react_todo-app-with-context

src/App.tsx

@@ -1,156 +1,22 @@
 /* eslint-disable jsx-a11y/control-has-associated-label */
-import React from 'react';
+import { Header } from './components/Header/Header';
+import { TodoList } from './components/TodoList';
+import { Footer } from './components/Footer';
+import { useContext } from 'react';
+import { TodoContext } from './context/TodoContext';
+import { TodoContextType } from './types/types';
 
 export const App: React.FC = () => {
+  const { todos } = useContext(TodoContext) as TodoContextType;
+
   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>
+        <Header />
+        <TodoList />
+        {todos.length > 0 && <Footer />}
       </div>
     </div>
   );

src/components/Footer/Footer.tsx

@@ -0,0 +1,50 @@
+import { useContext } from 'react';
+import { TodoContext } from '../../context/TodoContext';
+import { Status, TodoContextType } from '../../types/types';
+import classNames from 'classnames';
+
+export const Footer: React.FC = () => {
+  const {
+    counterTodos,
+    setStatus,
+    status,
+    counterCompletedTodos,
+    clearCompleted,
+  } = useContext(TodoContext) as TodoContextType;
+
+  return (
+    <footer className="todoapp__footer" data-cy="Footer">
+      <span className="todo-count" data-cy="TodosCounter">
+        {counterTodos} items left
+      </span>
+
+      <nav className="filter" data-cy="Filter">
+        {Object.values(Status).map(statusValue => (
+          <a
+            key={statusValue}
+            href={`#/${statusValue.toLocaleLowerCase()}`}
+            className={classNames('filter__link', {
+              selected: status === statusValue,
+            })}
+            data-cy={`FilterLink${statusValue}`}
+            onClick={() => {
+              setStatus(statusValue);
+            }}
+          >
+            {statusValue}
+          </a>
+        ))}
+      </nav>
+
+      <button
+        type="button"
+        className="todoapp__clear-completed"
+        data-cy="ClearCompletedButton"
+        disabled={counterCompletedTodos === 0}
+        onClick={clearCompleted}
+      >
+        Clear completed
+      </button>
+    </footer>
+  );
+};

src/components/Footer/index.ts

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

src/components/Header/Header.tsx

@@ -0,0 +1,63 @@
+import { useContext, useState } from 'react';
+import { TodoContext } from '../../context/TodoContext';
+import { TodoContextType } from '../../types/types';
+import classNames from 'classnames';
+
+export const Header: React.FC = () => {
+  const [query, setQuery] = useState('');
+  const { addTodo, todos, counterCompletedTodos, toggleAllTodo, inputRef } =
+    useContext(TodoContext) as TodoContextType;
+
+  const reset = () => {
+    setQuery('');
+  };
+
+  const handleQueryChange = (newValue: string) => {
+    setQuery(newValue);
+  };
+
+  const handleSubmit = (event: React.FormEvent) => {
+    event.preventDefault();
+
+    if (!query.trim()) {
+      return;
+    }
+
+    addTodo({
+      id: 0,
+      title: query.trim(),
+      completed: false,
+    });
+
+    reset();
+  };
+
+  return (
+    <header className="todoapp__header">
+      {todos.length !== 0 && (
+        <button
+          type="button"
+          className={classNames('todoapp__toggle-all', {
+            active: counterCompletedTodos === todos.length,
+          })}
+          data-cy="ToggleAllButton"
+          onClick={toggleAllTodo}
+        />
+      )}
+
+      <form onSubmit={handleSubmit}>
+        <input
+          data-cy="NewTodoField"
+          type="text"
+          className="todoapp__new-todo"
+          placeholder="What needs to be done?"
+          value={query}
+          onChange={event => {
+            handleQueryChange(event.target.value);
+          }}
+          ref={inputRef}
+        />
+      </form>
+    </header>
+  );
+};

src/components/Header/index.ts

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