maybe my code will mess here beacuse I'm new into firebase stuff and there is lack doc for newbie like me, so I want to make save and load data from firebase, there is 2 scene the first for main menu and second one the main game,so when firstime login or auto login, user will load current user data from realtime database (I'm using firebase) also applies to user when back to main menu.
in the second scene itself, user load current user highscore data at first start then when game over if the score > lasthighscore that will save/update latest highscore to realtime database.
here the preview this is when I auto-login then playgame until game over:
it's supposed to be updated but not when back to main menu, I already try with player prefs since i erase all data when sign out so the highscore always be 0 and if login with other account that highscore is not belong to other account.
here my firebase script on main menu:
private void Start()
{
Time.timeScale = 1;
mainPanel.SetActive(true);
InitializeFirebase();
}
void InitializeFirebase()
{
auth = FirebaseAuth.DefaultInstance;
DBreference = FirebaseDatabase.DefaultInstance.RootReference;
auth.StateChanged += AuthStateChanged;
AuthStateChanged(this, null);
}
void AuthStateChanged(object sender, System.EventArgs eventArgs)
{
//This checks if the user (your local user) is the same as the one from the auth
if (auth.CurrentUser != User)
{
//this seems the same, but user could have been null before
bool signedIn = User != auth.CurrentUser && auth.CurrentUser != null;
if (!signedIn && User != null)
{
Debug.Log("Signed out " + User.UserId);
loginPanel.SetActive(true);
}
//this is important step, this user is the one you should be working with
User = auth.CurrentUser;
if (signedIn)
{
Debug.Log("Signed in " + User.UserId);
userNameShowText.text = User.DisplayName;
StartCoroutine(LoadUserData());
loginPanel.SetActive(false);
// //highScoreMainMenu.text = PlayerPrefs.GetInt("highscore").ToString("0000000");
}
else
{
loginPanel.SetActive(true);
}
}
}
public IEnumerator Login(string _email, string _password)
{
//Call the Firebase auth signin function passing the email and password
var LoginTask = auth.SignInWithEmailAndPasswordAsync(_email, _password);
//Wait until the task completes
yield return new WaitUntil(predicate: () => LoginTask.IsCompleted);
if (LoginTask.Exception != null)
{
//If there are errors handle them
Debug.LogWarning(message: $"Failed to register task with {LoginTask.Exception}");
FirebaseException firebaseEx = LoginTask.Exception.GetBaseException() as FirebaseException;
AuthError errorCode = (AuthError)firebaseEx.ErrorCode;
string message = "Login Failed!";
switch (errorCode)
{
case AuthError.MissingEmail:
message = "Missing Email";
break;
case AuthError.MissingPassword:
message = "Missing Password";
break;
case AuthError.WrongPassword:
message = "Wrong Password";
break;
case AuthError.InvalidEmail:
message = "Invalid Email";
break;
case AuthError.UserNotFound:
message = "Account does not exist";
break;
}
warningLoginText.text = message;
}
else
{
//User is now logged in
//Now get the result
User = LoginTask.Result;
Debug.LogFormat("User signed in successfully: {0} ({1})", User.DisplayName, User.Email);
warningLoginText.text = "";
confirmLoginText.text = "Logged In";
StartCoroutine(LoadUserData());
yield return new WaitForSeconds(2);
userNameShowText.text = User.DisplayName;
UserDataScreen(); // Change to user data UI
confirmLoginText.text = "";
ClearLoginFeilds();
ClearRegisterFeilds();
}
}
public IEnumerator UpdateHighScore(int _highScore)
{
var DBTask = DBreference.Child("users").Child(auth.CurrentUser.UserId).Child("highscore").SetValueAsync(_highScore);
yield return new WaitUntil(predicate: () => DBTask.IsCompleted);
if (DBTask.Exception != null)
{
Debug.LogWarning(message: $"Failed to register task with {DBTask.Exception}");
}
else
{
//giscrore now updated
}
}
and this is for the game scene also same function for update higscore like on main menu.
