy="TodoList">
+      {filteredTodos.map(todo => (
+        <TodoItem
+          key={todo.id}
+          todo={todo}
+          onDelete={onDelete}
+          isSubmitting={isSubmitting}
+          deletingTodoId={deletingTodoId}
+          tempTodo={tempTodo}
+          onDoubleClickHandler={onDoubleClickHandler}
+          handleToggleTodo={() => handleToggleTodo(todo)}
+          handleBlur={() => handleBlur(todo.id)}
+          editingTitle={editingTitle}
+          isEditing={isEditing}
+          setEditingTitle={setEditingTitle}
+          handleUpdateTodo={handleUpdateTodo}
+          editingTodoId={editingTodoId}
+          loadingIds={loadingIds}
+          setEditingTodoId={setEditingTodoId}
+        />
+      ))}
+
+      {tempTodo && (
+        <div data-cy="Todo" className="todo">
+          <label className="todo__status-label">
+            <input
+              data-cy="TodoStatus"
+              type="checkbox"
+              className="todo__status"
+              checked={tempTodo.completed}
+              disabled
+            />
+          </label>
+
+          <span data-cy="TodoTitle" className="todo__title">
+            {tempTodo.title}
+          </span>
+          <button
+            type="button"
+            className="todo__remove"
+            data-cy="TodoDelete"
+            disabled
+          >
+            ×
+          </button>
+
+          <div data-cy="TodoLoader" className="modal overlay is-active">
+            <div className="loader" />
+            <div className="modal-background has-background-white-ter" />
+          </div>
+        </div>
+      )}
+    </section>
+  );
+};
diff --git a/src/types/FilterOptions.tsx b/src/types/FilterOptions.tsx
new file mode 100644
index 000000000..cf7553611
--- /dev/null
+++ b/src/types/FilterOptions.tsx
@@ -0,0 +1,5 @@
+export enum FilterOptions {
+  All = 'all',
+  Active = 'active',
+  Completed = 'completed',
+}
diff --git a/src/types/Todo.ts b/src/types/Todo.ts
new file mode 100644
index 000000000..3f52a5fdd
--- /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/utils/fetchClient.ts b/src/utils/fetchClient.ts
new file mode 100644
index 000000000..a215834bb
--- /dev/null
+++ b/src/utils/fetchClient.ts
@@ -0,0 +1,45 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+const BASE_URL = 'https://mate.academy/students-api';
+
+function wait(delay: number) {
+  return new Promise(resolve => {
+    setTimeout(resolve, delay);
+  });
+}
+
+type RequestMethod = 'GET' | 'POST' | 'PATCH' | 'DELETE';
+
+function request<T>(
+  url: string,
+  method: RequestMethod = 'GET',
+  data: any = null,
+): Promise<T> {
+  const options: RequestInit = { method };
+
+  if (data) {
+    options.body = JSON.stringify(data);
+    options.headers = {
+      'Content-Type': 'application/json; charset=UTF-8',
+    };
+  }
+
+  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),
+
+  todo: <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'),
+};