{ realPkgs, ... }:

let

  excludeFile = builtins.toFile "excludeFile.txt" "/foo/bar";

in
{
  programs.borgmatic = {
    enable = true;
    backups = {
      main = {
        location = {
          sourceDirectories = [ "/my-stuff-to-backup" ];
          repositories = [ "/mnt/disk1" ];
          excludeHomeManagerSymlinks = true;
          extraConfig = {
            exclude_from = [ (toString excludeFile) ];
          };
        };
      };
    };
  };

  nmt.script = ''
    config_file=$TESTED/home-files/.config/borgmatic.d/main.yaml
    assertFileExists $config_file

    declare -A expectations

    expectations[exclude_from[0]]="${excludeFile}"

    yq=${realPkgs.yq-go}/bin/yq

    for filter in "''${!expectations[@]}"; do
      expected_value="''${expectations[$filter]}"
      actual_value="$($yq ".$filter" $config_file)"

      if [[ "$actual_value" != "$expected_value" ]]; then
        fail "Expected '$filter' to be '$expected_value' but was '$actual_value'"
      fi
    done

    hmExclusionsFile=$($yq '.exclude_from[1]' $config_file)
    expected_content='/home/hm-user/.config/borgmatic.d/main.yaml'

    grep --quiet "$expected_content" "$hmExclusionsFile"

    if [[ $? -ne 0 ]]; then
      echo "Expected to find $expected_content in file $hmExclusionsFile but didn't" >&2
      exit 1
    fi
  '';
}
