Restructure solution layout by module

src/Concelier/__Libraries/StellaOps.Concelier.Connector.Distro.Ubuntu/Configuration/UbuntuOptions.cs

@@ -0,0 +1,69 @@
+using System;
+
+namespace StellaOps.Concelier.Connector.Distro.Ubuntu.Configuration;
+
+public sealed class UbuntuOptions
+{
+    public const string HttpClientName = "concelier.ubuntu";
+    public const int MaxPageSize = 20;
+
+    /// <summary>
+    /// Endpoint exposing the rolling JSON index of Ubuntu Security Notices.
+    /// </summary>
+    public Uri NoticesEndpoint { get; set; } = new("https://ubuntu.com/security/notices.json");
+
+    /// <summary>
+    /// Base URI where individual notice detail pages live.
+    /// </summary>
+    public Uri NoticeDetailBaseUri { get; set; } = new("https://ubuntu.com/security/");
+
+    public TimeSpan FetchTimeout { get; set; } = TimeSpan.FromSeconds(45);
+
+    public TimeSpan InitialBackfill { get; set; } = TimeSpan.FromDays(30);
+
+    public TimeSpan ResumeOverlap { get; set; } = TimeSpan.FromDays(3);
+
+    public int MaxNoticesPerFetch { get; set; } = 60;
+
+    public int IndexPageSize { get; set; } = 20;
+
+    public string UserAgent { get; set; } = "StellaOps.Concelier.Ubuntu/0.1 (+https://stella-ops.org)";
+
+    public void Validate()
+    {
+        if (NoticesEndpoint is null || !NoticesEndpoint.IsAbsoluteUri)
+        {
+            throw new InvalidOperationException("Ubuntu notices endpoint must be an absolute URI.");
+        }
+
+        if (NoticeDetailBaseUri is null || !NoticeDetailBaseUri.IsAbsoluteUri)
+        {
+            throw new InvalidOperationException("Ubuntu notice detail base URI must be an absolute URI.");
+        }
+
+        if (MaxNoticesPerFetch <= 0 || MaxNoticesPerFetch > 200)
+        {
+            throw new InvalidOperationException("MaxNoticesPerFetch must be between 1 and 200.");
+        }
+
+        if (FetchTimeout <= TimeSpan.Zero || FetchTimeout > TimeSpan.FromMinutes(5))
+        {
+            throw new InvalidOperationException("FetchTimeout must be positive and less than five minutes.");
+        }
+
+        if (InitialBackfill < TimeSpan.Zero || InitialBackfill > TimeSpan.FromDays(365))
+        {
+            throw new InvalidOperationException("InitialBackfill must be between 0 and 365 days.");
+        }
+
+        if (ResumeOverlap < TimeSpan.Zero || ResumeOverlap > TimeSpan.FromDays(14))
+        {
+            throw new InvalidOperationException("ResumeOverlap must be between 0 and 14 days.");
+        }
+
+        if (IndexPageSize <= 0 || IndexPageSize > MaxPageSize)
+        {
+            throw new InvalidOperationException($"IndexPageSize must be between 1 and {MaxPageSize}.");
+        }
+    }
+}