void Start()
{
InitializeFirebase();
YetGameOver();
//GetScore
score = 0;
scoreText.text = score.ToString("00000");
//highScoreText.text = "HI :" + PlayerPrefs.GetInt("highscore", 0).ToString("00000");
maxTime = .1f;
}
void InitializeFirebase()
{
auth = FirebaseAuth.DefaultInstance;
DBreference = FirebaseDatabase.DefaultInstance.RootReference;
auth.StateChanged += AuthStateChanged;
AuthStateChanged(this, null);
}
void AuthStateChanged(object sender, System.EventArgs eventArgs)
{
//This checks if the user (your local user) is the same as the one from the auth
if (auth.CurrentUser != User)
{
//this seems the same, but user could have been null before
bool signedIn = User != auth.CurrentUser && auth.CurrentUser != null;
if (!signedIn && User != null)
{
Debug.Log("Signed out " + User.UserId);
}
//this is important step, this user is the one you should be working with
User = auth.CurrentUser;
if (signedIn)
{
Debug.Log("Signed in " + User.UserId);
StartCoroutine(LoadUserData());
//highScoreMainMenu.text = PlayerPrefs.GetInt("highscore").ToString("0000000");
}
}
}
public void GameOver()
{
SaveData();
StartCoroutine(WaitToDeath());
}
public void SaveData()
{
Debug.Log("Saved");
StartCoroutine(UpdateHighScore(PlayerPrefs.GetInt("highscore", 0)));
}
public IEnumerator WaitToDeath()
{
_CamShake.instance.shouldShake = true;
DeathSound();
gameOverPanel.SetActive(true);
endHighScoreText.text = "HI :" + PlayerPrefs.GetInt("highscore").ToString("0000000");
scoreText.gameObject.SetActive(false);
highScoreText.gameObject.SetActive(false);
yield return new WaitForSeconds(.1f);
//_AdmobAds.instance.ShowInterstitialAd();
isStarted = false;
isGameOver = true;
Time.timeScale = 0;
}
//same function like main menu
public IEnumerator UpdateHighScore(int _highScore)
{
var DBTask = DBreference.Child("users").Child(auth.CurrentUser.UserId).Child("highscore").SetValueAsync(_highScore);
yield return new WaitUntil(predicate: () => DBTask.IsCompleted);
if (DBTask.Exception != null)
{
Debug.LogWarning(message: $"Failed to register task with {DBTask.Exception}");
}
else
{
//highscore are now updated
}
}
public IEnumerator LoadUserData()
{
//Get the currently logged in user data
var DBTask = DBreference.Child("users").Child(User.UserId).GetValueAsync();
yield return new WaitUntil(predicate: () => DBTask.IsCompleted);
if (DBTask.Exception != null)
{
Debug.LogWarning(message: $"Failed to register task with {DBTask.Exception}");
}
else if (DBTask.Result.Value == null)
{
//No data exists yet
highScoreText.text = "0";
endHighScoreText.text = "0";
}
else
{
//Data has been retrieved
DataSnapshot snapshot = DBTask.Result;
highScoreText.text = endHighScoreText.text = snapshot.Child("highscore").Value.ToString();
}
}
You don't capture child in this method. You can only capture all the data from the root. So, simply remove the child. It will work.
my solution to firebase realtime database not working was that my google-services.json wasnt updated after adding the google-services.json from firebase auth. firebase, project overview cogwheel, project settings, json on that page somewhere.
and my problem with firebase auth before that was that i didnt set the Client ID in unity, window, google play games, setup, android setup.. get the id from google play console, play games services, setup & management, configuration, and figure out how to add game server credentials
I have a quiz app and I would like to display scores on last screen, however I have an issue how to do it.
