{ config, lib, ... }:

let
  cfg = config.homelab.apps.technitiumDNS;
in {
  options.homelab.apps.technitiumDNS.enable = lib.mkEnableOption "Technitium DNS";

  config = lib.mkIf cfg.enable {
    homelab.virtualisation.containers.enable = true;

    virtualisation.oci-containers.containers.technitium-dns = {
      hostname = "technitium-dns";
      image = "technitium/dns-server:12.1";
      ports = [
        # "5380:5380/tcp"   #DNS web console (HTTP)
        # "53443:53443/tcp" #DNS web console (HTTPS)
        "53:53/udp"       #DNS service
        "53:53/tcp"       #DNS service
        # "853:853/udp"     #DNS-over-QUIC service
        # "853:853/tcp"     #DNS-over-TLS service
        # "443:443/udp"     #DNS-over-HTTPS service (HTTP/3)
        # "443:443/tcp"     #DNS-over-HTTPS service (HTTP/1.1, HTTP/2)
        # "80:80/tcp"       #DNS-over-HTTP service (use with reverse proxy or certbot certificate renewal)
        # "8053:8053/tcp"   #DNS-over-HTTP service (use with reverse proxy)
        # "67:67/udp"       #DHCP service
      ];
      environment = {
        # The primary domain name used by this DNS Server to identify itself.
        DNS_SERVER_DOMAIN = config.networking.hostName;
        # DNS Server will use IPv6 for querying whenever possible with this option enabled.
        DNS_SERVER_PREFER_IPV6 = "true";
        # The TCP port number for the DNS web console over HTTP protocol.
        # DNS_SERVER_WEB_SERVICE_HTTP_PORT=5380
        # The TCP port number for the DNS web console over HTTPS protocol.
        # DNS_SERVER_WEB_SERVICE_HTTPS_PORT=53443
        # Enables HTTPS for the DNS web console.
        # DNS_SERVER_WEB_SERVICE_ENABLE_HTTPS=false
        # Enables self signed TLS certificate for the DNS web console.
        # DNS_SERVER_WEB_SERVICE_USE_SELF_SIGNED_CERT=false
        # Enables DNS server optional protocol DNS-over-HTTP on TCP port 8053 to be used with a TLS terminating reverse proxy like nginx.
        # DNS_SERVER_OPTIONAL_PROTOCOL_DNS_OVER_HTTP=false
        # Recursion options: Allow, Deny, AllowOnlyForPrivateNetworks, UseSpecifiedNetworks.
        #nDNS_SERVER_RECURSION=AllowOnlyForPrivateNetworks
        # Comma separated list of IP addresses or network addresses to deny recursion. Valid only for `UseSpecifiedNetworks` recursion option.
        # DNS_SERVER_RECURSION_DENIED_NETWORKS=1.1.1.0/24
        # Comma separated list of IP addresses or network addresses to allow recursion. Valid only for `UseSpecifiedNetworks` recursion option.
        # DNS_SERVER_RECURSION_ALLOWED_NETWORKS=127.0.0.1, 192.168.1.0/24
        # Sets the DNS server to block domain names using Blocked Zone and Block List Zone.
        DNS_SERVER_ENABLE_BLOCKING = "false";
        # Specifies if the DNS Server should respond with TXT records containing a blocked domain report for TXT type requests.
        # DNS_SERVER_ALLOW_TXT_BLOCKING_REPORT=false
        # A comma separated list of block list URLs.
        # DNS_SERVER_BLOCK_LIST_URLS=
        #Comma separated list of forwarder addresses.
        DNS_SERVER_FORWARDERS="195.130.130.2,195.130.131.2";
        # Forwarder protocol options: Udp, Tcp, Tls, Https, HttpsJson.
        # DNS_SERVER_FORWARDER_PROTOCOL=Tcp
        # Enable this option to use local time instead of UTC for logging.
        # DNS_SERVER_LOG_USING_LOCAL_TIME=true
      };
      volumes = [
        "technitium_dns:/etc/dns"
      ];
      labels = {
        "traefik.enable" = "true";
        "traefik.http.routers.technitium-dns.rule" = "Host(`dns.${config.networking.hostName}.${config.networking.domain}`)";
        "traefik.http.services.technitium-dns.loadbalancer.server.port" = "5380";
        "traefik.tls.options.default.minVersion" = "VersionTLS13";
      };
      autoStart = true;
    };
  };
}