{ config, pkgs, domain, secrets, ... }:
{
  sops.secrets = {
    "nx2site/namecheap.pw" = { };
    # "nx2site/cloudflare/api-token-dns-edit" = { };
    "nx2site/cloudflare/global-api-key" = { };
  };

  systemd = {
    timers."dynamic-dns" = {
      wantedBy = [ "timers.target" ];
      timerConfig = {
        OnBootSec = "2m";
        OnUnitActiveSec = "10m";
        Unit = "dynamic-dns.service";
      };
    };
    services."dynamic-dns" = let 
      u = let
        account_id = secrets.email.gmail-online.mail;
        zone_id = "33fecab36e060f49d492127345ea95a0";
        record_id = {
          base  = "58d3412e8d88889d1a611b3669f0700f";
          sub   = "fc861353142bc05d5dbad1799178e6a1";
          base6 = "d1b90e21d2d747dcb30448bd65312927";
          sub6  = "b8082b7afe9e80971fc9f9dda16ec284";
        };
        passord-file-path = config.sops.secrets."nx2site/cloudflare/global-api-key".path;
        log-file-path = "/var/log/couldflare.log";
        count-file-path = "/var/log/cloudflare-count.txt";
      in pkgs.writers.writePython3Bin "dyn_dns" {
        libraries = with pkgs.python311Packages; [ requests ];
        flakeIgnore = [ "E501" "E305" "E701" "E704" "E302" "E114" "F841" "E121" "E261" "E303"];
      } /* python */ ''
        import requests
        import subprocess
        from datetime import datetime

        def get_public_ip(ipv6=False):
            return subprocess.run(['${pkgs.curl}/bin/curl', '-s', '-6' if ipv6 else '-4', 'https://ifconfig.me'], capture_output=True, text=True).stdout.strip()

        def main():
            my_ip = get_public_ip()
            my_ip6 = get_public_ip(ipv6=True)

            with open("${count-file-path}", "r") as f:
                content = f.read()
                if content == "": count = 0
                else: count = int(content)
            count += 1
            with open("${count-file-path}", "w") as f:
                f.write(str(count))

            # 4
            with open("${passord-file-path}", 'r') as pw_file:
                pw = pw_file.read().strip()

            # Perform DNS updates
            # https://developers.cloudflare.com/api/operations/dns-records-for-a-zone-update-dns-record
            resp_base = requests.patch(
              'https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id.base}',
              headers={
                'Content-Type': 'application/json',
                'X-Auth-Email': '${account_id}',
                'X-Auth-Key': pw
              },
              json={
                "comment": "Domain verification record",
                "name": "${domain}",
                "proxied": True,
                "settings": {},
                "tags": [],
                "ttl": 1, # automatic
                "content": my_ip,
                "type": "A"
              }
            )

            resp_subd = requests.patch(
              'https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id.sub}',
              headers={
                'Content-Type': 'application/json',
                'X-Auth-Email': '${account_id}',
                'X-Auth-Key': pw
              },
              json={
                "comment": "Domain verification record",
                "name": "${domain}",
                "proxied": True,
                "settings": {},
                "tags": [],
                "ttl": 1, # automatic
                "content": my_ip,
                "type": "A"
              }
            )

            if resp_base.status_code != 200:
                print(resp_base.text)


            now_str = datetime.now().strftime('%Y/%m/%d-%R')
            log_entry = f"At {now_str} - to {my_ip} - Response {resp_base.status_code}\n"
            print(log_entry, end="")
            with open("${log-file-path}", 'a') as log_file:
                log_file.write(log_entry)

            # Perform DNS updates
            # https://developers.cloudflare.com/api/operations/dns-records-for-a-zone-update-dns-record
            resp_base = requests.patch(
              'https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id.base6}',
              headers={
                'Content-Type': 'application/json',
                'X-Auth-Email': '${account_id}',
                'X-Auth-Key': pw
              },
              json={
                "comment": "Domain verification record",
                "name": "${domain}",
                "proxied": True,
                "settings": {},
                "tags": [],
                "ttl": 1, # automatic
                "content": my_ip6,
                "type": "AAAA"
              }
            )

            resp_subd = requests.patch(
              'https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id.sub6}',
              headers={
                'Content-Type': 'application/json',
                'X-Auth-Email': '${account_id}',
                'X-Auth-Key': pw
              },
              json={
                "comment": "Domain verification record",
                "name": "${domain}",
                "proxied": True,
                "settings": {},
                "tags": [],
                "ttl": 1, # automatic
                "content": my_ip6,
                "type": "AAAA"
              }
            )

            if resp_base.status_code != 200:
                print(resp_base.text)


            now_str = datetime.now().strftime('%Y/%m/%d-%R')
            log_entry = f"At {now_str} - to {my_ip6} - Response {resp_base.status_code}\n"
            print(log_entry, end="")
            with open("${log-file-path}", 'a') as log_file: log_file.write(log_entry)

        if __name__ == "__main__":
            main()
      '';
    in {
      script = ''
        set -eu
        ${u}/bin/dyn_dns 
      '';
      serviceConfig = {
        Type = "oneshot";
        User = "root";
      };
    };
  };
  networking.hosts = { # docker network inspect nx2site_default | grep -E "Name|IPv4" | tr "\n" " " | sed -r 's- +- -g;s-\n?"Name": -\n-g' | sed -r '1d;2d;s-"(.+?)", "IPv4Address": "(.+)/16",-  "\2" = [ "\1.docker" ];-g'
    # "172.1.2.1" = [ "staticweb.docker" ]; 
    # "172.1.3.1" = [ "matrix.docker" ]; 
    # "172.1.0.9" = [ "matrixdb.docker" ]; 
    # "172.1.4.1" = [ "matrix-ss.docker" ]; 
    # "172.1.0.7" = [ "matrix-ssdb.docker" ]; 
    "172.1.5.1" = [ "pw.docker" ]; 
    "172.1.6.1" = [ "git.docker" ]; 
    # "172.1.0.10" = [ "gitdb.docker" ];
    # "172.1.7.1" = [ "nn.docker" ]; 
    # "172.1.8.1" = [ "llm.docker" ]; 
    # "172.1.9.1" = [ "proxy.docker" ]; 
    # "172.1.10.1" = [ "share.docker" ]; 
    # "172.1.11.1" = [ "odq.docker" ]; 
  };
}