updated RtcOffer to reflect proper communication needs and added todo

RelayServer/Endpoints/RtcEndpoints.cs

@@ -15,7 +15,7 @@ public static class RtcEndpoints
         // Store or update the current SDP offer for a channel call.
         app.MapPost("/api/rtc/offer", async (RtcOffer request, RtcCallService rtcCallService) =>
         {
-            await rtcCallService.WriteOfferAsync(request.ChannelId, request.Username, request.Sdp);
+            await rtcCallService.WriteOfferAsync(request.ChannelId, request.Username, request.SessionDescription);
             return Results.Ok();
         });
 
@@ -29,7 +29,7 @@ public static class RtcEndpoints
         app.MapGet("/api/rtc/active/{channelId}", async (string channelId, RtcCallService rtcCallService) =>
         {
             var call = await rtcCallService.GetActiveCallAsync(channelId);
-            return call is null ? Results.NotFound() : Results.Ok(call);
+            return call is null ? Results.NotFound() : Results.Ok(call); //TODO: needs to return a true or false value if the channelId is active
         });
 
         // Return the latest stored SDP offer for the specified channel.

RelayServer/Models/Rtc/RtcOffer.cs

@@ -6,7 +6,9 @@ public class RtcOffer : Record
 {
     public required string ChannelId { get; set; }
     public required string Username { get; set; }
-    public required string Sdp { get; set; }
+    public required RtcSessionDescription SessionDescription { get; set; }
+    // public required string Type { get; set; }
+    // public required string Sdp { get; set; }
     public DateTime CreatedAt { get; set; }
     public DateTime UpdatedAt { get; set; }
 }

RelayServer/Services/Rtc/RtcCallService.cs

@@ -41,8 +41,9 @@ public sealed class RtcCallService
     /// </summary>
     /// <param name="channelId">The channel the offer belongs to.</param>
     /// <param name="username">The user creating the offer.</param>
+    /// <param name="type">The RtcSession Type. </param>
     /// <param name="sdp">The SDP offer payload.</param>
-    public async Task WriteOfferAsync(string channelId, string username, string sdp)
+    public async Task WriteOfferAsync(string channelId, string username, RtcSessionDescription sessionDescription)
     {
         var activeCalls = await _db.Select<RtcActiveCall>("rtc_active_calls");
         var activeCall = activeCalls.FirstOrDefault(x => x.ChannelId == channelId && x.IsActive);
@@ -55,8 +56,8 @@ public sealed class RtcCallService
                 OfferUser = username,
                 Offer = new RtcSessionDescription
                 {
-                    Type = "offer",
-                    Sdp = sdp
+                    Type = sessionDescription.Type,
+                    Sdp = sessionDescription.Sdp
                 },
                 Answer = null,
                 CreatedAt = DateTime.UtcNow,
@@ -70,8 +71,8 @@ public sealed class RtcCallService
         activeCall.OfferUser = username;
         activeCall.Offer = new RtcSessionDescription
         {
-            Type = "offer",
-            Sdp = sdp
+            Type = sessionDescription.Type,
+            Sdp = sessionDescription.Sdp
         };
         activeCall.UpdatedAt = DateTime.UtcNow;