nix-config/hosts/nas/apps/traefik/default.nix

{ config, ... }:
let
  traefikDataDir = "/var/lib/traefik";
  traefikUserId = config.users.users.nix-apps.uid;
  traefikGroupId = config.users.groups.jallen-nas.gid;
  domain = "mjallen.dev";

  authentikUrl  = "http://10.0.1.18:9000";
  collaboraUrl  = "http://10.0.1.18:9980";
  cloudUrl      = "http://10.0.2.18:80";
  jellyfinUrl   = "http://10.0.1.18:8096";
  jellyseerrUrl = "http://10.0.1.18:5055";
in
{
  networking.firewall = {
      allowedTCPPorts = [
        80
        443
        8080
      ];
      allowedUDPPorts = [
        80
        443
        8080
      ];
    };
  
  services.traefik = {
    enable = true;
    dataDir = "/media/nas/ssd/nix-app-data/traefik";
    group = "jallen-nas";
    environmentFiles = [ "${config.services.traefik.dataDir}/traefik.env" ]; # todo: sops
    
    staticConfigOptions = {
      entryPoints = {
        web = {
          address = ":80";
          asDefault = true;
          http.redirections.entrypoint = {
            to = "websecure";
            scheme = "https";
          };
        };

        websecure = {
          address = ":443";
          asDefault = true;
          http.tls.certResolver = "letsencrypt";
        };
      };

      log = {
        level = "INFO";
      };

      certificatesResolvers.letsencrypt.acme = {
        email = "jalle008@proton.me";
        storage = "${config.services.traefik.dataDir}/acme.json";
        dnsChallenge = {
          provider = "cloudflare";
          resolvers = [
            "1.1.1.1:53"
            "8.8.8.8:53"
          ];
        };
      };

      api.dashboard = true;
      # Access the Traefik dashboard on <Traefik IP>:8080 of your server
      # api.insecure = true;
    };

    dynamicConfigOptions = {
      http = {
        middlewares = {
          authentik = {
            forwardAuth = {
              tls.insecureSkipVerify = true;
              address = "https://authentik.${domain}/outpost.goauthentik.io/auth/traefik";
              trustForwardHeader = true;
              authResponseHeaders = [
                "X-authentik-username"
                "X-authentik-groups"
                "X-authentik-email"
                "X-authentik-name"
                "X-authentik-uid"
                "X-authentik-jwt"
                "X-authentik-meta-jwks"
                "X-authentik-meta-outpost"
                "X-authentik-meta-provider"
                "X-authentik-meta-app"
                "X-authentik-meta-version"
              ];
            };
          };
        };

        services = {
          authentik.loadBalancer.servers = [
            {
              url = authentikUrl;
            }
          ];
          collabora.loadBalancer.servers = [
            {
              url = collaboraUrl;
            }
          ];
          cloud.loadBalancer.servers = [
            {
              url = cloudUrl;
            }
          ];
          jellyfin.loadBalancer.servers = [
            {
              url = jellyfinUrl;
            }
          ];
          jellyseerr.loadBalancer.servers = [
            {
              url = jellyseerrUrl;
            }
          ];
        };

        routers = {
          authentik = {
            entryPoints = ["websecure"];
            rule = "Host(`authentik.${domain}`)";
            service = "authentik";
            tls.certResolver = "letsencrypt";
          };
          collabora = {
            entryPoints = ["websecure"];
            rule = "Host(`office.${domain}`)";
            service = "collabora";
            tls.certResolver = "letsencrypt";
          };
          cloud = {
            entryPoints = ["websecure"];
            rule = "Host(`cloud.${domain}`)";
            service = "cloud";
            tls.certResolver = "letsencrypt";
          };
          jellyfin = {
            entryPoints = ["websecure"];
            rule = "Host(`jellyfin.${domain}`)";
            service = "jellyfin";
            tls.certResolver = "letsencrypt";
          };
          jellyseerr = {
            entryPoints = ["websecure"];
            rule = "Host(`jellyseerr.${domain}`)";
            service = "jellyseerr";
            tls.certResolver = "letsencrypt";
          };
        };
      };
    };
  };
  # todo: fail2ban/etc
}