// Copyright 2026 DeepMind Technologies Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef MUJOCO_SRC_EXPERIMENTAL_PLATFORM_FILE_DIALOG_H_
#define MUJOCO_SRC_EXPERIMENTAL_PLATFORM_FILE_DIALOG_H_

#include <span>
#include <string>
#include <string_view>

namespace mujoco::platform {

// Result returned by various file dialog functions.
struct DialogResult {
  // The status of the dialog.
  enum Status {
    // The dialog is still open.
    kPending,
    // A file/folder was selected.
    kAccepted,
    // The dialog was dismissed.
    kCancelled,
    // An error occurred.
    kError,
  };

  // The status of the dialog.
  Status status = kPending;

  // The path selected by the dialog if Status is kAccepted. If status is
  // kError, the path may contain an error message. Empty otherwise.
  std::string path;
};

// Opens a file dialog used for selecting a file to open.
DialogResult OpenFileDialog(std::string_view path,
                            std::span<std::string_view> filters = {});

// Opens a file dialog used for selecting a file to save.
DialogResult SaveFileDialog(std::string_view path,
                            std::span<std::string_view> filters = {});

// Opens a file dialog used for selecting a folder.
DialogResult SelectPathDialog(std::string_view path);

}  // namespace mujoco::platform

#endif  // MUJOCO_SRC_EXPERIMENTAL_PLATFORM_FILE_DIALOG_H_