#!/sbin/openrc-run
# /etc/init.d/minecraft
#
# Minecraft - OpenRC scripts
# Copyright (C) 2017-2019 João Brázio [joao@brazio.org]
#
# Expects the game folder to be located at /srv/minecraft/<instance>
# Don't use directly the /etc/init.d/minecraft script, create a symlink for you instance.
#
# This is an example for Paper:
# - mkdir -p /srv/minecraft/paper
# - Download paper jar and place it there
# - ln -s /etc/init.d/minecraft /etc/init.d/minecraft.paper
# - cp /etc/conf.d/minecraft /etc/conf.d/minecraft.paper
#
# Dependencies:
# - Java VM at /usr/bin/java
# - mcrcon [https://github.com/Tiiffi/mcrcon]
#

USER={{ server_user }}
GROUP={{ server_user }}

INSTANCE=${RC_SVCNAME##*.}
BASE="/home/{{ server_user }}/minecraft"
PIDFILE="/var/run/${RC_SVCNAME}.pid"
RCON="/usr/bin/rcon"
BIN="$(ls ${BASE} -v 2>/dev/null | grep -i "craftbukkit.*jar\\|spigot.*jar\\|paper*.*jar\\|minecraft_server.*jar" | head -n 1)"

config_get () {
        echo $(grep ${1} "${BASE}/server.properties" | cut -d '=' -f 2)
}

depend () {
        need net
}

start_pre () {
        if [ -z "${BIN}" ]; then
                eerror "${RC_SVCNAME} cannot find a proper server jar."
                eerror "Check your game installation at ${BASE}."
                return 1
        fi

        [ -f "${PIDFILE}" ] && rm ${PIDFILE}

        return 0
}

start () {
        ebegin "Starting Minecraft server ${INSTANCE}"
        start-stop-daemon --start --chdir ${BASE} --pidfile ${PIDFILE} --make-pidfile \
                --exec /usr/bin/java --user ${USER} --group ${GROUP} \
                --background -- -server -Xms${MINHEAP:-128M} -Xmx${MAXHEAP:-1024M} \
                ${CUSTOMARGS} -jar ${BIN} nogui
        eend $?
}

stop_pre () {
        if [ ! -f "${BASE}/server.properties" ]; then
                eerror "${RC_SVCNAME} cannot find a proper server config file."
                eerror "Check your game installation at ${BASE}."
                return 1
        fi

        return 0
}

stop () {
        ebegin "Stopping Minecraft server ${INSTANCE}"

        if [ "$(config_get enable-rcon)" = "true" ]; then
                # Fetch rcon configuration
                RCON_SRV=$(config_get server.ip)
                RCON_PORT=$(config_get rcon.port)
                RCON_PASS=$(config_get rcon.password)

                # Try to soft kill the server
                ${RCON} -H ${RCON_SRV:-127.0.0.1} -p ${RCON_PORT} -m -P ${RCON_PASS} save-all 1>/dev/null 2>&1
                ${RCON} -H ${RCON_SRV:-127.0.0.1} -p ${RCON_PORT} -m -P ${RCON_PASS} stop 1>/dev/null 2>&1

                i=0
                PID=$(cat ${PIDFILE})

                while [ "${i}" -le 30 ]; do
                        kill -0 ${PID} 2>/dev/null && sleep 1 || break
                        i=$(( i + 1 ))
                done
        fi

        # Hard stop the server
        start-stop-daemon --stop --chdir ${BASE} --pidfile ${PIDFILE} --user ${USER} --group ${GROUP} --retry 5 2>/dev/null
        eend 0
}

status () {
        if [ "$(config_get enable-rcon)" = "true" ]; then
                # Fetch rcon configuration
                RCON_SRV=$(config_get server.ip)
                RCON_PORT=$(config_get rcon.port)
                RCON_PASS=$(config_get rcon.password)

                ${RCON} -H ${RCON_SRV:-127.0.0.1} -p ${RCON_PORT} -m -P ${RCON_PASS} version
                ${RCON} -H ${RCON_SRV:-127.0.0.1} -p ${RCON_PORT} -m -P ${RCON_PASS} tps
        fi
}


backup() {
  saveoff

  NOW=`date "+%Y-%m-%d_%Hh%M"`
  BACKUP_FILE="${BACKUP_BASE}/backup_${NOW}.tar"
  einfo "Backing up minecraft world..."
  as_user "tar -C \"${BASE}\" -cf \"$BACKUP_FILE\" ${WORLDS}"

  einfo "Backing up ${BIN}"
  as_user "tar -C \"${BASE}\" -rf \"$BACKUP_FILE\" ${BIN} server.properties"

  saveon

  einfo "Compressing backup..."
  as_user "gzip -f \"$BACKUP_FILE\""
  einfo "Done."
}