nixcfg/homeManagerModules/defaultApps.nix

{
  config,
  lib,
  pkgs,
  ...
}: {
  config = let
    cfg = config.ar.home.defaultApps;
    inherit
      (import ./mimetypes.nix)
      audioFiles
      browserFiles
      documentFiles
      editorFiles
      imageFiles
      videoFiles
      ;
  in
    lib.mkIf cfg.enable {
      dconf = {
        enable = true;
        settings = {
          "org/cinnamon/desktop/applications/terminal".exec = "${lib.getExe cfg.terminal}";
          "org/cinnamon/desktop/default-applications/terminal".exec = "${lib.getExe cfg.terminal}";
        };
      };

      home = {
        packages = with cfg; [
          audioPlayer
          editor
          fileManager
          imageViewer
          pdfViewer
          terminal
          terminalEditor
          videoPlayer
          webBrowser
        ];

        sessionVariables = {
          BROWSER = "${lib.getExe cfg.webBrowser}";
          EDITOR = "${lib.getExe cfg.terminalEditor}";
          TERMINAL = "${lib.getExe cfg.terminal}";
        };
      };

      xdg = {
        mimeApps = {
          enable = true;

          defaultApplications = let
            mkDefaults = files: desktopFile: lib.genAttrs files (_: [desktopFile]);
            audioTypes =
              mkDefaults audioFiles
              "defaultAudioPlayer.desktop";

            browserTypes =
              mkDefaults browserFiles
              "defaultWebBrowser.desktop";

            documentTypes =
              mkDefaults documentFiles
              "defaultPdfViewer.desktop";

            editorTypes =
              mkDefaults editorFiles
              "defaultEditor.desktop";

            folderTypes = {"inode/directory" = "defaultFileManager.desktop";};

            imageTypes =
              mkDefaults imageFiles
              "defaultImageViewer.desktop";

            videoTypes =
              mkDefaults videoFiles
              "defaultVideoPlayer.desktop";
          in
            audioTypes
            // browserTypes
            // documentTypes
            // editorTypes
            // folderTypes
            // imageTypes
            // videoTypes;
        };

        desktopEntries = let
          mkDefaultEntry = name: package: {
            name = "Default ${name}";
            exec = "${lib.getExe package} %U";
            terminal = false;
            settings = {
              NoDisplay = "true";
            };
          };
        in {
          defaultAudioPlayer = mkDefaultEntry "Audio Player" cfg.audioPlayer;
          defaultEditor = mkDefaultEntry "Editor" cfg.editor;
          defaultFileManager = mkDefaultEntry "File Manager" cfg.fileManager;
          defaultImageViewer = mkDefaultEntry "Image Viewer" cfg.imageViewer;
          defaultPdfViewer = mkDefaultEntry "PDF Viewer" cfg.pdfViewer;
          defaultVideoPlayer = mkDefaultEntry "Video Player" cfg.videoPlayer;
          defaultWebBrowser = mkDefaultEntry "Web Browser" cfg.webBrowser;
        };
      };
    };
}