server-configuration/configuration.nix

# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page, on
# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).

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

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware/samsehu.nix
    ];

  # Use the `systemd-boot` boot loader
  boot.loader.systemd-boot.enable = true;

  # Added following instructions of openzfs configuration
  # randomly generated with `head -c4 /dev/urandom | od -A none -t x4`
  networking.hostId = "3e52e44f"; 
  boot.supportedFilesystems = [ "zfs" ];
  boot.zfs.forceImportRoot = false;

  networking.hostName = "samsehu"; # Define your hostname.

  # Pick only one of the below networking options.
  networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.

  # Set your time zone.
  time.timeZone = "America/Denver";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";
  # console = {
  #   font = "Lat2-Terminus16";
  #   keyMap = "us";
  #   useXkbConfig = true; # use xkb.options in tty.
  # };

 
  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound.
  sound.enable = true;
  hardware.pulseaudio.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.geemili = {
    isNormalUser = true;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
    packages = with pkgs; [ ];
  };

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

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    helix
    wget
    git

    juanfont-headscale.headscale # install to allow debugging/control of headscale using the CLI
  ];

  environment.variables = {
    EDITOR = "hx";
    VISUAL = "hx";
  };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  services.openssh = {
    enable = true;
    settings.PasswordAuthentication = false;
    settings.KbdInteractiveAuthentication = false;
    settings.PermitRootLogin = "no";
  };

  services.cockpit = {
    enable = true;
    openFirewall = true;
    settings = {
      WebService = {
        Origins = "https://cockpit.samsehu.perli.casa wss://cockpit.samsehu.perli.casa";
        ProtocolHeader = "X-Forwarded-Proto";
        LoginTo = false;
      };
    };
  };

  services.udisks2.enable = true;

  services.jellyfin.enable = true;

  services.blocky = {
    enable = true;
    settings = {
      ports.dns = 53;
      ports.http = 4000;
      upstreams = {  
        # Picks 2 random resolvers and returns answer from fastest one. Read docs for more info.
        strategy = "parallel_best";
        groups.default = [
          # CloudFlare
          "https://one.one.one.one/dns-query"
          # OpenDNS
          "https://doh.opendns.com/dns-query"
          # Google
          "8.8.8.8"
          "8.8.4.4"
          "2001:4860:4860::8888"
          "2001:4860:4860::8844"
          # Comcast/Our ISP
          "75.75.75.75"
          "75.75.76.76"
        ];
      };
      bootstrapDns = {
        upstream = "https://one.one.one.one/dns-query";
        ips = [ "1.1.1.1" "1.0.0.1" ];
      };
      blocking = {
        blackLists = {
          ads = ["https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts"];
        };
        clientGroupsBlock = {
          default = [ "ads" ];
        };
      };
      customDNS = {
        rewrite = {
          "cockpit.samsehu.perli.casa" = "samsehu.perli.casa";
          "git.samsehu.perli.casa" = "samsehu.perli.casa";
          "nextcloud.samsehu.perli.casa" = "samsehu.perli.casa";
        };
        mapping = {
          "samsehu.perli.casa" = "192.168.0.69";
        };
      };
    };
  };

  services.forgejo = {
    enable = true;
    settings = {
      server.ROOT_URL = "https://git.samsehu.perli.casa/";
      server.HTTP_ADDR = "127.0.0.1";
    };
  };

  # lldap LDAP authentication server
  users.users.lldap = {
    # allocates the `uid` in the range 100-999, which indicates to software like login managers that it should not be displayed to the user.
    isSystemUser = true;
    group = "lldap";
  };
  users.groups.lldap = {};
  services.lldap = {
    enable = true;
    settings = {
      ldap_base_dn = "dc=twins,dc=pearson";
      # Sets the root administrator's user name
      ldap_user_dn = "admin";
      http_host = "127.0.0.1";
    };
    environment = {
      LLDAP_LDAP_USER_PASS_FILE = config.age.secrets.LLDAP_DEFAULT_ADMIN_PASSWORD.path;
    };
  };

  # Dynamic DNS through duck dns
  users.users.dynamicdns = {
    # allocates the `uid` in the range 100-999, which indicates to software like login managers that it should not be displayed to the user.
    isSystemUser = true;
    group = "dynamicdns";
  };
  users.groups.dynamicdns = {};
  systemd.services.dynamic-dns-updater = {
    serviceConfig.User = "dynamicdns";
    path = [ pkgs.curl ];
    script = "curl --silent --url-query domains=samsehuperli --url-query token@${config.age.secrets.samsehu_DUCK_DNS_TOKEN.path} https://www.duckdns.org/update";
    startAt = "hourly";
  };
  systemd.timers.dynamic-dns-updater = {
    timerConfig.RandomizedDelaySec = "15m";
  };

  # Next cloud setup
  services.nginx.enable = false;
  services.nextcloud = {
    enable = true;
    home = "/zroot/nextcloud";
    hostName = "nextcloud.samsehu.perli.casa";
    config.adminpassFile = "/var/nextcloud-admin-pass";
    config.trustedProxies = [
      "100.64.0.3"
    ];
    caching.apcu = true;