Here' how my score script looks like:
{
//Zliczanie punktów i wyświetlanie wyniku
public static int pointssum = 0;
public Text points;
private string user;
private Text scoresboard;
USers users = new USers();
void Start()
{
points = GetComponent<Text>();
Posttodb();
}
void Update()
{
points.text = "Poprawne odpowiedzi: " + pointssum;
}
private void Posttodb()
{
user = nazwagracza.Playernick;
if (user!= null)
{
USers users = new USers();
RestClient.Put("https://quizgame-inz.firebaseio.com/" + user + ".json", users);
}
}
private void Getdata()
{
RestClient.GetArray<USers>("https://quizgame-inz.firebaseio.com/.json?orderBy='scores'&startAt=0").Then(response =>
{
users = response;
});
}
}
I tried to assign this data to user value but I'm getting error cannot implicitly convert type.
Can you please help we with this?
users is of type USers .. it is not an array.
You did probably mean e.g.
// Returns an array of USers
RestClient.GetArray<USers>("https://quizgame-inz.firebaseio.com/.json?orderBy='scores'&startAt=0").Then(response =>
{
// get the first instance
users = response[0];
});
or make users of type
USers[] users;
depending on your needs.
Due to the naming and description it sounds like you would want to do the latter since you want to display all scores, not only the best one.
The following 3 functions are used to set up email and other auth checks (called in order)
private void buildSignInIntentBuilder() {
ActionCodeSettings actionCodeSettings = ActionCodeSettings.newBuilder()
.setAndroidPackageName(getString(R.string.packageName), true, null)
.setHandleCodeInApp(true)
.setUrl(getString(R.string.dynamic_link_url))
.build();
List<AuthUI.IdpConfig> providers = Arrays.asList(
new AuthUI.IdpConfig.EmailBuilder()
.enableEmailLinkSignIn()
.setActionCodeSettings(actionCodeSettings)
.build(),
// new AuthUI.IdpConfig.EmailBuilder().setRequireName(false).build(),
new AuthUI.IdpConfig.PhoneBuilder()
.build(),
new AuthUI.IdpConfig.GoogleBuilder()
.build(),
new AuthUI.IdpConfig.FacebookBuilder()
.build());
signInIntentBuilder = AuthUI.getInstance()
.createSignInIntentBuilder()
.setIsSmartLockEnabled(false)
.setAvailableProviders(providers)
.setLogo(R.drawable.icon_forget_me_not_1);
}
private void catchEmailLinkSignIn() {
Log.d(TAG, "Intent: " + getIntent().getExtras());
if (AuthUI.canHandleIntent(getIntent())) {
if (getIntent().getExtras() == null) {
return;
}
String link = getIntent().getExtras().getString(ExtraConstants.EMAIL_LINK_SIGN_IN);
Log.d(TAG, "link: " + link);
if (link != null) {
signInIntentBuilder.setEmailLink(link);
}
}
}
private void createCheckAndSigninListener() {
// set firebase sign in listener
mAuthStateListner = firebaseAuth -> {
// Already logged in
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
Log.d(TAG, "user already signed in");
// Check user even if signed in to register him to database (if haven't)
FirebaseAuthHelper.getInstance().checkRegisterUser(user, this, CHECK_USER_DB);
} else {
Log.d(TAG, "user hasn't signed in");
// Signed out or hasn't logged in
startActivityForResult(
signInIntentBuilder
.build(),
RC_SIGN_IN
);
}
};
}
I have set up a dynamic link with firebase hosting. And being able to redirect into the same activity upon clicking the received email link.
However,
String link = getIntent().getExtras().getString(ExtraConstants.EMAIL_LINK_SIGN_IN);
Log.d(TAG, "link: " + link); // --> produces "link: null"
Shows despite successfully getting a intent, there is no EMAIL_LINK_SIGNIN extra in the getExtras(). I spend few hours looking into the source code of FirebaseUi, but I didn't find where the constant EMAIL_LINK_SIGN_IN is used and how is the intent from dynamic link parsed.
