Api-Service and HTTP-Service in Angular 2 - http

Im fairly new to Angular 2 and i have got a question.
In my "older" Angular 1 Webapps i had a "Api-Service" and a "Http-Service" every time.
They looked like this:
"ApiService":
angular.module('ionicApp.apiServices', [])
.service('apiService', function(httpService) {
return {
getProfile: function(){
return httpService.async('get', 'profile', {}, {}, {});
},
addSkills: function(skillList) {
var url = 'profile/skills';
return httpService.async('post', url, {}, {}, skillList);
}
}
HTTP-Service:
angular.module('ionicApp.httpService', [])
.service('httpService', function ($http, $rootScope, $state, $ionicLoading, $ionicHistory) {
var httpCall = {
async : function (method, url, header, params, data) {
// Setze den X-AUTH-TOKEN in den Header, welcher für die Authentifizierung des Users verantwortlich ist
if (url != 'login' || url != 'user/registerApp' || url != 'view/cities' || url != 'view/occupationals' || url != 'view/industries') {
header['X-AUTH-TOKEN'] = $rootScope.userToken;
}
header['Access-Control-Allow-Origin'] = '*';
// $http returns a promise, which has a then function, which also returns a promise
var promise = $http({
method : method,
url : ipurl + url,
headers : header,
params : params,
data : data,
timeout: 10000,
withCredentials : true
}).then(function successCallback(response) {
if (url != 'user/registerApp' || url != 'view/cities' || url != 'view/occupationals' || url != 'view/industries') {
$rootScope.userToken = response.headers('X-AUTH-TOKEN');
}
return response;
}, function errorCallback(response) {
if (response.status === 401) {
$rootScope.isFailure = true;
$rootScope.failure = "Sie haben keine gültige Session mehr. Bitte loggen Sie sich erneut ein.";
doLogout();
} else {
return response;
}
});
// Return the promise to the controller
return promise;
},
doLogout : doLogout
};
return httpCall;
});
Ok, now my question is, how can i do this with angular 2?
I already did an Api-Service and an HTTP-Service (both are Injectables), and injected them in each component.
But what´s the trick to get them functional?
Thanks so much!

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