public IHttpActionResult CheckRelationshipStatus(FriendRelationships rel)
{
if (ModelState.IsValid)
{
var existingRelationship = db.FriendRelationships.FirstOrDefault(x => (x.FromUsername.Equals(rel.FromUsername) && x.ToUsername.Equals(rel.ToUsername)) ||
(x.ToUsername.Equals(rel.FromUsername) && x.FromUsername.Equals(rel.ToUsername)));
if (existingRelationship != null)
{
return Json(new { success = true, isFriend = true });
}
}
return BadRequest();
}
public async Task<IHttpActionResult> AddFriend(FriendRelationships friendRelationships)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
else
{
//always set accepted to false - confirmation pending from other user
friendRelationships.HasAccepted = false;
//check that the username the request is coming from exists
var checkFromUser = db.Users.FirstOrDefault(x => x.UserName == friendRelationships.FromUsername);
if (checkFromUser != null)
{
//check that the username the request is for exists
var checkToUser = db.Users.FirstOrDefault(x => x.UserName == friendRelationships.ToUsername);
if (checkToUser != null)
{
//check for any matching relationship already present (could be reversed so that is also checked)
var existingRelationship = db.FriendRelationships.Where(x => (x.FromUsername.Equals(friendRelationships.FromUsername) && x.ToUsername.Equals(friendRelationships.ToUsername)) ||
(x.ToUsername.Equals(friendRelationships.FromUsername) && x.FromUsername.Equals(friendRelationships.ToUsername))).ToList();
if (existingRelationship.Count > 0)
{
//existing relationship between the two users exists
return BadRequest("A relationship already exists between these users");
}
else {
//else add the relationship to the database
db.FriendRelationships.Add(friendRelationships);
db.SaveChanges();
//send a push notification to the requested user's device
await PostNotification("gcm", "friend request", checkFromUser.Email, checkToUser.Email);
return Json(new { success = true });
}
}
return BadRequest("Incorrect To or From Username");
}
return BadRequest("Incorrect To or From Username");
}
}
public async Task<IHttpActionResult> Follow(FriendRelationships friendRelationships)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
else
{
//always set accepted to false - confirmation pending from other user
friendRelationships.HasAccepted = false;
//check that the username the request is coming from exists
var checkFromUser = db.Users.FirstOrDefault(x => x.UserName == friendRelationships.FromUsername);
var checkToUser = db.Users.FirstOrDefault(x => x.UserName == friendRelationships.ToUsername);
if (checkFromUser != null && checkToUser != null)
{
bool existingFollowing = false;
foreach(ApplicationUser user in checkFromUser.Following)
{
if(user.UserName.Equals(checkToUser.UserName, StringComparison.OrdinalIgnoreCase))
{
existingFollowing = true;
break;
}
}
if (existingFollowing == true)
{
return Json(new { success = false, cause = "You are already following " + checkToUser.UserName });
}
else
{
checkFromUser.Following.Add(checkToUser);
checkToUser.Followers.Add(checkFromUser);
try
{
db.SaveChanges();
}
catch (Exception)
{
}
//send a push notification to the requested user's device
await PostNotification("gcm", String.Format("{0} is now following you", checkFromUser.UserName), checkFromUser.Email, checkToUser.Email);
var myMessage = new SendGridMessage();
myMessage.From = new MailAddress("*****@*****.**");
myMessage.AddTo(string.Format(@"{0} <{1}>", checkToUser.UserName, checkToUser.Email));
myMessage.Subject = string.Format("{0} is now following you", checkFromUser.UserName);
myMessage.Html = "<p>New Follower</p>";
myMessage.Text = "New Follower plain text!";
var apiKey = System.Environment.GetEnvironmentVariable("SENDGRID_APIKEY");
var transportWeb = new Web(apiKey);
// Send the email.
await transportWeb.DeliverAsync(myMessage);
return Json(new { success = true });
}
}
}
return BadRequest("Incorrect To or From Username");
}
public IHttpActionResult Unfollow(FriendRelationships friendRelationships)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
else
{
friendRelationships.HasAccepted = false;
//check that the username the request is coming from exists
var checkFromUser = db.Users.FirstOrDefault(x => x.UserName == friendRelationships.FromUsername);
var checkToUser = db.Users.FirstOrDefault(x => x.UserName == friendRelationships.ToUsername);
if (checkFromUser != null && checkToUser != null)
{
var friend = checkFromUser.Following.FirstOrDefault(x => x.UserName.Equals(checkToUser.UserName, StringComparison.OrdinalIgnoreCase));
var altFriend = checkToUser.Followers.FirstOrDefault(x => x.UserName.Equals(checkFromUser.UserName, StringComparison.OrdinalIgnoreCase));
if (friend != null && altFriend != null)
{
checkFromUser.Following.Remove(friend);
checkToUser.Followers.Remove(altFriend);
try
{
db.SaveChanges();
return Json(new { success = true, cause = "You unfollowed " + checkToUser.UserName });
}
catch (Exception)
{
}
}
else
{
return Json(new { success = false, cause = "You are not following " + checkToUser.UserName });
}
}
}
return BadRequest("Incorrect To or From Username");
}
