#!/bin/bash

# This file controls the start/stop/restart process for the
# random signature chooser.

#command="$HOME/bin/signature.py"
command="$HOME/bin/signature.py"
logfile="$HOME/.log/sign_log"
pidfile="$HOME/.log/sign_pid"

# The fortunes file in wich to choose signature
fortunes="$HOME/perso/fortunes"

# The data file for use with the fortune program
data="${fortunes}.dat"

# The 'fortune' program
fortune=/usr/games/fortune

is_running()
{
    if [ -r $pidfile ]
    then
	pid=`cat $pidfile`
	if ps -ae | grep $pid | grep -v grep >/dev/null 2>&1
	then
	    # $pid still running ...
	    test $pid -ne 0
	else
	    # $pid not running ... update the log file, and fail
	    rm $pidfile
	    return 1
	fi
    else
	return 1
    fi
}

start()
{
    echo -n "Starting signature ... "
    rm -f $logfile
    $command $fortunes > $logfile 2>&1 &
    pid=$!
    echo $pid > $pidfile

    sleep 1

    if is_running
    then
	echo "done"
    else
	[ -f $pidfile ] && rm -f $pidfile
	echo "failed"
    fi
}

stop()
{
    echo -n "Stopping signature ... "

    if is_running
    then
	pid=`cat $pidfile`
	if kill -TERM $pid >/dev/null 2>&1
	then
	    rm -f $pidfile
	    echo "done"
	else
	    echo "failed"
	fi
    else
	echo "no started"
    fi
}

once()
{
    if is_running
    then
		cat .signature
		echo
    else
		cat .signature
		echo
		[ -r $data ] && $fortune $fortunes || cat .signature
    fi
}

rehash()
{
    strfile $fortunes $data
	pid=`cat $pidfile`
	kill -HUP $pid
}

case "$1" in
    "start")
	if is_running
	then
	    echo "Signature already started"
	else
	    start
	fi
	;;

    "stop")
	if is_running
	then
	    stop
	else
	    echo "Signature not running"
	fi
	;;

    "restart")
	stop
	start
	;;

    "status")
	if is_running
	then
	    echo "Signature is running"
	else
	    echo "Signature is not running"
	fi
	;;

    "once")
	once
	;;

    "rehash")
	rehash
	;;

    *)
	prog=`basename $0`
	echo "usage: $prog start|stop|restart|status|once|rehash"
	;;
esac