// Get infomation about the current logged in user.
public static async Task<UserInfo> GetUserInfoAsync(string accessToken)
{
UserInfo myInfo = new UserInfo();
using (var client = new HttpClient())
{
using (var request = new HttpRequestMessage(HttpMethod.Get, Settings.GetMeUrl))
{
request.Headers.Accept.Add(Json);
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
using (var response = await client.SendAsync(request))
{
if (response.StatusCode == HttpStatusCode.OK)
{
var json = JObject.Parse(await response.Content.ReadAsStringAsync());
myInfo.Name = json?["displayName"]?.ToString();
myInfo.Address = json?["mail"]?.ToString().Trim().Replace(" ", string.Empty);
}
}
}
}
return myInfo;
}
// Create email object in the required request format/data contract.
private SendMessageRequest CreateEmailObject(UserInfo to, string subject, string body)
{
return new SendMessageRequest
{
Message = new Message
{
Subject = subject,
Body = new MessageBody
{
ContentType = "Html",
Content = body
},
ToRecipients = new List<Recipient>
{
new Recipient
{
EmailAddress = new UserInfo
{
Name = to.Name,
Address = to.Address
}
}
}
},
SaveToSentItems = true
};
}
// Create email with predefine body and subject.
SendMessageRequest GenerateEmail(UserInfo to)
{
return CreateEmailObject(
to: to,
subject: Settings.MessageSubject,
body: string.Format(Settings.MessageBody, to.Name)
);
}
// Take data and put into Index view.
public ActionResult Index(SendMessageResponse sendMessageResponse, UserInfo userInfo)
{
EnsureUser(ref userInfo);
ViewBag.UserInfo = userInfo;
ViewBag.MessageResponse = sendMessageResponse;
return View();
}
// Use the login user name or recipient email address if no user name.
void EnsureUser(ref UserInfo userInfo)
{
var currentUser = (UserInfo)Session[SessionKeys.Login.UserInfo];
if (userInfo == null || string.IsNullOrEmpty(userInfo.Address))
{
userInfo = currentUser;
}
else if (userInfo.Address.Equals(currentUser.Address, StringComparison.OrdinalIgnoreCase))
{
userInfo = currentUser;
}
else
{
userInfo.Name = userInfo.Address;
}
}
public async Task<ActionResult> SendMessageSubmit(UserInfo userInfo)
{
// After Index method renders the View, user clicks Send Mail, which comes in here.
EnsureUser(ref userInfo);
// Send email using the Microsoft Graph API.
var sendMessageResult = await UnifiedApiHelper.SendMessageAsync(
(string)Session[SessionKeys.Login.AccessToken],
GenerateEmail(userInfo));
// Reuse the Index view for messages (sent, not sent, fail) .
// Redirect to tell the browser to call the app back via the Index method.
return RedirectToAction(nameof(Index), new RouteValueDictionary(new Dictionary<string,object>{
{ "Status", sendMessageResult.Status },
{ "StatusMessage", sendMessageResult.StatusMessage },
{ "Address", userInfo.Address },
}));
}