#!/bin/bash
# info: delete mail account alias aka nickname
# options: USER DOMAIN ACCOUNT ALIAS
#
# The function deletes email account alias.


#----------------------------------------------------------#
#                    Variable&Function                     #
#----------------------------------------------------------#

# Argument defenition
user=$1
domain=$(idn -t --quiet -u "$2" )
domain=$(echo $domain | tr '[:upper:]' '[:lower:]')
domain_idn=$(idn -t --quiet -a "$domain")
account=$3
malias=$4

# Includes
source $VESTA/func/main.sh
source $VESTA/func/domain.sh
source $VESTA/conf/vesta.conf


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

check_args '4' "$#" 'USER DOMAIN ACCOUNT ALIAS'
validate_format 'user' 'domain' 'account' 'malias'
is_system_enabled "$MAIL_SYSTEM" 'MAIL_SYSTEM'
is_object_valid 'user' 'USER' "$user"
is_object_unsuspended 'user' 'USER' "$user"
is_object_valid 'mail' 'DOMAIN' "$domain"
is_object_unsuspended 'mail' 'DOMAIN' "$domain"
is_object_valid "mail/$domain" 'ACCOUNT' "$account"
is_object_unsuspended "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 $EVENT"
    exit $E_NOTEXIST
fi


#----------------------------------------------------------#
#                       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')


#----------------------------------------------------------#
#                       Vesta                              #
#----------------------------------------------------------#

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

# Logging
log_history "deleted alias $malias on $account@$domain"
log_event "$OK" "$EVENT"

exit