Parity install script

parity_install.sh

RELEASE="stable"
ARCH=$(uname -m)
VANITY_SERVICE_URL="https://vanity-service.parity.io/parity-binaries?architecture=$ARCH&format=markdown"
LIBSSL="undef"

check_os() {

    if [ "$(uname)" = "Linux" ] ; then
    PKG=linux   # linux is my default

    if  (cat /proc/version | grep -Piq '(debian|ubuntu)')  ; then
        LIBSSL=10
        grep -qi 'stretch' /etc/*release && PKG=debian
    fi

    cat /proc/version | grep -iPq '(redhat|centos)' && PKG=centos

    elif [ "$(uname)" = "Darwin" ] ; then
        PKG="darwin"
        echo "Running on Apple"
    else
        echo "Unknown operating system"
        echo "Please select your operating system"
        echo "Choices: debian - Ubuntu / Debian"
        echo "       linux - Other linux distro"
        echo "       darwin - MacOS"
        read PKG
    fi
}

get_package() {
    if [ "$RELEASE" = "beta" ]; then
        LOOKUP_URL="$VANITY_SERVICE_URL&os=$PKG&version=beta-release"
    else
        LOOKUP_URL="$VANITY_SERVICE_URL&os=$PKG&version=$RELEASE"
    fi

    if [ "$PKG" = "debian" ] ; then
        MD=$(curl -Ss ${LOOKUP_URL} | grep amd64 | grep deb )
        DOWNLOAD_FILE=$(echo $MD | cut -d "(" -f2 | cut -d ")" -f1)
    fi

    if [ "$PKG" = "linux" -a "$LIBSSL" = "10" ]; then
        MD=$(curl -Ss ${LOOKUP_URL} | grep deb)
        DOWNLOAD_FILE=$(echo $MD | cut -d "(" -f2 | cut -d ")" -f1)
    fi

    if [ "$PKG" = "linux" -a "$LIBSSL" = "undef" ]; then
        MD=$(curl -Ss ${LOOKUP_URL} | grep "\[parity\]")
        DOWNLOAD_FILE=$(echo $MD | cut -d "(" -f2 | cut -d ")" -f1)
    fi

    if [ "$PKG" = "centos" ] ; then
        MD=$(curl -Ss ${LOOKUP_URL} | grep "rpm")
        DOWNLOAD_FILE=$(echo $MD | cut -d "(" -f2 | cut -d ")" -f1)
    fi

    if [ "$PKG" = "darwin" ] ; then
        MD=$(curl -Ss ${LOOKUP_URL} | grep pkg )
        DOWNLOAD_FILE=$(echo $MD | cut -d "(" -f2 | cut -d ")" -f1)
    fi
}

check_upgrade() {

    if [ -f /usr/bin/parity ] ; then
        OLD_VERSION=$(parity --version | grep version|  cut -d/ -f2  | cut -d- -f1 | sed 's/v//g')
    else
        OLD_VERSION="0.0.0"
    fi

    if [ "$PKG" = "linux" ] ; then
        FILE=$(curl -Ss $LOOKUP_URL | grep amd | cut -d "(" -f2 | cut -d ")" -f1)
        NEW_VERSION=$(basename $FILE | cut -d_ -f2)
    fi

    if [ "$PKG" = "debian" ] ; then
        NEW_VERSION=$(basename $DOWNLOAD_FILE  |  cut -d_ -f2)
    fi

    if [ "$PKG" = "centos" ] ; then
        NEW_VERSION=$(basename $DOWNLOAD_FILE  |  cut -d_ -f2)

    fi

    if [ "$PKG" = "darwin" ] ; then
        NEW_VERSION=$(basename $DOWNLOAD_FILE | cut -d- -f2)
    fi

    if [ "$NEW_VERSION" = "$OLD_VERSION" ] ; then
        echo "Parity $NEW_VERSION already installed"
        exit 1
    fi
    if  version_gt "$NEW_VERSION" "$OLD_VERSION"  ; then
        echo "Upgrading parity from $OLD_VERSION to $NEW_VERSION"
    else
        echo "Existing version of parity: $OLD_VERSION is newer than the version you attempting to install: $NEW_VERSION"
        exit 1
    fi
}

install() {

    TMPDIR=$(mktemp -d)
    cd $TMPDIR
    $(curl -Ss -O $DOWNLOAD_FILE)

    if [ "$PKG" = "debian" ] ; then
        NAME=$(basename $DOWNLOAD_FILE)
        sudo dpkg -i $TMPDIR/$NAME
    fi

    if [ "$PKG" = "linux" -a $LIBSSL = "10" ] ; then
        NAME=$(basename $DOWNLOAD_FILE)
        sudo dpkg -i $TMPDIR/$NAME
    fi

    if [ "$PKG" = "linux" -a $LIBSSL = "undef" ] ; then
        sudo cp $TMPDIR/parity /usr/bin
        sudo chmod +x /usr/bin/parity
    fi

    if [ "$PKG" = "centos" ] ; then
        NAME=$(basename $DOWNLOAD_FILE)
        sudo rpm -U $TMPDIR/$NAME
    fi

    if [ "$PKG" = "darwin" ] ; then
        NAME=$(basename $DOWNLOAD_FILE)
        sudo /usr/sbin/installer -pkg $TMPDIR/$NAME -target /
    fi

}


version_gt() {
    test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1";
}



help() {

    echo "Usage is: -r --release [ stable / beta / nightly ]"

}

# curl installed?
which curl &> /dev/null
if [[ $? -ne 0 ]] ; then
    echo '"curl" binary not found, please install and retry'
    exit 1
fi

while [ "$1" != "" ]; do
    case $1 in
    -r | --release )           shift
            RELEASE=$1
            ;;
    * )     help
            exit 1
            esac
    shift
    done


    echo "Release selected is: $RELEASE"

check_os
get_package
if [ "$RELEASE" != "nightly" ] ; then
    check_upgrade
fi
install