#! /bin/sh -e

DESTDIR=$1

if [ -z "$DESTDIR" ]; then
    echo "Usage: $0 DESTDIR"
    exit
fi

cd $(dirname $0)

older () {
    [ -z "$1" ] && return 1
    target=$1; shift
    [ -f $target ] || return 0
    for i in "$@"; do
	[ $i -nt $target ] && return 0
    done
    return 1
}

copy () {
    src=$1
    target=$2/$src
    targetdir=$(dirname $target)
    if older $target $src; then
	echo "COPY $src"
	mkdir -p $targetdir
	cp $src $target
    fi
}

setup() {
    [ -d $DESTDIR/state ] && return
    echo "SETUP"
    for i in points.new points.tmp teams; do
	dir=$DESTDIR/state/$i
	mkdir -p $dir
	setfacl -m ${www}:rwx $dir
    done
    mkdir -p $DESTDIR/packages
    >> $DESTDIR/state/points.log
    if ! [ -f $DESTDIR/assigned.txt ]; then
	hd </dev/urandom | awk '{print $3 $4 $5 $6;}' | head -n 100 > $DESTDIR/assigned.txt
    fi

    mkdir -p $DESTDIR/www
    ln -sf ../state/points.json $DESTDIR/www
    ln -sf ../state/puzzles.json $DESTDIR/www
}


echo "Figuring out web user..."
for www in www-data http tc _ _www; do
    id $www && break
done
if [ $www = _ ]; then
    echo "Unable to determine httpd user on this system. Dying."
    exit 1
fi

mkdir -p $DESTDIR || exit 1

setup
git $SRCDIR ls-files | while read fn; do
    case "$fn" in
        example-puzzles/*|tools/*|docs/*|install.sh|setup.cfg|README.md|.gitignore|src/mothd)
            true # skip
            ;;
	www/*)
	    copy $fn $DESTDIR/
	    ;;
	bin/*)
	    copy $fn $DESTDIR/
	    ;;
	*)
	    echo "??? $fn"
	    ;;
    esac
done

echo "All done installing."