path: root/terraform/admin/keycloak.nix

{ lib, ... }:
let
  mkUser =
    {
      enable ? true,
      first_name,
      last_name,
      username,
      email,
      initial_password ? null,
    }:
    {
      realm_id = lib.tf.ref "keycloak_realm.fcuny.id";
      enabled = enable;
      inherit
        username
        email
        first_name
        last_name
        ;
      email_verified = true;

      required_actions = [
        "Update password"
        "Configure OTP"
      ];

      initial_password = {
        value = email;
        temporary = true;
      };
    };

in
{
  provider.keycloak = {
    client_id = "terranix";
    url = "https://id.fcuny.net";
    realm = "master";
  };

  resource.secret_resource.keycloak_smtp_password.lifecycle.prevent_destroy = true;

  resource.keycloak_realm."fcuny" = {
    enabled = true;
    realm = "fcuny.net";
    display_name = "Keycloak for fcuny.net";
    login_theme = "keycloak";
    access_code_lifespan = "1h";

    reset_password_allowed = true;
    remember_me = true;
    login_with_email_allowed = true;

    smtp_server = {
      from = "noreply@fcuny.net";
      from_display_name = "fcuny.net identity services";
      host = "smtp.fastmail.com";
      port = 465;
      ssl = true;
      starttls = true;

      auth = {
        username = "franck@fcuny.net";
        # nix run .#tf -- import secret_resource.keycloak_smtp_password SMPT_PASSWORD
        # https://github.com/numtide/terraform-provider-secret?tab=readme-ov-file#usage
        password = lib.tf.ref "resource.secret_resource.keycloak_smtp_password.value";
      };
    };

    default_signature_algorithm = "RS256";
  };

  resource.keycloak_user = {
    fcuny = mkUser {
      username = "fcuny";
      first_name = "Franck";
      last_name = "Cuny";
      email = "franck@fcuny.net";
    };
  };

  data.keycloak_openid_client.realm_management_client = {
    realm_id = lib.tf.ref "keycloak_realm.fcuny.id";
    client_id = "realm-management";
  };

  data.keycloak_role.admin = {
    realm_id = lib.tf.ref "keycloak_realm.fcuny.id";
    client_id = lib.tf.ref "data.keycloak_openid_client.realm_management_client.id";
    name = "realm-admin";
  };

  resource.keycloak_role = {
    forgejo_admin = {
      realm_id = lib.tf.ref "keycloak_realm.fcuny.id";
      client_id = lib.tf.ref "keycloak_openid_client.forgejo.id";
      name = "Forgejo Admin";
      description = "Forgejo's site admin";
    };
  };

  resource.keycloak_openid_user_client_role_protocol_mapper = {
    forgejo_role_mapper = {
      name = "forgejo_roles_mapper";
      realm_id = lib.tf.ref "keycloak_realm.fcuny.id";
      client_id = lib.tf.ref "keycloak_openid_client.forgejo.id";

      claim_name = "forgejo_roles";
      claim_value_type = "String";
      add_to_id_token = true;
      add_to_access_token = true;
      multivalued = true;
      client_id_for_role_mappings = lib.tf.ref "keycloak_openid_client.forgejo.client_id";
    };
  };

  resource.keycloak_user_roles =
    let
      superadminRoles = {
        exhaustive = false;

        realm_id = lib.tf.ref "keycloak_realm.fcuny.id";

        role_ids = [
          (lib.tf.ref "data.keycloak_role.admin.id")
          (lib.tf.ref "keycloak_role.forgejo_admin.id")
        ];
      };
    in
    {
      fcuny_roles = superadminRoles // {
        user_id = lib.tf.ref "keycloak_user.fcuny.id";
      };
    };

  resource.keycloak_openid_client = {
    forgejo = {
      realm_id = lib.tf.ref "keycloak_realm.fcuny.id";
      client_id = "forgejo";
      name = "Forgejo [fcuny.net]";
      enabled = true;
      access_type = "CONFIDENTIAL";
      standard_flow_enabled = true;
      oauth2_device_authorization_grant_enabled = true;
      base_url = "https://code.fcuny.net";
      description = "fcuny.net's Forgejo instance";
      direct_access_grants_enabled = true;
      exclude_session_state_from_auth_response = false;
      service_accounts_enabled = false;
      full_scope_allowed = false;

      valid_redirect_uris = [
        "https://code.fcuny.net/*"
      ];

      web_origins = [
        "https://code.fcuny.net"
      ];
    };
  };
}