#!/bin/bash


BASEDIR=$PWD
TAG=$(cat /opt/debian-bash/.semver_git_tag)

function usage {
	echo 'usage: --host | --containers | --full | --one-container <CT_NAME>'
	exit -1
}

function install_host {
    echo "install on: $HOSTNAME"
    echo ----------------------

    [ `id -u` -ne 0 ] && echo 'root privilege required' && exit 1

    if [[ ! $BASEDIR == '/opt/debian-bash' ]]; then
        # download and filfull /opt/debian-bash, then run it from folder

		if [[ -L /opt/debian-bash ]];then
			cd /opt/debian-bash
			./install.sh $PARAM1
			exit 0
		else
	        rm -rf /opt/debian-bash
	        TEMP=`mktemp -d`
	        cd $TEMP
	        echo $TEMP
	        wget https://git.artcode.re/pvincent/debian-bash/archive/master.tar.gz
	        tar -xzf master.tar.gz
	        mv debian-bash /opt/
	        cd /opt/debian-bash
	        ./install.sh $PARAM1
	        rm -rf $TEMP
	        exit 0
		fi

    else

        #remove /etc/skel/.bashrc
        if [ -e /etc/skel/.bashrc ]; then
            rm /etc/skel/.bashrc
        fi

        ORIGINAL="ORIGINAL"
        declare -a arr=(/etc/bash.bashrc /etc/inputrc /etc/vim/vimrc)

        for i in "${arr[@]}"
        do
            if [ ! -f "$i.$ORIGINAL" ]; then

                echo "$i needs installation $(basename $i)"
                mv "$i" "$i.$ORIGINAL"
                ln -s "$BASEDIR/$(basename $i)" "$i"
            else
                echo "$i" already overriden
            fi
        done
        source /etc/bash.bashrc
    fi
}

function install_containers {
    echo "install containers"
    echo --------------------

    # install inside active LXC containers
    if [[ -f '/snap/bin/lxc' ]]; then
        for container in `lxc list --format=json | jq -r '.[] | select(.state.status == "Running") | .name'`; do
            install_one_container $container
            echo
        done
    fi

}

function install_one_container {
    CT=$1
    echo "install container <$CT>"
    echo -------------------------
    # install inside one active LXC container
    if [[ -f '/snap/bin/lxc' ]]; then
        echo "pushed to $CT"
        /snap/bin/lxc file push /opt/debian-bash "${CT}/opt/" -r
        /snap/bin/lxc exec "$CT" -- sh -c "cd /opt/debian-bash && ./install.sh --host"
    fi
}

PARAM1=$1

case $PARAM1 in
    "--host")
        install_host
        ;;
    "--containers")
        install_containers
        ;;
    "--one-container")
        CT=$2
        if [ ! -z $CT ]; then
            install_one_container $CT
        else
            usage
        fi
        ;;
    "--full")
        install_host
        install_containers
        ;;
    *)
        usage
        ;;
esac