refactor(EnvelopeController): simplify EnvelopeController actions and view handling

- Added overload of CreateShowEnvelopeView(EnvelopeReceiverDto) to remove redundant id parsing logic
- Refactored EnvelopeLocked action to receive EnvelopeReceiverDto directly instead of fetching inside
- Centralized ViewData assignments for cleaner envelope rendering
- Improved error logging to include envelope UUID and receiver signature where applicable
- Adjusted EnvelopeLocked GET to return explicit "EnvelopeLocked" view for unauthenticated users

EnvelopeGenerator.Web/Controllers/EnvelopeController.cs

@@ -59,6 +59,8 @@ public class EnvelopeController : ViewControllerBase
     {
         try
         {
+            ViewData["EnvelopeKey"] = envelopeReceiverId;
+
             if (!envelopeReceiverId.TryDecode(out var decoded))
             {
                 Response.StatusCode = StatusCodes.Status401Unauthorized;
@@ -119,12 +121,10 @@ public class EnvelopeController : ViewControllerBase
 
     [HttpGet("{envelopeReceiverId}/Locked")]
     [Obsolete("Use DigitalData.Core.Exceptions and .Middleware")]
-    public async Task<IActionResult> EnvelopeLocked([FromRoute] string envelopeReceiverId, CancellationToken cancel)
+    public async Task<IActionResult> EnvelopeLocked(EnvelopeReceiverDto er, CancellationToken cancel)
     {
         try
         {
-            var er = await _mediator.ReadEnvelopeReceiverAsync(envelopeReceiverId, cancel);
-
             if (er is null)
             {
                 Response.StatusCode = StatusCodes.Status401Unauthorized;
@@ -132,24 +132,44 @@ public class EnvelopeController : ViewControllerBase
             }
 
             if (User.IsInRole(ReceiverRole.FullyAuth))
-                return await CreateShowEnvelopeView(envelopeReceiverId, er);
+                return await CreateShowEnvelopeView(er);
             else
             {
-                ViewData["EnvelopeKey"] = envelopeReceiverId;
                 ViewData["TFAEnabled"] = er.Envelope!.TFAEnabled;
                 ViewData["HasPhoneNumber"] = er.HasPhoneNumber;
                 ViewData["SenderEmail"] = er.Envelope.User!.Email;
                 ViewData["EnvelopeTitle"] = er.Envelope.Title;
-                return View();
+                return View("EnvelopeLocked");
             }
         }
         catch(Exception ex)
         {
-            _logger.LogEnvelopeError(envelopeReceiverId: envelopeReceiverId, exception: ex);
+            _logger.LogEnvelopeError(uuid: er.Envelope?.Uuid, er.Receiver!.Signature, exception: ex);
             return this.ViewInnerServiceError();
         }
     }
 
+    [Obsolete("Use MediatR")]
+    private async Task<IActionResult> CreateShowEnvelopeView(EnvelopeReceiverDto er)
+    {
+        if (er.Envelope!.Documents?.FirstOrDefault() is DocumentDto doc && doc.ByteData is not null)
+        {
+            ViewData["DocumentBytes"] = doc.ByteData;
+        }
+        else
+        {
+            _logger.LogEnvelopeError(uuid: er.Envelope.Uuid, er.Receiver?.Signature, message: "No document byte-data was found in ENVELOPE_DOCUMENT table.");
+            return this.ViewDocumentNotFound();
+        }
+
+        await HttpContext.SignInEnvelopeAsync(er, ReceiverRole.FullyAuth);
+
+        //add PSPDFKit licence key
+        ViewData["PSPDFKitLicenseKey"] = _configuration["PSPDFKitLicenseKey"];
+
+        return View("ShowEnvelope", er);
+    }
+
     [Obsolete("Use MediatR")]
     private async Task<IActionResult> CreateShowEnvelopeView(string envelopeReceiverId, EnvelopeReceiverDto er)
     {