#!/bin/sh

# /bin/sh on Solaris is not a POSIX compatible shell, but /usr/bin/ksh is.
if [ `uname -s` = 'SunOS' -a "${POSIX_SHELL}" != "true" ]; then
    POSIX_SHELL="true"
    export POSIX_SHELL
    # To support 'whoami' add /usr/ucb to path
    PATH=/usr/ucb:$PATH
    export PATH
    exec /usr/bin/ksh $0 "$@"
fi
unset POSIX_SHELL # clear it so if we invoke other scripts, they run as ksh as well

RUNNER_SCRIPT_DIR={{runner_script_dir}}
RUNNER_SCRIPT=${0##*/}

RUNNER_BASE_DIR={{runner_base_dir}}
RUNNER_ETC_DIR={{runner_etc_dir}}
RUNNER_LIB_DIR={{platform_lib_dir}}
RUNNER_LOG_DIR={{runner_log_dir}}
RUNNER_USER={{runner_user}}

WHOAMI=$(whoami)

# Make sure this script is running as the appropriate user
if ([ "$RUNNER_USER" ] && [ "x$WHOAMI" != "x$RUNNER_USER" ]); then
    type sudo > /dev/null 2>&1
    if [ $? -ne 0 ]; then
        echo "sudo doesn't appear to be installed and your EUID isn't $RUNNER_USER" 1>&2
        exit 1
    fi
    echo "Attempting to restart script through sudo -H -u $RUNNER_USER" >&2
    exec sudo -H -u $RUNNER_USER -i $RUNNER_SCRIPT_DIR/$RUNNER_SCRIPT $@
fi

# Make sure CWD is set to runner base dir
cd $RUNNER_BASE_DIR

# Extract the target node name from node.args
NAME_ARG=`egrep "^ *-s?name" $RUNNER_ETC_DIR/vm.args`
if [ -z "$NAME_ARG" ]; then
    echo "vm.args needs to have either -name or -sname parameter."
    exit 1
fi

# Learn how to specify node name for connection from remote nodes
echo "$NAME_ARG" | grep '^-sname' > /dev/null 2>&1
if [ "X$?" = "X0" ]; then
    NAME_PARAM="-sname"
    NAME_HOST=""
else
    NAME_PARAM="-name"
    echo "$NAME_ARG" | grep '@.*' > /dev/null 2>&1
    if [ "X$?" = "X0" ]; then
        NAME_HOST=`echo "${NAME_ARG}" | sed -e 's/.*\(@.*\)$/\1/'`
    else
        NAME_HOST=""
    fi
fi

# Extract the target cookie
COOKIE_ARG=`grep '\-setcookie' $RUNNER_ETC_DIR/vm.args`
if [ -z "$COOKIE_ARG" ]; then
    echo "vm.args needs to have a -setcookie parameter."
    exit 1
fi

# Identify the script name
SCRIPT=`basename $0`

# Parse out release and erts info
START_ERL=`cat $RUNNER_BASE_DIR/releases/start_erl.data`
ERTS_VSN=${START_ERL% *}
APP_VSN=${START_ERL#* }

# Add ERTS bin dir to our path
ERTS_PATH=$RUNNER_BASE_DIR/erts-$ERTS_VSN/bin

# Setup command to control the node
NODETOOL="$ERTS_PATH/escript $ERTS_PATH/nodetool $NAME_ARG $COOKIE_ARG"

# Check the first argument for instructions
case "$1" in
    status)
        if [ $# -ne 1 ]; then
            echo "Usage: $SCRIPT status"
            exit 1
        fi

        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "Node is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl status $@
        ;;

    cluster)
        if [ $# -gt 2 ]; then
            echo "Usage: $SCRIPT cluster [<Node>]"
            exit 1
        fi

        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl cluster $@
        ;;

    useradd)
        if [ $# -ne 3 ]; then
            echo "Usage: $SCRIPT useradd <Username> <Password>"
            exit 1
        fi

        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl useradd $@
        ;;

    userdel)
        if [ $# -ne 2 ]; then
            echo "Usage: $SCRIPT userdel <Username>"
            exit 1
        fi

        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl userdel $@
        ;;

    broker)
        if [ $# -gt 2 ]; then
            echo "Usage: $SCRIPT broker [stats | metrics]"
            exit 1
        fi

        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl broker $@
        ;;

    bridges)
        if [ $# -gt 1 ]; then
            echo "Usage: $SCRIPT bridges"
            exit 1
        fi
        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl bridges $@
        ;;

    start_bridge)
        if [ $# -ne 3 ]; then
            echo "Usage: $SCRIPT start_bridge <Node> <Topic>"
            exit 1
        fi

        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl start_bridge $@
        ;;

    stop_bridge)
        if [ $# -ne 3 ]; then
            echo "Usage: $SCRIPT stop_bridge <Node> <Topic>"
            exit 1
        fi

        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl stop_bridge $@
        ;;

    listeners)
        if [ $# -gt 1 ]; then
            echo "Usage: $SCRIPT listeners"
            exit 1
        fi
        # Make sure the local node IS running
        RES=`$NODETOOL ping`
        if [ "$RES" != "pong" ]; then
            echo "emqttd is not running!"
            exit 1
        fi
        shift

        $NODETOOL rpc emqttd_ctl listeners $@
        ;;

    *)
        echo "Usage: $SCRIPT"
		echo "		status       	               #query emqttd status"
		echo "		listeners                      #query emqttd listeners"
		echo "		broker [stats | metrics]       #query broker stats/metrics"
		echo "		cluster [<Node>]               #query or cluster nodes"
        echo "		bridges                        #query bridges"
        echo "		start_bridge <Node> <Topic>    #start bridge"
        echo "		stop_bridge <Node> <Topic>     #stop bridge"
		echo "		useradd <Username> <Password>  #add user"
		echo "		userdel <Username>             #delete user"
        exit 1
        ;;
	
esac