#!/bin/bash

# this gem of a hack gathers all files required by the client for the platform
# by deep magic, it works on osx, linux and windows. on MY osx, linux
# and windows, that is.

STRIP="strip"
LIBEXT=so
LIB0=so.?
SO=so
SYSLIB=/usr/lib
MAKE=make
ARCHNAME=x86
GENPACK_ENVVARS="LD_LIBRARY_PATH=."

umask 022

if [ "$(uname -s)" = CYGWIN_NT-5.0 ]; then
   . ~/.setenv

   OS=windows
   URLADER=windows-x86
   unset PANGO
   PERL=/c/perl/bin/perl
   MAKE=nmake
   SYSLIB=/c/gtk/bin
   LIBEXT=dll
   LIB0=dll
   SO=dll
   STRIP=":" # stripping the perl library kills it, and apparently, everythignis always stripped

   # fontconfig apparently ignores env vars and always looks at ./etc/fonts/fonts.conf,
   # but only if . isn't actually called bin or lib. hope for the best.
   GENPACK_ENVVARS="FONTCONFIG_PATH=pm/Deliantra/Client/private/resources/fonts FONTCONFIG_FILE=fonts.conf"

   pango-querymodules() {
      /c/gtk/bin/pango-querymodules # empty output usually
   }

elif [ "$(uname -s)" = Darwin ]; then
   OS=darwin
   URLADER=darwin-x86
   PANGO=1.6.0
   PERL=/opt/local/bin/perl
   GENPACK_ENVVARS="DYLD_LIBRARY_PATH=."

   SYSLIB=/opt/local/lib
   LIB0=dylib
   SO=bundle
   STRIP="strip -x"
elif [ $(arch) = i686 ]; then
   OS=linux
   URLADER=linux-x86
   PANGO=1.5.0
   PERL=/usr/bin/perl
else
   OS=linux
   URLADER=linux-amd64
   PANGO=1.5.0
   PERL=/usr/bin/perl
   ARCHNAME=amd64
fi

export DIST="$(pwd)/dist/$OS-$ARCHNAME"

eval $($PERL -V:sitebinexp:)

"$sitebinexp"/perl-libextractor --exedir . --dlldir . --bindir pm/bin --libdir pm \
   --perl --core-support --script deliantra \
   --runtime-only --strip \
   --copy "$DIST"

cat <<EOF >"$DIST"/pango.rc
[Pango]
ModuleFiles = pango.modules
EOF

(
   exec 5>"$DIST"/pango.modules
   pango-querymodules | grep ^/ | while read lib rest; do
      base=$(basename "$lib")
      [ "$base" = pango-basic-x.$LIBEXT ] && continue
      cp -p "$lib" "$DIST"/.
      echo "./$base $rest" >&5 # using ./ seems to help pango not to rummage around in /usr/lib etc.
   done
)

#############################################################################

IFS=" 	

" # space tab nl cr - cr for windows
eval $($PERL -V:sitebinexp -V:sitearchexp -V:sitelib -V:vendorarchexp -V:vendorlibexp -V:archlibexp -V:privlibexp)

mkdir -p "$DIST"/pm/bin
cp "$sitebinexp"/deliantra "$DIST"/pm/bin/
cp -p util/run "$DIST"

#############################################################################

if [ "$OS" = windows ]; then
   libdeps() {
      objdump -p "$1" | awk '/\tDLL Name:/ { print $3 }' | while read lib; do
         set -- $(type "$lib")
         case "$3" in
            /c/WINNT/* | /c/sdk/* )
               ;;
            * )
               echo "$3"
               ;;
         esac
      done
   }
elif [ "$OS" = darwin ]; then
   libdeps() {
      otool -L "$1" | perl -ne 'print "$1\n" if m%^\s+(/opt\S+)%'
   }
else
   libdeps() {
      ldd "$1" | perl -ne 'print "$1\n" if / => (\S+)/'
   }
fi

add_deps() {
   local so="$1"
   libdeps "$so" | while read path; do
      base="$(basename "$path")"
      if ! [ -e "$base" ]; then
         cp -p "$path" .
         chmod 755 "$base"
         add_deps "$base"
      fi
   done
}

