#!/bin/sh

####################################################
# Smaug startup script in bash                     #
# Written by Khtall for Sabrous                    #
# Functions the same as the normal startup script, #
# but it's written in bash, not csh.               #
####################################################

#Name of the shutdown logfile
shutdown='shutdown.txt'

#If a port number was provided ($1 has nonzero length)...
if [ -n "$1" ] 
then
  #Use the specified value
  port="$1"
else
  #Otherwise, use the default value
  port=4000
fi

#Because Smaug has to be run from the areas folder, move to it
cd "../area"

#If there is a leftover shutdown file from the last time Smaug was run...
if [ -e "$shutdown" ]
then
  #...then remove it to avoid confusion.
  rm -f "$shutdown"
fi

#Keep restarting Smaug if it dies unless it was deliberately shut down
while (true)
do
  
  #Keep trying logfile numbers until we find one that doesn't exist.
  #Start at 1000, for some reason the Smaug coders decided on.
  lognumber=1000
  logfile=../log/$lognumber.log
  while [ -e "$logfile" ]
  do
    lognumber=`expr $lognumber + 1`
    logfile=../log/$lognumber.log
  done
  
  #Append the time the MUD started up at to the log and boot files.
  date > "$logfile"
  date > "../area/boot.txt"
  
  #Check if Smaug is already running by checking if the selected port
  #is already bound.
  #matches=`netstat -an | grep ":$port " | grep -c LISTEN`
  #if [ "$matches" -ge 1 ]
  #then
    #Smaug is already running, or something else has that port.
    #echo Port $port is already in use.
    #echo Make sure that Smaug is not already running.
    #echo If it is not, make sure nothing else is using port $port.
    #We can't do anything, so exit the script
    #exit 0
  #fi
  
  #Run Smaug. Use nohup so that it keeps going even after a terminal logout.
  nohup ../src/smaug $port >&! $logfile
  
  #If we get here, Smaug has exited. Check if it was shut down, first:
  if [ -e "$shutdown" ]
  then
    #Smaug was shut down and should not be restarted.
    #Before we finish, remove the leftover shutdown file.
    rm -f $shutdown
    #Normal exit
    exit 0
  fi
  
  #Wait a moment to let old connections die.
  sleep 15
  
done

#Check if Smaug is already running by checking if the selected port
#is already bound.
matches=`netstat -an | grep ":$port " | grep -c LISTEN`
if [ "$matches" -ge 1 ]
then
#Smaug is already running, or something else has that port.
echo Port $port is already in use.
echo Make sure that Smaug is not already running.
echo If it is not, make sure nothing else is using port $port.
#We can't do anything, so exit the script
exit 0
fi

#! /bin/tcsh