#!/bin/bash
######################################################################
# Artemis Nebula Artemis script, (C) 2015-2020 Nosey Nick Waterman,
#   <nebula@noseynick.org>   https://noseynick.org/artemis/nebula/
# All wrong righted, all rights reserved. Licensed under thev GNU
# Affero General Public License v3.0 https://www.gnu.org/licenses/agpl.txt
# with Commons Clause https://commonsclause.com/ v1.0
######################################################################

# shellcheck disable=SC1090 # don't parse when shellchecking:
. ~/bin/conf.sh
[[ "$DISPLAY" ]] || export DISPLAY=:20
cd || exit 9

if [[ "$EE_VER" ]]; then
  banner Run EE
  pkill EmptyEpsilon ; sleep 2 ; pkill -9 EmptyEpsilon ; sleep 2
  # shellcheck disable=SC2086 # deliberate word splitting of $EE_OPTS
  /usr/local/bin/EmptyEpsilon ${EE_PROXY:+proxy=$EE_PROXY} ${EE_OPTS} >> ~/logs/EE.log 2>&1 &
  [[ "$RUNTEST" ]] && nebula "$RUNTEST" bash
  exit 0
elif cd 0.* || cd 0-*; then
  banner Artemis Cosmos PRE-RELEASE
  pkill -f    Artemis3-x64-release.exe; pkill    wineserver64; pkill    winedbg
  sleep 2
  pkill -f -9 Artemis3-x64-release.exe; pkill -9 wineserver64; pkill -9 winedbg
  pulseaudio --start
  # winetricks arch=64 win10 sound=pulse  d3dx9 d3dcompiler_47
  winetricks arch=64 win7 sound=pulse  d3dx9 d3dcompiler_47
  rm -rfv ~/.cache # -- bit tight on space?
  # nebula https://aka.ms/vs/17/release/vc_redist.x64.exe wine /passive
  # x-terminal-emulator -e wine Artemis3-x64-release.exe &
  wine Artemis3-x64-release.exe &
  RUNNING=''
  for X in {40..1}; do
    date "+#### %F %T : Waiting $X secs for cosmos..."
    sleep 1
    # Test for window AND move it to avoid "off the left of the screen" bug:
    if xdotool search --name Engine windowmove 0 -5; then
      RUNNING=yes; break
    fi
  done
  if [[ "$RUNNING" ]]; then
    banner "Nebula Cosmos server is ready! *start game $IP ${NAME:-[Mod]} [level]"
  else
    banner Cosmos failed to start properly
  fi
  exit 0
fi

banner Artemis mods and config

cd 2.* || exit 9

pkill    Artemis.exe ; pkill    wineserver32
sleep 2
pkill -9 Artemis.exe ; pkill -9 wineserver32

[[ "$MISSIONS" ]] && nebula missions bash

echo "$MISSIONS" | grep -q 'nginecho' && crontab - <<__EOF__
# m  h  dom mon dow command
*/30 *  *   *   *   ~/bin/missions > ~/logs/missions.log 2>&1
$(crontab -l | grep -Ev '^# m |missions')
__EOF__

grep -q ^gameWindowMode= artemis.ini || cat >> artemis.ini <<__INI__

; Added for NoseyNick "Nebula":

gameWindowWidth=${NEB_WIDTH:-1280}
gameWindowHeight=${NEB_HEIGHT:-700}
gameWindowMode=2

__INI__

PORT=2010
if [[ "$HERMES" ]]; then
  PORT=2011 # for Artemis itself. Hermes will listen on regular 2010
  sed -i~ -e '/networkPort/ d' artemis.ini
  echo networkPort=$PORT   >> artemis.ini
  
