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Yes.Application/Admins/Themes/UpdateThemeFileCommandHandler.cs

@@ -0,0 +1,31 @@
+namespace Yes.Application.Admins.Themes
+{
+    public record UpdateThemeFileCommand(
+           string ThemeName,
+           string FileName,
+           string Content
+    ) : IRequest<Unit>;
+
+
+    public class UpdateThemeFileCommandHandler(
+        IThemeService  themeService, 
+        IWebHostEnvironment env
+    ) : IRequestHandler<UpdateThemeFileCommand, Unit>
+    {
+        private readonly IThemeService _themeService = themeService;
+        private readonly IWebHostEnvironment _env = env;
+        public async Task<Unit> Handle(UpdateThemeFileCommand request, CancellationToken cancellationToken)
+        {
+            var themeName = request.ThemeName;
+            var fileName = request.FileName;
+            var content = request.Content;
+            _themeService.CheckThemeExists(themeName);
+            var filePath = Path.Combine(_env.ContentRootPath, "files", "themes", themeName, fileName);
+            if (File.Exists(filePath))
+            {
+                File.WriteAllText(filePath, content);
+            }
+            return new Unit();
+        }
+    }
+}