#!/bin/bash
beta=
dryrun=

usage() {
    echo "Usage: $0 [--dry-run|-n] [--beta|-b] NEW-VERSION" >&2
    exit 1;
}

for arg in "$@"; do
    case $arg in
        --beta|-b)
            beta=1 ;;
        --dry-run|-n)
            dryrun=1 ;;
        -*)
            usage ;;
        *)
            test -n "$NEWVERSION" && usage
            NEWVERSION="$arg"
            ;;
    esac
done

test -z "$NEWVERSION" && usage

# Run this as 'locker-update NEW-VERSION' to upgrade the barnowl.real
# symlink in all arch/ directories to point to the new version.

E=
test -n "$dryrun" && E=echo

cd /mit/barnowl/arch/

for i in *; do
    if [ -L "$i" ]; then
        echo "# Skipping $i as a symbolic link..."
    elif [ "$i" = "common" ]; then
        echo "# Skipping 'common'..."
    elif ! [ -e "$i/bin/$NEWVERSION" ]; then
        echo "# New version $NEWVERSION not built for arch $i...";
    else
        echo "# $i"
        if test -n "$beta"; then
            $E ln -sf "../../common/bin/barnowl-beta" "$i/bin/barnowl-beta"
            $E ln -sf "$NEWVERSION" "$i/bin/barnowl.real-beta"
        else
                # Sanity -- make sure the 'barnowl' symlink is correct.
            $E ln -sf "../../common/bin/barnowl" "$i/bin/barnowl"
            $E ln -sf "$NEWVERSION" "$i/bin/barnowl.real"
        fi
    fi
done;