#!/bin/bash
# Script to build Khaganat binary (executed in docker)
#
#    Copyright (C) 2017  AleaJactaEst
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.
#

declare DIRBUILD="/opt/build/"
declare DIRCODEUSE="/opt/build/opennel-code"
declare DIRCODE="/opt/ref/opennel-code"
declare CXXFLAGS=""
declare -i DONTCOPYSOURCE=0

function usage()
{
cat << EOF
usage:$0 [options] <workdir>
  internal script to build under docker

workdir: directory use to buid

options:
  -h, --help       : Show this help
  -d, --debug      : Show debug message
  --add-opts-cmake="string" : add option use on command cmake (generate Makefile)
  --add-opts-make="string" : add option use on command make
  --cxxflags=[String] : adding cxx flags when generate Makefile (and build)
  --dont-copy-source : disable copy source, work directly on source (apply patch)
EOF
}

function chrashed()
{
   local code=$?
   echo "$(date "+%Y/%m/%d %H:%M:%S") ERROR - BUILD (under docker) FAILED (code:$code)"
   if [ -n "$LOGFILE" ]
   then
      echo "$(date "+%Y/%m/%d %H:%M:%S") ERROR - BUILD (under docker) FAILED (code:$code)" >> $LOGFILE
   fi
   exit 2
}

function msg_error()
{
   echo "$(date "+%Y/%m/%d %H:%M:%S") ERROR - $1"
   if [ -n "$LOGFILE" ]
   then
      echo "$(date "+%Y/%m/%d %H:%M:%S") ERROR - $1" >> $LOGFILE
   fi
}

function msg_info()
{
   echo "$(date "+%Y/%m/%d %H:%M:%S") INFO - $1"
   if [ -n "$LOGFILE" ]
   then
      echo "$(date "+%Y/%m/%d %H:%M:%S") INFO - $1" >> $LOGFILE
   fi
}

function msg_debug()
{
   if [[ $DEBUG -ne 0 ]]
   then
      echo "$(date "+%Y/%m/%d %H:%M:%S") DEBUG - $1"
      if [ -n "$LOGFILE" ]
      then
         echo "$(date "+%Y/%m/%d %H:%M:%S") DEBUG - $1" >> $LOGFILE
      fi
   fi
}

function patch_onlyifnotapply()
{
  # Check path is apply or not (if not apply patch)
  msg_debug "check patch $1"
  if ! patch -Z -t -R -s -f --dry-run -p 1 -i $1 1>/dev/null
  then
     msg_debug "patch $1"
     patch -f -Z -t -p 1 -i $1 || exit 2
  fi
}

#
# MAIN
#

trap chrashed EXIT

while test $# -gt 0
do
   case "$1" in
      -h|--help)
         usage
         exit 1
         ;;
      -d|--debug)
         DEBUG=1
         shift
         ;;
      --add-opts-cmake=*)
         CMAKEOPTS="$CMAKEOPTS ${1#*=}"
         shift
         ;;
      --add-opts-make=*)
         MAKEOPTS="$MAKEOPTS ${1#*=}"
         shift
         ;;
      --build-dir=*)
         DIRBUILD="${1#*=}"
         shift
         ;;
      --code-dir=*)
         DIRCODE="${1#*=}"
         shift
         ;;
      --cxxflags=*)
         CXXFLAGS="$CXXFLAGS ${1#*=}"
         shift
         ;;
      --dont-copy-source)
         DONTCOPYSOURCE=1
         DIRCODEUSE="$DIRCODE"
         shift
         ;;
      *)
         msg_error "options '$1' not recognize"
         usage
         exit 2
         ;;
   esac
done

declare LOGFILE="${DIRBUILD}/build.log"

msg_debug "DIRBUILD:$DIRBUILD"
msg_debug "DIRCODE:$DIRCODE"
msg_debug "CMAKEOPTS:$CMAKEOPTS"
msg_debug "MAKEOPTS:$MAKEOPTS"
msg_debug "LOGFILE:$LOGFILE"
msg_debug "CXXFLAGS:$CXXFLAGS"
msg_debug "DONTCOPYSOURCE:$DONTCOPYSOURCE"

msg_info "CREATE BUILD DIRECTORY"
mkdir -p ${DIRBUILD}/ || exit 2

if [[ $DONTCOPYSOURCE -eq 0 ]]
then
    msg_info "COPY CODE"
    mkdir -p ${DIRBUILD}/opennel-code
    cp -pr $DIRCODE/* ${DIRBUILD}/opennel-code
fi

msg_info "PATCH CODE"
for patchfile in $(cat ${DIRCODEUSE}/patch/series)
do
   cd ${DIRCODEUSE}
   patch_onlyifnotapply ${DIRCODEUSE}/patch/$patchfile
done

msg_info "PREPARE BUILD"
msg_debug "cmake option : -DWITH_NEL=ON -DWITH_STATIC=ON -DWITH_STATIC_DRIVERS=ON -DWITH_STATIC_EXTERNAL=ON -DWITH_SYMBOLS=ON -DWITH_LUA52=ON -DWITH_RYZOM_PATCH=ON  -DWITH_RYZOM_CUSTOM_PATCH_SERVER=ON ${CMAKEOPTS}"
cd ${DIRBUILD}; CXXFLAGS="$CXXFLAGS" cmake -DWITH_NEL=ON \
                      -DWITH_STATIC=ON \
                      -DWITH_STATIC_DRIVERS=ON \
                      -DWITH_STATIC_EXTERNAL=ON \
                      -DWITH_SYMBOLS=ON \
                      -DWITH_LUA52=ON  \
                      -DWITH_RYZOM_PATCH=ON  \
                      -DWITH_RYZOM_CUSTOM_PATCH_SERVER=ON \
                      ${CMAKEOPTS} \
                      ${DIRCODEUSE}/code 1>>$LOGFILE 2>&1 || exit 2

msg_info "BUILD START"
msg_debug "make option : $MAKEOPTS"
cd ${DIRBUILD}; VERBOSE=1 make $MAKEOPTS 1>>$LOGFILE 2>&1 || exit 2

trap '' EXIT
msg_info "BUILD END"