#!/bin/bash
# info: add webmail support for a domain
# options: USER DOMAIN [WEBMAIL] [RESTART] [QUIET]
#
# example: v-add-sys-webmail user domain.com
# example: v-add-sys-webmail user domain.com snappymail
# example: v-add-sys-webmail user domain.com roundcube
#
# This function enables webmail client for a mail domain.

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

# Argument definition
user=$1
domain=$2
webmail=$3
restart="$4"
quiet=$5

if [ -z "$restart" ]; then
	restart="yes"
fi

# Additional argument formatting
if [[ "$domain" =~ [[:upper:]] ]]; then
	domain=$(echo "$domain" | tr '[:upper:]' '[:lower:]')
fi
if [[ "$domain" =~ ^www\..* ]]; then
	domain=$(echo "$domain" | sed -e "s/^www.//")
fi
if [[ "$domain" =~ .*\.$ ]]; then
	domain=$(echo "$domain" | sed -e "s/\.$//")
fi

# 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
# shellcheck source=/usr/local/hestia/func/ip.sh
source $HESTIA/func/ip.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"

# Additional argument formatting
format_domain
format_domain_idn

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

if [ -z "$webmail" ]; then
	for client in ${WEBMAIL_SYSTEM//,/ }; do
		webmail="$client"
	done
fi

check_args '2' "$#" 'USER DOMAIN [WEBMAIL] [RESTART]'
is_format_valid 'user' 'domain' 'restart'
is_system_enabled "$WEB_SYSTEM" 'WEB_SYSTEM'
is_system_enabled "$IMAP_SYSTEM" 'IMAP_SYSTEM'
is_type_valid "$WEBMAIL_SYSTEM disabled" "$webmail"
is_object_valid 'user' 'USER' "$user"
is_object_unsuspended 'user' 'USER' "$user"
is_object_valid 'mail' 'DOMAIN' "$domain"
is_object_unsuspended 'mail' 'DOMAIN' "$domain"

# Perform verification if read-only mode is enabled
check_hestia_demo_mode

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

# Inherit web domain local ip address
domain_ip=$(get_object_value 'web' 'DOMAIN' "$domain" '$IP')
if [ -n "$domain_ip" ]; then
	local_ip=$(get_real_ip "$domain_ip")
	is_ip_valid "$local_ip" "$user"

	ip=$local_ip
	nat_ip=$(get_ip_value '$NAT')
	if [ -n "$nat_ip" ]; then
		ip=$nat_ip
	fi
else
	get_user_ip
fi

# Verify that webmail alias variable exists and create it if it does not
if [ -z "$WEBMAIL_ALIAS" ]; then
	$BIN/v-change-sys-config-value 'WEBMAIL_ALIAS' "webmail"
else
	# Ensure DNS record exists if Hestia is hosting DNS zones
	if [ -n "$DNS_SYSTEM" ]; then
		dns_domain=$($BIN/v-list-dns-domains $user | grep $domain | cut -d' ' -f1)
		webmail_record=$($BIN/v-list-dns-records $user $domain | grep -i " $WEBMAIL_ALIAS " | cut -d' ' -f1)
		if [ "$dns_domain" = "$domain" ]; then
			if [ "$WEBMAIL_ALIAS" != "mail" ]; then
				#Prevent mail.domain.com to be cycled
				if [ -z "$webmail_record" ]; then
					if [ "$quiet" = "yes" ]; then
						$BIN/v-add-dns-record "$user" "$domain" "$WEBMAIL_ALIAS" A "$ip" '' '' "$restart" '' 'yes'
					else
						$BIN/v-add-dns-record "$user" "$domain" "$WEBMAIL_ALIAS" A "$ip" '' '' "$restart" '' 'yes'
					fi
				else
					if [ "$quiet" = "yes" ]; then
						$BIN/v-delete-dns-record "$user" "$domain" "$webmail_record" "$restart" 'yes'
						$BIN/v-add-dns-record "$user" "$domain" "$WEBMAIL_ALIAS" A "$ip" '' '' "$restart" '' 'yes'
					else
						$BIN/v-delete-dns-record "$user" "$domain" "$webmail_record" "$restart" 'yes'
						$BIN/v-add-dns-record "$user" "$domain" "$WEBMAIL_ALIAS" A "$ip" '' '' "$restart" '' 'yes'
					fi
				fi
			fi
		fi
	fi

	if [ "$webmail" == "roundcube" ]; then
		WEBMAIL_TEMPLATE="default"
		if [ -n "$PROXY_SYSTEM" ]; then
			PROXY_TEMPLATE="default"
		fi
		# Add webmail configuration to mail domain
		WEBMAIL_TEMPLATE="default"
		if [ "$WEB_SYSTEM" = "nginx" ]; then
			WEBMAIL_TEMPLATE="web_system"
		fi
	elif [ -f "$HESTIA/data/templates/mail/$WEB_SYSTEM/$webmail.tpl" ]; then
		WEBMAIL_TEMPLATE="$webmail"
		if [ -n "$PROXY_SYSTEM" ]; then
			PROXY_TEMPLATE="default_$webmail"
		fi
	else
		WEBMAIL_TEMPLATE="disabled"
		if [ -n "$PROXY_SYSTEM" ]; then
			PROXY_TEMPLATE="default_disabled"
		fi
	fi

	add_webmail_config "$WEB_SYSTEM" "${WEBMAIL_TEMPLATE}.tpl"

	if [ -n "$PROXY_SYSTEM" ]; then
		add_webmail_config "$PROXY_SYSTEM" "${PROXY_TEMPLATE}.tpl"
	fi

	# Enable SSL for webmail if available
	if [ -f $HOMEDIR/$user/conf/mail/$domain/ssl/$domain.crt ] || [ "$SSL" = 'yes' ]; then
		add_webmail_config "$WEB_SYSTEM" "${WEBMAIL_TEMPLATE}.stpl"

		if [ -n "$PROXY_SYSTEM" ]; then
			add_webmail_config "$PROXY_SYSTEM" "${PROXY_TEMPLATE}.stpl"
		fi
	fi
fi

WEBMAIL=$(get_object_value 'web' 'DOMAIN' "$domain" "$WEBMAIL")
if [ -z "$WEBMAIL" ]; then
	add_object_key 'mail' 'DOMAIN' "$domain" 'WEBMAIL' 'SSL'
fi

# Set SSL as enabled in configuration
update_object_value 'mail' 'DOMAIN' "$domain" '$WEBMAIL' "$webmail"

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

if [ "$restart" = 'yes' ]; then
	# Restarting web server
	$BIN/v-restart-web "$restart"
	check_result $? "Web restart failed" > /dev/null

	$BIN/v-restart-proxy "$restart"
	check_result $? "Proxy restart failed" > /dev/null
fi

# Logging
if [ "$quiet" != 'yes' ]; then
	$BIN/v-log-action "$user" "Info" "Mail" "Webmail access enabled (Domain: $domain)."
fi
log_event "$OK" "$ARGUMENTS"

exit