#!/bin/bash -e

usage() {
  	echo "Usage: app.sh \${command} \${server} \${id}"
  	echo "	command: start/stop/restart"
  	echo "	server: the name of the server"
  	echo "	id: the number greater than zero of the server id"
}

if [[ $# != 3 ]]; then
	usage
	exit 0
fi

CMD=$1
SVR=$2
SID=$3

start_server() {
  cd ${SVR}

	pid=`ps -ef | grep ecs_${SVR} | grep ${SVR}_${SID}.json | awk '{print $2}'`

	if [ ! -z ${pid} ]; then
		echo "The server '${SVR}' with id:${SID} is running."
		exit 0
	fi

	if [ ! -x ./bin/ecs_${SVR} ]; then
		chmod +x ./bin/ecs_${SVR}
	fi

	nohup ./bin/ecs_${SVR} -conf ./conf/${SVR}_${SID}.json > ./ecs_${SVR}_${SID}.out 2>&1 &

	sleep 2

	pid=`ps -ef | grep ecs_${SVR} | grep ${SVR}_${SID}.json | awk '{print $2}'`

	if [ -z ${pid} ]; then
		echo "The server '${SVR}' with id:${SID} start failed."
		tail -n30  ./bin/ecs_${SVR}_${SID}.out
		exit 1
	fi

	echo "The server '${SVR}' with id:${SID} was started, pid: ${pid}"

	cd ..
}

stop_server() {
	pid=`ps -ef | grep ecs_${SVR} | grep ${SVR}_${SID}.json | awk '{print $2}'`

	if [ ! -z ${pid} ]; then
		kill ${pid}

		sleep 1

		echo "The server '${SVR}' with id:${SID} was stopped, pid: ${pid}"
	fi
}

case ${CMD} in
	start)
		start_server
		exit 0
		;;
	stop)
		stop_server
		exit 0
		;;
	restart)
		stop_server
		start_server
		exit 0
		;;
  help)
    usage
    exit 0
    ;;
	*)
		echo "Unknown command: ${CMD}"
		exit 1
		;;
esac