#!/bin/bash

function on_error() {
  xset r on
  echo
  echo "TnL has exited with a non-zero return value."
  echo "This usually means that something has gone wrong and the game has crashed."
  echo "  * See /tmp/stdout.txt and /tmp/stderr.txt for information"
  echo "    on what happened."
  echo "  * Visit http://tnlgame.net for information and to contact"
  echo "    the author and the community."
  echo "  * If you want to help the author fix this bug, send a copy"
  echo "    of /tmp/stdout.txt and /tmp/stderr.txt to bugs@tnlgame.net"
  echo "    or post it on the discussion board at http://forum.tnlgame.net"
  if [[ $debug_enabled==no ]]; then
    echo "  * If you would like to debug TnL, start again with"
    echo "    tnl --debug or set TNL_DEBUG=1"
  fi
  echo
  echo -n "Press Enter to continue."
  read
  exit -1
}


exec_dir_relative=`dirname $0`
exec_dir=`cd $exec_dir_relative; pwd`
base_dir=`cd $exec_dir/..;pwd`
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$base_dir/lib:$base_dir/lib/tnl"

command="$exec_dir/tnl-bin"

debug_enabled=no
verbose_enabled=no

while [[ $# -gt 0 ]]; do
  if [[ $1 == "-d" || $1 == "--debug" ]]; then
    debug_enabled=yes
  elif [[ $1 == "-v" || $1 == "--verbose" ]]; then
    verbose_enabled=yes
  fi
  shift
done

if [[ -n "$TNL_DEBUG" ]]; then
  debug_enabled=yes
fi


if [[ $debug_enabled == yes ]]; then
  debug_1="ddd --args"
  debug_2="valgrind -v --leak-check=yes --log-file=tnl --num-callers=18"
  debug_3="gdb --args"
  echo "Please choose a debugger:"
  echo "1 $debug_1"
  echo "2 $debug_2"
  echo "3 $debug_3"
  read num
  case $num in
    1) command="$debug_1 $command" ;;
    2) command="$debug_2 $command" ;;
    3) command="$debug_3 $command" ;;
  esac
fi

# CEGUI will write its log file (CEGUI.log) into the current directory.
# Unfortunately, it will crash if that directory is not writable.
# Workaround: start from /tmp, which usually is writable (which we test)
if [[ -z "$TNL_WORKING_DIR" ]]; then
  TNL_WORKING_DIR=/tmp
fi

if [[ ! -d "$TNL_WORKING_DIR" ]]; then
  echo "Working directory '$TNL_WORKING_DIR' is not a directory."
  echo "Please pass a different directory in \$TNL_WORKING_DIR."
  exit 1
fi
if [[ ! -w "$TNL_WORKING_DIR" ]]; then
  echo "Working directory '$TNL_WORKING_DIR' is not writable."
  echo "Please pass a different directory in \$TNL_WORKING_DIR"
  echo "or make '$TNL_WORKING_DIR' a writable directory."
  exit 1
fi
if [[ ! -x "$TNL_WORKING_DIR" ]]; then
  echo "Working directory '$TNL_WORKING_DIR' is not executable."
  echo "Please pass a different directory in \$TNL_WORKING_DIR"
  echo "or make '$TNL_WORKING_DIR' an executable directory."
  exit 1
fi

cd $TNL_WORKING_DIR || exit 1

echo "Logging to directory '$TNL_WORKING_DIR'"

echo $command $@
if [[ $debug_enabled == yes ]]; then
  $command $@
elif [[ $verbose_enabled == yes ]]; then
  $command $@
else
  $command $@ >stdout.txt 2>stderr.txt
fi
if [[ $? != 0 ]]; then
  on_error
fi