(
   cd "$DIST"

   if [ "$OS" = windows ]; then
      cp -p $SYSLIB/libvorbisfile-3.dll $SYSLIB/mikmod.dll $SYSLIB/libpng12-0.dll .
      cp /root/src/CFPlus/util/splash.bmp .
      chmod -R u+rwX pm/auto

      # convert perl to a non-console-app
      $PERL -MWin32::Exe -e '$e = new Win32::Exe"perl.exe"; $e->set_subsystem_windows; $e->write'

   else
      for lib in mikmod vorbisfile; do
         cp -p $SYSLIB/lib$lib.$LIB0 .
         chmod 755 lib$lib.$LIB0
      done
   fi

   for so in $(find . -name "*.$SO" -o -name "*.$LIBEXT" -o -name "*.$LIB0") perl; do
      add_deps "$so"
   done

   rm -f pm/auto/POSIX/*.al

   for lib in \
      dl c m rt pthread nsl crypt \
      X11 Xext Xau Xdmcp ICE SM Xrandr Xrender Xxf86vm drm GL \
      z
   do
      rm -f lib"$lib".$LIB0
   done

   if [ "$OS" != windows ]; then
      # patch braindamaged pango

      if [ "$OS" != darwin ]; then
         set libpango-1.0.$LIB0
         perl -pe 's{/u(?=sr/lib(32)?/pango)}{.\x00}g;' <"$1" >"$1~" && mv "$1~" "$1"
      else
         set lib*pango-1.0.0.dylib
         perl -pe 's{/o(?=pt/local/.../pango)}{.\x00}g;' <"$1" >"$1~" && mv "$1~" "$1"
      fi
      chmod 755 "$1"
   fi

   if [ "$OS" = darwin ]; then
      # "dll hell" is most severe on os x, because apple
      # does not generally give a shit for backwards compatibility,
      # alwayss ships outdated libraries and often provides libraries
      # of the same name as well-known libs (such as libjpeg), that
      # of course do something completely different
      patchlibs() {
         <"$1" \
         perl -0777 -pe '
            s%('"/opt/local/lib[^\x00]*/lib"'([^\x00/]+)\.dylib\x00)%
               my $s = $1;
               my $r = "libdeliantra-$2.dylib\x00";
               (length $r) <= (length $s)
                  or die "lib replacement <$r> larger than <$s>\n";
               substr $s, 0, length $r, $r;
               $s
            %ge
         ' \
         >"$1~" && mv "$1~" "$1" || exit 67
      }

      # patch bundles and pango modules with external dependencies,
      # should be few, so hardcode(tm)
      for so in \
         pm/auto/BDB/BDB.bundle \
         pm/auto/Deliantra/Client/Client.bundle \
         *.$LIBEXT
      do
         patchlibs "$so"
      done

      # now patch and rename all .dylibs
      for lib in *.$LIB0; do
         stem="${lib#lib}"
         stem="${stem%.$LIB0}"
         patchlibs "$lib"
         mv "$lib" "libdeliantra-$stem.dylib"
      done
   fi

   [ "$OS" = linux ] && chrpath -d perl $(find pm -name "*.so") # debian perls have an rpath, many modules too
   $STRIP $(find . -name "*.$SO" -o -name "*.$LIBEXT" -o -name "*.$LIB0") perl

   : >timidity.cfg
)

cat >"$DIST".vars <<EOF
G_URLADER="$URLADER"
G_OS="$OS"
G_ARCHNAME="$ARCHNAME"
G_ENVVARS="$GENPACK_ENVVARS"
G_COMMAND="./perl run"
EOF