Map checkbox inputs group to AngularJS array

I need to map a list of a selected checkbox to an javascript (AngularJS) array. When the user select one checkbox I need to update the related array. This array must have this structure:

$scope.items = ["value specific selected checkbox1", "value specific selected checkbox2"]

If the user unselect one checkbox I need to remove the specific value from items array. The array should not have duplicate values.