# Modules used by most systems.

{ config, lib, pkgs, home-manager, ... }:

with lib; with types;
let themeType =
        let named = submodule {
                options = {
                    normal = mkOption { type = str; };
                    bright = mkOption { type = str; };
                    pastel = mkOption { type = str; };
                };
            };
            special = submodule {
                options = {
                    primary = mkOption { type = str; };
                    normal = mkOption { type = str; };
                    slight = mkOption { type = str; };
                };
            };
        in submodule {
            options = {
                foreground = mkOption { type = special; };
                background = mkOption { type = special; };
                grayscales = mkOption { type = listOf str; };
                red        = mkOption { type = named; };
                green      = mkOption { type = named; };
                blue       = mkOption { type = named; };
                yellow     = mkOption { type = named; };
                purple     = mkOption { type = named; };
                cyan       = mkOption { type = named; };
                pink       = mkOption { type = named; };
                orange     = mkOption { type = named; };
                misc       = mkOption { type = attrsOf str; };
                hex        = mkOption { type = themeType; };
            };
        };

in {

    options.riley = with lib; {

        theme = mkOption {
            type = themeType;
            description = ''
                The theme used across the installation. Not used if gui is disabled.
            '';
        };

    };

    options.devices = mkOption {
        type = with types; submodule {
            options = {

                audio = mkOption {
                    type = nullOr (submodule {
                        options = {
                            speakers = mkOption { type = str; };
                            external = mkOption { type = str; };
                            headset  = mkOption { type = nullOr str; };
                            main-mic = mkOption { type = nullOr str; };
                        };
                    });
                    description = ''
                        Known audio devices: outputs & microphones.
                        Each string should be a pulseaudio sink or source.
                    '';
                };

                video = mkOption {
                    type = submodule {
                        options = {
                            displays = let output = submodule {
                                options = {
                                    primary = mkOption {
                                        type = bool;
                                        default = false;
                                    };
                                    position = mkOption {
                                        type = nullOr (listOf int);
                                        default = null;
                                    };
                                    rotate = mkOption {
                                        type = enum [ "normal" "left" "right" "inverted" ];
                                        default = "normal";
                                    };
                                };
                            }; in mkOption {
                                type = attrsOf output;
                                description = ''
                                    A list of outputs with information on how to place them.
                                '';
                            };
                        };
                    };
                    description = ''
                        Define the video devices (just the displays, for now).
                    '';
                };

            };
        };
    };


    imports = [

        home-manager.nixosModule

        ./kak
        ./gui

        ./fonts.nix
        ./git.nix
        ./ssh.nix

    ];
    
    config = {

        riley.theme = (import ../colors.nix)."dark";

        time.timeZone = "Europe/Amsterdam";

        home-manager.useGlobalPkgs = true;
        home-manager.useUserPackages = true;

        environment.systemPackages = with pkgs; [

            # Web utils

            wget
            curl
            git

        ];

        environment.shellAliases = {

            # Born to VIM
            ":q" = "exit";

            # Sike I use kakoune
            ":e" = "kak";

            # Launch [T]erminal
            "t" = "alacritty";

            # [D]isown
            "d" = "disown";

        };

        programs.bash.interactiveShellInit = ''

            # [G]o to the directory. Create the directory if it does not exist
            # yet, and if the directory contains a shell.nix file, source it.
            g () {
                [ -d "$1" ] || mkdir -p "$1";
                cd "$1";
                [ -e "shell.nix" ] && nix-shell;
            }

            # [M]ake a directory and immediately enter it.
            m () { mkdir -p "$1" && cd "$1"; }

            # [R]eplace the current process with the given one.
            r () { $1 & disown; exit; }

            # [J]ump to the directory by means of fuzzy search. If the fuzzy finder
            # is aborted, the jump is also aborted.
            j () { t=`sk` && cd $t; }

            # Enter a temporary [d]irectory.
            d () { cd "$(mktemp -d)"; }

        '';

        boot = {
            loader.systemd-boot = {
                enable = true;
                editor = false;
                configurationLimit = 10;
            };

            loader.efi = {
                canTouchEfiVariables = true;
            };
        };

        networking = {
            firewall.enable = false;
            useDHCP = false;
        };

        security.rtkit.enable = true;

        users.users."riley" = {
            isNormalUser = true;
            extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
        };

    };
}