public async Task <string> AddFriend(string user_id, string friend_email)
{
if (friend_email.Equals(AccountManager.GetAccountMail().Replace('.', ',')))
{
return("You cannot add yourshelve as a friend");
}
User u = GetUserByEmail(friend_email);
if (u == null)
{
return("The user doesn't exist");
}
if (CheckIfIsYourFriend(user_id, friend_email))
{
return("The user is already your friend");
}
Friend friend = new Friend()
{
FriendId = u.Id
};
IDictionary <string, Friend> IdElementPair = new Dictionary <string, Friend>();
IdElementPair.Add(friend_email, friend);
FirebaseDB firebaseDB = new FirebaseDB(BASE_URL);
string path = user_id + "/friends";
FirebaseDB firebaseDBUserFavItems = firebaseDB.NodePath(path);
string friendToAdd = JsonConvert.SerializeObject(IdElementPair);
FirebaseResponse patchResponse = firebaseDBUserFavItems
.Patch(friendToAdd);
return(patchResponse.Success ? "Friend added correctly" : "A problem appears adding a friend");
}
public async Task <bool> CheckUserExists(User user)
{
FirebaseDB firebaseDB = new FirebaseDB(BASE_URL);
FirebaseDB firebaseDBUsers = firebaseDB.NodePath("users/" + user.Email);
FirebaseResponse getResponse = firebaseDBUsers.Get();
if (getResponse.Success)
{
string response = getResponse.JSONContent;
if (response.Equals("null"))
{
return(false);
}
else
{
return(true);
}
}
return(false);
}
private bool CheckIfIsYourFriend(string user_id, string friend_email)
{
FirebaseDB firebaseDB = new FirebaseDB(BASE_URL);
FirebaseDB firebaseDBUserFriend = firebaseDB.NodePath(user_id + "/friends/" + friend_email.Replace('.', ','));
FirebaseResponse getResponse = firebaseDBUserFriend.Get();
if (getResponse.Success)
{
string response = getResponse.JSONContent;
if (response.Equals("null"))
{
return(false);
}
else
{
return(true);
}
}
return(false);
}