#!/bin/bash -e

baseDir() {
	# see https://stackoverflow.com/questions/59895
	SOURCE=${BASH_SOURCE[0]}
	while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
		DIR=$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )
		SOURCE=$(readlink "$SOURCE")
		[[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
	done
	DIR=$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )
	echo $DIR
}

BASE=$(baseDir)
cd $BASE

source ./lib/functions.sh

ACTION=$1
export PROJECT=$2

if [[ -z $1 || -z $2 ]]; then
	printUsage
	exit 1
fi

case "$PROJECT" in
	ccp)
		#nothing extra to do
		;;
	bbmri)
		#nothing extra to do
		;;
	cce)
		#nothing extra to do
		;;
	itcc)
		#nothing extra to do
		;;
	kr)
		#nothing extra to do
		;;
	dhki)
		#nothing extra to do
		;;
	minimal)
		#nothing extra to do
		;;
	*)
		printUsage
		exit 1
		;;
esac

# Loads config variables and runs the projects setup script
loadVars() {
	set -a
	# Source the project specific config file
	source /etc/bridgehead/$PROJECT.conf || fail_and_report 1 "/etc/bridgehead/$PROJECT.conf not found"
	# Source the project specific local config file if present
	# This file is ignored by git as oposed to the regular config file as it contains private site information like etl auth data
	if [ -e /etc/bridgehead/$PROJECT.local.conf ]; then
		log INFO "Applying /etc/bridgehead/$PROJECT.local.conf"
		source /etc/bridgehead/$PROJECT.local.conf || fail_and_report 1 "Found /etc/bridgehead/$PROJECT.local.conf but failed to import"
	fi
	# Set execution environment on main default to prod else test
	if [[ -z "${ENVIRONMENT+x}" ]]; then
		if [ "$(git rev-parse --abbrev-ref HEAD)" == "main" ]; then
			ENVIRONMENT="production"
		else
			ENVIRONMENT="test"
		fi
	fi
	# Source the versions of the images components 
	case "$ENVIRONMENT" in
		"production")
			source ./versions/prod
			;;
		"test")
			source ./versions/test
			;;
		*)
			report_error 7 "Environment \"$ENVIRONMENT\" is unknown. Assuming production. FIX THIS!"
			source ./versions/prod
			;;
	esac
	fetchVarsFromVaultByFile /etc/bridgehead/$PROJECT.conf || fail_and_report 1 "Unable to fetchVarsFromVaultByFile"
	setHostname
	optimizeBlazeMemoryUsage
	# Run project specific setup if it exists
	# This will ususally modiy the `OVERRIDE` to include all the compose files that the project depends on
	# This is also where projects specify which modules to load
	[ -e ./$PROJECT/vars ] && source ./$PROJECT/vars
	set +a

	OVERRIDE=${OVERRIDE:=""}
	# minimal contains shared components, so potential overrides must be applied in every project
	if [ -f "minimal/docker-compose.override.yml" ]; then
		log INFO "Applying Bridgehead common components override (minimal/docker-compose.override.yml)"
		OVERRIDE+=" -f ./minimal/docker-compose.override.yml"
	fi
	if [ -f "$PROJECT/docker-compose.override.yml" ]; then
		log INFO "Applying $PROJECT/docker-compose.override.yml"
		OVERRIDE+=" -f ./$PROJECT/docker-compose.override.yml"
	fi
	detectCompose
	setupProxy
}

case "$ACTION" in
	start)
		loadVars
		hc_send log "Bridgehead $PROJECT startup: Checking requirements ..."
		checkRequirements
		sync_secrets
		hc_send log "Bridgehead $PROJECT startup: Requirements checked out. Now starting bridgehead ..."
		exec $COMPOSE -p $PROJECT -f ./minimal/docker-compose.yml -f ./$PROJECT/docker-compose.yml $OVERRIDE up --abort-on-container-exit
		;;
	stop)
		loadVars
		# Kill stale secret-sync instances if present
		docker kill $(docker ps -q --filter ancestor=docker.verbis.dkfz.de/cache/samply/secret-sync-local) 2>/dev/null || true
		# HACK: This is temporarily to properly shut down false bridgehead instances (bridgehead-ccp instead ccp)
		$COMPOSE -p bridgehead-$PROJECT -f ./minimal/docker-compose.yml -f ./$PROJECT/docker-compose.yml $OVERRIDE down
		exec $COMPOSE -p $PROJECT -f ./minimal/docker-compose.yml -f ./$PROJECT/docker-compose.yml $OVERRIDE down
		;;
	is-running)
		bk_is_running
		exit $?
		;;
	logs)
		loadVars
		shift 2
		exec journalctl -u bridgehead@$PROJECT -u bridgehead-update@$PROJECT -a $@
		;;
	docker-logs)
		loadVars
		shift 2
		exec $COMPOSE -p $PROJECT -f ./minimal/docker-compose.yml -f ./$PROJECT/docker-compose.yml $OVERRIDE logs -f $@
		;;
	update)
		loadVars
		exec ./lib/update-bridgehead.sh $PROJECT
		;;
	install)
		source ./lib/prepare-system.sh NODEV
		loadVars
		exec ./lib/install-bridgehead.sh $PROJECT
		;;
	dev-install)
		exec ./lib/prepare-system.sh DEV
		loadVars
		exec ./lib/install-bridgehead.sh $PROJECT
		;;
	uninstall)
		exec ./lib/uninstall-bridgehead.sh $PROJECT
		;;
	adduser)
		loadVars
		log "INFO" "Adding encrypted credentials in /etc/bridgehead/$PROJECT.local.conf"
    		read -p "Please choose the component (LDM_AUTH|NNGM_AUTH) you want to add a user to : " COMPONENT
    		read -p "Please enter a username: " USER
    		read -s -p "Please enter a password (will not be echoed): "$'\n' PASSWORD
    		add_basic_auth_user $USER $PASSWORD $COMPONENT $PROJECT
		;;
	enroll)
		loadVars
		do_enroll $PROXY_ID
		;;
	preRun | preUpdate)
		fixPermissions
		;;
	postRun | postUpdate)
		;;
	*)
		printUsage
		exit 1
		;;
esac

exit 0