#!/bin/bash

# Copyright 2022  Patrick J. Volkerding, Sebeka, Minnesota, USA
# All rights reserved.
#
# Thanks to Audrius Kažukauskas, Ryan P.C. McQuen, and Willy Sudiarto Raharjo
# for the slackbuilds.org version of this script.
#
# 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 2 of the License, or
# (at your option) any later version, with the following exception:
# the text of the GPL license may be omitted.
#
# You may have received a copy of the GNU General Public License
# along with this program (most likely, a file named COPYING). If
# not, see <https://www.gnu.org/licenses/>.


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

PKGNAM=nodejs
SRCNAM=node
VERSION=${VERSION:-$(echo $SRCNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev | tr -d v)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) readelf /usr/bin/file -A | grep -E -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j $(expr $(nproc) + 1) "}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "armv7hl" ]; then
  SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
  LIBDIRSUFFIX=""
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

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

cd $TMP
rm -rf $SRCNAM-v${VERSION}
tar xvf $CWD/$SRCNAM-v${VERSION}.tar.?z || exit 1
cd $SRCNAM-v${VERSION} || exit 1

chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \+ -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \+

## Fix libdir for 64-bit:
sed -i "s|lib/|lib${LIBDIRSUFFIX}/|g" tools/install.py
sed -i "s|'lib'|'lib${LIBDIRSUFFIX}'|g" lib/module.js
sed -i "s|'lib'|'lib${LIBDIRSUFFIX}'|g" deps/npm/lib/npm.js

# Not sure if this one is really needed.
#sed -i "s|math.h|cmath|" src/node_crypto.cc

./configure \
  --prefix=/usr \
  --with-intl=system-icu \
  --shared-openssl \
  --shared-zlib \
  --shared-libuv \
  --experimental-http-parser \
  --shared-nghttp2 \
  --shared-cares \
  --shared-brotli || exit 1
# --shared-v8
# --shared-http-parser

export CFLAGS="$SLKCFLAGS"
export CXXFLAGS="$SLKCFLAGS"
make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

# Strip binaries:
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Relocate manual pages:
if [ -d $PKG/usr/share/man ]; then
  mv $PKG/usr/share/man $PKG/usr
fi

# Compress manual pages:
find $PKG/usr/man -type f -exec gzip -9 {} \+
for i in $( find $PKG/usr/man -type l ) ; do
  ln -s $( readlink $i ).gz $i.gz
  rm $i
done

# Remove unneeded files:
find $PKG/usr \( -name '.git*' \) -exec rm -f {} \;

# Set NODE_PATH to look for globally installed modules:
mkdir -p $PKG/etc/profile.d
cat > $PKG/etc/profile.d/${PKGNAM}.csh << EOF
#!/bin/csh
setenv NODE_PATH /usr/lib${LIBDIRSUFFIX}/node_modules
EOF
cat > $PKG/etc/profile.d/${PKGNAM}.sh << EOF
#!/bin/sh
export NODE_PATH=/usr/lib${LIBDIRSUFFIX}/node_modules
EOF
chmod 0755 $PKG/etc/profile.d/*

# Symlink bash-completion if needed:
mkdir -p $PKG/usr/share/bash-completion/completions
if [ ! -r $PKG/usr/share/bash-completion/completions/npm -a -r $PKG/usr/lib${LIBDIRSUFFIX}/node_modules/npm/lib/utils/completion.sh ]; then
  ( cd $PKG/usr/share/bash-completion/completions/npm ; ln -sf ../../../lib${LIBDIRSUFFIX}/node_modules/npm/lib/utils/completion.sh npm )
fi

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  AUTHORS* BUILDING* CHANGELOG* CODE_OF_CONDUCT* CONTRIBUTING* GOVERNANCE* LICENSE* README* SECURITY* \
  $PKG/usr/doc/${PKGNAM}-$VERSION

# If there's a CHANGELOG, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r CHANGELOG ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat CHANGELOG | head -n 1000 > $DOCSDIR/CHANGELOG
  touch -r CHANGELOG $DOCSDIR/CHANGELOG
fi

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz