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path: root/modules/services/unifi/default.nix
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{ config, lib, pkgs, ... }:

let
  cfg = config.my.services.unifi;
  secrets = config.age.secrets;
  allowedRules = {
    # https://help.ubnt.com/hc/en-us/articles/218506997
    allowedTCPPorts = [
      8080 # Port for UAP to inform controller.
      8880 # Port for HTTP portal redirect, if guest portal is enabled.
      8843 # Port for HTTPS portal redirect, ditto.
      6789 # Port for UniFi mobile speed test.
      9130 # Port for the prometheus exporter
    ];
    allowedUDPPorts = [
      3478 # UDP port used for STUN.
      10001 # UDP port used for device discovery.
    ];
  };
in
{
  options.my.services.unifi = with lib; {
    enable = mkEnableOption "Unifi controller";
    vhostName = mkOption {
      type = types.str;
      example = "music.fcuny.net";
      description = "Name for the virtual host";
    };
  };

  config = lib.mkIf cfg.enable {
    networking.firewall = allowedRules;
    users.users.unifi.group = "unifi";
    users.users.unifi.isSystemUser = true;
    users.groups.unifi = { };

    services.unifi = {
      enable = true;
      openFirewall = true;
      unifiPackage = pkgs.unifi7;
      mongodbPackage = pkgs.mongodb-4_2;
    };

    services.nginx.virtualHosts."${cfg.vhostName}" = {
      forceSSL = true;
      useACMEHost = cfg.vhostName;
      listen = [
        {
          addr = "100.85.232.66";
          port = 443;
          ssl = true;
        }
        {
          addr = "100.85.232.66";
          port = 80;
          ssl = false;
        }
      ];
      locations."/" = {
        proxyPass = "https://127.0.0.1:8443";
        proxyWebsockets = true;
      };
    };

    security.acme.certs."${cfg.vhostName}" = {
      dnsProvider = "gcloud";
      credentialsFile = secrets."acme/credentials".path;
    };

    my.services.backup = { paths = [ "/var/lib/unifi/data/backup" ]; };
  };
}