#!//usr/bin/csh -f
#+
#NAME
# osirisStartVncServers - start required VNC servers for observing
#
#PURPOSE
#	determine the users vnc server based upon the username
#	then start the viewer
#
#USAGE
#	osirisStartVncServers
#	for now, run by SA, in future, generally will be run from pull-down
# 
#ARGUMENTS
#	[-restart] force a restart of the servers (not yet implemented)
# 
#OUTPUT
#	None
# 
#RESTRICTIONS
#	Must be run as osiris numbered account
#       Requires script osirisCleanVncDir
# 
#EXIT VALUES
#	0 = normal completion
#	1 = wrong number of arguments
#       2 = not run as numbered account
#       3 = not run on default computer (napili)
#
#EXAMPLES
#	1) Start the vncviewer in interactive mode:
#		osirisStartVncServers
#
#-
# Modification history:
#	2006 Mar 10	jlyke	Original - adapted from osiris_vncviewer
#       2006 Apr 25     jlyke   1st working version
#       2006 May 04     jlyke   Paradigm shift to let vncserver handle
#                               the port number assignment
#       2006 Jun 07     jlyke   Added -IdleTimeout 0 option so that viewers
#                               are not cut off after 1 hour inactivity
#
#-----------------------------------------------------------------------

# define initial values...
set buf = $0
set cmd = $buf:t
set usage = "Usage: $cmd [-restart]"
# alias echo so we can ring the bell
alias echo /usr/bin/echo


# define defaults
set pid = $$
set computer = "napili"
set logdir = "~/.vnc"
set viewonly = ""
set depth = 24
echo ""
set user = `whoami`
set control_name = "OSIRIS Control ($user)"
set drp_name = "OSIRIS DRP ($user)"
set remote_name = "OSIRIS 8-bit display ($user)"

set control_string = "Control"
set drp_string = "DRP"
set remote_string = "8-bit"

# make sure an osiris numbered account is running this script
set userbase = `whoami | cut -c 1-6`
set num = `whoami | cut -c 7-`
if ( $userbase != "osiris" ) then
  echo ""
  echo "\aWarning: $cmd must be run as an osiris numbered account"
  echo ""
  exit 2
else if ( $num == "" || $num == "eng" ) then
  echo ""
  echo "\aWarning: $cmd must be run as an osiris numbered account"
  echo ""
  exit 2
endif

# make sure we're running on napili
set mycomp = `hostname`
if ( $mycomp != $computer ) then
  echo ""
  echo "\aWarning: $cmd must be run from $computer"
  echo ""
  exit 3
endif

# Parse arguments.
while ($#argv > 0)
    switch ($1)
    case "-viewonly":
        set viewonly = "-viewonly"
        breaksw
    case "-restart":
	set restart
    default:
        cat <<HUH

Did not understand the argument "$1".

$usage

HUH
        exit 1

    endsw
    shift
end

# clean out the vnc $logdir of non-used .log, .pid, and .info files
osirisCleanVncDir

# check servers already running as $control_name, $drp_name, or $remote_name
foreach server ( control drp remote )
  set skip = 0

  # set server-specific parameters
  switch ($server)
    case control:
      set name = ($control_name)
      set string = ($control_string)
      breaksw
    case drp:
      set name = ($drp_name)
      set string = ($drp_string)
      breaksw
    case remote:
      set name = ($remote_name)
      set string = ($remote_string)
      set depth = 8
      breaksw  
  endsw

  set run = ()
  set run = `awk '/'$string'/' $logdir/*.info`
  if ( $#run > 0 ) then  
    set skip = 1
    # grab the last field on that line
    while ( $#run > 0 )
      set viewer = $run[1]
      shift run
    end
  endif

  # if not running, start the VNC server and write output to a file
  if ( $skip ==  0 ) then
    echo ""
    echo "Starting VNC server: $server"
    vncserver -name "$name" -depth $depth -IdleTimeout 0 >& $logdir"/"$pid".info"

    # rename the file and display it
    set line = `grep "New" $logdir"/"$pid".info"`
    while ( $#line > 0 )
      set file = $line[1]
      shift line
    end
    mv $logdir"/"$pid".info" $logdir"/"$file".info"
    cat $logdir"/"$file".info"
  else
    echo ""
    echo "$name is already running as $viewer"
  endif

end

# reset echo
unalias echo

exit 0