#!/bin/bash
# info: delete mail account alias aka nickname
# options: USER DOMAIN ACCOUNT ALIAS
#
# example: v-delete-mail-account-alias admin example.com alice alicia
#
# This function deletes email account alias.

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

# Argument definition
user=$1
domain=$2
domain_idn=$2
account=$3
malias=$4

# 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"

# Additional argument formatting
format_domain
format_domain_idn

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

check_args '4' "$#" 'USER DOMAIN ACCOUNT ALIAS'
is_format_valid 'user' 'domain' 'account' 'malias'
is_system_enabled "$MAIL_SYSTEM" 'MAIL_SYSTEM'
is_object_valid 'user' 'USER' "$user"
is_object_valid 'mail' 'DOMAIN' "$domain"
is_object_valid "mail/$domain" 'ACCOUNT' "$account"
aliases=$(get_object_value "mail/$domain" 'ACCOUNT' "$account" '$ALIAS')
if [ -z "$(echo $aliases | grep -w $malias)" ]; then
	echo "Error: alias $malias doesn't exist"
	log_event "$E_NOTEXIST $ARGUMENTS"
	exit "$E_NOTEXIST"
fi

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

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

if [[ "$MAIL_SYSTEM" =~ exim ]]; then
	sed -i "/^$malias@$domain_idn:$account/d" \
		$HOMEDIR/$user/conf/mail/$domain/aliases
fi

aliases=$(echo "$aliases" \
	| sed "s/,/\n/g" \
	| sed "s/^$malias$//g" \
	| sed "/^$/d" \
	| sed ':a;N;$!ba;s/\n/,/g')

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

# Update config
update_object_value "mail/$domain" 'ACCOUNT' "$account" '$ALIAS' "$aliases"

# Logging
$BIN/v-log-action "$user" "Info" "Mail" "Mail account alias removed (Alias: $malias, User: $account@$domain)."
log_event "$OK" "$ARGUMENTS"

exit