protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
if (!string.IsNullOrEmpty(Request.Form["signed_request"]))
{
string signedRequest = Request.Form["signed_request"];
if (!FacebookUtil.ValidateSignedRequest(signedRequest)) return;
var regInfo = FacebookUtil.GetRegistrationInfo(signedRequest);
// Check if user is already registered on the site (just re-connecting to the app)
bool alreadyRegistered = false;
string userName = null;
using (var db = new NietoYostenDbDataContext())
{
if (db.FacebookUserIds.Any(x => x.FbUid == regInfo.UserId))
{
// Nothing to do here other than log the user in
alreadyRegistered = true;
userName = FacebookUtil.GetUserNameFromFbUid(db, regInfo.UserId);
}
}
if (alreadyRegistered)
{
FormsAuthentication.RedirectFromLoginPage(userName, true);
return;
}
// Merge with site user if necessary
var existingUser = Membership.GetUserNameByEmail(regInfo.Email);
if (!string.IsNullOrEmpty(existingUser))
{
var aspnetUser = Membership.GetUser(existingUser);
var userId = new FacebookUserId()
{
UserId = (Guid) aspnetUser.ProviderUserKey,
FbUid = regInfo.UserId
};
using (var db = new NietoYostenDbDataContext())
{
db.FacebookUserIds.InsertOnSubmit(userId);
db.SubmitChanges();
}
// Login user after doing the merge
FormsAuthentication.RedirectFromLoginPage(aspnetUser.UserName, true);
return;
}
else
{
// Create new user
MembershipCreateStatus createStatus;
var password = "******";
var newUser = Membership.CreateUser(regInfo.UserName, password, regInfo.Email, null, null, true, Guid.NewGuid(), out createStatus);
// Grant role to user: default to friend for now
// TODO: Grant role based on membership to NY family Facebook group
Roles.AddUserToRole(newUser.UserName, "friend");
switch (createStatus)
{
case MembershipCreateStatus.Success:
var userId = new FacebookUserId()
{
UserId = (Guid) newUser.ProviderUserKey,
FbUid = regInfo.UserId
};
using (var db = new NietoYostenDbDataContext())
{
db.FacebookUserIds.InsertOnSubmit(userId);
db.SubmitChanges();
}
FormsAuthentication.RedirectFromLoginPage(newUser.UserName, true);
break;
default:
Response.Redirect("FbRegister.aspx?facebook_result=success");
break;
}
}
}
}
}
partial void UpdateFacebookUserId(FacebookUserId instance);
partial void DeleteFacebookUserId(FacebookUserId instance);
partial void InsertFacebookUserId(FacebookUserId instance);
