add task solution

src/App.tsx

@@ -1,156 +1,20 @@
-/* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import React, { useContext } from 'react';
+import { TodoList } from './components/TodoList';
+import { TodoHeader } from './components/TodoHeader';
+import { TodoFooter } from './components/TodoFooter';
+import { TodosContext } from './context';
 
 export const App: React.FC = () => {
+  const { todos } = useContext(TodosContext);
+
   return (
     <div className="todoapp">
       <h1 className="todoapp__title">todos</h1>
 
       <div className="todoapp__content">
-        <header className="todoapp__header">
-          {/* this button should have `active` class only if all todos are completed */}
-          <button
-            type="button"
-            className="todoapp__toggle-all active"
-            data-cy="ToggleAllButton"
-          />
-
-          {/* Add a todo on form submit */}
-          <form>
-            <input
-              data-cy="NewTodoField"
-              type="text"
-              className="todoapp__new-todo"
-              placeholder="What needs to be done?"
-            />
-          </form>
-        </header>
-
-        <section className="todoapp__main" data-cy="TodoList">
-          {/* This is a completed todo */}
-          <div data-cy="Todo" className="todo completed">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-                checked
-              />
-            </label>
-
-            <span data-cy="TodoTitle" className="todo__title">
-              Completed Todo
-            </span>
-
-            {/* Remove button appears only on hover */}
-            <button type="button" className="todo__remove" data-cy="TodoDelete">
-              ×
-            </button>
-          </div>
-
-          {/* This todo is an active todo */}
-          <div data-cy="Todo" className="todo">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-              />
-            </label>
-
-            <span data-cy="TodoTitle" className="todo__title">
-              Not Completed Todo
-            </span>
-
-            <button type="button" className="todo__remove" data-cy="TodoDelete">
-              ×
-            </button>
-          </div>
-
-          {/* This todo is being edited */}
-          <div data-cy="Todo" className="todo">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-              />
-            </label>
-
-            {/* This form is shown instead of the title and remove button */}
-            <form>
-              <input
-                data-cy="TodoTitleField"
-                type="text"
-                className="todo__title-field"
-                placeholder="Empty todo will be deleted"
-                value="Todo is being edited now"
-              />
-            </form>
-          </div>
-
-          {/* This todo is in loadind state */}
-          <div data-cy="Todo" className="todo">
-            <label className="todo__status-label">
-              <input
-                data-cy="TodoStatus"
-                type="checkbox"
-                className="todo__status"
-              />
-            </label>
-
-            <span data-cy="TodoTitle" className="todo__title">
-              Todo is being saved now
-            </span>
-
-            <button type="button" className="todo__remove" data-cy="TodoDelete">
-              ×
-            </button>
-          </div>
-        </section>
-
-        {/* Hide the footer if there are no todos */}
-        <footer className="todoapp__footer" data-cy="Footer">
-          <span className="todo-count" data-cy="TodosCounter">
-            3 items left
-          </span>
-
-          {/* Active link should have the 'selected' class */}
-          <nav className="filter" data-cy="Filter">
-            <a
-              href="#/"
-              className="filter__link selected"
-              data-cy="FilterLinkAll"
-            >
-              All
-            </a>
-
-            <a
-              href="#/active"
-              className="filter__link"
-              data-cy="FilterLinkActive"
-            >
-              Active
-            </a>
-
-            <a
-              href="#/completed"
-              className="filter__link"
-              data-cy="FilterLinkCompleted"
-            >
-              Completed
-            </a>
-          </nav>
-
-          {/* this button should be disabled if there are no completed todos */}
-          <button
-            type="button"
-            className="todoapp__clear-completed"
-            data-cy="ClearCompletedButton"
-          >
-            Clear completed
-          </button>
-        </footer>
+        <TodoHeader />
+        <TodoList />
+        {todos.length > 0 && <TodoFooter />}
       </div>
     </div>
   );

src/components/TodoFooter/TodoFooter.tsx

@@ -0,0 +1,57 @@
+import React, { useContext } from 'react';
+import { TodosContext } from '../../context';
+import { Filter } from '../../enums/Enums';
+import classNames from 'classnames';
+
+export const TodoFooter: React.FC = () => {
+  const { todos, activeTodos, filter, setFilter, deleteHandler } =
+    useContext(TodosContext);
+
+  const deleteCompleted = () => {
+    const idsToDelete: number[] = [];
+
+    todos.forEach(todo => {
+      const { completed, id } = todo;
+
+      if (completed) {
+        idsToDelete.push(id);
+      }
+    });
+
+    deleteHandler(idsToDelete);
+  };
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {activeTodos} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Filter).map((value, i) => (
+          <a
+            href="#/"
+            key={value + i}
+            className={classNames('filter__link', {
+              selected: filter === value,
+            })}
+            data-cy={`FilterLink${value}`}
+            onClick={() => setFilter(value)}
+          >
+            {value}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={activeTodos === todos.length}
+        onClick={deleteCompleted}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/TodoFooter/index.ts

