install_functions

#
# Generate repo file under /etc/apt/sources.list.d/
#
function apt_add_repo() {
  local -r repo_name="$1"
  local -r repo_data="$3" # "http(s)://host/path/uri argument0 .. argumentN"
  local -r include_src="${4:-yes}"
  local -r kr_path="${5:-/usr/share/keyrings/${repo_name}.gpg}"
  local -r repo_path="${6:-/etc/apt/sources.list.d/${repo_name}.list}"

  echo "deb [signed-by=${kr_path}] ${repo_data}" > "${repo_path}"
  if [[ "${include_src}" == "yes" ]] ; then
    echo "deb-src [signed-by=${kr_path}] ${repo_data}" >> "${repo_path}"
  fi

  apt-get update -qq
}

#
# Generate repo file under /etc/yum.repos.d/
#
function dnf_add_repo() {
  local -r repo_name="$1"
  local -r repo_url="$3" # "http(s)://host/path/filename.repo"
  local -r kr_path="${5:-/etc/pki/rpm-gpg/${repo_name}.gpg}"
  local -r repo_path="${6:-/etc/yum.repos.d/${repo_name}.repo}"

  curl -s -L "${repo_url}" \
    | dd of="${repo_path}" status=progress
#    | perl -p -e "s{^gpgkey=.*$}{gpgkey=file://${kr_path}}" \
}

#
# Keyrings default to
# /usr/share/keyrings/${repo_name}.gpg (debian/ubuntu) or
# /etc/pki/rpm-gpg/${repo_name}.gpg    (rocky/RHEL)
#
function os_add_repo() {
  local -r repo_name="$1"
  local -r signing_key_url="$2"
  local -r repo_data="$3" # "http(s)://host/path/uri argument0 .. argumentN"
  local kr_path
  if is_debuntu ; then kr_path="${5:-/usr/share/keyrings/${repo_name}.gpg}"
                  else kr_path="${5:-/etc/pki/rpm-gpg/${repo_name}.gpg}" ; fi

  mkdir -p "$(dirname "${kr_path}")"

  curl -fsS --retry-connrefused --retry 10 --retry-max-time 30 "${signing_key_url}" \
    | gpg --import --no-default-keyring --keyring "${kr_path}"

  if is_debuntu ; then apt_add_repo "${repo_name}" "${signing_key_url}" "${repo_data}" "${4:-yes}" "${kr_path}" "${6:-}"
                  else dnf_add_repo "${repo_name}" "${signing_key_url}" "${repo_data}" "${4:-yes}" "${kr_path}" "${6:-}" ; fi
}