#!/bin/bash
#
#    Script to launch server
#
#    Copyright (C) 2023 AleaJactaEst
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
declare DEBUG=0
declare HELP=0
declare BUILD=0
declare WORKDIR="$(dirname $(readlink -f $0))"
declare RUSTDIR="$WORKDIR/.rust"
declare SERVERDIR="$WORKDIR/server"

function msg_debug()
{
   if [ $DEBUG -ne 0 ]
   then
     echo "### DEBUG : $*" >&2
   fi
}

function msg_info()
{
   echo "--- INFO : $*" >&2
}

function msg_error()
{
   echo "*** ERROR : $*" >&2
}

function byebye()
{
  local CODE=$?
  if [ $CODE -ne 0 ]
  then
    msg_error "return code:$code"
  else
    msg_info "End"
  fi
  exit $CODE
}

while getopts hdb flag
do
    case "${flag}" in
        h) HELP=1;;
        d) DEBUG=1;;
        b) BUILD=1;;
        *) HELP=1;;
    esac
done

if [[ $HELP -ne 0 ]]
then
   cat << EOF
$(basename $0) [Option] : Donwload Launch Godot
  Option:
     -h : Show help
     -d : Show debug message
     -b : (re)build program
EOF
  exit 1
fi

trap byebye EXIT

msg_info "Start"
msg_debug "WORKDIR:$WORKDIR"


if [[ ($BUILD -ne 0) || (! -x $SERVERDIR/target/debug/server) ]]
then
  export CARGO_HOME="$RUSTDIR/.cargo"
  export RUSTUP_HOME="$RUSTDIR/.rustup"

  mkdir -p $RUSTDIR
  if [ ! -f $RUSTDIR/install.sh ]
  then
    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > $RUSTDIR/install.sh
  fi
  if [ ! -f $RUSTDIR/.cargo/env ]
  then
    sh  .rust/install.sh -t $RUSTDIR/.cargo --no-modify-path -y
    # curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -h
  fi
  if [ -f $RUSTDIR/.cargo/env ]
  then
    source $RUSTDIR/.cargo/env
    cd $SERVERDIR
    cargo build
  else
    msg_error "Error to load envi rust"
    exit 2
  fi
fi

$SERVERDIR/target/debug/server

# END (call function byebye)