text: /*
   * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "CharacterMapFileListModel.h"
  #include <AK/JsonObject.h>
  #include <AK/QuickSort.h>
  #include <LibCore/ArgsParser.h>
  #include <LibCore/DirIterator.h>
  #include <LibCore/File.h>
  #include <LibGUI/AboutDialog.h>
  #include <LibGUI/Action.h>
  #include <LibGUI/Application.h>
  #include <LibGUI/BoxLayout.h>
  #include <LibGUI/Button.h>
  #include <LibGUI/ComboBox.h>
  #include <LibGUI/Label.h>
  #include <LibGUI/Menu.h>
  #include <LibGUI/MenuBar.h>
  #include <LibGUI/MessageBox.h>
  #include <LibGUI/WindowServerConnection.h>
  #include <LibKeyboard/CharacterMap.h>
  #include <spawn.h>
  
  int main(int argc, char** argv)
  {
      if (pledge("stdio rpath accept cpath wpath shared_buffer unix fattr proc exec", nullptr) < 0) {
          perror("pledge");
          return 1;
      }
  
      // If there is no command line parameter go for GUI.
      auto app = GUI::Application::construct(argc, argv);
  
      if (pledge("stdio rpath accept shared_buffer proc exec", nullptr) < 0) {
          perror("pledge");
          return 1;
      }
  
      if (unveil("/res", "r") < 0) {
          perror("unveil");
          return 1;
      }
  
      if (unveil("/bin/keymap", "x") < 0) {
          perror("unveil");
          return 1;
      }
  
      if (unveil("/proc/keymap", "r") < 0) {
          perror("unveil");
          return 1;
      }
  
      if (unveil(nullptr, nullptr)) {
          perror("unveil");
          return 1;
      }
  
      auto app_icon = GUI::Icon::default_icon("app-keyboard-settings");
  
      auto proc_keymap = Core::File::construct("/proc/keymap");
      if (!proc_keymap->open(Core::IODevice::OpenMode::ReadOnly))
          ASSERT_NOT_REACHED();
  
      auto json = JsonValue::from_string(proc_keymap->read_all());
      ASSERT(json.has_value());
      JsonObject keymap_object = json.value().as_object();
      ASSERT(keymap_object.has("keymap"));
      String current_keymap = keymap_object.get("keymap").to_string();
      dbgln("KeyboardSettings thinks the current keymap is: {}", current_keymap);
  
      Vector<String> character_map_files;
      Core::DirIterator iterator("/res/keymaps/", Core::DirIterator::Flags::SkipDots);
      if (iterator.has_error()) {
          GUI::MessageBox::show(nullptr, String::formatted("Error on reading mapping file list: {}", iterator.error_string()), "Keyboard settings", GUI::MessageBox::Type::Error);
          return -1;
      }
  
      while (iterator.has_next()) {
          auto name = iterator.next_path();
          name.replace(".json", "");
          character_map_files.append(name);
      }
      quick_sort(character_map_files);
  
      size_t initial_keymap_index = SIZE_MAX;
      for (size_t i = 0; i < character_map_files.size(); ++i) {
          if (character_map_files[i].equals_ignoring_case(current_keymap))
              initial_keymap_index = i;
      }
      ASSERT(initial_keymap_index < character_map_files.size());
  
      auto window = GUI::Window::construct();
      window->set_title("Keyboard settings");
      window->resize(300, 70);
      window->set_icon(app_icon.bitmap_for_size(16));
  
      auto& root_widget = window->set_main_widget<GUI::Widget>();
      root_widget.set_layout<GUI::VerticalBoxLayout>();
      root_widget.set_fill_with_background_color(true);
      root_widget.layout()->set_spacing(0);
      root_widget.layout()->set_margins({ 4, 4, 4, 4 });
  
      auto& character_map_file_selection_container = root_widget.add<GUI::Widget>();
      character_map_file_selection_container.set_layout<GUI::HorizontalBoxLayout>();
      character_map_file_selection_container.set_fixed_height(22);
  
      auto& character_map_file_label = character_map_file_selection_container.add<GUI::Label>();
      character_map_file_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
      character_map_file_label.set_fixed_width(130);
      character_map_file_label.set_text("Character Mapping File:");
  
      auto& character_map_file_combo = character_map_file_selection_container.add<GUI::ComboBox>();
      character_map_file_combo.set_only_allow_values_from_model(true);
      character_map_file_combo.set_model(*CharacterMapFileListModel::create(character_map_files));
      character_map_file_combo.set_selected_index(initial_keymap_index);
  
      root_widget.layout()->add_spacer();
  
      auto apply_settings = [&](bool quit) {
          String character_map_file = character_map_file_combo.text();
          if (character_map_file.is_empty()) {
              GUI::MessageBox::show(window, "Please select character mapping file.", "Keyboard settings", GUI::MessageBox::Type::Error);
              return;
          }
          pid_t child_pid;
          const char* argv[] = { "/bin/keymap", character_map_file.characters(), nullptr };
          if ((errno = posix_spawn(&child_pid, "/bin/keymap", nullptr, nullptr, const_cast<char**>(argv), environ))) {
              perror("posix_spawn");
              exit(1);
          }
          if (quit)
              app->quit();
      };
  
      auto& bottom_widget = root_widget.add<GUI::Widget>();
      bottom_widget.set_layout<GUI::HorizontalBoxLayout>();
      bottom_widget.layout()->add_spacer();
      bottom_widget.set_fixed_height(22);
  
      auto& apply_button = bottom_widget.add<GUI::Button>();
      apply_button.set_text("Apply");
      apply_button.set_fixed_width(60);
      apply_button.on_click = [&](auto) {
          apply_settings(false);
      };
  
      auto& ok_button = bottom_widget.add<GUI::Button>();
      ok_button.set_text("OK");
      ok_button.set_fixed_width(60);
      ok_button.on_click = [&](auto) {
          apply_settings(true);
      };
  
      auto& cancel_button = bottom_widget.add<GUI::Button>();
      cancel_button.set_text("Cancel");
      cancel_button.set_fixed_width(60);
      cancel_button.on_click = [&](auto) {
          app->quit();
      };
  
      auto quit_action = GUI::CommonActions::make_quit_action(
          [&](auto&) {
              app->quit();
          });
  
      auto about_action = GUI::Action::create("About",
          [&](auto&) {
              GUI::AboutDialog::show("Keyboard settings", app_icon.bitmap_for_size(32), window);
          });
  
      auto menubar = GUI::MenuBar::construct();
  
      auto& app_menu = menubar->add_menu("Keyboard settings");
      app_menu.add_action(quit_action);
  
      auto& help_menu = menubar->add_menu("Help");
      help_menu.add_action(about_action);
  
      app->set_menubar(move(menubar));
  
      window->show();
  
      return app->exec();
  }
  