# 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 ${LOCAL_FOLDR}/${CONFIG_FILE} ]
	then		
		config_delete
	else
		config_generate
	fi

	# backup_settime
	# backup_local_gravity
	# backup_local_custom
	# backup_cleanup
	
	create_alias
	
	exit_withchange
}

## Generate New Configuration
function config_generate {
	# detect_ssh
	
	MESSAGE="Creating New ${CONFIG_FILE} from Template"
	echo_stat
	cp ${LOCAL_FOLDR}/${CONFIG_FILE}.example ${LOCAL_FOLDR}/${CONFIG_FILE}
	error_validate
	
	docker_detect
	if [ "${DOCKERREADY}" == "1" ]
	then
		MESSAGE="Advanced Configuration Required"
		echo_info
		advanced_config_generate
	else
		MESSAGE="Use Advanced Installation Options? (Leave blank for default 'No')"
		echo_need
		read INPUT_ADVANCED_INSTALL
		INPUT_ADVANCED_INSTALL="${INPUT_ADVANCED_INSTALL:-N}"
	
		if [ "${INPUT_ADVANCED_INSTALL}" != "N" ]
		then
			MESSAGE="Advanced Configuration Selected"
			echo_info
		
			advanced_config_generate
		fi
	fi
	
	MESSAGE="Standard Settings"
	echo_info

	MESSAGE="Primary Pi-hole Address (IP or DNS)"
	echo_need
	read INPUT_REMOTE_HOST

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

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

	export_sshkey	
	
	# MESSAGE="Testing Configuration"
	# echo_info

	# validate_os_sshpass
	# validate_sqlite3

	# detect_remotersync
}

## Advanced Configuration Options
function advanced_config_generate {
	MESSAGE="Local Pi-hole in Docker Container? (Leave blank for default 'No')"
	echo_need
	read INPUT_PH_IN_TYPE
	INPUT_PH_IN_TYPE="${INPUT_PH_IN_TYPE:-N}"
	
	if [ "${INPUT_PH_IN_TYPE}" != "N" ]
	then
		MESSAGE="Saving Local Docker Setting to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# PH_IN_TYPE=''/c\PH_IN_TYPE='docker'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
		
		MESSAGE="Local Docker Container Name? (Leave blank for default 'pihole')"
		echo_need
		read INPUT_DOCKER_CON
		INPUT_DOCKER_CON="${INPUT_DOCKER_CON:-pihole}"
		
		if [ "${INPUT_DOCKER_CON}" != "pihole" ]
		then
			MESSAGE="Saving Local Container Name to ${CONFIG_FILE}"
			echo_stat
			sed -i "/# DOCKER_CON=''/c\DOCKER_CON='${INPUT_DOCKER_CON}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
			error_validate
		fi
		
		MESSAGE="Local Pi-hole 'etc' Volume Path? (Required, no trailing slash)"
		echo_need
		read INPUT_PIHOLE_DIR
		
		if [ "${INPUT_PIHOLE_DIR}" != "" ]
		then
			MESSAGE="Saving Local Pi-hole Volume to ${CONFIG_FILE}"
			echo_stat
			sed -i "/# PIHOLE_DIR=''/c\PIHOLE_DIR='${INPUT_PIHOLE_DIR}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
			error_validate
			SKIP_PIHOLE_DIR="1"
		else
			MESSAGE="This setting is required!"
			echo_warn
			exit_withchanges
		fi
		
		MESSAGE="Saving Local Volume Ownership to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# FILE_OWNER=''/c\FILE_OWNER='named:docker'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi
	
	MESSAGE="Remote Pi-hole in Docker Container? (Leave blank for default 'No')"
	echo_need
	read INPUT_RH_IN_TYPE
	INPUT_RH_IN_TYPE="${INPUT_RH_IN_TYPE:-N}"
	
	if [ "${INPUT_RH_IN_TYPE}" != "N" ]
	then
		MESSAGE="Saving Remote Docker Setting to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# RH_IN_TYPE=''/c\RH_IN_TYPE='docker'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
		
		MESSAGE="Remote Docker Container Name? (Leave blank for default 'pihole')"
		echo_need
		read INPUT_ROCKER_CON
		INPUT_ROCKER_CON="${INPUT_ROCKER_CON:-pihole}"
		
		if [ "${INPUT_ROCKER_CON}" != "pihole" ]
		then
			MESSAGE="Saving Remote Container Name to ${CONFIG_FILE}"
			echo_stat
			sed -i "/# ROCKER_CON=''/c\ROCKER_CON='${INPUT_ROCKER_CON}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
			error_validate
		fi
		
		MESSAGE="Remote Pi-hole 'etc' Volume Path? (Required, no trailing slash)"
		echo_need
		read INPUT_RIHOLE_DIR
		
		if [ "${INPUT_RIHOLE_DIR}" != "" ]
		then
			MESSAGE="Saving Remote Pi-hole Volume to ${CONFIG_FILE}"
			echo_stat
			sed -i "/# RIHOLE_DIR=''/c\RIHOLE_DIR='${INPUT_RIHOLE_DIR}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
			error_validate
			SKIP_RIHOLE_DIR="1"
		else
			MESSAGE="This setting is required!"
			echo_warn
			exit_withchanges
		fi
		
