modules/common/xdg.nix


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{
  config,
  lib,
  this,
  ...
}:
with lib;
let
  cfg = config.nixfiles.modules.common.xdg;
in
{
  imports =
    let
      withBase = a: [
        "nixfiles"
        "modules"
        "common"
        "xdg"
        a
      ];
    in
    [
      (mkAliasOptionModule [
        "dirs"
        "cache"
      ] (withBase "cacheHome"))
      (mkAliasOptionModule [
        "dirs"
        "config"
      ] (withBase "configHome"))
      (mkAliasOptionModule [
        "dirs"
        "data"
      ] (withBase "dataHome"))
      (mkAliasOptionModule [
        "dirs"
        "state"
      ] (withBase "stateHome"))
      (mkAliasOptionModule [ "userDirs" ] (withBase "userDirs"))
    ];

  options.nixfiles.modules.common.xdg = {
    cacheHome = mkOption {
      type = types.str;
      default = "${config.hm.home.homeDirectory}/.cache";
    };
    configHome = mkOption {
      type = types.str;
      default = "${config.hm.home.homeDirectory}/.config";
    };
    dataHome = mkOption {
      type = types.str;
      default = "${config.hm.home.homeDirectory}/.local/share";
    };
    stateHome = mkOption {
      type = types.str;
      default = "${config.hm.home.homeDirectory}/.local/state";
    };
    userDirs = mkOption {
      type = types.attrs;
      default =
        let
          inherit (config.my) home;
          tmp = home + "/tmp";
        in
        {
          enable = true;

          desktop = tmp;
          documents = "${home}/doc";
          download = tmp;
          music = tmp;
          pictures = tmp;
          publicShare = "${home}/share";
          templates = tmp;
          videos = tmp;
        };
    };
    defaultApplications = mkOption {
      description = "Default applications.";
      type = with types; attrsOf (listOf str);
      default = { };
    };
  };

  config = {
    xdg.portal = mkIf this.isHeadful { enable = true; };

    hm.xdg = mkMerge [
      (with cfg; {
        enable = true;

        inherit cacheHome;
        inherit configHome;
        inherit dataHome;
        inherit stateHome;
        inherit userDirs;
      })
      (mkIf this.isHeadful {
        mimeApps = {
          enable = true;
          defaultApplications = mkMerge (
            mapAttrsToList (n: v: genAttrs v (_: [ "${n}.desktop" ])) cfg.defaultApplications
          );
        };
      })
    ];
  };
}