Repository: usememos/memos
File: server/system.go (Go)

Code before:
		systemSettingList, err := s.Store.FindSystemSettingList(ctx, &api.SystemSettingFind{})
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find system setting list").SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(composeResponse(systemSettingList)); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to encode system setting list response").SetInternal(err)
		}
		return nil
	})

	g.POST("/system/vacuum", func(c echo.Context) error {
		ctx := c.Request().Context()
		systemStatus := api.SystemStatus{
			DBSize: 0,
		}
		userID, ok := c.Get(getUserIDContextKey()).(int)
		if ok {
			user, err := s.Store.FindUser(ctx, &api.UserFind{
				ID: &userID,
			})
			if err != nil {
				return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find user").SetInternal(err)
			}
			if user != nil && user.Role == api.Host {
				if err := s.Store.Vacuum(ctx); err != nil {
					return echo.NewHTTPError(http.StatusInternalServerError, "Failed to vacuum database").SetInternal(err)
				}

				fi, err := os.Stat(s.Profile.DSN)
				if err != nil {
					return echo.NewHTTPError(http.StatusInternalServerError, "Failed to read database fileinfo").SetInternal(err)
				}
				systemStatus.DBSize = fi.Size()
			}
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(composeResponse(systemStatus)); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to encode system setting list response").SetInternal(err)
		}
		return nil
	})
}


Review comment (suggestion):
```
if user == nil || user.Role != api.Host {
  // throw error
}
```

Code after:
		systemSettingList, err := s.Store.FindSystemSettingList(ctx, &api.SystemSettingFind{})
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find system setting list").SetInternal(err)
		}

		c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSONCharsetUTF8)
		if err := json.NewEncoder(c.Response().Writer).Encode(composeResponse(systemSettingList)); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to encode system setting list response").SetInternal(err)
		}
		return nil
	})

	g.POST("/system/vacuum", func(c echo.Context) error {
		ctx := c.Request().Context()
		userID, ok := c.Get(getUserIDContextKey()).(int)
		if !ok {
			return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
		}
		user, err := s.Store.FindUser(ctx, &api.UserFind{
			ID: &userID,
		})
		if err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find user").SetInternal(err)
		}
		if user == nil || user.Role != api.Host {
			return echo.NewHTTPError(http.StatusUnauthorized, "Unauthorized")
		}
		if err := s.Store.Vacuum(ctx); err != nil {
			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to vacuum database").SetInternal(err)
		}
		c.Response().WriteHeader(http.StatusOK)
		return nil
	})
}