package_barclamp.sh

#!/bin/bash
# We always use the C language and locale
export LANG="C"
export LC_ALL="C"
BUILD_TYPE="tar"
readonly currdir="$PWD"
export PATH="$PATH:/sbin:/usr/sbin:/usr/local/sbin"

die() { echo "$*"; exit 1; }
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
if [[ ! $CACHE_DIR ]]; then

    # 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"
fi

# 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

# Set destination directory for generated packages
[[ $PACKAGE_DEST ]] && DEST="$PACKAGE_DEST"
[[ $DEST ]] || DEST="$currdir"

BARCLAMPS=()

while [[ $1 ]]; do
    case $1 in
        --destdir)
            shift
            [[ -d "$1" ]] || die "Cannot install generated packages in $1, it does not exist"
            DEST="$1";;
        --os)
            shift
            OS_PKGS="$1";;
        --deb)
            [[ -d $CROWBAR_DIR/packaging/deb ]] || die "Cannot build .deb packages!"
            BUILD_TYPE=deb;;
        --rpm)
            [[ -d $CROWBAR_DIR/packaging/rpm ]] || die "Cannot build .rpm packages!"
            BUILD_TYPE=rpm;;
        --no-cache)
            NO_CACHE=true;;
        *)
            if [[ -f $1/crowbar.yml ]]; then
                [[ $1 = /* ]] && BARCLAMPS+=("$1") || \
                    BARCLAMPS+=("$currdir/$1")
            elif [[ -f $CROWBAR_DIR/barclamps/$1/crowbar.yml ]]; then
                BARCLAMPS+=("$CROWBAR_DIR/barclamps/$1")
            else
                die "$1 is not a barclamp!"
            fi ;;
    esac
    shift
done

tmpdir="$(mktemp -d /tmp/package-bk-XXXXX)"
barclamps=()
cd "$tmpdir"
for barclamp in "${BARCLAMPS[@]}"; do
    bc=${barclamp##*/}
    if [[ -d $CACHE_DIR/barclamps/$bc && ! $NO_CACHE ]]; then
        mkdir -p "$bc/cache"
        if [[ $OS_PKGS ]]; then
            for d in files gems git_repos pips "$OS_PKGS"; do
                [[ -d $CACHE_DIR/barclamps/$bc/$d ]] || continue
                [[ -L $d ]] || ln -s -t "$bc/cache" "$CACHE_DIR/barclamps/$bc/$d"
            done
        else
            for d in "$CACHE_DIR/barclamps/$bc"/*; do
                [[ -d $d ]] || continue
                [[ -L $d ]] || ln -s -t "$bc/cache/" "$d"
            done
        fi
        tar chf - "$bc" |gzip -9 >"$DEST/$bc-cache.tar.gz"
        find "$bc/cache" -type l -print0 |xargs -0 rm -f --
        rm -rf "$bc/cache"
    fi
    cp -a "$barclamp" .
    (
        cd "$tmpdir/$bc"
        if [[ -d .git ]]; then
            GIT_COMMIT=$(git log -n 1 | grep "^commit" | awk -F" " '{ print $2 }')
            GIT_DATE=$(git log -n 1 | grep "^Date:" | sed 's/Date:[ ]*//')
            echo "" >> crowbar.yml
            echo "git:" >> crowbar.yml
            echo "  date: $GIT_DATE" >> crowbar.yml
            echo "  commit: $GIT_COMMIT" >> crowbar.yml
            rm -rf -- .git
        fi
        # Generate our sha1sums
        find -L -type f -not -name sha1sums -print0 | \
            xargs -0 sha1sum -b >sha1sums
    )
    case $BUILD_TYPE in
        deb) cp -a "$CROWBAR_DIR/packaging/deb/debian" "$tmpdir/$bc"
            # Make a potentially hideous changelog
            (   cd "$CROWBAR_DIR/barclamps/$bc"
                git log --pretty=format:"crowbar-barclamp-${bc//_/-} (%ct.%h) unstable; urgency=low%n%n  * %s%n%n -- %an <%ae>  %aD%n" \
                    --no-merges >"$tmpdir/$bc/debian/changelog");;
    esac
    barclamps+=("$tmpdir/$bc")
done

case $BUILD_TYPE in
    deb)
        "$CROWBAR_DIR/packaging/make-pkg" --type deb --dest "$tmpdir" "${barclamps[@]}" || \
            die "Cannot create .deb packages!"
            find "$tmpdir" -name "crowbar-barclamp-*.deb" \
                -exec mv '{}' "$DEST" ';';;
    rpm)
        mkdir -p "$tmpdir/BUILD" "$tmpdir/RPMS"
        "$CROWBAR_DIR/packaging/make-pkg" --type rpm --dest "$tmpdir" "${barclamps[@]}" || \
            die "Cannot create .rpm packages!"
            find "$tmpdir/RPMS" -name "crowbar-barclamp-*.rpm" \
                -exec mv '{}' "$DEST" ';';;
    tar)
        "$CROWBAR_DIR/packaging/make-pkg" --type tar --dest "$DEST" "${barclamps[@]}" || \
            die "Cannot create .tar packages!";;
esac