# GRAVITY SYNC BY VMSTAN #####################
# gs-config.sh ###############################

# For documentation or downloading updates visit https://github.com/vmstan/gravity-sync
# This code is called from the main gravity-sync.sh file and should not execute directly!

## Configure Task
function task_configure {				
	TASKTYPE='CONFIGURE'
	MESSAGE="${MESSAGE}: ${TASKTYPE} Requested"
	echo_good
	
	if [ -f $HOME/${LOCAL_FOLDR}/${CONFIG_FILE} ]
	then		
		config_delete
	else
		MESSAGE="No Active ${CONFIG_FILE}"
		echo_warn
		
		config_generate
	fi

	backup_settime
	backup_local_gravity
	backup_local_custom
	backup_cleanup
	
	exit_withchange
}

## Generate New Configuration
function config_generate {
	detect_ssh
	
	MESSAGE="Creating ${CONFIG_FILE} from Template"
	echo_stat
	cp $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}.example $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
	error_validate

	MESSAGE="Environment Customization"
	echo_info

	MESSAGE="Enter a custom SSH port if required (Leave blank for default '22')"
	echo_need
	read INPUT_SSH_PORT
	INPUT_SSH_PORT="${INPUT_SSH_PORT:-22}"

	if [ "${INPUT_SSH_PORT}" != "22" ]
	then
		MESSAGE="Saving Custom SSH Port to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# SSH_PORT=''/c\SSH_PORT='${INPUT_SSH_PORT}'" $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi

	MESSAGE="Perform PING tests between Pi-holes? (Leave blank for default 'Yes')"
	echo_need
	read INPUT_PING_AVOID
	INPUT_PING_AVOID="${INPUT_PING_AVOID:-Y}"

	if [ "${INPUT_PING_AVOID}" != "Y" ]
	then
		MESSAGE="Saving Ping Avoidance to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# PING_AVOID=''/c\PING_AVOID='1'" $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
		PING_AVOID=1
	fi
	
	MESSAGE="Standard Settings"
	echo_info

	MESSAGE="IP or DNS of Primary Pi-hole"
	echo_need
	read INPUT_REMOTE_HOST

	if [ "${PING_AVOID}" != "1" ]
	then
		MESSAGE="Testing Network Connection (PING)"
		echo_stat
		ping -c 3 ${INPUT_REMOTE_HOST} >/dev/null 2>&1
			error_validate
	else
		MESSAGE="Bypassing Network Testing (PING)"
		echo_warn
	fi
	
	MESSAGE="SSH User with SUDO rights"
	echo_need
	read INPUT_REMOTE_USER
	
	MESSAGE="Saving Host to ${CONFIG_FILE}"
	echo_stat
	sed -i "/REMOTE_HOST='192.168.1.10'/c\REMOTE_HOST='${INPUT_REMOTE_HOST}'" $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
	error_validate
	
	MESSAGE="Saving User to ${CONFIG_FILE}"
	echo_stat
	sed -i "/REMOTE_USER='pi'/c\REMOTE_USER='${INPUT_REMOTE_USER}'" $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
	error_validate

	if hash sshpass 2>/dev/null
	then
		MESSAGE="SSHPASS Utility Detected"
		echo_warn
			if hash ssh 2>/dev/null
			then
				MESSAGE="Please Reference Documentation"
				echo_info

				MESSAGE="${BLUE}https://github.com/vmstan/gravity-sync/blob/master/ADVANCED.md#ssh-configuration${NC}"
				echo_info

				MESSAGE="Leave password blank to use key-pair! (reccomended)"
				echo_warn
				
				MESSAGE="SSH User Password"
				echo_need
				read INPUT_REMOTE_PASS
				
				MESSAGE="Saving Password to ${CONFIG_FILE}"
				echo_stat
				sed -i "/REMOTE_PASS=''/c\REMOTE_PASS='${INPUT_REMOTE_PASS}'" $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
					error_validate
			fi	
	fi

	generate_sshkey
	
	MESSAGE="Importing New ${CONFIG_FILE}"
	echo_stat
	source $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
	error_validate

	export_sshkey	
	
	MESSAGE="Testing Configuration"
	echo_info

	validate_os_sshpass
	validate_sqlite3

	detect_remotersync
}

## Delete Existing Configuration
function config_delete {
	source $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
	MESSAGE="Configuration File Exists"
	echo_warn
	
	echo -e "========================================================"
	cat $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
	echo -e "========================================================"
	
	MESSAGE="Are you sure you want to erase this configuration?"
	echo_warn

	intent_validate

	MESSAGE="Erasing Existing Configuration"
	echo_stat
	rm -f $HOME/${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate

	config_generate
}