for Push.

InBox/LineFilterUxer.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace KssSmaPlaLib.InBox
+{
+    public class LineFilterUxer : IFilterUxer<string>
+    {
+        private readonly HashSet<string> includedLines;
+        private readonly HashSet<string> excludedLines;
+
+        public LineFilterUxer(IEnumerable<string> included, IEnumerable<string> excluded)
+        {
+            includedLines = new HashSet<string>(included ?? Enumerable.Empty<string>());
+            excludedLines = new HashSet<string>(excluded ?? Enumerable.Empty<string>());
+        }
+
+        public IEnumerable<string> ApplyFilter(IEnumerable<string> lineNames)
+        {
+            if (includedLines.Any())
+            {
+                // Included優先 → lineNamesの中でincludedに含まれるものだけ返す
+                return lineNames.Where(name => includedLines.Contains(name));
+            }
+
+            // Excluded適用 → lineNamesの中でexcludedに含まれないものだけ返す
+            return lineNames.Where(name => !excludedLines.Contains(name));
+        }
+
+        public bool CanPass(string lineName)
+        {
+            return HasAnyPass(new[] { lineName });
+        }
+
+        public bool HasAnyPass(IEnumerable<string> candidates)
+        {
+            return ApplyFilter(candidates).Any();
+        }
+    }
+}