#!/usr/bin/env bash

#
# Usage: grid-hub {start|stop}
#

source $(dirname $0)/util

EXPECTED_ARGS=1
E_BADARGS=65

DO_showUsage() {
    echo "Usage: $(basename $0) {start|stop}"
    exit $E_BADARGS
}

if [ $# -ne $EXPECTED_ARGS ]; then
    DO_showUsage
fi

################################################################################

WEBDRIVER_SERVER_JAR=$HOME/opt/selenium-server-standalone.jar
# API default is 4444, so for testing we'll use 3333
WEBDRIVER_HUB_PARAMS="-role hub -port 3333"
WEBDRIVER_HUB_PIDFILE="/tmp/webdriver_hub.pid"

if [ ! -f $WEBDRIVER_SERVER_JAR ]; then
    echo "You must place the Selenium-WebDriver standalone JAR file at ${WEBDRIVER_SERVER_JAR} before proceeding."
    exit 1
fi

case "$1" in
    start)
        echo "Starting Selenium-WebDriver Grid2 hub..."
        if [ -f $WEBDRIVER_HUB_PIDFILE ]; then
            echo "${FAIL_MSG} Selenium-WebDriver Grid2 hub already running with PID $(cat $WEBDRIVER_HUB_PIDFILE). Run 'grid-hub stop' or 'grid-hub restart'."
            exit 1
        else
            START_HUB_CMD="java -Djava.util.logging.config.file=test/logging.properties -jar ${WEBDRIVER_SERVER_JAR} ${WEBDRIVER_HUB_PARAMS}"
            $START_HUB_CMD &
            PID=$!
            echo $PID > "${WEBDRIVER_HUB_PIDFILE}"
            echo "${SUCCESS_MSG} Selenium-WebDriver Grid2 hub started successfully."
            echo "To see full log output, remove the java.util.logging.config.file parameter from script/grid-hub"
        fi
        ;;
    stop)
        echo "Stopping Selenium-WebDriver Grid2 hub..."
        if [ -f $WEBDRIVER_HUB_PIDFILE ]; then
            PID=$(cat $WEBDRIVER_HUB_PIDFILE)
            kill $PID
            rm $WEBDRIVER_HUB_PIDFILE
            sleep 1
            if [[ $(ps -A | egrep "^${PID}") ]]; then
                echo "${FAIL_MSG} Tried to kill the hub with PID ${PID}, but was unsuccessful. You need to kill it with something stronger, like 'kill -9'"
                exit 1
            else
                echo "${SUCCESS_MSG} Selenium-WebDriver Grid2 hub stopped successfully."
                exit 0
            fi
        else
            echo "${SUCCESS_MSG} Selenium-WebDriver Grid2 hub has already been stopped."
            exit 0
        fi
        ;;
    restart)
        $0 stop
        $0 start
        ;;
    *)
        DO_showUsage
esac