1 files changed, 52 insertions, 0 deletions
diff --git a/src/Publishing/SleetFeedManager.cs b/src/Publishing/SleetFeedManager.cs
new file mode 100644
index 0000000..997dcf2
--- /dev/null
+++ b/src/Publishing/SleetFeedManager.cs
@@ -0,0 +1,52 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.Text.Json;
+using VNLib.Tools.Build.Executor.Model;
+
+namespace VNLib.Tools.Build.Executor.Publishing
+{
+    internal sealed class SleetFeedManager : IFeedManager
+    {
+        private readonly string SleetConfigFile;
+
+        ///<inheritdoc/>
+        public string FeedOutputDir { get; }
+
+        private SleetFeedManager(string indexFilex, string outputDir)
+        {
+            //Search for the sleet file in the build dir
+            SleetConfigFile = indexFilex;
+            FeedOutputDir = outputDir;
+        }
+
+        ///<inheritdoc/>
+        public void AddVariables(TaskfileVars vars)
+        {
+            vars.Set("SLEET_DIR", FeedOutputDir);
+            vars.Set("SLEET_CONFIG_PATH", SleetConfigFile);
+        }
+
+        /// <summary>
+        /// Attempts to create a new sleet feed manager from the given directory index
+        /// if the index contains a sleet feed. Returns null if no sleet feed was found
+        /// </summary>
+        /// <returns>The feed manager if found, null otherwise</returns>
+        /// <exception cref="FileNotFoundException"></exception>
+        /// <exception cref="ArgumentException"></exception>
+        [return: NotNullIfNotNull(nameof(feedPath))]
+        public static IFeedManager? GetSleetFeed(string? feedPath)
+        {
+            if (string.IsNullOrWhiteSpace(feedPath))
+            {
+                return null;
+            }
+
+            //Read the sleet config file
+            byte[] sleetIndexFile = File.ReadAllBytes(feedPath);
+            using JsonDocument doc = JsonDocument.Parse(sleetIndexFile);
+            string rootDir = doc.RootElement.GetProperty("root").GetString() ?? throw new ArgumentException("The sleet output directory was not specified");
+            return new SleetFeedManager(feedPath, rootDir);
+        }
+    }
+}
+\ No newline at end of file