install

#!/bin/sh

##
# this curl-install script supports the installation of the latest
# version of dvdcli for CentOS, Ubuntu, CoreOS, and Darwin using
# RPMs, DEBs, and tarballs.
#
# to install the latest version of dvdcli simply execute:
#
#  curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -
#
# however, this script will also allow users to install specific
# versions of REX-Ray and even supports the discovery of those versions.
# for example, to list the available REX-Ray packages use the "list"
# command like so:
#
#  curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s list -
#
# this will emit the following curl commands to demonstrate how to
# install one or more of the available packages, "unstable", "staged",
# and "stable".
#
#    curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s unstable -
#    curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s staged -
#    curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s stable -
#
# again, the "list" command outputs the curl commands to perform
# installations, not how to traverse deeper into the package structure.
# however, it's not hard to do that traversal. for example, to list the
# contents of the "stable" package we'd execute:
#
#  curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s list stable -
#
# the above command would emit somthing similar to:
#
#    curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s stable 0.2.0 -
#    curl -sSL https://dl.bintray.com/emccode/dvdcli/install | sh -s stable latest -
#
# as you can see, to traverse the structure, we simply insert the
# command "list" as the first argument after the "-s" flag.
##

PROD=dvdcli
REPO=dvdcli
BIN_NAME=dvdcli

BINTRAY_URL=https://dl.bintray.com/emccode
URL=$BINTRAY_URL/$REPO

SCRIPT_URL=$URL/install
SCRIPT_CMD="curl -sSL $SCRIPT_URL | sh -s"

CMD=$1

sudo() {
    if [ "$(id -u)" -eq "0" ]; then $@; else $SUDO $@; fi
}

is_coreos() {
    grep DISTRIB_ID=CoreOS /etc/lsb-release 2> /dev/null
}

list() {
    if [ -z "$PKG" ]; then
        echo "$SCRIPT_CMD list unstable -"
        echo "$SCRIPT_CMD list staged -"
        echo "$SCRIPT_CMD list stable -"
    else
        URL="$URL/$PKG"
        for v in $(curl -sSL $URL | \
                   grep '<a' | grep -v 'latest' | \
                   perl -pe 's/^.*?<a.+?>([^<]+?)\/?<\/a>.*$/$1/gm'); do
            echo "$SCRIPT_CMD $PKG $v -"
        done
    fi
}

install() {

    URL=$URL/$PKG/$VERSION
    OS=$(uname -s)
    ARCH=$(uname -m)
    SUDO=$(which sudo)
    BIN_DIR=/usr/bin
    BIN_FILE=$BIN_DIR/$BIN_NAME
    IS_COREOS=$(is_coreos)

    # how to detect the linux distro was taken from http://bit.ly/1JkNwWx
    if [ -e "/etc/redhat-release" -o -e "/etc/redhat-version" ]; then

        #echo "installing rpm"
        sudo rpm -ih --quiet $URL/$BIN_NAME-latest-$ARCH.rpm > /dev/null

    elif [ "$ARCH" = "x86_64" -a -z "$IS_COREOS" ] && \
         [ -e "/etc/debian-release" -o \
           -e "/etc/debian-version" -o \
           -e "/etc/lsb-release" ]; then

        #echo "installing deb"
        curl -sSLO $URL/$BIN_NAME-latest-$ARCH.deb && \
            sudo dpkg -i $BIN_NAME-latest-$ARCH.deb && \
            rm -f $BIN_NAME-latest-$ARCH.deb

    else
        if [ -n "$IS_COREOS" ]; then
            BIN_DIR=/opt/bin
            BIN_FILE=$BIN_DIR/$BIN_NAME
        elif [ "$OS" = "Darwin" ]; then
            BIN_DIR=/usr/local/bin
            BIN_FILE=$BIN_DIR/$BIN_NAME
        fi

        if [ -z "$FILE_NAME" ]; then
            if [ "$VERSION" = "latest" ]; then
                FILE_NAME=$BIN_NAME-$OS-$ARCH.tar.gz
            else
                FILE_NAME=$BIN_NAME-$OS-$ARCH-$VERSION.tar.gz
            fi
        fi

        FILE_URL=$URL/$FILE_NAME

        sudo mkdir -p $BIN_DIR && \
          curl -sSLO $FILE_URL && \
          sudo tar xzf $FILE_NAME -C $BIN_DIR && \
          rm -f $FILE_NAME && \
          sudo chmod 0755 $BIN_FILE && \
          sudo chown 0 $BIN_FILE && \
          sudo chgrp 0 $BIN_FILE
    fi

    echo
    echo "$PROD has been installed to $BIN_FILE"
    echo
    $BIN_FILE version
    echo
}

if [ "$CMD" = "list" ] || [ "$CMD" = "install" ]; then
    shift
fi

if [ "$CMD" = "list" ]; then
    PKG=$1
    VERSION=$2
    list
else
    PKG=${1:-stable}
    VERSION=${2:-latest}
    FILE_NAME=$3
    install
fi