#!/bin/sh
# WARNING: REQUIRES /bin/sh
#
# - must run on /bin/sh on solaris 9
# - must run on /bin/sh on AIX 6.x
# - if you think you are a bash wizard, you probably do not understand
#   this programming language.  do not touch.
# - if you are under 40, get peer review from your elders.

set -e
set -x

env

# sleep unti omnitruck has updated itself
sleep $SLEEP_TIME

# Check whether a command exists - returns 0 if it does, 1 if it does not
exists() {
  if command -v $1 >/dev/null 2>&1; then
    return 0
  else
    return 1
  fi
}

# SmartOS builds in /opt/local instead
is_smartos() {
  uname -v | grep "^joyent" 2>&1 >/dev/null
}

if is_smartos; then
    PREFIX="/opt/local"
else
    PREFIX="/usr"
fi

# remove the chef package / clobber the files
if exists dpkg; then
    sudo dpkg -P chef || true
elif exists rpm; then
    sudo rpm -ev chef || true
elif exists pkgadd; then
    cat <<EOF > /tmp/nocheck
conflict=nocheck
action=nocheck
EOF
    if sudo pkgrm -a /tmp/nocheck -n chef; then
      :
    else
      echo "WARNING: a 'no package to deinstall' error is normal here"
      echo "WARNING: attempting to fix busted postremove anyway because I'm dumb..."
      echo "WARNING: if this is really a busted postremove you should fix that..."
      echo "WARNING: (but that should have been caught in the client-test script)"
      sudo rm -f /var/sadm/pkg/chef/install/postremove || true
      sudo pkgrm -a /tmp/nocheck -n chef || true
      echo "WARNING: a 'no package to deinstall error' is normal here"
    fi
else # makeself installer
  :
fi

sudo rm  -rf /opt/chef/*

# ensure symlinks are gone, so that failures to recreate them get caught
sudo rm -f $PREFIX/bin/chef-client || true
sudo rm -f $PREFIX/bin/chef-solo || true
sudo rm -f $PREFIX/bin/chef-apply || true
sudo rm -f $PREFIX/bin/chef-shell || true
sudo rm -f $PREFIX/bin/knife || true
sudo rm -f $PREFIX/bin/shef || true
sudo rm -f $PREFIX/bin/ohai || true

if exists curl; then
   curl -L "${OMNITRUCK_BASE_URL}/chef/install.sh" | sudo bash -s -- -v $INSTALL_CHEF_VERSION
else
   wget -qO- "${OMNITRUCK_BASE_URL}/chef/install.sh" | sudo bash -s -- -v $INSTALL_CHEF_VERSION
fi

# sanity check that we're getting symlinks from the pre-install script
if [ ! -L "/usr/bin/chef-client" ]; then
  echo "/usr/bin/chef-client symlink was not installed by pre-install script!"
  exit 1
fi

if [ ! -L "/usr/bin/knife" ]; then
  echo "/usr/bin/knife symlink was not installed by pre-install script!"
  exit 1
fi

if [ ! -L "/usr/bin/chef-solo" ]; then
  echo "/usr/bin/chef-solo symlink was not installed by pre-install script!"
  exit 1
fi

if [ ! -L "/usr/bin/ohai" ]; then
  echo "/usr/bin/ohai symlink was not installed by pre-install script!"
  exit 1
fi

# bundle bust and make sure we invoke chef-client from the installed artifact
unset GEM_HOME
unset GEM_PATH
/opt/chef/bin/chef-client --version