{ config, lib, ... }:

with lib;
with types;
let
  cfg = config.my;
  mkAddress = addr: let
    splitted = lib.splitString "/" addr;
    elemAt = builtins.elemAt splitted;
  in
  { address = (elemAt 0); prefixLength = lib.toInt (elemAt 1); };
in
{
  options.my = {
    email = mkOption {
      description = "Admin email";
      type = str;
      default = "";
      example = "clipper@ens.fr";
    };

    emailWithDot = mkOption {
      description = "Admin email with dots";
      type = str;
      default = lib.replaceStrings ["@"] ["."] cfg.email;
      example = "clipper.ens.fr";
    };
    
    acmeStaging = mkOption {
      description = "Enable staging servers";
      type = bool;
      default = false;
    };
    
     subZone = mkOption {
      description = "Sub zone for hosting the services";
      type = str;
      default = "";
      example = "ens.pizza";
    };
    
     ipv4 = mkOption {
      description = "Public IPv4 addresses without prefix";
      type = listOf str;
      example = [ "192.186.1.153" ];
      default = map (v: (mkAddress v).address) cfg.ipv4Full;
    };

    ipv4Internal = mkOption {
      description = "Private IPv4 addresses without prefix";
      type = listOf str;
      example = [ "192.186.1.153" ];
      default = map (v: (mkAddress v).address) cfg.ipv4InternalFull;
    };

    ipv4InternalFull = mkOption {
      description = "Private IPv4 addresses with prefix";
      type = listOf str;
      default = [];
      example = [ "192.168.1.153/24" ];
    };

     ipv4Full = mkOption {
      description = "Public IPv4 addresses with prefix";
      type = listOf str;
      default = [];
      example = [ "192.186.1.153/24" ];
    };

     ipv6.standard = mkOption {
      description = "Public IPv6 addresses for standard services without prefix";
      type = listOf str;
      example = [ "2001:470:1f13:21d:f515:b348:cd48:e064" ];
      default = map (v: (mkAddress v).address) cfg.ipv6.standardFull;
    };

    ipv6.standardFull = mkOption {
      description = "Public IPv6 addresses for standard services with prefix";
      type = listOf str;
      example = [ "2001:470:1f13:21d:f515:b348:cd48:e064/64" ];
    };

    ipv6.acme = mkOption {
      description = "Public IPv6 address for ACME services (acme-dns) without prefix";
      type = str;
      default = (mkAddress cfg.ipv6.acmeFull).address;
      example = "2001:470:1f13:21d:f515:b348:cd48:e064/64";
    };

    ipv6.acmeFull = mkOption {
      description = "Public IPv6 address for ACME services (acme-dns) with prefix";
      type = str;
      example = "2001:470:1f13:21d:f515:b348:cd48:e064/64";
    };

    privateRanges = mkOption {
      description = "Internal management ranges for access control";
      type = listOf str;
      example = [ "10.1.0.0/22" ];
    };
  };

  config = {
    # Default IPv4 exit route
    networking.defaultGateway = {
      address = "";
      interface = "ens18";
    };

    networking.interfaces.ens20 = {
      ipv4.addresses = map mkAddress cfg.ipv4InternalFull;
    };

    networking.interfaces.ens19 = {
      ipv6.addresses = map mkAddress (cfg.ipv6.standardFull ++ [ cfg.ipv6.acmeFull ]);
    };

    networking.interfaces.ens18 = {
      ipv4.addresses = map mkAddress cfg.ipv4Full;
    };
  };
}