#!/bin/bash
#Absolute path to this script
SCRIPT=$(readlink -f $0)
#Absolute path this script is in
SCRIPTPATH=$(dirname $SCRIPT)

cd $SCRIPTPATH

if test -z "$1" && [ "$1" != "bootstrap" ] && [ "$1" != "normal" ]
then
    echo "First argument must be \"bootstap\" or normal"
    exit 1
else
    REPO="$1"
fi
test -z $2 || HOST="_$2"
test -z $3 || INSTANCE="_$3"
test -f ~/secrets.tar.gz.enc || { echo "ERROR: ~/secrets.tar.gz.enc not found, exiting."; exit 1; }
openssl enc -aes-256-cbc -d -in ~/secrets.tar.gz.enc \
| sudo tar -zxv --strip 2 secrets/docker-mysql-stack${HOST}${INSTANCE}/debian.cnf \
|| { echo "Could not extract from secrets archive, exiting."; rm -f ~/secrets.tar.gz.enc; exit 1; }
sudo chown root. debian.cnf

if [ "$REPO" == "bootstrap" ]
then
    test -f ~/openrc.sh || { echo "ERROR: ~/openrc.sh not found, exiting."; exit 1; }
    source ~/openrc.sh
    export OS_REGION_NAME=GRA
    test -f ~/duplicity_password.sh || { echo "ERROR: ~/duplicity_password.sh not found, exiting."; exit 1; }
    source ~/duplicity_password.sh
    
    sudo docker image inspect duplicity:latest &> /dev/null ||{ echo "ERROR: duplicity:latest image not found, exiting."; exit 1; }
    
    rm -rf ~/build
    mkdir -p ~/build
    for name in docker-mysql
    do  
        sudo -E docker run --rm -e SWIFT_USERNAME=$OS_USERNAME \
                                -e SWIFT_PASSWORD=$OS_PASSWORD \
                                -e SWIFT_AUTHURL=$OS_AUTH_URL \
                                -e SWIFT_AUTHVERSION=$OS_IDENTITY_API_VERSION \
                                -e SWIFT_TENANTNAME=$OS_TENANT_NAME \
                                -e SWIFT_REGIONNAME=$OS_REGION_NAME \
                                -e PASSPHRASE=$PASSPHRASE \
          --name backup-restore -v ~/build:/mnt/build --entrypoint /bin/bash duplicity:latest \
          -c "duplicity restore --name bootstrap --file-to-restore ${name}.tar.gz swift://bootstrap /mnt/build/${name}.tar.gz"
        tar -xzf ~/build/${name}.tar.gz -C ~/build/
    done
    
    unset VERSION_MYSQL
    DIRECTORY=$(pwd)
    cd ~/build/docker-mysql; export VERSION_MYSQL=$(git show-ref --head| head -1 | cut -f 1|cut -c -10); cd $DIRECTORY
else
    unset VERSION_MYSQL
    export VERSION_MYSQL=$(git ls-remote https://git.scimetis.net/yohan/docker-mysql.git| head -1 | cut -f 1|cut -c -10)
    rm -rf ~/build
    mkdir -p ~/build
    git clone https://git.scimetis.net/yohan/docker-mysql.git ~/build/docker-mysql
fi

sudo docker build -t mysql-server:$VERSION_MYSQL ~/build/docker-mysql

sudo -E bash -c 'docker-compose up --no-start --force-recreate'
# --force-recreate is used to recreate container when a file has changed
# We cannot remove the secrets files or restarting the container would become impossible
# rm -f debian.cnf
rm -rf ~/build