Any idea how to fix this problem is appreciated. I had already spent a whole day trying to figure this out.
Instead of using String link = getIntent().getExtras().getString(ExtraConstants.EMAIL_LINK_SIGN_IN);
use getIntent().getData().toString(); instead.
Is there a way to change the text in an Editor cell after an event?
I have an Editor cell that shows an address from an SQLite database. I also have a button that gets the current address and shows this in an alert that asks if they would like to update the address to this. If Yes, then I would like to show the new address in the Editor cell.
public class UserInfo : INotifyPropertyChanged
{
public string address;
public string Address
{
get { return address; }
set
{
if (value.Equals(address, StringComparison.Ordinal))
{
return;
}
address = value;
OnPropertyChanged();
}
}
public event PropertyChangedEventHandler PropertyChanged;
void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
var handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
}
My code for the editor cell is
Editor userAddress = new Editor
{
BindingContext = uInfo, // have also tried uInfo.Address here
Text = uInfo.Address,
Keyboard = Keyboard.Text,
};
and then this after it has got the current address I have this
bool response = await DisplayAlert("Current Address", "Would you like to use this as your address?\n" + currAddress, "No", "Yes");
if (response)
{
//we will update the editor to show the current address
uInfo.Address = currAddress;
}
How do I get it to update the Editor cell to show the new address?
You are setting the BindingContext of the control, but not specifying a binding to go with it. You want to bind the TextProperty of the Editor to the Address property of your context.
Editor userAddress = new Editor
{
BindingContext = uinfo,
Keyboard = Keyboard.Text
};
// bind the TextProperty of the Editor to the Address property of your context
userAddress.SetBinding (Editor.TextProperty, "Address");
This may also work, but I'm not positive the syntax is correct:
Editor userAddress = new Editor
{
BindingContext = uinfo,
Text = new Binding("Address"),
Keyboard = Keyboard.Text
};
I have a page in my application which always shows updated list of online users.
Now, to keep the list-which is stored in application object- updated, i do the below steps
add user to list when login
remove user on log off
Then to handle browser close/navigate away situations, I have a timestamp along with the username in the collection
An ajax call every 90 seconds updates the timestamp.
The problem:
I need something to clean this list every 120 seconds to remove entries with old timestamps.
How do I do this within my web application? ie Call a function every 2 mins.
PS: I thought of calling a webservice every 2 mins using a scheduler , but the hosting environment do not allow any scheduling.
Do the following inside a global filter.
public class TrackLoginsFilter : ActionFilterAttribute
{
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
Dictionary<string, DateTime> loggedInUsers = SecurityHelper.GetLoggedInUsers();
if (HttpContext.Current.User.Identity.IsAuthenticated )
{
if (loggedInUsers.ContainsKey(HttpContext.Current.User.Identity.Name))
{
loggedInUsers[HttpContext.Current.User.Identity.Name] = System.DateTime.Now;
}
else
{
loggedInUsers.Add(HttpContext.Current.User.Identity.Name, System.DateTime.Now);
}
}
// remove users where time exceeds session timeout
var keys = loggedInUsers.Where(u => DateTime.Now.Subtract(u.Value).Minutes >
HttpContext.Current.Session.Timeout).Select(u => u.Key);
foreach (var key in keys)
{
loggedInUsers.Remove(key);
}
}
}
To retrieve the user list
public static class SecurityHelper
{
public static Dictionary<string, DateTime> GetLoggedInUsers()
{
Dictionary<string, DateTime> loggedInUsers = new Dictionary<string, DateTime>();
if (HttpContext.Current != null)
{
loggedInUsers = (Dictionary<string, DateTime>)HttpContext.Current.Application["loggedinusers"];
if (loggedInUsers == null)
{
loggedInUsers = new Dictionary<string, DateTime>();
HttpContext.Current.Application["loggedinusers"] = loggedInUsers;
}
}
return loggedInUsers;
}
}
Don't forget to Register you filter in global.asax. It's probably a good idea to have an app setting to switch this off.
