{ config, pkgs, lib, ... }:

with lib;

let
  cfg = config.within.services.graphviz;
  graphviz = pkgs.stdenv.mkDerivation {
    name = "GraphvizOnline";
    src = pkgs.fetchFromGitHub {
      owner = "Xe";
      repo = "GraphvizOnline";
      rev = "98ab98e6dbabba984e49be2c8b46c470aca829fe";
      sha256 = "l3BEmY20pfC1rWyQLz6j4pDPdZcv1FYKeIpBZUmosXc=";
      fetchSubmodules = false;
    };

    phases = "installPhase";

    installPhase = ''
      mkdir -p $out
      cp -vrf $src/* $out
    '';
  };
in {
  options.within.services.graphviz.enable =
    mkEnableOption "Activates the graphviz site";

  config = mkIf cfg.enable {
    services.nginx.virtualHosts."graphviz" = {
      serverName = "graphviz.christine.website";
      locations."/".root = graphviz;
      forceSSL = true;
      useACMEHost = "christine.website";
      extraConfig = ''
        access_log /var/log/nginx/graphviz.access.log;
      '';
    };

    services.cfdyndns.records = [ "graphviz.christine.website" ];
  };
}