#!/usr/bin/env sh
#
#Author: Wolfgang Ebner
#Report Bugs here: https://github.com/webner/acme.sh
#
########  Public functions #####################

#Usage: dns_acmedns_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_acmedns_add() {
  fulldomain=$1
  txtvalue=$2
  _info "Using acme-dns"
  _debug fulldomain "$fulldomain"
  _debug txtvalue "$txtvalue"

  ACMEDNS_URL="${ACMEDNS_URL:-$(_readaccountconf_mutable ACMEDNS_URL)}"

  if [ "$ACMEDNS_URL" = "" ]; then
    ACMEDNS_URL="https://auth.acme-dns.io"
  fi

  _saveaccountconf_mutable ACMEDNS_URL "$ACMEDNS_URL"
  
  confdomain=`echo "$fulldomain" | sed 's/[-.]/_/g'`
  _debug confdomain "$confdomain"
  data="$(_readaccountconf_mutable ACMEDNS_DATA_$confdomain)"
  _debug data "$data"
  if [ "$data" = "" ]; then
    # Register a new domain
    response="$(_post "" "${ACMEDNS_URL}/register" "" "POST")"
    ad_username=`echo "$response" | sed 's/.*"username":"\([^"]*\)".*/\1/'`
    ad_password=`echo "$response" | sed 's/.*"password":"\([^"]*\)".*/\1/'`
    ad_subdomain=`echo "$response" | sed 's/.*"subdomain":"\([^"]*\)".*/\1/'`
    ad_fulldomain=`echo "$response" | sed 's/.*"fulldomain":"\([^"]*\)".*/\1/'`
    
    _err "Please add the following DNS record to $fulldomain: CNAME $ad_fulldomain"
    _err "Press ENTER to continue."
    read _
    
    # Save the domain data
    _saveaccountconf_mutable "ACMEDNS_DATA_$confdomain" "$ad_username $ad_password $ad_subdomain"
  else
    set -- $data
    ad_username=$1
    ad_password=$2
    ad_subdomain=$3
  fi
  
  _debug ad_username "$ad_username"
  _debug ad_password "$ad_password"
  _debug ad_subdomain "$ad_subdomain"
  
  if [ "$ad_username" = "" ]; then
  	_err "Error getting username for acme_dns"
  	return 1
  fi
  if [ "$ad_password" = "" ]; then
  	_err "Error getting password for acme_dns"
  	return 1
  fi
  if [ "$ad_subdomain" = "" ]; then
  	_err "Error getting subdomain for ame_dns"
  	return 1
  fi
  
  export _H1="X-Api-User: $ad_username"
  export _H2="X-Api-Key: $ad_password"
  data="{\"subdomain\":\"$ad_subdomain\", \"txt\": \"$txtvalue\"}"

  _debug data "$data"
  response="$(_post "$data" "${ACMEDNS_URL}/update" "" "POST")"
  _debug response "$response"

  if ! echo "$response" | grep "\"$txtvalue\"" >/dev/null; then
    _err "invalid response of acme-dns"
    return 1
  fi

}

#Usage: fulldomain txtvalue
#Remove the txt record after validation.
dns_acmedns_rm() {
  fulldomain=$1
  txtvalue=$2
  _info "Using acme-dns"
  _debug fulldomain "$fulldomain"
  _debug txtvalue "$txtvalue"
}

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