#!/usr/bin/env bash

set -e
set -x

PPC_RELEASE=$1

if [ ! -e "$PPC_RELEASE" ]; then
  PPC_RELEASE=/usr/local/lib/fpc/2.0.2/ppcppc
  echo "Using default PPC_RELEASE: $PPC_RELEASE"
fi

FPCSVNDIR=$2
if [ ! -d "$FPCSVNDIR" ]; then
  FPCSVNDIR=~/src/fpcbuild/2.0.4
  echo "Using default FPCSVNDIR: $FPCSVNDIR"
fi

FREEZE=/usr/local/bin/freeze
if [ ! -e "$FREEZE" ]; then
  FREEZE=/usr/bin/freeze
fi
if [ ! -e "$FREEZE" ]; then
  echo "Cannot find freeze"
fi

HDIUTIL=/usr/bin/hdiutil
UPDATELIST=~/tmp/updatelist
TEMPLATEDIR=`dirname $0`
FPCSOURCEDIR=$FPCSVNDIR/fpcsrc
BUILDDIR=~/tmp/build
FPCBUILDDIR=$BUILDDIR/fpc
INSTALLDIR=~/tmp/fpc
INSTALLFPCDIR=~/fpc
TRASHDIR=~/tmp/trash

PPCARCH=ppcppc
CREATECROSSPPC=0

ARCH=`uname -p`
if [ "$ARCH" = "i386" ]; then
  PPCARCH=ppc386
  CREATECROSSPPC=1
fi

SVN=`which svn`
if [ ! -e "$SVN" ]; then
  SVN=/usr/local/bin/svn
fi

if [ ! -e "$SVN" ]; then
  SVN=/sw/bin/svn
fi

if [ ! -e "$SVN" ]; then
  echo "Cannot find a svn executable"
fi

DATESTAMP=`date +%Y%m%d`
FPCPACKPROJ=fpc.packproj

cd $FPCSVNDIR
$SVN update 

if [ ! -d $BUILDDIR ] ; then
  mkdir -p $BUILDDIR
else
  if [ -d $FPCBUILDDIR ] ; then
    rm -rf $FPCBUILDDIR 
  fi
fi

$SVN export $FPCSVNDIR $FPCBUILDDIR
if [ ! -d  "$FPCBUILDDIR/fpcsrc" ]; then
# old versions of svn did not export external repositories
  $SVN export $FPCSVNDIR/fpcsrc $FPCBUILDDIR/fpcsrc
  $SVN export $FPCSVNDIR/fpcdocs $FPCBUILDDIR/fpcdocs
fi

cd $FPCBUILDDIR
export NOGDB=1
make distclean PP=$PPC_RELEASE
make build PP=$PPC_RELEASE DATA2INC=$FPCBUILDDIR/fpcsrc/utils/data2inc

COMPILER=$FPCBUILDDIR/fpcsrc/compiler/$PPCARCH
FPCVERSION=`$COMPILER -iV`
FPCFULLVERSION=`$COMPILER -iW`
FPCARCH=`$COMPILER -iSP`

# clean installdir: since I am not root and the install dir can contain files owned by root 
# created by a previous freeze, I just move it out of the way
mkdir -p $TRASHDIR

set +e
rm -rf $INSTALLDIR
set -e

if [ -d $INSTALLDIR ]; then
  mv $INSTALLDIR $TRASHDIR
fi
mkdir -p $INSTALLDIR
make install PP=$COMPILER INSTALL_PREFIX=$INSTALLDIR

# install for use by lazarus
make -C fpcsrc compiler_install rtl_install packages_install utils_install \
  INSTALL_PREFIX=$INSTALLFPCDIR PP=$COMPILER FPCMAKE=$FPCBUILDDIR/fpcsrc/utils/fpcm/fpcmake

make -C fpcsrc/compiler installsymlink PP=$COMPILER INSTALL_PREFIX=$INSTALLFPCDIR

if [ $CREATECROSSPPC == 1 ]; then
  make all PP=$PPC_RELEASE CPU_TARGET=powerpc CROSSINSTALL=0
  
  CROSSCOMPILER=$FPCBUILDDIR/fpcsrc/compiler/ppcrossppc
  make -C fpcsrc compiler_install rtl_install packages_install CPU_TARGET=powerpc FPC=$CROSSCOMPILER CROSSINSTALL=0 \
     INSTALL_PREFIX=$INSTALLDIR FPCMAKE=$FPCBUILDDIR/fpcsrc/utils/fpcm/fpcmake
  # install for use by lazarus
  make -C fpcsrc compiler_install rtl_install packages_install CPU_TARGET=powerpc FPC=$CROSSCOMPILER CROSSINSTALL=0 \
    INSTALL_PREFIX=$INSTALLFPCDIR FPCMAKE=$FPCBUILDDIR/fpcsrc/utils/fpcm/fpcmake EXENAME=ppcppc

  #make -C fpcsrc/compiler CPU_TARGET=powerpc installsymlink FPC=$CROSSCOMPILER INSTALL_PREFIX=$INSTALLFPCDIR CROSSINSTALL=0
  ln -sf ../lib/fpc/$FPCVERSION/ppcrossppc $INSTALLFPCDIR/bin/ppcppc
  ln -sf ../lib/fpc/$FPCVERSION/ppcrossppc $INSTALLDIR/bin/ppcppc
fi

# create symlink using relative paths, make symlinkinstall uses absolute path, 
# which then ends up as link to the temporary build path
# on the user's machine after installation
ln -sf ../lib/fpc/$FPCVERSION/$PPCARCH $INSTALLDIR/bin/$PPCARCH

# fill in packproj template.
OLDIFS=$IFS
IFS=.
FPCMAJORVERSION=`set $FPCVERSION;  echo $1`
FPCMINORVERSION=`set $FPCVERSION;  echo $2$3`
IFS=$OLDIFS
sed -e "s|_PPCARCH_|$PPCARCH|g" -e "s|_FPCSRCDIR_|$FPCSVNDIR|g" \
  -e "s|_FPCVERSION_|$FPCVERSION|g" -e "s|_FPCFULLVERSION_|$FPCFULLVERSION|g" \
  -e "s|_DATESTAMP_|$DATESTAMP|g" -e s/_FPCMAJORVERSION_/$FPCMAJORVERSION/g \
  -e "s/_FPCMINORVERSION_/$FPCMINORVERSION/g" -e "s/_FPCARCH_/$FPCARCH/g" \
  $TEMPLATEDIR/$FPCPACKPROJ.template  > $INSTALLDIR/$FPCPACKPROJ

# build package
$FREEZE -v $INSTALLDIR/$FPCPACKPROJ

DMGFILE=~/pkg/fpc-$FPCFULLVERSION-$DATESTAMP-$FPCARCH-macosx.dmg
rm -rf $DMGFILE

$HDIUTIL create -anyowners -volname fpc-$FPCVERSION -imagekey zlib-level=9 -format UDZO -srcfolder $INSTALLDIR/build $DMGFILE

if [ -e $DMGFILE ]; then
#update lazarus snapshot web page
  echo "$DMGFILE fpc-$FPCFULLVERSION-*-$FPCARCH-macosx.dmg" >> $UPDATELIST
fi