stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Provcache.Api/ProvcacheEndpointExtensions.GetInputManifest.cs

@@ -0,0 +1,69 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+
+namespace StellaOps.Provcache.Api;
+
+public static partial class ProvcacheEndpointExtensions
+{
+    /// <summary>
+    /// GET /v1/provcache/{veriKey}/manifest
+    /// </summary>
+    private static async Task<IResult> GetInputManifestAsync(
+        string veriKey,
+        IProvcacheService provcacheService,
+        TimeProvider timeProvider,
+        ILogger<ProvcacheApiEndpoints> logger,
+        CancellationToken cancellationToken)
+    {
+        logger.LogDebug("GET /v1/provcache/{VeriKey}/manifest", veriKey);
+
+        try
+        {
+            // First get the entry to verify it exists
+            var result = await provcacheService.GetAsync(veriKey, bypassCache: false, cancellationToken);
+
+            if (result.Status == ProvcacheResultStatus.CacheMiss)
+            {
+                return Results.NotFound(new ProblemDetails
+                {
+                    Title = "Entry not found",
+                    Detail = $"No cache entry found for VeriKey: {veriKey}",
+                    Status = StatusCodes.Status404NotFound
+                });
+            }
+
+            if (result.Status == ProvcacheResultStatus.Expired)
+            {
+                return Results.NotFound(new ProblemDetails
+                {
+                    Title = "Entry expired",
+                    Detail = $"Cache entry for VeriKey '{veriKey}' has expired",
+                    Status = StatusCodes.Status404NotFound
+                });
+            }
+
+            var entry = result.Entry;
+            if (entry is null)
+            {
+                return Results.NotFound(new ProblemDetails
+                {
+                    Title = "Entry not found",
+                    Detail = $"No cache entry found for VeriKey: {veriKey}",
+                    Status = StatusCodes.Status404NotFound
+                });
+            }
+
+            // Build the input manifest from the entry metadata
+            // In a full implementation, we'd resolve these hashes to more detailed metadata
+            // from their respective stores (SBOM store, VEX store, policy registry, etc.)
+            var manifest = BuildInputManifest(entry, timeProvider);
+
+            return Results.Ok(manifest);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "Error getting input manifest for VeriKey {VeriKey}", veriKey);
+            return InternalError("Manifest retrieval failed");
+        }
+    }
+}