{pkgs, lib, config, system, ...}:
let inherit (builtins.extraBuiltins) pass;
    inherit (lib) types;
    inherit (config) networking;
    inherit (config.services) dovecot2;
    userPass = name: pass "${networking.domainBase}/${networking.hostName}/login/${name}";
in {
imports = [
  <nixpkgs-commonsoft/install/modules.nix>
  ../overlays/tools/networking/shorewall/service.nix
  ../overlays/tools/networking/shorewall6/service.nix
  ../overlays/servers/mail/rspamd/service.nix
  friot/dovecot.nix
  friot/gitolite.nix
  friot/nginx.nix
  friot/nsd.nix
  friot/postfix.nix
  friot/postgrey.nix
  friot/postgresql.nix
  #friot/rmilter.nix
  friot/rspamd.nix
  #friot/redmine.nix
  friot/shorewall.nix
  friot/openldap.nix
  #friot/discourse.nix
];
options = {
  enable = lib.mkEnableOption "friot";
  networking.domainBase = lib.mkOption {
    type        = types.str;
    description = "Base network name.";
    example     = "example";
  };
  networking.domainAliases = lib.mkOption {
    type        = types.listOf types.str;
    description = "Domain aliases.";
    example     = [ "example.org" "example.net" ];
  };
  networking.zones = lib.mkOption {
    type = types.attrsOf (types.submodule ({name, options, config, ...}: {
      options = {
        iface = lib.mkOption {
          type        = types.str;
          description = "Interface name.";
          example     = "eth0";
        };
        ipv4 = lib.mkOption {
          type        = types.str;
          description = "Static IPv4 address of the machine.";
          example     = "1.2.3.4";
        };
        ipv6 = lib.mkOption {
          type        = types.str;
          description = "Static IPv6 address of the machine.";
          example     = "fe80::1";
        };
      };
    }));
  };
};
config = {
  nix = {
    extraOptions = ''
      auto-optimise-store = true
    '';
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 30d";
    };
  };

  nixpkgs = {
    config = {
      allowUnfree = false;
      packageOverrides = pkgs: {
        postfix = pkgs.postfix.override {
          withLDAP = true;
        };
      };
    };
    overlays = import ../overlays.nix;
  };

  boot = {
    initrd = {
      network = {
        enable = config.deployment.targetEnv != "virtualbox";
        ssh = {
          enable = true;
          authorizedKeys = [ (pass "${networking.domain}/ssh/pub/julm") ];
        };
      };
    };
    kernel = {
      sysctl = {
        "vm.swappiness" = 10;
        "vm.vfs_cache_pressure" = 50;
      };
    };
  };

  time = {
    timeZone = "Europe/Paris";
  };

  i18n = {
    consoleFont   = "Lat2-Terminus16";
    consoleKeyMap = "fr";
    defaultLocale = "fr_FR.UTF-8";
  };

  networking = {
    domainBase    = "commonsoft";
    domain        = "${networking.domainBase}.org";
    domainAliases = [
     "${networking.domainBase}.net"
     "${networking.domainBase}.coop"
    ];
  };

  users = {
    mutableUsers = false;
    users = {
        root.initialPassword = userPass "root";
        root.password        = config.users.users.root.initialPassword;
        julm = {
          uid             = 1000;
          extraGroups     = [ "sudo" ];
          description     = "Julien Moutinho";
          home            = "/home/julm";
          shell           = lib.mkDefault config.users.defaultUserShell;
          group           = "users"; # FIXME: unknown group
          initialPassword = userPass "julm";
          password        = config.users.users.julm.initialPassword;
        };
    };
    groups = {
      julm = {
        gid = config.users.users.julm.uid;
      };
    };
  };

  documentation.nixos = {
    enable = false; # NOTE: useless on this machine, and CPU intensive.
  };

  services = {
    redis = {
      enable = true;
    };
    disnix = {
      enable = false;
    };
    openssh = {
      enable = true;
      extraConfig = ''
      '';
    };
    gitea = {
      enable = false;
    };
    sssd = {
      enable = false;
    };
    dovecot2 = {
      #debug = true;
    };
    journald = {
      extraConfig = ''
        SystemMaxUse=50M
      '';
    };
    x509 = {
      domains =
        lib.concatMap
         (dom: map (sub: "${sub}.${dom}")
           ["www" "git" "mail"])
         ([networking.domain] ++ networking.domainAliases)
        ++ networking.domainAliases;
    };
    #postfix.aliases = {
    #        "root@${networking.domain}" = [ "test@${networking.domain}" ];
    #  "postmaster@${networking.domain}" = [ "test@${networking.domain}" ];
    #       "abuse@${networking.domain}" = [ "test@${networking.domain}" ];
    #};
    #dovecot2.domains = {
    #  "${networking.domain}" = {
    #    accounts = {
    #      julm = {
    #        password = pass "${networking.domain}/mail/julm";
    #         # "${networking.domain}/dovecot2/julm";
    #           #  "{SSHA512}uyjL1KYx4z7HpfNvnKzuVxpMLD2KVueGGBvOcj7AF1EZCTVhT++IIKUVOC4xpZtWdqVD0OVmZqgYr2qpn/3t3Aj4oU0=";
    #        aliases  = ["julien.moutinho@${networking.domain}"];
    #        quota    = "512M";
    #      };
    #      test = {
    #        password = pass "${networking.domain}/mail/test";
    #         # "${networking.domain}/dovecot2/test";
    #           #  "{SSHA512}uyjL1KYx4z7HpfNvnKzuVxpMLD2KVueGGBvOcj7AF1EZCTVhT++IIKUVOC4xpZtWdqVD0OVmZqgYr2qpn/3t3Aj4oU0=";
    #        aliases  = ["test-alias@${networking.domain}"];
    #        quota    = "512M";
    #      };
    #    };
    #  };
    #};
  };

