#!/bin/bash
set -e
# Docker backup & restore script
# 
# curl -fsSL https://gist.github.com/envoyr/fcf09ef95cf372475835761ece34c44f/raw/dockup.sh -o /usr/local/bin/dockup
# sudo chmod +x /usr/local/bin/dockup
# dockup backup database /var/lib/mysql baqckup.tar

ACTION=$1
SERVICE=$2
DIRECTORY=$3
BACKUP_FILE=$4

run_backup() {
    docker run --rm --volumes-from $SERVICE -v $(pwd):/backup ubuntu tar cvf /backup/$BACKUP_FILE $DIRECTORY
    echo "Backup completed!"
}

run_restore() {
    docker run --rm --volumes-from $SERVICE -v $(pwd):/backup ubuntu bash -c "cd $DIRECTORY && tar xvf /backup/$BACKUP_FILE --strip 1"
    echo "Restore completed!"
}

run() {
    if [[ "${UID}" -ne 0 ]]; then
        echo "You need to run this script as root"
        exit 1
    fi
    
    case $ACTION in
        backup)
            run_backup
            ;;
        retsore)
            run_restore
            ;;
        *)
            echo "Please set your backup / restore method in first argument."
            exit 1
            ;;
    esac
}

run