Better notes and bans (#14228)

Co-authored-by: Chief-Engineer <119664036+Chief-Engineer@users.noreply.github.com>

Content.Server/Administration/Notes/AdminMessageEui.cs

@@ -0,0 +1,63 @@
+using Content.Server.Database;
+using Content.Server.EUI;
+using Content.Shared.Administration.Notes;
+using Content.Shared.CCVar;
+using Content.Shared.Eui;
+using Robust.Shared.Configuration;
+using static Content.Shared.Administration.Notes.AdminMessageEuiMsg;
+
+namespace Content.Server.Administration.Notes;
+
+public sealed class AdminMessageEui : BaseEui
+{
+    [Dependency] private readonly IAdminNotesManager _notesMan = default!;
+    [Dependency] private readonly IConfigurationManager _cfg = default!;
+    private readonly float _closeWait;
+    private AdminMessage? _message;
+    private DateTime _startTime;
+
+    public AdminMessageEui()
+    {
+        IoCManager.InjectDependencies(this);
+        _closeWait = _cfg.GetCVar(CCVars.MessageWaitTime);
+    }
+
+    public void SetMessage(AdminMessage message)
+    {
+        _message = message;
+        _startTime = DateTime.UtcNow;
+        StateDirty();
+    }
+
+    public override EuiStateBase GetNewState()
+    {
+        if (_message == null)
+            return new AdminMessageEuiState(float.MaxValue, "An error has occurred.", string.Empty, DateTime.MinValue);
+        return new AdminMessageEuiState(
+            _closeWait,
+            _message.Message,
+            _message.CreatedBy?.LastSeenUserName ?? "[System]",
+            _message.CreatedAt
+        );
+    }
+
+    public override async void HandleMessage(EuiMessageBase msg)
+    {
+        base.HandleMessage(msg);
+
+        switch (msg)
+        {
+            case Accept:
+                if (_message == null)
+                    break;
+                // No escape
+                if (DateTime.UtcNow - _startTime >= TimeSpan.FromSeconds(_closeWait))
+                    await _notesMan.MarkMessageAsSeen(_message.Id);
+                Close();
+                break;
+            case Dismiss:
+                Close();
+                break;
+        }
+    }
+}