burrow/nixos/hosts/burrow-forge/default.nix

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

let
  contributors = import ../../../contributors.nix;
  identities = contributors.identities;
  stripNewline = value: lib.replaceStrings [ "\n" ] [ "" ] value;
  authentikPasswordSecretPath = identity:
    if identity ? authentikPasswordSecret
    then config.age.secrets.${identity.authentikPasswordSecret}.path
    else null;
  bootstrapUsers = lib.mapAttrsToList
    (
      username: identity: {
        inherit username;
        name = identity.displayName;
        email = identity.canonicalEmail;
        isAdmin = identity.isAdmin or false;
        passwordFile = authentikPasswordSecretPath identity;
      }
    )
    (lib.filterAttrs (_: identity: identity.bootstrapAuthentik or false) identities);
  headscaleBootstrapUsers = lib.mapAttrsToList
    (
      username: identity: {
        name = username;
        displayName = identity.displayName;
        email = identity.canonicalEmail;
      }
    )
    (lib.filterAttrs (_: identity: identity.bootstrapAuthentik or false) identities);
  forgeUnixUsernames =
    builtins.attrNames (lib.filterAttrs (_: identity: identity.forgeUnixUser or false) identities);
  forgeUnixUsers = lib.genAttrs forgeUnixUsernames (username:
    let
      identity = identities.${username};
      sshKeys = lib.optional (identity ? sshPublicKeyPath) (stripNewline (builtins.readFile identity.sshPublicKeyPath));
    in
    {
      isNormalUser = true;
      createHome = true;
      home = "/home/${username}";
      shell = pkgs.bashInteractive;
      extraGroups = lib.optional (identity.isAdmin or false) "wheel";
      openssh.authorizedKeys.keys = sshKeys;
    });
  forgeUnixAdminUsernames =
    builtins.attrNames (lib.filterAttrs (_: identity: (identity.forgeUnixUser or false) && (identity.isAdmin or false)) identities);
  forgeAuthorizedKeys = map
    (username: builtins.readFile identities.${username}.sshPublicKeyPath)
    (builtins.attrNames (lib.filterAttrs (_: identity: identity.forgeAuthorized or false) identities));
in

{
  imports = [
    ./hardware-configuration.nix
    ./disko-config.nix
    self.nixosModules.burrow-forge
    self.nixosModules.burrow-forge-runner
    self.nixosModules.burrow-forgejo-nsc
    self.nixosModules.burrow-authentik
    self.nixosModules.burrow-headscale
  ];

  system.stateVersion = "24.11";

  time.timeZone = "America/Los_Angeles";

  nix.settings.experimental-features = [
    "nix-command"
    "flakes"
  ];

  users.users = forgeUnixUsers;

  security.sudo.extraRules = lib.map (username: {
    users = [ username ];
    commands = [
      {
        command = "ALL";
        options = [ "NOPASSWD" ];
      }
    ];
  }) forgeUnixAdminUsernames;

  environment.systemPackages = lib.optionals config.services.forgejo-nsc.enable [
    self.packages.${pkgs.stdenv.hostPlatform.system}.nsc
  ];

  age.identityPaths = [ "/var/lib/agenix/agenix.key" ];
  age.secrets.burrowAuthentikEnv = {
    file = ../../../secrets/infra/authentik.env.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowHeadscaleOidcClientSecret = {
    file = ../../../secrets/infra/headscale-oidc-client-secret.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowForgejoOidcClientSecret = {
    file = ../../../secrets/infra/forgejo-oidc-client-secret.age;
    owner = "forgejo";
    group = "forgejo";
    mode = "0440";
  };
  age.secrets.burrowTailscaleOidcClientSecret = {
    file = ../../../secrets/infra/tailscale-oidc-client-secret.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowAuthentikGoogleClientId = {
    file = ../../../secrets/infra/authentik-google-client-id.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowAuthentikGoogleClientSecret = {
    file = ../../../secrets/infra/authentik-google-client-secret.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowAuthentikGoogleAccountMap = {
    file = ../../../secrets/infra/authentik-google-account-map.json.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowAuthentikUiTestPassword = {
    file = ../../../secrets/infra/authentik-ui-test-password.age;
    owner = "root";
    group = "root";
    mode = "0400";
  };
  age.secrets.burrowForgejoNscToken = {
    file = ../../../secrets/infra/forgejo-nsc-token.age;
    owner = "forgejo-nsc";
    group = "forgejo-nsc";
    mode = "0400";
  };
  age.secrets.burrowForgejoNscDispatcherConfig = {
    file = ../../../secrets/infra/forgejo-nsc-dispatcher-config.age;
    owner = "forgejo-nsc";
    group = "forgejo-nsc";
    mode = "0400";
  };
  age.secrets.burrowForgejoNscAutoscalerConfig = {
    file = ../../../secrets/infra/forgejo-nsc-autoscaler-config.age;
    owner = "forgejo-nsc";
    group = "forgejo-nsc";
    mode = "0400";
  };

  networking.extraHosts = ''
    127.0.0.1 burrow.net git.burrow.net auth.burrow.net ts.burrow.net nsc-autoscaler.burrow.net
    ::1 burrow.net git.burrow.net auth.burrow.net ts.burrow.net nsc-autoscaler.burrow.net
  '';

  services.burrow.forge = {
    enable = true;
    contactEmail = identities.contact.canonicalEmail;
    adminUsername = "contact";
    adminEmail = identities.contact.canonicalEmail;
    adminPasswordFile = "/var/lib/burrow/intake/forgejo_pass_contact_at_burrow_net.txt";
    oidcAdminGroup = contributors.groups.admins;
    oidcRestrictedGroup = contributors.groups.users;
    oidcClientSecretFile = config.age.secrets.burrowForgejoOidcClientSecret.path;
    authorizedKeys = forgeAuthorizedKeys;
  };

  services.burrow.forgeRunner = {
    enable = true;
    sshPrivateKeyFile = "/var/lib/burrow/intake/agent_at_burrow_net_ed25519";
    labels = [
      "self-hosted"
      "linux"
      "x86_64"
      "burrow-forge"
    ];
  };

  services.forgejo-nsc = {
    enable = true;
    nscTokenFile = config.age.secrets.burrowForgejoNscToken.path;
    dispatcher = {
      configFile = config.age.secrets.burrowForgejoNscDispatcherConfig.path;
    };
    autoscaler = {
      enable = true;
      configFile = config.age.secrets.burrowForgejoNscAutoscalerConfig.path;
    };
  };

  services.burrow.authentik = {
    enable = true;
    envFile = config.age.secrets.burrowAuthentikEnv.path;
    forgejoClientSecretFile = config.age.secrets.burrowForgejoOidcClientSecret.path;
    headscaleClientSecretFile = config.age.secrets.burrowHeadscaleOidcClientSecret.path;
    tailscaleClientSecretFile = config.age.secrets.burrowTailscaleOidcClientSecret.path;
    googleClientIDFile = config.age.secrets.burrowAuthentikGoogleClientId.path;
    googleClientSecretFile = config.age.secrets.burrowAuthentikGoogleClientSecret.path;
    googleAccountMapFile = config.age.secrets.burrowAuthentikGoogleAccountMap.path;
    googleLoginMode = "redirect";
    userGroupName = contributors.groups.users;
    adminGroupName = contributors.groups.admins;
    bootstrapUsers = bootstrapUsers;
  };

  services.burrow.headscale = {
    enable = true;
    oidcClientSecretFile = config.age.secrets.burrowHeadscaleOidcClientSecret.path;
    bootstrapUsers = headscaleBootstrapUsers;
  };
}