http angular inteceptor for loading spinner

httpInteceptor.coffee

angular.module('matchupApp').config ['$httpProvider', ($httpProvider) ->
  $httpProvider.interceptors.push ['$log', '$rootScope', ($log, $rootScope) ->
    requestCount = 0
    processIsLoading = (adjustment) ->
      requestCount += adjustment
      isStillLoading = requestCount > 0
      $rootScope.loading = isStillLoading
      isStillLoading

    request = (config) ->
      processIsLoading 1
      config

    response = (promise) ->
      processIsLoading -1
      promise

    responseError = (response) ->
      $log.info 'response', response
      processIsLoading -1

      if response.status = '401'
        window.location = "/app#/unauthorized"
        return

      if response.status = '500'
        window.location = "/app#/servererror"
        return

      window.location = "/app#/unknownerror"
      response


    request: request
    response: response
    responseError: responseError

  ]
]