  [[ "$HERMES_STARTUP" ]] || HERMES_STARTUP=dummy # 0-byte file
  nebula https://github.com/StarryWisdom/hermes-bin/raw/master/hermes
  nebula "$HERMES"         "ln -fs" ~/bin/hermes_connect.lua # probably the ship names
  nebula "$HERMES_STARTUP" "ln -fs" ~/bin/hermes_startup.lua # probably 0 bytes
  ( cd ~/bin && hermes >> ~/logs/hermes.log 2>&1) &  # will die PDQ if port already in use.
  # Check with a comms client by sending:   /hermes version
fi

# to dismiss requests for Mono and .net and stuff:
WINEDLLOVERRIDES="mscoree,mshtml=" wineboot -u
# OLD WAY:
# DISPLAY=DUMMY  wine regedit '/?' >/dev/null
# sleep 7 # Seems to reduce liklihood that Artemis.exe will crash on first run?  :-/

######################################################################
# Some TCP tuning:
# See also https://pracucci.com/linux-tcp-rto-min-max-and-tcp-retries2.html

sudo sysctl -f - <<__TUNING__
net.ipv4.tcp_fin_timeout=5 # restart quicker after server crash
net.ipv4.tcp_retries1 = 2 # fewer retries
net.ipv4.tcp_retries2 = 4 # fewer retries - just over 10sec
net.ipv4.tcp_keepalive_time=5 # probe conns after N secs of idle
net.ipv4.tcp_keepalive_intvl=3 # probe dead conns every N secs
net.ipv4.tcp_keepalive_probes=3 # ... and kill them after N tries
net.ipv4.tcp_tw_reuse=1 # to re-use conns in TIMEWAIT
__TUNING__

######################################################################
# Check port is free
SS=netstat
[[ -x /usr/bin/ss ]] && SS=/usr/bin/ss
for X in {20..1}; do
  date "+#### %F %T : Checking TCP port $PORT is free ($X)..."
  $SS -apn 2>&1 | grep "^tcp.*:$PORT" || break
  sleep 5
done

######################################################################
# ++++++++++++++++++ Consider DxWnd? https://sourceforge.net/projects/dxwnd/
# https://artemis.forumchitchat.com/post/windows-10-performance-fix-increase-frame-rate-4x-10103464?highlight=fps

# ACTUALLY RUN ARTEMIS:
# ++++++ devnull until Thom fixes Simulation::Tick-NNN Player::Tick-NNN spam:
wine Artemis.exe >/dev/null &

cd || exit

RUNNING=''
for X in {40..1}; do
  date "+#### %F %T : Waiting $X secs for server..."
  sleep 1
  if $SS -apn 2>&1 | grep 0.0.0.0:$PORT; then RUNNING=yes; break; fi
  timeout 1 click-SERVER
done

######################################################################
# IF we are running...
if [[ "$RUNNING" ]]; then
  sleep 2 # to give GUI time to catch up
  timeout 1 click-FPS
  timeout 1 click-game-solo
  sleep 1
  if [[ "$SHIPS" ]]; then
    # shellcheck disable=SC2086 # deliberately word splitting:
    nebula $SHIPS perl | nc -q2 127.1 2010 | parser.pl
    sleep 1            | nc -q2 127.1 2010 | parser.pl
  fi
  
  banner "Nebula Server is ready! *start game $IP ${NAME:-[Mod]} [level]"
  # If we have an IP, and a channel/token/script for discord:
  if [[ "$IP" ]] && [[ -x ~/bin/discord.sh ]]; then
    echo "Nebula Server is ready! *start game $IP ${NAME:-[Mod]} [level]" \
    |        discord.sh --send
    DISC_ARG=--discord
  fi
  
  BLINK=0 nebula logger.sh bash --loop --heartbeat --up $DISC_ARG \
    127.0.0.1 Nebula "$NAME" \
  >> logs/logger.log 2>&1 &
  
  [[ "$RUNTEST" ]] && nebula "$RUNTEST" bash
else
  banner Artemis failed to start properly
fi

# ++++++++++ AUTO SHUTDOWN on empty?
# ++++++++++ Puppy / comms accept commands to customise, shutdown, etc?