{ config, lib, pkgs, ... }:

let
  inherit (lib) mkIf;
  mkIfCaskPresent = cask: mkIf (lib.any (x: x == cask) config.homebrew.casks);
  brewEnabled = config.homebrew.enable;
in

{
  environment.shellInit = mkIf brewEnabled ''
    eval "$(${config.homebrew.brewPrefix}/brew shellenv)"
  '';

  # https://docs.brew.sh/Shell-Completion#configuring-completions-in-fish
  # For some reason if the Fish completions are added at the end of `fish_complete_path` they don't
  # seem to work, but they do work if added at the start.
  programs.fish.interactiveShellInit = mkIf brewEnabled ''
    if test -d (brew --prefix)"/share/fish/completions"
      set -p fish_complete_path (brew --prefix)/share/fish/completions
    end
    if test -d (brew --prefix)"/share/fish/vendor_completions.d"
      set -p fish_complete_path (brew --prefix)/share/fish/vendor_completions.d
    end
  '';

  homebrew.enable = true;
  homebrew.autoUpdate = true;
  homebrew.cleanup = "zap";
  homebrew.global.brewfile = true;
  homebrew.global.noLock = true;

  homebrew.taps = [
    "homebrew/cask"
    "homebrew/cask-drivers"
    "homebrew/cask-fonts"
    "homebrew/cask-versions"
    "homebrew/core"
    "homebrew/services"
    "nrlquaker/createzap"
    "unisonweb/unison"
  ];

  # Prefer installing application from the Mac App Store
  homebrew.masApps = {
    Bitwarden = 1352778147;
    Spark = 1176895641;
  };

  # If an app isn't available in the Mac App Store, or the version in the App Store has
  # limitiations, e.g., Transmit, install the Homebrew Cask.
  homebrew.casks = [
    "aerial"
    "alfred"
    "discord"
    "element"
    "firefox"
    "gog-galaxy"
    "knockknock"
    "lagrange"
    "lulu"
    "rectangle"
    "signal"
    "steam"
    "unison-language"
    "vscodium"
  ];

  # Configuration related to casks
  environment.variables.SSH_AUTH_SOCK = mkIfCaskPresent "secretive"
    "/Users/${config.users.primaryUser}/Library/Containers/com.maxgoedjen.Secretive.SecretAgent/Data/socket.ssh";

  # For cli packages that aren't currently available for macOS in `nixpkgs`.Packages should be
  # installed in `../home/default.nix` whenever possible.
  homebrew.brews = [ ];
}