nixos-config/users/simon/modules/youtube-dl.nix

# SPDX-FileCopyrightText: 2021-2023 Simon Bruder <simon@sbruder.de>
#
# SPDX-License-Identifier: AGPL-3.0-or-later

{ lib, pkgs, ... }:
let
  # zAudioFormat because a better video format is preferred and
  # cartesianProductOfSets cycles through the attributes in lexicographic order
  formats = (map
    ({ videoFormat, zAudioFormat }: "${videoFormat}+${zAudioFormat}")
    (lib.cartesianProductOfSets {
      videoFormat = [ "bestvideo[vcodec^=av01]" "bestvideo[vcodec^=vp09]" "bestvideo[vcodec^=avc1]" "bestvideo" ];
      zAudioFormat = [ "bestaudio[acodec^=opus]" "bestaudio[acodec^=mp4a]" "bestaudio" ];
    })) ++ [ "best" ];

  options = {
    format = lib.concatStringsSep "/" formats;
  };

  textConfig = lib.concatStringsSep
    "\n"
    (lib.mapAttrsToList
      (k: v: "--${k} ${v}")
      options);
in
{
  xdg.configFile = {
    "youtube-dl/config".text = textConfig;
    "yt-dlp/config".text = textConfig;
  };

  home.packages = with pkgs; [
    youtube-dl
    unstable.yt-dlp
  ];
}