Rename Concelier Source modules to Connector

src/StellaOps.Concelier.Connector.Nvd/Configuration/NvdOptions.cs

@@ -0,0 +1,57 @@
+namespace StellaOps.Concelier.Connector.Nvd.Configuration;
+
+public sealed class NvdOptions
+{
+    /// <summary>
+    /// Name of the HttpClient registered for NVD fetches.
+    /// </summary>
+    public const string HttpClientName = "nvd";
+
+    /// <summary>
+    /// Base API endpoint for CVE feed queries.
+    /// </summary>
+    public Uri BaseEndpoint { get; set; } = new("https://services.nvd.nist.gov/rest/json/cves/2.0");
+
+    /// <summary>
+    /// Duration of each modified window fetch.
+    /// </summary>
+    public TimeSpan WindowSize { get; set; } = TimeSpan.FromHours(4);
+
+    /// <summary>
+    /// Overlap added when advancing the sliding window to cover upstream delays.
+    /// </summary>
+    public TimeSpan WindowOverlap { get; set; } = TimeSpan.FromMinutes(5);
+
+    /// <summary>
+    /// Maximum look-back period used when the connector first starts or state is empty.
+    /// </summary>
+    public TimeSpan InitialBackfill { get; set; } = TimeSpan.FromDays(7);
+
+    public void Validate()
+    {
+        if (BaseEndpoint is null)
+        {
+            throw new InvalidOperationException("NVD base endpoint must be configured.");
+        }
+
+        if (!BaseEndpoint.IsAbsoluteUri)
+        {
+            throw new InvalidOperationException("NVD base endpoint must be an absolute URI.");
+        }
+
+        if (WindowSize <= TimeSpan.Zero)
+        {
+            throw new InvalidOperationException("Window size must be positive.");
+        }
+
+        if (WindowOverlap < TimeSpan.Zero || WindowOverlap >= WindowSize)
+        {
+            throw new InvalidOperationException("Window overlap must be non-negative and less than the window size.");
+        }
+
+        if (InitialBackfill <= TimeSpan.Zero)
+        {
+            throw new InvalidOperationException("Initial backfill duration must be positive.");
+        }
+    }
+}