GlobalFilters.Filters.Add(new TrackLoginsFilter());
Also remove users at logoff to be more accurate.
SecurityHelper.GetLoggedInUsers().Remove(WebSecurity.CurrentUserName);
In your Account Controller
public ActionResult Login(LoginModel model, string returnUrl)
{
if (ModelState.IsValid)
{
if (Membership.ValidateUser(model.UserName, model.Password))
{
FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
if (HttpRuntime.Cache["LoggedInUsers"] != null) //if the list exists, add this user to it
{
//get the list of logged in users from the cache
List<string> loggedInUsers = (List<string>)HttpRuntime.Cache["LoggedInUsers"];
//add this user to the list
loggedInUsers.Add(model.UserName);
//add the list back into the cache
HttpRuntime.Cache["LoggedInUsers"] = loggedInUsers;
}
else //the list does not exist so create it
{
//create a new list
List<string> loggedInUsers = new List<string>();
//add this user to the list
loggedInUsers.Add(model.UserName);
//add the list into the cache
HttpRuntime.Cache["LoggedInUsers"] = loggedInUsers;
}
if (!String.IsNullOrEmpty(returnUrl))
{
return Redirect(returnUrl);
}
else
{
return RedirectToAction("Index", "Home");
}
}
else
{
ModelState.AddModelError("", "The user name or password provided is incorrect.");
}
}
// If we got this far, something failed, redisplay form
return View(model);
}
public ActionResult LogOff()
{
string username = User.Identity.Name; //get the users username who is logged in
if (HttpRuntime.Cache["LoggedInUsers"] != null)//check if the list has been created
{
//the list is not null so we retrieve it from the cache
List<string> loggedInUsers = (List<string>)HttpRuntime.Cache["LoggedInUsers"];
if (loggedInUsers.Contains(username))//if the user is in the list
{
//then remove them
loggedInUsers.Remove(username);
}
// else do nothing
}
//else do nothing
FormsAuthentication.SignOut();
return RedirectToAction("Index", "Home");
}
in your partial view.
#if (HttpRuntime.Cache["LoggedInUsers"] != null)
{
List<string> LoggedOnUsers = (List<string>)HttpRuntime.Cache["LoggedInUsers"];
if (LoggedOnUsers.Count > 0)
{
<div class="ChatBox">
<ul>
#foreach (string user in LoggedOnUsers)
{
<li>
<div class="r_row">
<div class="r_name">#Html.Encode(user)</div>
</div>
</li>
}
</ul>
</div>
}
}
render this partial view when user log in.
use this script call ever 90 second
<script type="text/javascript">
$(function () {
setInterval(loginDisplay, 90000);
});
function loginDisplay() {
$.post("/Account/getLoginUser", null, function (data) {
});
}
</script>
Here is the white elephant solution.
Instead of maintaining this list in application object, maintain this list in database. Then you can use database jobs to work on this list periodically. Establish SQL notification on this object so that everytime this list is purged you get refreshed data in your application.
Use Ajax to send "I am still online" message to the server in every 30 seconds. This is the best way to find who is really online.
So here what I did:
Create a table in the database
CREATE TABLE [dbo].[OnlineUser]
(
[ID] [int] IDENTITY(1,1) NOT NULL,
[Guid] [uniqueidentifier] NOT NULL,
[Email] [nvarchar](500) NOT NULL,
[Created] [datetime] NOT NULL,
CONSTRAINT [PK_OnlineUser] PRIMARY KEY CLUSTERED
(
[ID] ASC
) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
Override the OnActionExecution method. This method is in a separate controller in my case is called AuthController then every other controller that required authemtication inherits from this controller.
