// @flow

export const activateLoading = (uiState: Object) => ({ ...uiState, isLoading: true })
export const deactivateLoading = (uiState: Object) => ({ ...uiState, isLoading: false })

export const addOneNotification = (uiState: Object, notification?: Object) => ({
  ...uiState,
  notifications: uiState.notifications.concat(
    ...(notification
      ? [typeof notification === 'string' ? { message: notification } : notification]
      : []),
  ),
})

export const addMultipleNotifications = (uiState: Object, notifications?: Object[] = []) => ({
  ...uiState,
  notifications: uiState.notifications.concat(
    notifications.map(
      notification => (typeof notification === 'string' ? { message: notification } : notification),
    ),
  ),
})

export const removeFirstNotification = (uiState: Object) => ({
  ...uiState,
  notifications: uiState.notifications.splice(1),
})