#!/bin/sh
# link: https://git.p2p.legal/aya/dpgpid/
# desc: dpgpid (Decentralized PGP IDentifiers) shares PGP keys with DIDs on IPFS

# Copyleft 2022 Yann Autissier <aya@asycn.io>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

set -eu

DATE=$(date -u +%FT%TZ%Z)
USAGE='[--help] [--version] show'
VERSION='0.0.1'

dpgpid() {
  while test $# != 0; do
    case "$1" in
    -h|--help)
      help
      ;;
    -v|--version)
      version
      ;;
    --)
      shift
      break
      ;;
    -*)
      usage
      ;;
    show)
      show
      ;;
    *)
      break
      ;;
    esac
    shift
  done
}

help() {
  usage
}

show() {
  gpg --list-keys --with-colons |awk -F: '$1 == "pub" {print "did:pgp:"$5}'
}

usage() {
  printf "%s\n" "Usage: $(basename "$0") ${USAGE}"
}

version() {
  printf "%s\n" "Version: $(basename "$0") v${VERSION}"
}

dpgpid "$@"