From 6e88380fea63a0dd0a0c79cde6eaedc172d5daaf Mon Sep 17 00:00:00 2001
From: Michael DiLeo <michael_dileo@proton.me>
Date: Thu, 6 Aug 2026 13:40:07 -0500
Subject: [PATCH] add the stats endpoint

---
 dotnet/SafelyYou/Program.cs     | 18 +++++++++++++++++-
 dotnet/SafelyYou/UploadTimes.cs |  6 ++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/dotnet/SafelyYou/Program.cs b/dotnet/SafelyYou/Program.cs
index 831578c..228779f 100644
--- a/dotnet/SafelyYou/Program.cs
+++ b/dotnet/SafelyYou/Program.cs
@@ -69,8 +69,24 @@ app.MapPost("/devices/{deviceId}/stats", (string deviceId, UploadStatsRequest re
     return Results.NoContent();
     
     // not sure where the 500 would go here beyond doing a try/catch
-}); 
+});
 
+app.MapGet("/devices/{deviceId}/stats", (string deviceId, KnownDevices knownDevices, HeartBeatHistories histories, UploadTimes uploadTimes) =>
+{
+    var device = new DeviceId(deviceId);
+    if (!knownDevices.Contains(device))
+    {
+        return Results.NotFound(new NotFoundResponse($"Device ID {deviceId} not found"));
+    }
+
+    var averageUploadTimeNanos = uploadTimes.AverageUploadTimeNanoseconds(device);
+    var timeSpanText = TimeSpan.FromTicks((long)(averageUploadTimeNanos / 100)).ToString(@"m\ms\s"); // loses accuracy on the Go nanos for this text conversion
+    var uptime = histories.Uptime(device);
+    
+    return Results.Ok(new GetDeviceStatsResponse(timeSpanText, uptime));
+    
+    // no 500 here
+});
 
 
 app.Run();
diff --git a/dotnet/SafelyYou/UploadTimes.cs b/dotnet/SafelyYou/UploadTimes.cs
index a89e500..04599f8 100644
--- a/dotnet/SafelyYou/UploadTimes.cs
+++ b/dotnet/SafelyYou/UploadTimes.cs
@@ -16,4 +16,10 @@ public sealed class UploadTimes
 
         _uploadHistories[deviceId] = (history.TotalUploadTime + uploadTimeNanos, history.UploadCounts + 1);
     }
+
+    public BigInteger AverageUploadTimeNanoseconds(DeviceId deviceId)
+    {
+        if (!_uploadHistories.TryGetValue(deviceId, out var history)) return BigInteger.Zero;
+        return history.TotalUploadTime / history.UploadCounts;
+    }
 }
\ No newline at end of file