Refactor code structure for improved readability and maintainability

dotnet/src/TwitchArchive.Tests/FileManagerServiceTests.cs

@@ -0,0 +1,38 @@
+using System;
+using System.IO;
+using Xunit;
+using TwitchArchive.Core.Services;
+
+namespace TwitchArchive.Tests
+{
+    public class FileManagerServiceTests : IDisposable
+    {
+        private readonly string _root;
+
+        public FileManagerServiceTests()
+        {
+            _root = Path.Combine(Path.GetTempPath(), "ta_fm_" + Guid.NewGuid().ToString("N"));
+        }
+
+        [Fact]
+        public void EnsureDirectories_CreatesPaths_And_GetUniquePath_AppendsSuffix()
+        {
+            var svc = new FileManagerService(_root);
+            var paths = svc.GetPaths("alice");
+            svc.EnsureDirectories(paths);
+            Assert.True(Directory.Exists(paths.RawPath));
+            Assert.True(Directory.Exists(paths.VideoPath));
+
+            var file = Path.Combine(paths.RawPath, "file.ts");
+            File.WriteAllText(file, "x");
+            var unique = svc.GetUniqueFilePath(file);
+            Assert.NotEqual(file, unique);
+            Assert.Contains("file-", Path.GetFileName(unique));
+        }
+
+        public void Dispose()
+        {
+            try { Directory.Delete(_root, true); } catch { }
+        }
+    }
+}