how to generate a Http Request for AAD?

Question

so, I get the Access Token and I want to create a request...

HttpClient httpClient = new HttpClient(); httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accesToken);

HttpResponseMessage response = await httpClient.GetAsync("https://graph.microsoft.com/v1.0/users");

Also, the Problem may be on setting the scopes for the authentication...i set it to:

string[] scopes = new string[] { "https://graph.microsoft.com/.default" };

But I don't know if it gets all application permissions that I have (it is a deamon).

Answer 1

You can use this sample which will help you to create events with same client credential flow which you are using but you need to change some things here.

You need to first give the Calendar.ReadWrite permission in the Azure portal for your app.

You need to add the below code in the Program.cs

if (result != null)
            {
                var httpClient = new HttpClient();
                var apiCaller = new ProtectedApiCallHelper(httpClient);
                await apiCaller.CallWebAPIToPostEvent($"{config.ApiUrl}v1.0/users/{user obj id}/calendars/{calendar id}/events", result.AccessToken, Display);
            }

Then you need to add the below classes in the protectedApiCallHelper.cs

public class Event
{
    [JsonProperty("subject")]
    public string Subject { get; set; }
    [JsonProperty("body")]
    public Body Body;
    [JsonProperty("start")]
    public TimeAndDate Start;
    [JsonProperty("end")]
    public TimeAndDate End;
    [JsonProperty("location")]
    public Location Location;
    [JsonProperty("attendees")]
    public List<Attendees> Attendees;

}
public class Body
{
    [JsonProperty("contentType")]
    public string ContentType { get; set; }
    [JsonProperty("content")]
    public string Content { get; set; }
}
public class TimeAndDate
{
    [JsonProperty("dateTime")]
    public string DateTime { get; set; }
    [JsonProperty("timeZone")]
    public string TimeZone { get; set; }
}
public class Location
{
    [JsonProperty("displayName")]
    public string DisplayName { get; set; }
}
public class Attendees
{
    [JsonProperty("emailAddress")]
    public EmailAddress EmailAddress;
    [JsonProperty("type")]
    public string Type;
}
public class EmailAddress
{
    [JsonProperty("address")]
    public string Address { get; set; }
    [JsonProperty("name")]
    public string Name { get; set; }
}

In this same ProtectedApiCallHelper class you can create a post request and get the details by adding the below code

public async Task CallWebAPIToPostEvent(string webApiUrl, string accessToken, Action<JObject> processResult)
        {
            var defaultRequetHeaders = HttpClient.DefaultRequestHeaders;
            if (defaultRequetHeaders.Accept == null || !defaultRequetHeaders.Accept.Any(m => m.MediaType == "application/json"))
            {
                HttpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            }
            defaultRequetHeaders.Authorization = new AuthenticationHeaderValue("bearer", accessToken);

            var payload = new Event
            {
                Subject = "Let's go for lunch",
                Body = new Body
                {
                    ContentType = "HTML",
                    Content = "Does mid month work for you?"
                },
                Start = new TimeAndDate
                {
                    DateTime = "2019-03-15T12:00:00",
                    TimeZone = "Pacific Standard Time"
                },
                End = new TimeAndDate
                {
                    DateTime = "2019-03-15T14:00:00",
                    TimeZone = "Pacific Standard Time"
                },
                Location = new Location
                {
                    DisplayName = "Harry's Bar"
                },
                Attendees = new List<Attendees>
                {
                        new Attendees
                        {
                            EmailAddress = new EmailAddress
                            {
                                Address = "Shiva@nishantsingh.live",
                                Name = "Shiva"
                            },
                            Type = "required"
                        }
                }
            };
            // Serialize our concrete class into a JSON String
            var stringPayload = await Task.Run(() => JsonConvert.SerializeObject(payload));

            // Wrap our JSON inside a StringContent which then can be used by the HttpClient class
            var httpContent = new StringContent(stringPayload, Encoding.UTF8, "application/json");

            HttpResponseMessage response = await HttpClient.PostAsync(webApiUrl, httpContent);

            if (response.Content != null)
            {
                var responseContent = await response.Content.ReadAsStringAsync();
                Console.WriteLine(response.Content.ReadAsStringAsync().Result);
            }
        }

This will help you create the event with these details.