#!/bin/sh

die () { echo "$@" ; exit 1; }

. ../../../nvm.sh

nvm use 0.10.28

EXPECTED_PACKAGES="autoprefixer bower david eslint grunt-cli grunth-cli http-server jshint marked node-gyp recursive-blame uglify-js yo"

echo "$EXPECTED_PACKAGES" | xargs npm install -g --quiet

nvm use 0.10.29
ORIGINAL_PACKAGES=$(npm list -g --depth=0 | tail -n +2 | \grep -o -e ' [^@]*' | cut -c 2- | \grep -v npm | sort | uniq | xargs)

nvm copy-packages 0.10.28
FINAL_PACKAGES=$(npm list -g --depth=0 | tail -n +2 | \grep -o -e ' [^@]*' | cut -c 2- | \grep -v npm | sort | uniq | xargs)

[ "$FINAL_PACKAGES" = "$EXPECTED_PACKAGES" ] || die "final packages ($FINAL_PACKAGES) did not match expected packages ($EXPECTED_PACKAGES)"
[ "$ORIGINAL_PACKAGES" != "$FINAL_PACKAGES" ] || die "original packages matched final packages ($ORIGINAL_PACKAGES)"