#!/bin/bash

set -e

DOCKINGDIR=/home/miguel/docking
BACKUPDIR=/home/miguel/BACKUP
BACKUPSCRIPT=/home/miguel/git/admin/docker_tools/docker_backup_offline_vol.sh
TIMESTAMP=`date +"%Y%m%d_%H%M%S"`

DOCKS=`ls $DOCKINGDIR`

function backup_dock {

	SOURCE=$1
	TARGET=$2

	mkdir -p $TARGET

	CONTAINERS=`cd $SOURCE && docker-compose ps -q`
	ALLVOLUMES=

	for c in $CONTAINERS
	do


		NAME=`docker inspect -f '{{ .Name }}' $c | sed 's/\///'`
		echo container = [$NAME]
		
		docker inspect $c > $TARGET/$NAME.json

		VOLUMES=`docker inspect -f '{{ range .Mounts }}{{.Name}} {{end}}' $c`

		for v in $VOLUMES
		do
			ALLVOLUMES+="$v "
		done

	done
	
	# remove duplicates
	ALLVOLUMES=`echo $ALLVOLUMES | tr ' ' '\n' | sort | uniq`

	## STOP ##
	cd $SOURCE
	set +e
	docker-compose down
	set -e
	##

	tar -C $SOURCE -cf $TARGET/compose.tar .

	cd $TARGET
    	sudo chown 100000 .

	for v in $ALLVOLUMES
	do
		echo volume = [$v]
	        $BACKUPSCRIPT  $v $v.tar
	done

	## START ##
	cd $SOURCE
	docker-compose up -d
	##

}


########### CYCLE THROUGH ALl DOCKS ##############

for d in $DOCKS
do
	# SKIP xxx FOLDER!
	if [ "$d" == "xxx" ]; then
		continue
	fi
		echo dock = [$d]
		backup_dock $DOCKINGDIR/$d $BACKUPDIR/$TIMESTAMP/$d 
done


### make sure nginx is restarted at the end
echo "restart nginx rev proxy!"

cd /home/miguel/docking/http_rev_proxy
docker-compose down
docker-compose up -d

echo "tar result"
cd $BACKUPDIR
tar -cf $TIMESTAMP.tar $BACKUPDIR/$TIMESTAMP
echo "READY"