#!/bin/sh
# Rebuilds the 203 game/db from the 40250 source with our server patches, deploys it, or rolls it back.
# Run on the server from tools/server (all of tools/server copied there):
#
#   sh rebuild.sh check              which patches the source has
#   sh rebuild.sh build              apply missing patches, build game + db into /root/rebuild/<time>
#   sh rebuild.sh deploy <dir>       stop, back up share/bin/{game,db}, install <dir>/{game,db}, start
#   sh rebuild.sh rollback <dir>     stop, put a backup (/root/backup-bin/<time>) back, start
#   sh rebuild.sh data               rerun the data installers (quests, names, shops), then restart
#
# Patches, in order (each is a patch -p1 against /usr/metin2/src, saved byte-exact):
#   inventory-5-pages   5-page inventory; needs its DB migration once (inventory-5-pages/README.md)
#   hunt-set            quest item.set_attribute, free items in extended shops
set -eu

SRC=${SRC:-/usr/metin2/src}
SERVER=${SERVER:-/usr/metin2/server}
HERE=$(cd "$(dirname "$0")" && pwd)
PATCHES="inventory-5-pages hunt-set"
TS=$(date +%Y%m%d-%H%M%S)

patch_state() {
	if patch -p1 -R -C -s -f -d "$SRC" < "$HERE/$1/server.patch" > /dev/null 2>&1; then
		echo applied
	elif patch -p1 -C -s -f -d "$SRC" < "$HERE/$1/server.patch" > /dev/null 2>&1; then
		echo missing
	else
		echo conflict
	fi
}

stop_server() {
	(cd "$SERVER" && sh close.sh) > /dev/null 2>&1 || true
	sleep 8
	if ps ax -o command | grep -q '^[.]/\(game\|db\|auth\)'; then echo "server still running" >&2; exit 1; fi
}

start_server() {
	(cd "$SERVER" && echo 1 | sh start.sh) > /dev/null 2>&1
	sleep 15
	echo "running: $(ps ax -o command | grep -c '^[.]/game') game, $(ps ax -o command | grep -c '^[.]/db') db"
}

case ${1:-} in
check)
	for p in $PATCHES; do echo "$p: $(patch_state $p)"; done
	;;
build)
	for p in $PATCHES; do
		state=$(patch_state $p)
		echo "$p: $state"
		case $state in
		missing) patch -p1 -s -d "$SRC" < "$HERE/$p/server.patch" ;;
		conflict) echo "$p/server.patch does not apply" >&2; exit 1 ;;
		esac
	done
	OUT=/root/rebuild/$TS
	mkdir -p "$OUT"
	# The Makefiles move the binary to GAMEDIR/DBDIR (default: the live share/bin).
	(cd "$SRC/server/game/src" && gmake -j2 GAMEDIR="$OUT") > "$OUT/game.log" 2>&1 || { tail "$OUT/game.log" >&2; exit 1; }
	(cd "$SRC/server/db/src" && gmake -j2 DBDIR="$OUT") > "$OUT/db.log" 2>&1 || { tail "$OUT/db.log" >&2; exit 1; }
	ls -l "$OUT/game" "$OUT/db"
	echo "built: $OUT (sh rebuild.sh deploy $OUT)"
	;;
deploy)
	NEW=${2:?usage: sh rebuild.sh deploy <dir with game and db>}
	[ -x "$NEW/game" ] && [ -x "$NEW/db" ] || { echo "$NEW has no game/db" >&2; exit 1; }
	stop_server
	BACKUP=/root/backup-bin/$TS
	mkdir -p "$BACKUP"
	cp -p "$SERVER/share/bin/game" "$SERVER/share/bin/db" "$BACKUP/"
	echo "backup: $BACKUP (sh rebuild.sh rollback $BACKUP)"
	cp "$NEW/game" "$NEW/db" "$SERVER/share/bin/"
	start_server
	;;
rollback)
	OLD=${2:?usage: sh rebuild.sh rollback <backup dir>}
	[ -f "$OLD/game" ] && [ -f "$OLD/db" ] || { echo "$OLD has no game/db" >&2; exit 1; }
	stop_server
	cp "$OLD/game" "$OLD/db" "$SERVER/share/bin/"
	start_server
	;;
data)
	stop_server
	sh "$HERE/ring-warp/install.sh"
	sh "$HERE/support-skills/install.sh"
	sh "$HERE/hunt-set/install.sh"
	sh "$HERE/npc-shops/install.sh" "$HERE/npc-shops/item-mall"
	sh "$HERE/npc-shops/install.sh" "$HERE/npc-shops/mount"
	start_server
	;;
*)
	sed -n '2,15p' "$0" >&2
	exit 2
	;;
esac