#!/bin/bash
# info: delete dns domain
# options: USER DOMAIN
#
# example: v-delete-dns-domain alice acme.com
#
# This function for deleting DNS domain. By deleting it all records will also be
# deleted.

#----------------------------------------------------------#
#                Variables & Functions                     #
#----------------------------------------------------------#

# Argument definition
user=$1
domain=$2
restart="$3"

# Includes
# shellcheck source=/etc/hestiacp/hestia.conf
source /etc/hestiacp/hestia.conf
# shellcheck source=/usr/local/hestia/func/main.sh
source $HESTIA/func/main.sh
# shellcheck source=/usr/local/hestia/func/domain.sh
source $HESTIA/func/domain.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"

#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

format_domain
format_domain_idn

check_args '2' "$#" 'USER DOMAIN'
is_format_valid 'user' 'domain'
is_system_enabled "$DNS_SYSTEM" 'DNS_SYSTEM'
is_object_valid 'user' 'USER' "$user"
is_object_valid 'dns' 'DOMAIN' "$domain"

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

suspended=$(grep "DOMAIN='$domain'" $USER_DATA/dns.conf | grep "SUSPENDED='yes'")

dnssec=$(grep "DOMAIN='$domain'" $USER_DATA/dns.conf | grep "DNSSEC='yes'")

records=$(wc -l $USER_DATA/dns/$domain.conf | cut -f 1 -d ' ')

# Deleting system configs
if [[ "$DNS_SYSTEM" =~ named|bind ]]; then
	if [ -e '/etc/named.conf' ]; then
		dns_conf='/etc/named.conf'
	else
		dns_conf='/etc/bind/named.conf'
	fi

	sed -i "/\/$user\/conf\/dns\/$domain.db\"/d" $dns_conf
	rm -f $HOMEDIR/$user/conf/dns/$domain.db
fi

if [ -n "$dnssec" ]; then
	# Delete existing keys
	rm -fr $HOMEDIR/$user/conf/dns/$domain.db.*
	rm -fr /var/cache/bind/K$domain_idn.*
	rm -fr $USER_DATA/keys/K$domain_idn.*
fi

# Updating dns-cluster queue
if [ "$DNS_CLUSTER" = "yes" ]; then
	cmd="$BIN/v-delete-remote-dns-domain $user $domain"
	echo "$cmd" >> $HESTIA/data/queue/dns-cluster.pipe
fi

#----------------------------------------------------------#
#                       Hestia                             #
#----------------------------------------------------------#

# Deleting domain
sed -i "/DOMAIN='$domain'/ d" $USER_DATA/dns.conf
rm -f $USER_DATA/dns/$domain.conf

# Decreasing domain value
decrease_user_value "$user" '$U_DNS_DOMAINS'
decrease_user_value "$user" '$U_DNS_RECORDS' "$records"

# Restarting named
$BIN/v-restart-dns "$restart"
check_result $? "Bind restart failed" > /dev/null

# Check if is suspended to decrease the suspended value
if [ -n "$suspended" ]; then
	decrease_user_value "$user" '$SUSPENDED_DNS'
fi

# Logging
$BIN/v-log-action "$user" "Info" "DNS" "Deleted DNS zone (Name: $domain)."
log_event "$OK" "$ARGUMENTS"

exit