  environment = {
    systemPackages = with pkgs; [
      htop
      tree
      vim
      tcpdump
      #mysql
      #procmail
      postgrey
      duplicity
      pypolicyd-spf
      unbound
      dropbear
      cryptsetup
      openssl
      postgresql
      openldap
      #mail
      #sympa
      multitail
      dnsutils
      inetutils
      binutils
      mailutils
      ncdu
      cgit
      #sssd
      #docker
      #nss_ldap
      #nss_pam_ldapd
      tmux
      socat
      users-init
      which
    ];
    etc."inputrc".text = ''
      # /etc/inputrc - global inputrc for libreadline
      # See readline(3readline) and `info rluserman' for more information.

      # Be 8 bit clean.
      set input-meta on
      set output-meta on

      # To allow the use of 8bit-characters like the german umlauts, uncomment
      # the line below. However this makes the meta key not work as a meta key,
      # which is annoying to those which don't need to type in 8-bit characters.

      # set convert-meta off

      # try to enable the application keypad when it is called.  Some systems
      # need this to enable the arrow keys.
      # set enable-keypad on

      # see /usr/share/doc/bash/inputrc.arrows for other codes of arrow keys

      # do not bell on tab-completion
      # set bell-style none
      # set bell-style visible

      # some defaults / modifications for the emacs mode
      $if mode=emacs

      # allow the use of the Home/End keys
      "\e[1~": beginning-of-line
      "\e[4~": end-of-line

      # allow the use of the Delete/Insert keys
      "\e[3~": delete-char
      "\e[2~": quoted-insert

      # mappings for "page up" and "page down" to step to the beginning/end
      # of the history
      # "\e[5~": beginning-of-history
      # "\e[6~": end-of-history

      # alternate mappings for "page up" and "page down" to search the history
      # "\e[5~": history-search-backward
      # "\e[6~": history-search-forward

      # mappings for Ctrl-left-arrow and Ctrl-right-arrow for word moving
      "\e[1;5C": forward-word
      "\e[1;5D": backward-word
      "\e[5C": forward-word
      "\e[5D": backward-word
      "\e\e[C": forward-word
      "\e\e[D": backward-word

      $if term=rxvt
      "\e[7~": beginning-of-line
      "\e[8~": end-of-line
      "\eOc": forward-word
      "\eOd": backward-word
      $endif

      # for non RH/Debian xterm, can't hurt for RH/Debian xterm
      # "\eOH": beginning-of-line
      # "\eOF": end-of-line

      # for freebsd console
      # "\e[H": beginning-of-line
      # "\e[F": end-of-line

      $endif
    '';
  };

  programs = {
    bash = {
      interactiveShellInit = ''
        bind '"\e[A":history-search-backward'
        bind '"\e[B":history-search-forward'
        
        # Ignore duplicate commands, ignore commands starting with a space
        export HISTCONTROL=erasedups:ignorespace
        export HISTSIZE=42000
        # Append to the history instead of overwriting (good for multiple connections)
        shopt -s histappend
      '';
      shellAliases = {
        cl = "clear";
        l  = "ls -alh";
        ll = "ls -l";
        ls = "ls --color=tty";
    
        s="sudo systemctl";
        s-u="systemctl --user";
        
        nix-clean="sudo nix-collect-garbage -d";
        nix-history="sudo nix-env --list-generations --profile /nix/var/nix/profiles/system";
        nix-rollback="sudo nixos-rebuild switch --rollback";
        nix-update="sudo nix-channel --update";
        nix-upgrade="sudo nixos-rebuild switch";
        nix-upstream="sudo nix-channel --list";
        nix-config="gvim ~/.config/nixos/*.nix";
      };
    };
  
    /*
    dconf.enable = true;
  
    gnupg.agent = {
      enable = true;
      enableSSHSupport = true;
    };
    */
  
    mtr.enable = true;
  };
};
}