big refactoring. get rid of static properties and coupled architecture. prepare system for integration tests

Azaion.Test/InMemoryFileSystem.cs

@@ -0,0 +1,67 @@
+using System.IO;
+using Azaion.Common.Services;
+
+namespace Azaion.Test;
+
+public class InMemoryFileSystem : IFileSystem
+{
+    private readonly Dictionary<string, byte[]> _files = new();
+    private readonly HashSet<string> _directories = new();
+
+    public Task<byte[]> ReadAllBytesAsync(string path, CancellationToken ct = default)
+    {
+        if (!_files.TryGetValue(path, out var content))
+            throw new FileNotFoundException($"File not found: {path}");
+        return Task.FromResult(content);
+    }
+
+    public Task WriteAllBytesAsync(string path, byte[] content, CancellationToken ct = default)
+    {
+        _files[path] = content;
+        var directory = Path.GetDirectoryName(path);
+        if (directory != null)
+            _directories.Add(directory);
+        return Task.CompletedTask;
+    }
+
+    public bool FileExists(string path)
+    {
+        return _files.ContainsKey(path);
+    }
+
+    public void DeleteFile(string path)
+    {
+        _files.Remove(path);
+    }
+
+    public IEnumerable<string> GetFiles(string directory, string searchPattern)
+    {
+        var pattern = searchPattern.Replace("*", ".*").Replace("?", ".");
+        var regex = new System.Text.RegularExpressions.Regex(pattern);
+        return _files.Keys.Where(f => Path.GetDirectoryName(f) == directory && regex.IsMatch(Path.GetFileName(f)));
+    }
+
+    public IEnumerable<FileInfo> GetFileInfos(string directory, string[] searchPatterns)
+    {
+        var files = searchPatterns.SelectMany(pattern => GetFiles(directory, pattern));
+        return files.Select(f => new FileInfo(f));
+    }
+
+    public DirectoryInfo GetDirectoryInfo(string path)
+    {
+        if (!_directories.Contains(path))
+            _directories.Add(path);
+        return new DirectoryInfo(path);
+    }
+
+    public bool DirectoryExists(string path)
+    {
+        return _directories.Contains(path);
+    }
+
+    public void CreateDirectory(string path)
+    {
+        _directories.Add(path);
+    }
+}
+