App.js

const App = () => {
  const { onSubmit, friends, undo } = useApp()
  
  const [name, setName] = useState('')
  const [gender, setGender] = useState('Male')
  const onNameChange = (e) => setName(e.target.value)
  const onGenderChange = (e) => setGender(e.target.value)
  
  const resetValues = () => {
    setName('')
    setGender('Male')
  }
  
  return (
    <div>
      <form className="form" onSubmit={onSubmit({ name, gender }, resetValues)}>
        <div>
          <input
            onChange={onNameChange}
            value={name}
            type="text"
            name="name"
            placeholder="Friend's Name"
          />
        </div>
        <div>
          <select onChange={onGenderChange} name="gender" value={gender}>
            <option value="Male">Male</option>
            <option value="Female">Female</option>
            <option value="Other">Other</option>
          </select>
        </div>
        <div>
          <button type="submit">Add</button>
        </div>
      </form>
      <div className="undo-actions">
        <div>
          <button type="button" onClick={undo}>
            Undo
          </button>
        </div>
      </div>
      <div className="boxes">
        {friends.map(({ name, gender }, index) => (
          <FriendBox key={`friend_${index}`} gender={gender}>
            <div className="box-name">Name: {name}</div>
            <div className="gender-container">
              <img src={gender === 'Female' ? female : male} alt="" />
            </div>
          </FriendBox>
        ))}
      </div>
    </div>
  )
}