#!/usr/bin/env sh
# shellcheck disable=SC2034
dns_mydevil_info='MyDevil.net
 MyDevil.net already supports automatic Lets Encrypt certificates,
 except for wildcard domains.
 This script depends on devil command that MyDevil.net provides,
 which means that it works only on server side.
Site: MyDevil.net
Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_mydevil
Issues: github.com/acmesh-official/acme.sh/issues/2079
Author: Marcin Konicki <https://ahwayakchih.neoni.net>
'

########  Public functions #####################

#Usage: dns_mydevil_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_mydevil_add() {
  fulldomain=$1
  txtvalue=$2
  domain=""

  if ! _exists "devil"; then
    _err "Could not find 'devil' command."
    return 1
  fi

  _info "Using mydevil"

  domain=$(mydevil_get_domain "$fulldomain")
  if [ -z "$domain" ]; then
    _err "Invalid domain name: could not find root domain of $fulldomain."
    return 1
  fi

  # No need to check if record name exists, `devil` always adds new record.
  # In worst case scenario, we end up with multiple identical records.

  _info "Adding $fulldomain record for domain $domain"
  if devil dns add "$domain" "$fulldomain" TXT "$txtvalue"; then
    _info "Successfully added TXT record, ready for validation."
    return 0
  else
    _err "Unable to add DNS record."
    return 1
  fi
}

#Usage: fulldomain txtvalue
#Remove the txt record after validation.
dns_mydevil_rm() {
  fulldomain=$1
  txtvalue=$2
  domain=""

  if ! _exists "devil"; then
    _err "Could not find 'devil' command."
    return 1
  fi

  _info "Using mydevil"

  domain=$(mydevil_get_domain "$fulldomain")
  if [ -z "$domain" ]; then
    _err "Invalid domain name: could not find root domain of $fulldomain."
    return 1
  fi

  # catch one or more numbers
  num='[0-9][0-9]*'
  # catch one or more whitespace
  w=$(printf '[\t ][\t ]*')
  # catch anything, except newline
  any='.*'
  # filter to make sure we do not delete other records
  validRecords="^${num}${w}${fulldomain}${w}TXT${w}${any}${txtvalue}$"
  for id in $(devil dns list "$domain" | tail -n+2 | grep "${validRecords}" | cut -w -s -f 1); do
    _info "Removing record $id from domain $domain"
    echo "y" | devil dns del "$domain" "$id" || _err "Could not remove DNS record."
  done
}

####################  Private functions below ##################################

# Usage: domain=$(mydevil_get_domain "_acme-challenge.www.domain.com" || _err "Invalid domain name")
#        echo $domain
mydevil_get_domain() {
  fulldomain=$1
  domain=""

  for domain in $(devil dns list | cut -w -s -f 1 | tail -n+2); do
    _debug "Checking domain: $domain"
    if _endswith "$fulldomain" "$domain"; then
      _debug "Fulldomain '$fulldomain' matches '$domain'"
      printf -- "%s" "$domain"
      return 0
    fi
  done

  return 1
}