    # Auto update apps
    autoUpdateApps.enable = true;

    # Use postgres
    database.createLocally = true;
    config.dbtype = "pgsql";
    config.dbpassFile = "/var/nextcloud-db-pass";
  };
  services.phpfpm.pools.nextcloud.settings = {
    "listen.owner" = config.services.caddy.user;
    "listen.group" = config.services.caddy.group;
  };

  # Reverse proxy with Caddy
  services.caddy = {
    enable = true;
    globalConfig = ''
      # servers {
      #   protocols h1 h2
      # }
      email "fresh.car0178@geemili.xyz"
    '';

    virtualHosts."lldap.samsehu.perli.casa".extraConfig = ''
      bind 100.64.0.3
      reverse_proxy localhost:17170
    '';

    virtualHosts."headscale.samsehu.perli.casa".extraConfig = ''
      bind 100.64.0.3 192.168.0.69
      reverse_proxy localhost:64639
    '';

    virtualHosts."cockpit.samsehu.perli.casa".extraConfig = ''
      bind 100.64.0.3
      reverse_proxy localhost:9090
    '';

    virtualHosts."git.samsehu.perli.casa".extraConfig = ''
      bind 100.64.0.3 192.168.0.69
      reverse_proxy localhost:3000
    '';

    virtualHosts."jellyfin.samsehu.perli.casa".extraConfig = ''
      reverse_proxy localhost:8096
    '';

    virtualHosts."nextcloud.samsehu.perli.casa".extraConfig = ''
      bind 100.64.0.3

      # https://docs.nextcloud.com/server/27/admin_manual/issues/general_troubleshooting.html#service-discovery
      redir /.well-known/carddav /remote.php/dav 301
      redir /.well-known/caldav /remote.php/dav 301

      root * ${config.services.nextcloud.package}
      php_fastcgi unix/${config.services.phpfpm.pools.nextcloud.socket} {
        root ${config.services.nextcloud.package}
        capture_stderr
      }
      file_server
    '';
  };

  # Headscale for access to the network while away from home
  services.headscale = {
    enable = true;
    package = pkgs.juanfont-headscale.headscale;
    settings = {
      server_url = "https://headscale.samsehu.perli.casa";
      listen_addr = "127.0.0.1:64639";
      metrics_listen_addr = "127.0.0.1:64640";
      tls_cert_path = null;
      tls_key_path = null;

      dns_config = {
        nameservers = [ "100.64.0.3" ];
        magic_dns = true;
        base_domain = "ts.samsehu.perli.casa";
        restricted_nameservers = {
          "samsehu.perli.casa" = [ "100.64.0.3" ];
        };
        extra_records = [
          { name = "samsehu.perli.casa"; type = "A"; value = "100.64.0.3"; }
        ];
      };

      acl_policy_path = pkgs.writeText "acl_policy.hujson" ''
        {
          "groups": {
            "group:servers": [
              "samsehu",
            ],
            "group:admin": [
              "geemili",
              "desttinghim",
            ],
          },
          "acls": [
            {
              "action": "accept",
              "src": ["group:admin"],
              "dst": ["*:*"],
            }
          ],
          "ssh": [
            {
              "action": "accept",
              "src": ["group:admin"],
              "dst": ["group:servers"],
              "users": ["group:admin", "geemili", "desttinghim", "forgejo"],
            },
          ],
        }
      '';
    };
  };

  services.tailscale.enable = true;

  # Enable automatic upgrades
  system.autoUpgrade.enable = true;
  system.autoUpgrade.allowReboot = true;
  system.autoUpgrade.flake = "git+http://127.0.0.1:3000/Twins/server-configuration.git";

  # Enable automatic garbage collection
  nix.gc = {
    automatic = true;
    dates = "weekly";
    options = "--delete-older-than 30d";
  };

  nix.settings.trusted-users = [ "geemili" ];

  # Open ports in the firewall.
  networking.firewall.enable = true;
  networking.firewall.allowedTCPPorts = [
    # Blocky DNS
    53

    # Blocky API
    4000

    # Caddy HTTP and HTTPS
    80
    443
  ];
  networking.firewall.allowedUDPPorts = [
    # Blocky DNS
    53

    # mDNS
    5353

    # Headscale UDP port for STUN protocol
    3478
  ];

  # Use systemd-resolved and set networkmanager to allow mdns
  services.resolved = {
    enable = true;
    extraConfig = ''
      DNSStubListener=false
    '';
  };
  networking.networkmanager.connectionConfig."connection.mdns" = 2; # 2 == yes

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # system.copySystemConfiguration = true;

  # This option defines the first version of NixOS you have installed on this particular machine,
  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
  #
  # Most users should NEVER change this value after the initial install, for any reason,
  # even if you've upgraded your system to a new NixOS release.
  #
  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
  # so changing it will NOT upgrade your system.
  #
  # This value being lower than the current NixOS release does NOT mean your system is
  # out of date, out of support, or vulnerable.
  #
  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
  # and migrated your data accordingly.
  #
  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
  system.stateVersion = "23.11"; # Did you read the comment?

}