#!/usr/bin/env bash

SCRIPT_PATH=$(realpath -s "${0}")
SCRIPT_DIR=$(dirname "$SCRIPT_PATH")
SCRIPT=$(basename "$SCRIPT_PATH")

usage() {
  cat <<EOF
Usage: $SCRIPT [OPTIONS]...

List available DNS zones.

Options:
  -c, --config        path to config file
  -j, --json          print json format
  -J, --json-pretty   print pretty json format (implies -j)
  -r, --raw           print raw format
  -h, --help          print this help message

EOF
  exit
}

config_file="/etc/dns-manager/config.sh"
json=false
json_pretty=false
raw=false

while [ -n "$1" ]; do
  opt=$1
  shift
  case "$opt" in
    -c|--config)
      if [ -z "$1" ]; then
        echo "$SCRIPT: missing argument to option -- '$opt'" >&2
	exit 1
      fi
      config_file=$1
      shift
    ;;
    -h|--help)
      usage
    ;;
    -j|--json)
      json=true
    ;;
    -J|--json-pretty)
      json=true
      json_pretty=true
    ;;
    -r|--raw)
      raw=true
    ;;
    -*)
      echo "$SCRIPT: invalid option -- '$opt'" >&2
      exit 1
    ;;
    *)
      echo "$SCRIPT: invalid argument -- '$opt'" >&2
      exit 1
    ;;
  esac
done

if $json && $raw; then
  echo "$SCRIPT: invalid options: --raw and --json are mutually exclusive" >&2
  exit 1
fi

source "$config_file" || exit 2

LIB_DIR=${LIB_DIR:-$SCRIPT_DIR/lib}
source "$LIB_DIR"/dns.sh || exit 3
source "$LIB_DIR"/output.sh || exit 3

zones_data=$(dns_zones) || exit 10

if $raw; then
  "$JQ" --raw-output '.[] | "\(.zone)\t\(.view)\t\(.status)"' <<<"$zones_data"
elif $json; then
  jq_opts=""
  $json_pretty || jq_opts="--compact-output"
  "$JQ" $jq_opts <<<"$zones_data"
else
  while read -r zone view status; do
    zone=$("$IDN2" --decode <<<"$zone")
    echo "$zone$TAB$view$TAB$status"
  done < <("$JQ" --raw-output '.[] | "\(.zone)\t\(.view)\t\(.status)"' <<<"$zones_data") | table_output "ZONE" "VIEW" "STATUS"
fi