feat: ImageSotrage clear

GSS2.Core/Hardware/ImageStorageService.cs

@@ -26,6 +26,7 @@ public class ImageStorageService
     {
         var fileName = GenerateFileName(extension);
         var fullPath = GetFullPath(fileName, subDirectory);
+        System.Diagnostics.Debug.Assert(fullPath is not null);
 
         var directory = Path.GetDirectoryName(fullPath)!;
         Directory.CreateDirectory(directory);
@@ -45,20 +46,25 @@ public class ImageStorageService
         return fileName;
     }
 
-    public Stream OpenRead(string fileName, string subDirectory)
+    public Stream OpenRead(string fileName, string? subDirectory = null)
     {
         var fullPath = GetFullPath(fileName, subDirectory);
+        if (fullPath is null)
+            throw new FileNotFoundException(null, fullPath);
         return new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read);
     }
 
-    public bool Delete(string fileName, string subDirectory)
+    public bool Delete(string fileName, string? subDirectory = null)
     {
         var fullPath = GetFullPath(fileName, subDirectory);
+        if (fullPath is null)
+            throw new FileNotFoundException(null, fullPath);
 
         if (!File.Exists(fullPath))
             return false;
 
         File.Delete(fullPath);
+        _logger.LogInformation("File removed: {}", fileName);
         return true;
     }
 
@@ -68,11 +74,29 @@ public class ImageStorageService
         return $"{guid}{extension}";
     }
 
-    public string GetFullPath(string fileName, string subDirectory)
+    public string? GetFullPath(string fileName, string? subDirectory = null)
     {
         var level1 = fileName.Substring(0, 2);
         var level2 = fileName.Substring(2, 2);
 
-        return Path.Combine(_rootDirectory.FullName, subDirectory, level1, level2, fileName);
+        if (subDirectory is not null)
+            return Path.Combine(_rootDirectory.FullName, subDirectory, level1, level2, fileName);
+
+        return ListFiles()
+            .FirstOrDefault(File.Exists);
+    }
+
+    public List<string> ListFiles(string? subDirectory = null)
+    {
+        if (subDirectory is not null)
+            return Directory.GetDirectories(Path.Join(_rootDirectory.FullName, subDirectory))
+                .SelectMany(Directory.GetDirectories)
+                .SelectMany(Directory.GetFiles)
+                .ToList();
+
+        return Directory.GetDirectories(_rootDirectory.FullName)
+            .Select(Path.GetFileName)
+            .SelectMany(ListFiles)
+            .ToList();
     }
 }