Adjust file storage hard-coded logic.

src/Infrastructure/BotSharp.Abstraction/Files/IBotSharpFileService.cs

@@ -1,3 +1,5 @@
+using System.IO;
+
 namespace BotSharp.Abstraction.Files;
 
 public interface IBotSharpFileService
@@ -74,5 +76,7 @@ public interface IBotSharpFileService
     (string, byte[]) GetFileInfoFromData(string data);
     string GetDirectory(string conversationId);
     string GetFileContentType(string filePath);
+    byte[] GetFileBytes(string fileStorageUrl);
+    bool SavefileToPath(string filePath, Stream stream);
     #endregion
 }

src/Infrastructure/BotSharp.Core/Files/Services/BotSharpFileService.Common.cs

@@ -43,4 +43,21 @@ public partial class BotSharpFileService
 
         return contentType;
     }
+
+    public byte[] GetFileBytes(string fileStorageUrl)
+    {
+        using var stream = File.OpenRead(fileStorageUrl);
+        var bytes = new byte[stream.Length];
+        stream.Read(bytes, 0, (int)stream.Length);
+        return bytes;
+    }
+
+    public bool SavefileToPath(string filePath, Stream stream)
+    {
+        using (var fileStream = new FileStream(filePath, FileMode.Create))
+        {
+            stream.CopyTo(fileStream);
+        }
+        return true;
+    }
 }

src/Infrastructure/BotSharp.OpenAPI/Controllers/ConversationController.cs

@@ -356,10 +356,7 @@ public class ConversationController : ControllerBase
                 var fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
                 var filePath = Path.Combine(dir, fileName);
 
-                using (var stream = new FileStream(filePath, FileMode.Create))
-                {
-                    file.CopyTo(stream);
-                }
+                fileService.SavefileToPath(filePath, file.OpenReadStream());
             }
 
             return Ok(new { message = "File uploaded successfully." });

src/Infrastructure/BotSharp.OpenAPI/Controllers/UserController.cs

@@ -158,9 +158,8 @@ public class UserController : ControllerBase
     #region Private methods
     private FileContentResult BuildFileResult(string file)
     {
-        using Stream stream = System.IO.File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read);
-        var bytes = new byte[stream.Length];
-        stream.Read(bytes, 0, (int)stream.Length);
+        var fileService = _services.GetRequiredService<IBotSharpFileService>();
+        var bytes = fileService.GetFileBytes(file);
         return File(bytes, "application/octet-stream", Path.GetFileName(file));
     }
     #endregion