nixos-config/modules/caddy-proxy/default.nix

{
  pkgs,
  config,
  lib,
  ...
}:
with lib;
let
  cfg = config.eboskma.caddy-proxy;

  mkProxyHost = target: {
    extraConfig = ''
      reverse_proxy ${target}

      tls {
        dns cloudflare {env.CF_API_TOKEN}
        propagation_timeout -1
      }
    '';
  };

  mkLocalProxyHost = target: {
    extraConfig = ''
      @local_or_ts {
        remote_ip 10.0.0.0/24 100.64.0.0/10
      }
      handle @local_or_ts {
        reverse_proxy ${target}
      }
      handle {
        error "Nope." 403
      }

      tls {
        dns cloudflare {env.CF_API_TOKEN}
        propagation_timeout -1
      }
    '';
  };
in
{
  options.eboskma.caddy-proxy = {
    enable = mkEnableOption "Caddy proxy";
    package = mkPackageOption pkgs "caddy" { };
  };

  config = mkIf cfg.enable {
    services.caddy = {
      enable = true;
      package = cfg.package;

      email = "erwin@datarift.nl";

      acmeCA = "https://acme-v02.api.letsencrypt.org/directory";

      virtualHosts = {
        "home.datarift.nl" = mkProxyHost "homeassistant.barn-beaver.ts.net:8123";
        "ci.datarift.nl" = mkProxyHost "ci.barn-beaver.ts.net:8100";
        "frigate.datarift.nl" = mkLocalProxyHost "frigate.barn-beaver.ts.net:5000";
        "git.datarift.nl" = mkProxyHost "gitea.barn-beaver.ts.net:3000";
        "minio.datarift.nl" = mkProxyHost "minio.barn-beaver.ts.net:9000";
        "minio-admin.datarift.nl" = mkLocalProxyHost "minio.barn-beaver.ts.net:9001";
        "saga.datarift.nl" = mkLocalProxyHost "saga.barn-beaver.ts.net:3000";
        "unifi.datarift.nl" = mkLocalProxyHost "unifi.barn-beaver.ts.net:8443";
      };
    };

    systemd.services.caddy.serviceConfig.EnvironmentFile = [ config.sops.secrets.caddy-env.path ];

    networking.firewall.allowedTCPPorts = [
      80
      443
    ];
  };
}