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

src/components/TodoHeader/TodoHeader.tsx

@@ -0,0 +1,59 @@
+import React, { useContext } from 'react';
+import { TodosContext } from '../../context';
+import classNames from 'classnames';
+import { myLocalStorage } from '../../localStorage';
+import { Names } from '../../enums/Enums';
+
+export const TodoHeader: React.FC = () => {
+  const {
+    todos,
+    activeTodos,
+    value,
+    headerInputRef,
+    setTodos,
+    setValue,
+    onSubmit,
+  } = useContext(TodosContext);
+
+  const toogleAll = () => {
+    const updatedTodos = todos.map(todo => {
+      const { completed } = todo;
+
+      if (activeTodos === 0 && completed) {
+        return { ...todo, completed: !completed };
+      }
+
+      return { ...todo, completed: true };
+    });
+
+    setTodos(updatedTodos);
+    myLocalStorage.setItem(Names.todos, JSON.stringify(updatedTodos));
+  };
+
+  return (
+    <header className="todoapp__header">
+      {todos.length > 0 && (
+        <button
+          type="button"
+          className={classNames('todoapp__toggle-all', {
+            active: activeTodos === 0 && activeTodos !== todos.length,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={toogleAll}
+        />
+      )}
+
+      <form onSubmit={onSubmit}>
+        <input
+          ref={headerInputRef}
+          data-cy="NewTodoField"
+          type="text"
+          className="todoapp__new-todo"
+          placeholder="What needs to be done?"
+          value={value}
+          onChange={event => setValue(event.target.value)}
+        />
+      </form>
+    </header>
+  );
+};

src/components/TodoHeader/index.ts

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

src/components/TodoItem/TodoItem.tsx

@@ -0,0 +1,86 @@
+/* eslint-disable jsx-a11y/label-has-associated-control */
+import classNames from 'classnames';
+import React from 'react';
+
+interface Props {
+  id: number;
+  title: string;
+  editableTitle: string;
+  isTodoChecked: boolean;
+  editableTodoById: number;
+  todoInputRef: React.MutableRefObject<HTMLInputElement | null>;
+  setEditableTitle: (value: string) => void;
+  editHandler: (id: number, title: string) => void;
+  deleteHandler: (ids: number[]) => void;
+  toogleHandler: (id: number) => void;
+  onSubmit: (event: React.FormEvent, id: number) => void;
+}
+
+export const TodoItem: React.FC<Props> = React.memo(
+  ({
+    id,
+    title,
+    editableTitle,
+    editableTodoById,
+    isTodoChecked,
+    todoInputRef,
+    setEditableTitle,
+    editHandler,
+    deleteHandler,
+    toogleHandler,
+    onSubmit,
+  }) => {
+    return (
+      <div
+        data-cy="Todo"
+        className={classNames('todo', { completed: isTodoChecked })}
+      >
+        <label className="todo__status-label">
+          <input
+            data-cy="TodoStatus"
+            type="checkbox"
+            className="todo__status"
+            onChange={() => toogleHandler(id)}
+            checked={isTodoChecked}
+          />
+        </label>
+
+        {editableTodoById === id ? (
+          <form onSubmit={event => onSubmit(event, id)}>
+            <input
+              ref={todoInputRef}
+              onBlur={event => onSubmit(event, id)}
+              data-cy="TodoTitleField"
+              type="text"
+              className="todo__title-field"
+              placeholder="Empty todo will be deleted"
+              value={editableTitle}
+              onChange={event => setEditableTitle(event.target.value)}
+            />
+          </form>
+        ) : (
+          <span
+            data-cy="TodoTitle"
+            className="todo__title"
+            onDoubleClick={() => editHandler(id, title)}
+          >
+            {title || 'Todo is being saved now'}
+          </span>
+        )}
+
+        {editableTodoById !== id && (
+          <button
+            type="button"
+            className="todo__remove"
+            data-cy="TodoDelete"
+            onClick={() => deleteHandler([id])}
+          >
+            ×
+          </button>
+        )}
+      </div>
+    );
+  },
+);
+
+TodoItem.displayName = 'TodoItem';