		MESSAGE="Saving Remote Volume Ownership to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# RILE_OWNER=''/c\RILE_OWNER='named:docker'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi
	
		
	if [ $SKIP_PIHOLE_DIR != "1" ]
	then
		MESSAGE="Local Pi-hole Settings Directory Path? (Leave blank for default '/etc/pihole')"
		echo_need
		read INPUT_PIHOLE_DIR
		INPUT_PIHOLE_DIR="${INPUT_PIHOLE_DIR:-/etc/pihole}"
		
		if [ "${INPUT_PIHOLE_DIR}" != "/etc/pihole" ]
		then
			MESSAGE="Saving Local Pi-hole Settings Directory Path to ${CONFIG_FILE}"
			echo_stat
			sed -i "/# PIHOLE_DIR=''/c\PIHOLE_DIR='${INPUT_PIHOLE_DIR}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
			error_validate
		fi
	fi
	
	if [ "$SKIP_RIHOLE_DIR" != "1" ]
	then
		MESSAGE="Remote Pi-hole Settings Directory Path? (Leave blank for default '/etc/pihole')"
		echo_need
		read INPUT_RIHOLE_DIR
		INPUT_RIHOLE_DIR="${INPUT_RIHOLE_DIR:-/etc/pihole}"
		
		if [ "${INPUT_RIHOLE_DIR}" != "/etc/pihole" ]
		then
			MESSAGE="Saving Remote Pi-hole Settings Directory Path to ${CONFIG_FILE}"
			echo_stat
			sed -i "/# RIHOLE_DIR=''/c\RIHOLE_DIR='${INPUT_RIHOLE_DIR}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
			error_validate
		fi
	fi
	
	MESSAGE="Use Custom SSH Port? (Leave blank for default '22')"
	echo_need
	read INPUT_SSH_PORT
	INPUT_SSH_PORT="${INPUT_SSH_PORT:-22}"
	SSH_PORT="${INPUT_SSH_PORT}"
	
	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}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi
	
	MESSAGE="Enable ICMP Check? (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 ICMP Avoidance to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# PING_AVOID=''/c\PING_AVOID='1'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
		PING_AVOID=1
	fi
		
	MESSAGE="Use Custom SSH PKIF Location? (Leave blank for default '.ssh/id_rsa')"
	echo_need
	read INPUT_CUSTOM_PKIF
	INPUT_CUSTOM_PKIF="${INPUT_CUSTOM_PKIF:-.ssh/id_rsa}"
		
	if [ "${INPUT_CUSTOM_PKIF}" != ".ssh/id_rsa" ]
	then
		MESSAGE="Saving Custom PKIF to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# SSH_PKIF=''/c\SSH_PKIF='${INPUT_CUSTOM_PKIF}'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi
	
	MESSAGE="Enable Replicate 'Local DNS Records' Feature? (Leave blank for default 'Yes')"
	echo_need
	read INPUT_SKIP_CUSTOM
	INPUT_SKIP_CUSTOM="${INPUT_SKIP_CUSTOM:-Y}"
	
	if [ "${INPUT_SKIP_CUSTOM}" != "Y" ]
	then
		MESSAGE="Saving Local DNS Preference to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# SKIP_CUSTOM=''/c\SKIP_CUSTOM='1'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi
	
	MESSAGE="Change Backup Retention in Days? (Leave blank for default '7')"
	echo_need
	read INPUT_BACKUP_RETAIN
	INPUT_BACKUP_RETAIN="${INPUT_BACKUP_RETAIN:-7}"
	
	if [ "${INPUT_BACKUP_RETAIN}" != "7" ]
	then
		MESSAGE="Saving Backup Retention to ${CONFIG_FILE}"
		echo_stat
		sed -i "/# BACKUP_RETAIN=''/c\BACKUP_RETAIN='1'" ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate
	fi
}

## Delete Existing Configuration
function config_delete {
	source ${LOCAL_FOLDR}/${CONFIG_FILE}
	MESSAGE="Configuration File Exists"
	echo_warn
	
	echo -e "========================================================"
	cat ${LOCAL_FOLDR}/${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 ${LOCAL_FOLDR}/${CONFIG_FILE}
		error_validate

	config_generate
}

## Detect Docker
function docker_detect {
	if hash docker 2>/dev/null
	then
		FTLCHECK=$(sudo docker container ls | grep 'pihole/pihole')
		if [ "$FTLCHECK" != "" ]
		then
			DOCKERREADY="1"
		fi
	fi
}

## Create Bash Alias
function create_alias {
	MESSAGE="Creating Bash Alias"
	echo_stat
	
	echo -e "alias gravity-sync='${GS_FILEPATH}'" | sudo tee -a /etc/bash.bashrc > /dev/null
		error_validate
}