#!/bin/sh -vx
# IBM(c) 2013 EPL license http://www.eclipse.org/legal/epl-v10.html
#####################################################
#=head1  install_chef_client
#=head2  This command installs the chef client on a xCAT node(only for Ubuntu). It is used as
# a postscript on Ubuntu only.
#    usage:
#      1. Setup the chef client using updatenode
#            updatenode <noderange> -P "install_chef_client"
#      2. Setup chef client during os provisioning
#            chef <noderange> -p postscripts=install_chef_client
#      3. Download chef deb from non-default repository
#            updatenode <noderange> -P "install_chef_workstation -r http://mn/install/chef/chef_11.4.0-1.ubuntu.11.04_amd64.deb -s chefservername"
#=cut
#####################################################

cat /etc/*release | grep "Ubuntu" > /dev/null
if [ $? != 0 ]; then
    echo "chef script only runs on ubuntu currently."
    exit 1
fi

os="ubuntu"

#if [ $ARCH != "x86_64" ]; then
#    echo "chef script only runs on x86_64 currently."
#    exit -1;
#fi

# For the URL to download chef:
# -r flag takes precedence
# then the environment variable CHEF_URL
# then the default internet location
ARGNUM=$#;

if [ $ARGNUM -gt 1 ]; then
    if [ $1 = "-r" ]; then
        chefurl=$2
    fi
    if [ $1 = "-s" ]; then
        chefserver=$2
    fi
    if [ $ARGNUM -gt 3 ]; then
        if [ $3 = "-r" ]; then
            chefurl=$4
        fi
        if [ $3 = "-s" ]; then
            chefserver=$4
        fi
    fi

fi

if [ -z "$chefserver" ]
then
    if [ -n "$CHEFSERVER" ]
    then
        chefserver=$CHEFSERVER
    fi
    if [ -z "$chefserver" ]
    then
        chefserver=$SITEMASTER
    fi
fi

if [ -z "$chefserver" ]; then
    if [ -f /etc/chef-server/admin.pem -a -f /etc/chef-server/chef-validator.pem ]; then
        echo "the current node is also a chef server" 
        if [ -f /opt/chef-server/embedded/bin/knife ]; then
            if [ ! -f /usr/bin/knife ]; then
                ln -s  /opt/chef-server/embedded/bin/knife /usr/bin/knife             
            fi
        fi
   fi
    
   if [ -f /usr/bin/knife ]; then
        #configure the chef configuration file
        result=`dirname $0`
        ${result}/config_chef_workstation 
        exit 0;
   fi 

fi

if [ $chefurl != "" ]; then
    if [ "$CHEF_URL" != "" ]; then
        chefurl=$CHEF_URL
    else
       arch=`uname -i`
       osmv=`cat /etc/*release | grep DISTRIB_RELEASE |cut -d= -f2`
       #https://www.opscode.com/chef/download?v=latest&prerelease=false&p=ubuntu&pv=12.04&m=x86_64
       chefurl="https://www.opscode.com/chef/download?v=latest&prerelease=false&p=$os&pv=$osmv&m=$arch";
    fi
fi

if [ $os == "ubuntu" ]; then
    #remove the old chef-server and the configuration files
    apt-get -y autoremove --purge chef
    rm -rf /etc/chef
    rm -rf /root/.chef

    #add the internet Ubuntu repositories
    #urelease="precise" #default release name
    urelease=`cat /etc/lsb-release |grep DISTRIB_CODENAME |cut -d= -f2`

    
    hostname=`hostname -f`
    ##hostname="10.1.0.82"

    #add the public source
    ubuntusource="deb http://us.archive.ubuntu.com/ubuntu/ $urelease main\n
deb http://us.archive.ubuntu.com/ubuntu/ ${urelease}-updates main\n
deb http://us.archive.ubuntu.com/ubuntu/ $urelease universe\n
deb http://us.archive.ubuntu.com/ubuntu/ ${urelease}-updates universe\n
"
    echo -e $ubuntusource >> /etc/apt/sources.list

    # download the chef-server deb packages
    #wget https://opscode-omnitruck-release.s3.amazonaws.com/ubuntu/12.04/x86_64/chef-server_11.0.6-1.ubuntu.12.04_amd64.deb
    rm -rf /tmp/chef.deb 
    wget -N --waitretry=10 --random-wait -T 60  $chefurl   -O /tmp/chef.deb
    rc=$?
    if [ $rc -eq 0 ] && [ -f /tmp/chef.deb ]; then
        # install it
        dpkg -i /tmp/chef.deb
    else 
        echo "Cannot download $chefurl"
        exit 1
    fi   

    apt-get -y update

    # install rake git
    apt-get install -y rake git

fi

#configure the knife configuration file
result=`dirname $0`
${result}/config_chef_workstation -s $chefserver