{ pkgs, config, ... }:
let
  # secrets = config.sops.secrets;
  # domainInternal = "git.sorre.internal";
  domainPublic = "git.sorre.xyz";

  commonSettings = {
    readme = "main:README.md";
  };
in
{
  networking.firewall.allowedTCPPorts = [ 8721 ];
  services.nginx = {
    enable = true;
    # virtualHosts."${domainInternal}" = {
    #   forceSSL = true;
    #   # sslCertificateKey = secrets."wg-ca-key".path;
    #   # sslCertificate = secrets."wg-ca-crt".path;
    #   listen = [
    #     {
    #       addr = "100.64.0.3";
    #       port = 443;
    #       # ssl = true;
    #     }
    #   ];
    # };

    virtualHosts."${domainPublic}" = {
      listen = [
        {
          addr = "100.64.0.6";
          port = 8721;
        }
      ];
    };
  };

  # services.cgit.internal = {
  #   enable = true;
  #   user = "cgit-internal";
  #   group = "cgit";
  #   nginx.virtualHost = domainInternal;
  #   gitHttpBackend.checkExportOkFiles = false;
  #   scanPath = "/var/lib/git/repos/isabella";
  #   settings = commonSettings;
  # };

  services.cgit.public = {
    enable = true;
    user = "cgit-public";
    group = "cgit";
    nginx.virtualHost = domainPublic;
    gitHttpBackend.checkExportOkFiles = false;
    repos = {
      futils.path = "/var/lib/git/repos/isabella/futils";
      xpkgs.path = "/var/lib/git/repos/isabella/xpkgs";
      sorre-website.path = "/var/lib/git/repos/isabella/sorre-website";
      nixos-config.path = "/var/lib/git/repos/isabella/nixos-config";
    };
    settings = commonSettings;
  };

  systemd.services.backup-git-repos = {
    serviceConfig = {
      Type = "exec";
      DynamicUser = true;
      Group = "cgit";
      StateDirectory = "backups/git";
      StateDirectoryMode = "0700";
      Umask = "077";
    };
    # TODO: figure out how to check for in-progress transfers and handle that.
    description = "Back up git repositories";
    path = [ pkgs.gnutar ];
    enableStrictShellChecks = true;
    script = ''
      #!/usr/bin/env bash
      set -euo pipefail

      TIMESTAMP="$(date +%Y%m%d%H%M%S)"
      BACKUP_PATH="$STATE_DIRECTORY/$TIMESTAMP.backup.tar"
      echo "Backing up git to $BACKUP_PATH" >&2

      tar cf "$BACKUP_PATH" /var/lib/git
      chmod u=r,go-rwx "$BACKUP_PATH"

      find "$STATE_DIRECTORY" -type f -name '*.backup.tar' -print0 |
        sort --zero-terminated --reverse |
        tail --zero-terminated --lines=+6 |
        xargs --null --no-run-if-empty rm --
    '';
  };

  systemd.timers.backup-git-repos = {
    description = "Back up git repos every morning";
    timerConfig.OnCalendar = "*-*-* 05:00:00";
    wantedBy = [ "timers.target" ];
  };
}