package_barclamp.sh

#!/bin/bash
# We always use the C language and locale
export LANG="C"
export LC_ALL="C"

readonly currdir="$PWD"
export PATH="$PATH:/sbin:/usr/sbin:/usr/local/sbin"

package_cleanup() {
    [[ $tmpdir && -d $tmpdir ]] || return 0
    find "$tmpdir" -type l -print0 |xargs -0 rm -f --
    rm -rf -- "$tmpdir"
}

trap package_cleanup 0 INT QUIT TERM

# Source our config file if we have one
[[ -f $HOME/.build-crowbar.conf ]] && \
    . "$HOME/.build-crowbar.conf"

# Look for a local one.
[[ -f build-crowbar.conf ]] && \
    . "build-crowbar.conf"

# Location for caches that should not be erased between runs
[[ $CACHE_DIR ]] || CACHE_DIR="$HOME/.crowbar-build-cache"

# Location of the Crowbar checkout we are building from.
[[ $CROWBAR_DIR ]] || CROWBAR_DIR="${0%/*}"
[[ $CROWBAR_DIR = /* ]] || CROWBAR_DIR="$currdir/$CROWBAR_DIR"
[[ -f $CROWBAR_DIR/build_crowbar.sh && -d $CROWBAR_DIR/.git ]] || \
    die "$CROWBAR_DIR is not a git checkout of Crowbar!" 
export CROWBAR_DIR

BARCLAMPS=()
DEST="$currdir"

while [[ $1 ]]; do
    case $1 in
	--destdir)
	    shift
	    [[ -d "$1" ]] || die "Cannot install generated tarballs in $1, it does not exist"
	    DEST="$1";;
	--os)
	    shift
	    OS_PKGS="$1";;
	*)
	    [[ -f $CROWBAR_DIR/barclamps/$1/crowbar.yml ]] || die "$1 is not a barclamp!"
	    BARCLAMPS+=("$1");;
    esac
    shift
done

tmpdir="$(mktemp -d /tmp/package-bk-XXXXX)"
cd "$tmpdir"
for bc in "${BARCLAMPS[@]}"; do
    cp -a "$CROWBAR_DIR/barclamps/$bc" .
    (   cd "$bc"
	[[ -d .git ]] && rm -rf -- .git
	[[ -d $CACHE_DIR/barclamps/$bc ]] && (
	    mkdir -p cache
	    cd cache
	    if [[ $OS_PKGS ]]; then
		for d in files gems "$OS_PKGS"; do
		    [[ -d $CACHE_DIR/barclamps/$bc/$d ]] || continue
		    ln -s "$CACHE_DIR/barclamps/$bc/$d" .
		done
	    else
		for d in "$CACHE_DIR/barclamps/$bc"/*; do
		    [[ -d $d ]] || continue
		    ln -s "$d" .
		done
	    fi
	)
	find -L -type f -not -name sha1sums -print0 | \
	    xargs -0 sha1sum -b >sha1sums
    )
    tar chf - "$bc" |gzip -9 >"$DEST/$bc.tar.gz"
done