nix/modules/services/firefly-iii.nix

{
  lib,
  config,
  pkgs,
  ...
}:
let
  cfg = config.my.services.firefly-iii;
  dbName = "firefly-iii";
  appPort = 9080;
  dataImpPort = 9081;
in
{

  options.my.services.firefly-iii = {
    enable = lib.mkEnableOption "Enable Firefly-III budgeting app";

    accessToken = lib.mkOption {
      type = lib.types.path;
      default = "";
      description = ''
        Access token for Firefly-III
      '';
    };

    # age.secrets.firefly-iii-mailgun-key.file = ../../secrets/firefly-iii-mailgun-key.age;
    mailgun_key = lib.mkOption {
      type = lib.types.path;
      default = "";
      description = ''
        Mailgun API key for sending emails
      '';
    };

    proxy = {
      enable = lib.mkEnableOption "Set the proxy entry for this service";

      domain = lib.mkOption {
        default = "example.com";
        type = lib.types.str;
        description = ''
          The domain where Caddy is reachable
        '';
      };

      subdomain = lib.mkOption {
        default = "money";
        type = lib.types.str;
        description = ''
          The subdomain where Immich is reachable
        '';
      };

      host = lib.mkOption {
        default = "localhost";
        type = lib.types.str;
        description = ''
          host name where the service is running
        '';
      };

    };
  };

  config = lib.mkMerge [
    (lib.mkIf cfg.enable {

      my.services.postgresql = {
        enable = true;
        ensures = [
          {
            username = config.services.firefly-iii.user;
            database = dbName;
          }
        ];
      };

      services.firefly-iii = {
        enable = true;
        enableNginx = true;

        settings = {
          APP_ENV = "production";
          APP_URL = "https://${cfg.proxy.subdomain}.${cfg.proxy.domain}";
          SITE_OWNER = "davide@pasetto.me";
          DEFAULT_LANGUAGE = "en_US";
          TZ = "Europe/Rome";
          TRUSTED_PROXIES = "**";
          SEND_ERROR_MESSAGE = "true";
          SEND_REPORT_JOURNALS = "false";
          # AUTHENTICATION_GUARD = "web";
          AUTHENTICATION_GUARD = "remote_user_guard";
          AUTHENTICATION_GUARD_HEADER = "X-Authentik-Username";
          AUTHENTICATION_GUARD_EMAIL = "X-Authentik-Email";

          PGSQL_SCHEMA = "public";
          DB_CONNECTION = "pgsql";
          DB_DATABASE = dbName;
          DB_USERNAME = config.services.firefly-iii.user;

          MAILGUN_ENDPOINT = "api.eu.mailgun.net";
          MAILGUN_DOMAIN = "pazpi.top";
          MAILGUN_SECRET_FILE = cfg.mailgun_key;

          # Exactly 32 chars
          APP_KEY_FILE = cfg.accessToken;
        };

      };

      services.firefly-iii-data-importer = {
        enable = true;
        enableNginx = true;
        virtualHost = "firefly-iii-data-importer";
        settings = {
          FIREFLY_III_ACCESS_TOKEN = cfg.accessToken;
        };
      };

      networking.firewall.allowedTCPPorts = [
        appPort
        dataImpPort
      ];

      services.nginx.virtualHosts = {
        ${config.services.firefly-iii.virtualHost} = {
          listen = [
            {
              addr = "0.0.0.0";
              port = appPort;
            }
          ];
        };
        ${config.services.firefly-iii-data-importer.virtualHost} = {
          listen = [
            {
              addr = "0.0.0.0";
              port = dataImpPort;
            }
          ];
        };
      };

    })

    (lib.mkIf cfg.proxy.enable {
      services.caddy = with cfg.proxy; {
        virtualHosts."${subdomain}.${domain}".extraConfig = ''
          # directive execution order is only as stated if enclosed with route.
          route {
            # always forward outpost path to actual outpost
            reverse_proxy /outpost.goauthentik.io/* https://auth.pasetto.me {
              header_up Host {http.reverse_proxy.upstream.hostport}
            }

            # forward authentication to outpost
            forward_auth https://auth.pasetto.me {
                uri /outpost.goauthentik.io/auth/caddy

                # capitalization of the headers is important, otherwise they will be empty
                copy_headers X-Authentik-Username X-Authentik-Email

                # optional, in this config trust all private ranges, should probably be set to the outposts IP
                trusted_proxies private_ranges
            }

            # Firefly-III
            reverse_proxy http://${host}:${toString appPort}

          }

          reverse_proxy http://${host}:${toString appPort}
          import cloudflare_${domain}

        '';
      };
    })
  ];
}