Pony.fm/resources/assets/scripts/app/services/images.coffee

angular.module('ponyfm').factory('images', [
    '$rootScope'
    ($rootScope) ->
        def = null
        self =
            images: []
            isLoading: true
            refresh: (force) ->
                return def if !force && def
                def = new $.Deferred()

                self.images = []
                self.isLoading = true

                $.getJSON('/api/web/images/owned').done (images) -> $rootScope.$apply ->
                    self.images = images
                    self.isLoading = false
                    def.resolve images

                return def

        self.refresh()
        return self
])