#!/bin/bash

# Slackware build script for gnatstudio-bin

# Copyright 2024, Zhu, Qun-Ying
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=gnatstudio-bin
VERSION=${VERSION:-25.0w.20240506}
SRC_FILE="gnatstudio-25.0w-20240506-x86_64-linux-bin.tar.gz"
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    x86_64 ) ARCH=x86_64 ;;
    * ) echo "Only x86_64 is supported."
	exit ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP

mkdir -p $PKG/opt/gnatstudio
tar xvf $CWD/$SRC_FILE -C $PKG/opt/gnatstudio --strip-components=1
cd $PKG/opt/gnatstudio
rm doinstall
chown -R root:root .

find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

mkdir -p $PKG/etc/profile.d
cat $CWD/gnatstudio-bin.sh > $PKG/etc/profile.d/gnatstudio-bin.sh
cat $CWD/gnatstudio-bin.csh > $PKG/etc/profile.d/gnatstudio-bin.csh
chmod +x $PKG/etc/profile.d/*

# the binary release of gnatstudio has so many duplicate files, most of them
# are suppose to be symbolic links :(
# change directory to support libs and replase those duplicate files with
# symbolic link
(cd $PKG/opt/gnatstudio/lib/gnatstudio/
 ln -sf libatk-1.0.so.0 libatk-1.0.so
 ln -sf libatk-bridge-2.0.so.0 libatk-bridge-2.0.so
 ln -sf libatspi.so.0 libatspi.so
 ln -sf libcairo-gobject.so.2 libcairo-gobject.so
 ln -sf libcairo-script-interpreter.so.2 libcairo-script-interpreter.so
 ln -sf libcairo.so.2 libcairo.so
 ln -sf libcroco-0.6.so.3 libcroco-0.6.so
 ln -sf libcups.so.2 libcups.so
 ln -sf libcupsimage.so.2 libcupsimage.so
 ln -sf libdbus-1.so.3 libdbus-1.so
 ln -sf libepoxy.so.0 libepoxy.so
 ln -sf libexpat.so.1 libexpat.so
 ln -sf libffi.so.8 libffi.so
 ln -sf libfontconfig.so.1 libfontconfig.so
 ln -sf libfreetype.so.6 libfreetype.so
 ln -sf libfribidi.so.0 libfribidi.so
 ln -sf libgailutil-3.so.0 libgailutil-3.so
 ln -sf libgdk-3.so.0 libgdk-3.so
 ln -sf libgdk_pixbuf-2.0.so.0 libgdk_pixbuf-2.0.so
 ln -sf libgettextlib-0.20.2.so libgettextlib.so
 ln -sf libgettextpo.so.0 libgettextpo.so
 ln -sf libgettextsrc-0.20.2.so libgettextsrc.so
 ln -sf libgio-2.0.so.0 libgio-2.0.so
 ln -sf libgirepository-1.0.so.1 libgirepository-1.0.so
 ln -sf libgladeui-2.so.13 libgladeui-2.so
 ln -sf libglib-2.0.so.0 libglib-2.0.so
 ln -sf libgmodule-2.0.so libgmodule-2.0.so.0
 ln -sf libgnatcoll_core.so.25.0w libgnatcoll_core.so.25
 ln -sf libgnatcoll_gmp.so.25.0w libgnatcoll_gmp.so.25
 ln -sf libgnatcoll_iconv.so.25.0w libgnatcoll_iconv.so.25
 ln -sf libgnatcoll_projects.so.25.0w libgnatcoll_projects.so.25
 ln -sf libgnatcoll_python3.so.25.0w libgnatcoll_python3.so.25
 ln -sf libgnatcoll_sql.so.25.0w libgnatcoll_sql.so.25
 ln -sf libgnatcoll_sqlite.so.25.0w libgnatcoll_sqlite.so.25
 ln -sf libgnatcoll_xref.so.25.0w libgnatcoll_xref.so.25
 ln -sf libgobject-2.0.so.0 libgobject-2.0.so
 ln -sf libgthread-2.0.so.0 libgthread-2.0.so
 ln -sf libgtk-3.so.0 libgtk-3.so
 ln -sf libgtkada.so.25.0w libgtkada.so.25
 ln -sf libharfbuzz-gobject.so.0 libharfbuzz-gobject.so
 ln -sf libharfbuzz-subset.so.0 libharfbuzz-subset.so
 ln -sf libharfbuzz.so.0 libharfbuzz.so
 ln -sf libjpeg.so.8 libjpeg.so
 ln -sf libpango-1.0.so.0 libpango-1.0.so
 ln -sf libpangocairo-1.0.so.0 libpangocairo-1.0.so
 ln -sf libpangoft2-1.0.so.0 libpangoft2-1.0.so
 ln -sf libpixman-1.so.0 libpixman-1.so
 ln -sf libpng16.so.16 libpng16.so
 ln -sf libpng16.so libpng.so
 ln -sf librsvg-2.so.2 librsvg-2.so
 ln -sf libtextstyle.so.0 libtextstyle.so
 ln -sf libxml2.so.2 libxml2.so
 ln -sf libxmlada_dom.so.25.0w libxmlada_dom.so.25
 ln -sf libxmlada_input_sources.so.25.0w libxmlada_input_sources.so.25
 ln -sf libxmlada_sax.so.25.0w libxmlada_sax.so.25
 ln -sf libxmlada_schema.so.25.0w libxmlada_schema.so.25
 ln -sf libxmlada_unicode.so.25.0w libxmlada_unicode.so.25
 ln -sf libz.so.1 libz.so
 chmod +x libgcc_s* preloadable_libintl.so
)
(cd $PKG/opt/gnatstudio/share/gnatstudio/python/lib/python3.9/site-packages/libadalang/
 ln -sf /opt/gnatstudio/lib/gnatstudio/libadalang.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libadasat.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgcc_s.so.1
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnarl-25.20240411.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnat-25.20240411.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_core.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_core.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_gmp.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_gmp.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_iconv.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_iconv.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_projects.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgnatcoll_projects.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgpr.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libgpr2.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/liblangkit_support.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libprettier_ada.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libvss-gnat.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libvss-json.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libvss-regexp.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libvss.so
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_dom.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_dom.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_input_sources.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_input_sources.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_sax.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_sax.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_schema.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_schema.so.25.0w
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_unicode.so.25
 ln -sf /opt/gnatstudio/lib/gnatstudio/libxmlada_unicode.so.25.0w
)
(cd $PKG/opt/gnatstudio/share/doc/gnatstudio/html/tutorial
    rm -rf _static
    ln -sf /opt/gnatstudio/share/doc/gnatdoc/html/users_guide/_static
 cd $PKG/opt/gnatstudio/share/doc/gnatstudio/html/users_guide
    rm -rf _static
    ln -sf /opt/gnatstudio/share/doc/gnatdoc/html/users_guide/_static
)
# move some packages only in
# opt/gnatstudio/libexec/gnatstudio/gnathub/share/gnathub/python
# to opt/gnatstudio/share/gnatstudio/python, then replace it with a softlink
 python_libexec_path="$PKG/opt/gnatstudio/libexec/gnatstudio/gnathub/share/gnathub/python/"
 python_share_path="$PKG/opt/gnatstudio/share/gnatstudio/python"
 mv ${python_libexec_path}/bin/flask ${python_share_path}/bin
 mv ${python_libexec_path}/bin/pygmentize ${python_share_path}/bin
 