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
base.OnActionExecuting(filterContext);
// session variable that is set when the user authenticates in the Login method
var accessSession = Session[Constants.USER_SESSION];
// load cookie is set when the user authenticates in the Login method
HttpCookie accessCookie = System.Web.HttpContext.Current.Request.Cookies[Constants.USER_COOKIE];
// create session from cookie
if (accessSession == null)
{
if (accessCookie != null)
{
if (!string.IsNullOrEmpty(accessCookie.Value))
accessSession = CreateSessionFromCookie(accessCookie);
}
}
// if session does not exist send user to login page
if (accessSession == null)
{
filterContext.Result = new RedirectToRouteResult(
new RouteValueDictionary
{
{"controller", "Account"},
{"action", "Login"}
}
);
return;
}
else
{
TrackLoggedInUser(accessSession.ToString());
}
}
private List<OnlineUser> TrackLoggedInUser(string email)
{
return GetOnlineUsers.Save(email);
}
Next I created the following classes in the Data Repository class: GetOnlineUsers
public static class GetOnlineUsers
{
public static List<OnlineUser> GetAll()
{
using (var db = new CEntities())
{
return db.OnlineUsers.ToList();
}
}
public static OnlineUser Get(string email)
{
using (var db = new CEntities())
{
return db.OnlineUsers.Where(x => x.Email == email).FirstOrDefault();
}
}
public static List<OnlineUser> Save(string email)
{
using (var db = new CEntities())
{
var doesUserExist = db.OnlineUsers.Where(x => x.Email.ToLower() == email.ToLower()).FirstOrDefault();
if (doesUserExist != null)
{
doesUserExist.Created = DateTime.Now;
db.SaveChanges();
}
else
{
OnlineUser newUser = new OnlineUser();
newUser.Guid = Guid.NewGuid();
newUser.Email = email;
newUser.Created = DateTime.Now;
db.OnlineUsers.Add(newUser);
db.SaveChanges();
}
return GetAll();
}
}
public static void Delete(OnlineUser onlineUser)
{
using (var db = new CEntities())
{
var doesUserExist = db.OnlineUsers.Where(x => x.Email.ToLower() == onlineUser.Email.ToLower()).FirstOrDefault();
if (doesUserExist != null)
{
db.OnlineUsers.Remove(doesUserExist);
db.SaveChanges();
}
}
}
}
In the Global.asax
protected void Application_EndRequest()
{
// load all active users
var loggedInUsers = GetOnlineUsers.GetAll();
// read cookie
if (Context.Request.Cookies[Constants.USER_SESSION] != null)
{
// the cookie has the email
string email = Context.Request.Cookies[Constants.USER_SESSION].ToString();
// send the user's email to the save method in the repository
// notice in the save methos it also updates the time if the user already exist
loggedInUsers = GetOnlineUsers.Save(email);
}
// lets see we want to clear the list for inactive users
if (loggedInUsers != null)
{
foreach (var user in loggedInUsers)
{
// I am giving the user 10 minutes to interact with the site.
// if the user interaction date and time is greater than 10 minutes, removing the user from the list of active user
if (user.Created < DateTime.Now.AddMinutes(-10))
{
GetOnlineUsers.Delete(user);
}
}
}
}
In one of the controllers (You can create a new one up to you) that inhering from the AuthController, create the following method:
public JsonResult GetLastLoggedInUserDate()
{
string email = Session[Constants.USER_SESSION].ToString();
var user = GetOnlineUsers.Get(email);
return Json(new { year = user.Created.Year,
month = user.Created.Month,
day = user.Created.Day,
hours = user.Created.Hour,
minutes = user.Created.Minute,
seconds = user.Created.Second,
milliseconds = user.Created.Millisecond
}, JsonRequestBehavior.AllowGet);
}
In your _Layout.cshtml file at the very bottom place this Javascript code: This Javascript code will call the GetLastLoggedInUserDate() above to get the last interacted date from the database.
<script>
var lastInteracted, DifferenceInMinutes;
$(window).on('load', function (event) {
$.get("get-last-interaction-date", function (data, status) {
lastInteracted = new Date(data.year.toString() + "/" + data.month.toString() + "/" + data.day.toString() + " " + data.hours.toString() + ":" + data.minutes.toString() + ":" + data.seconds.toString());
});
});
$(window).on('mousemove', function (event) {
var now = new Date();
DifferenceInMinutes = (now.getTime() - lastInteracted.getTime()) / 60000;
if (DifferenceInMinutes > 5) {
$.get("get-last-interaction-date", function (data, status) {
lastInteracted = new Date(data.year.toString() + "/" + data.month.toString() + "/" + data.day.toString() + " " + data.hours.toString() + ":" + data.minutes.toString() + ":" + data.seconds.toString());
});
}
});
</script>
JavaScript explanation:
On page load I am are setting the last datetime the the user interacted with my website.
Since I cannot track what the user stares at on the screen, the next closest thing to real interaction is mouse movement.
So when the user moves the mouse anywhere on the page the following happens:
I compare the last interacted date with the current date.
Then I check if 5 minutes passed since the last updated date occurred.
Since the user happened to love the website and decided to spend more time on it, after the 5 minutes are passed, I send another request to the this method in my controller GetLastLoggedInUserDate() to get the date again. But before we get the date we will execute the OnActionExecuting method which will then update the records Created date and will return the current time. The lastInteracted gets the updated date and we go again.
The idea here is that when the user is not interacting with my website he is not really online for me. Maybe he has 100 tabs open and playing games doing other things but interacting with my website it is possible that they will not even realize they have it open in days or months depends on how often they reboot the PC. In any case I think that 10 minutes is a good threshold to work with but feel free to change it.
Finally AdminController class:
public ActionResult Index()
{
DashboardViewModel model = new DashboardViewModel();
// loading the list of online users to the dashboard
model.LoggedInUsers = GetOnlineUsers.GetAll();
return View("Index", "~/Views/Shared/_adminLayout.cshtml", model);
}
Index.cshtml (admin dashboard page)
#model ILOJC.Models.Admin.DashboardViewModel
#{
ViewBag.Menu1 = "Dashboard";
}
/// some html element and styles
<h5 class="">#Model.LoggedInUsers.Count() Online Users</h5>
<div class="row">
#foreach (var user in Model.LoggedInUsers.OrderByDescending(x => x.Created))
{
<div class="col-md-12">
<h5>#user.Email</h5>
<p><span>Last Inreaction Time: #user.Created.ToString("MM/dd/yyyy hh:mm:ss tt")</span></p>
</div>
}
</div>
Since the original table will only store online users I wanted to have a bit of history/log so I create a history table in the database:
CREATE TABLE [dbo].[OnlineUserHistory](
[ID] [int] IDENTITY(1,1) NOT NULL,
[OnlineUserID] [int] NOT NULL,
[Guid] [uniqueidentifier] NOT NULL,
[Email] [nvarchar](500) NOT NULL,
[Created] [datetime] NOT NULL,
[Updated] [datetime] NOT NULL,
[Operation] [char](3) NOT NULL,
CONSTRAINT [PK_OnlineUserLog] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
Lastly, I created a database Trigger on insert and delete
CREATE TRIGGER [dbo].[trg_online_user_history]
ON [dbo].[OnlineUser]
AFTER INSERT, DELETE
AS
BEGIN
SET NOCOUNT ON;
INSERT INTO OnlineUserHistory(
OnlineUserID,
[Guid],
Email,
Created,
Updated,
Operation
)
SELECT
i.ID,
i.[Guid],
i.Email,
i.Created,
GETDATE(),
'INS'
FROM
inserted i
UNION ALL
SELECT
d.ID,
d.[Guid],
d.Email,
d.Created,
GETDATE(),
'DEL'
FROM
deleted d;
END
Hope this can hep someone. One thing I would improve tho is the way the online users are displaying load in the dashboard. Now, I need to refresh the page to see the updated number. But if you want to see it live, you just add the SignalR library then create a hub and you good to go!