Added export to word function for the chat (#566)

app/MindWork AI Studio/Tools/Services/RustService.FileSystem.cs

@@ -35,4 +35,31 @@ public sealed partial class RustService
         
         return await result.Content.ReadFromJsonAsync<FileSelectionResponse>(this.jsonRustSerializerOptions);
     }
+
+    /// <summary>
+    /// Initiates a dialog to let the user select a file for a writing operation.
+    /// </summary>
+    /// <param name="title">The title of the save file dialog.</param>
+    /// <param name="filter">An optional file type filter for filtering specific file formats.</param>
+    /// <param name="initialFile">An optional initial file path to pre-fill in the dialog.</param>
+    /// <returns>A <see cref="FileSaveResponse"/> object containing information about whether the user canceled the
+    /// operation and whether the select operation was successful.</returns>
+    public async Task<FileSaveResponse> SaveFile(string title, FileTypeFilter? filter = null, string? initialFile = null)
+    {
+        var payload = new SaveFileOptions
+        {
+            Title = title,
+            PreviousFile = initialFile is null ? null : new (initialFile),
+            Filter = filter
+        };
+        
+        var result = await this.http.PostAsJsonAsync("/save/file", payload, this.jsonRustSerializerOptions);
+        if (!result.IsSuccessStatusCode)
+        {
+            this.logger!.LogError($"Failed to select a file for writing operation '{result.StatusCode}'");
+            return new FileSaveResponse(true, string.Empty);
+        }
+        
+        return await result.Content.ReadFromJsonAsync<FileSaveResponse>(this.jsonRustSerializerOptions);
+    }
 }