( cd ${python_libexec_path}/lib/python3.9/site-packages
  rm -rf _distutils_hack pip* pkg_resources setuptools* wheel* README.txt \
    distutils-precedence.pth
)
 mv ${python_libexec_path}/lib/python3.9/site-packages/* ${python_share_path}/lib/python3.9/site-packages/
 rm -rf ${python_libexec_path}

( cd $PKG/opt/gnatstudio/libexec/gnatstudio/gnathub/share/gnathub/
  ln -sf /opt/gnatstudio/share/gnatstudio/python
)

function symlink_duplicate_file() {
  file_prefix=$(echo $1 | rev | cut -d . -f 3- | rev)
  file0=${file_prefix}.pyc
  file1=${file_prefix}.opt-1.pyc
  file2=${file_prefix}.opt-2.pyc
  sum0=$(md5sum $file0 2> /dev/null | cut -d ' ' -f 1)
  sum1=$(md5sum $file1 2> /dev/null | cut -d ' ' -f 1)
  sum2=$(md5sum $file2 2> /dev/null | cut -d ' ' -f 1)
  if [ ! -z "$sum2" -a "$sum2" = "$sum1" ]; then
      ln -sf $file2 $file1
  fi
  if [ ! -z "$sum1" -a "$sum0" = "$sum1" ]; then
    ln -sf $file1 $file0
  fi
  if [ ! -z "$sum2" -a "$sum2" = "$sum0" ]; then
    ln -sf $file2 $file0
  fi
}

function remove_duplicate_pycache_files() {
  base_name=$(basename $1)
  if [ "$base_name" = "__pycache__" ] ; then
    (cd $1
     mapfile -t match_files < <(find -name "*.opt-1.pyc" -printf '%f\n')
     for each_file in "${match_files[@]}"; do
       symlink_duplicate_file $each_file
     done
     if [ "$1" = "$PKG/opt/gnatstudio/share/gnatstudio/python/lib/python3.9/test/__pycache__" ]; then
       if [ -f "test_tcl.cpython-39.opt-2.pyc" ]; then
	 symlink_duplicate_file "test_tcl.cpython-39.opt-2.pyc"
       elif [ -f "test_pprint.cpython-39.opt-2.pyc" ]; then
	 symlink_duplicate_file "test_pprint.cpython-39.opt-2.pyc"
       else
	echo "no opt-2.pyc found"
       fi
     fi
    )
  else
    mapfile -t subdirs < <(find $1 -maxdepth 1 -type d)
    for each_subdir in "${subdirs[@]}" ; do
      if [ "$each_subdir" != "$1" ]; then
	remove_duplicate_pycache_files $each_subdir
      fi
    done
  fi
}

( cd ${python_share_path}/bin
  ln -sf coverage-3.9 coverage3
  ln -sf coverage-3.9 coverage
  ln -sf python3 python


  # use system terminfo
  cd ${python_share_path}/lib/python3.9/lib-dynext/share
  rm -rf terminfo
  ln -sf /usr/share/terminfo
  
  remove_duplicate_pycache_files ${python_share_path}/lib/python3.9
)

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
mv COPYING3 README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/doinst.sh > $PKG/install/doinst.sh
cat $CWD/douninst.sh > $PKG/install/douninst.sh
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE