#!/bin/sh
die() { echo >&2 "$@"; exit 1; }
[ $# -gt 0 ] && [ $# -lt 4 ] || die "Syntax: $(basename $0) [-c] <server version> [<revision>]"
set -o errexit

case "$1" in
-c)    shift
       BASE=campaignd
       TYPE=campaignd ;;
*)     BASE=servers # should be moved to wesnothd at some point. (several other scripts depend on the position though!)
       TYPE=wesnothd ;;
esac

VERSION=$(readlink "$HOME/$BASE/$1" || true)
VERSION="${VERSION:=$1}"
SERVERBASE="$HOME/$BASE/$VERSION"
echo "building $TYPE-$VERSION..."

SOCKET="$SERVERBASE/build/var/run/socket"
SOURCE="$HOME/source"

[ -d "$SERVERBASE" ] || die "Server base dir '$SERVERBASE' not found!"
[ -d "$SOURCE"     ] || die "Source dir '$SOURCE' not found!"

SCONS=yes
CXXFLAGS="$CXXFLAGS"
LDFLAGS="$LDFLAGS"
case "$VERSION" in
1.2)   CXXFLAGS="$CXXFLAGS -ggdb3"
       SCONS=no
       cd "$SOURCE"/1.2 ;;
1.4)   CXXFLAGS="$CXXFLAGS -ggdb3 -DNUM_SHARDS=7 -DBANDWIDTH_MONITOR"
       SCONS=no
       cd "$SOURCE"/1.4 ;;
1.6|1.8|1.10)
       CXXFLAGS="$CXXFLAGS -ggdb3 -DNUM_SHARDS=7 -DBANDWIDTH_MONITOR"
       cd "$SOURCE"/$VERSION ;;
1.9)
       [ "$TYPE" = "campaignd" ] || die "1.9 is currently a special case for the 1.10 campaignd only"
       CXXFLAGS="$CXXFLAGS -ggdb3 -DNUM_SHARDS=7 -DBANDWIDTH_MONITOR"
       cd "$SOURCE"/1.10 ;;
trunk|master)
       CXXFLAGS="$CXXFLAGS -ggdb3 -DNUM_SHARDS=7 -O0 -DBANDWIDTH_MONITOR"
       cd "$SOURCE"/master ;;
*)     CXXFLAGS="$CXXFLAGS -ggdb3 -DNUM_SHARDS=7 -DBANDWIDTH_MONITOR"
       cd "$SOURCE"/master ;;
esac

if [ $TYPE = campaignd ]; then
	case "$VERSION" in
	1.4)
		SCONS=no ;;
	1.8|trunk)
		CXXFLAGS="$CXXFLAGS -ggdb3 -pg"
		LDFLAGS="$LDFLAGS -pg" ;;
	esac
fi
set -o nounset

printf 'Updating git working tree... '
COMMIT="${2:+-r $2}"
git checkout -f $COMMIT > /dev/null
COMMIT=$(git describe --long)
echo "to $COMMIT"
[ "$COMMIT" != "" ] || die "No revision information found. Odd, exiting..."

# reminder for local changes
#git status
BUILD="builds/$TYPE-$VERSION-git-${COMMIT}"
BUILD_DIR="$HOME/$BUILD"

set -x
mkdir -p "$BUILD_DIR"

BUILD_FLAGS=
if [ $SCONS = yes ]; then
	if [ $TYPE = wesnothd ]; then
		BUILD_FLAGS="fifodir=$BUILD_DIR/var/run raw_sockets=1 forum_user_handler=1"
		case $(hostname) in
		gonzo.dicp.de) BUILD_FLAGS="fifodir=$BUILD_DIR/var/run raw_sockets=1 boostdir=$HOME/tools/include boostlibdir=$HOME/tools/lib boost_suffix=-mt" ;;
		basilic)       BUILD_FLAGS="fifodir=$BUILD_DIR/var/run raw_sockets=1" ;;
		esac
	fi
	mkdir -p "$BUILD_DIR"/var/run
	# need to remove .scons-option-cache when parameters get removed!
	CXXFLAGS="$CXXFLAGS" LDFLAGS="$LDFLAGS" scons install-$TYPE prefix="$BUILD_DIR" program_suffix=-"$VERSION" $BUILD_FLAGS use_network_ana=false profile=0 fribidi=0 python=0 localedir= prefsdir= > "$BUILD_DIR"/scons.log
else
	if [ $TYPE = wesnothd ]; then
		BUILD_FLAGS="--enable-server --enable-raw-sockets --with-fifodir=$BUILD_DIR/var/run --with-boost=$HOME/tools"
	else
		BUILD_FLAGS="--enable-campaign-server"
	fi
	#echo 'autogen.sh and configure...'
	./autogen.sh > "$BUILD_DIR"/autogen.log
	CXXFLAGS="$CXXFLAGS" LDFLAGS="$LDFLAGS" ./configure --prefix="$BUILD_DIR" --program-suffix=-"$VERSION" $BUILD_FLAGS --disable-game --disable-nls --enable-lite > "$BUILD_DIR"/configure.log
	make clean > /dev/null
	#echo 'make...'
	make > "$BUILD_DIR"/make.log
	#echo 'make install...'
	make install > "$BUILD_DIR"/install.log
fi

# remove the man pages
rm -rf "$BUILD_DIR"/share/

cd "$SERVERBASE"

test -L build &&
if [ -p "$SOCKET" ] || [ $TYPE = campaignd ]; then
	rm -f oldbuild
	mv build oldbuild
else #the server under build has never been started, keep the oldbuild link to the (currently) running server
	rm -f build
fi
ln -s ../../"$BUILD" build

cd "$HOME"/bin || exit 1
ln -sf "../$BUILD/bin/$TYPE-$VERSION" "$TYPE-$VERSION"
set +x