#!/bin/bash

# Copyright 2008, 2009, 2010, 2011, 2012, 2014, 2016, 2017, 2018, 2019  Patrick J. Volkerding, Sebeka, Minnesota, USA
# 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.

# Modified 2012 by Eric Hameleers <alien at slackware.com> for ARM port.

# Thanks to the folks at the Mozilla Foundation for permission to
# distribute this, and for all the great work!  :-)

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

PKGNAM=mozilla-thunderbird
VERSION=$(basename $(ls thunderbird-*.tar.?z | cut -d - -f 2 | rev | cut -f 3- -d . | rev) .source)
RELEASEVER=$(echo $VERSION | cut -f 1 -d e | cut -f 1 -d b)
BUILD=${BUILD:-1}

# Specify this variable for a localized build.
# For example, to build a version of Thunderbird with Italian support, run
# the build script like this:
#
# MOZLOCALIZE=it ./mozilla-thunderbird.SlackBuild
#
MOZLOCALIZE=${MOZLOCALIZE:-}

# Without LANG=C, building the Python environment may fail with:
# "UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 36: ordinal not in range(128)"
LANG=C

# Add a shell script to start the thunderbird binary with MOZ_ALLOW_DOWNGRADE=1
# to avoid backing up (and disabling) the user profile if a browser downgrade
# is detected. If you want to build with the stock default behavior, set
# this to something other than "YES":
MOZ_ALLOW_DOWNGRADE=${MOZ_ALLOW_DOWNGRADE:-YES}

# This can be set to YES or NO:
ENABLE_CALENDAR=${ENABLE_CALENDAR:-YES}
if [ "$ENABLE_CALENDAR" = "NO" ]; then
  ENABLE_CALENDAR="--disable-calendar"
else
  ENABLE_CALENDAR="--enable-calendar"
fi

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i686 ;;
    armv7hl) export ARCH=armv7hl ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
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
  if [ -z $MOZLOCALIZE ]; then
    echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  else
    echo "$PKGNAM-$VERSION-$ARCH-${BUILD}_$MOZLOCALIZE.txz"
  fi
  exit 0
fi

# Thunderbird has been requiring more and more memory, especially while linking
# libxul. If it fails to build natively on x86 32-bit, it can be useful to
# attempt the build using an x86_64 kernel and a 32-bit userspace. Detect this
# situation and set the ARCH to i686. Later in the script we'll add some
# options to the .mozconfig so that the compile will do the right thing.
if [ "$(uname -m)" = "x86_64" -a "$(file -L /usr/bin/gcc | grep 80386 | grep 32-bit)" != "" ]; then
  COMPILE_X86_UNDER_X86_64=true
  ARCH=i686
fi

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS=""
  LIBDIRSUFFIX=""
  OPTIMIZE=${OPTIMIZE:-"-Os"}
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS=""
  LIBDIRSUFFIX=""
  OPTIMIZE=${OPTIMIZE:-"-Os"}
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-fPIC"
  LIBDIRSUFFIX="64"
  OPTIMIZE=${OPTIMIZE:-"-O2"}
elif [ "$ARCH" = "arm" ]; then
  SLKCFLAGS="-march=armv4 -mtune=xscale"
  LIBDIRSUFFIX=""
  OPTIMIZE=${OPTIMIZE:-"-O2"}
else
  SLKCFLAGS=""
  LIBDIRSUFFIX=""
  OPTIMIZE=${OPTIMIZE:-"-O2"}
fi

# Choose a compiler (gcc/g++ or clang/clang++):
export CC=${CC:-gcc}
export CXX=${CXX:-g++}

## Link using gold.  This avoids running out of memory on 32-bit systems, and
## avoids a recurring build failure with GNU ld on other systems.
#PATH="$(pwd)/gold:$PATH"
#export CC="$CC -B$(pwd)/gold"
#export CXX="$CXX -B$(pwd)/gold"

# Keep memory usage as low as possible when linking:
SLKLDFLAGS=" -Wl,--as-needed -Wl,--no-keep-memory -Wl,--stats"
export LDFLAGS="$SLKLDFLAGS"
export MOZ_LINK_FLAGS="$SLKLDFLAGS"

# If you don't give this _something_ then it defaults to -g, causing more
# link time memory issues:
export MOZ_DEBUG_FLAGS="-g0"

# Put Rust objects on a diet to keep the linker from running into memory
# issues (especially on 32-bit):
export RUSTFLAGS="-Cdebuginfo=0 -Copt-level=0"

TMP=${TMP:-/tmp}
PKG=$TMP/package-mozilla-thunderbird

# If there is a private Google API key available at compile time, use
# it to enable support for Google Safe Browsing. For Slackware builds,
# we use a private key issued for the Slackware project. If you are
# rebuilding and need this support, or you are producing your own
# distribution, you may obtain your own Google API key at no charge by
# following these instructions:
# https://bugzilla.mozilla.org/show_bug.cgi?id=1377987#c0
if [ -r /root/google-api-key ]; then
  GOOGLE_API_KEY="--with-google-safebrowsing-api-keyfile=/root/google-api-key"
fi

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

rm -rf $PKG
mkdir -p $TMP $PKG/usr/lib${LIBDIRSUFFIX}

# Build or unpack build-time dependencies:
. ./build-deps.sh

cd $TMP
rm -rf thunderbird-$RELEASEVER
# Unpack this in a subdirectory to prevent changing permissions on /tmp:
rm -rf thunderbird-unpack
mkdir thunderbird-unpack
cd thunderbird-unpack
tar xvf $CWD/thunderbird-$VERSION.source.tar.?z || exit 1
mv * ..
cd ..
rm -rf thunderbird-unpack
cd thunderbird-$RELEASEVER || exit 1

# Delete object directory if it was mistakenly included in the tarball:
rm -rf obj-x86_64-pc-linux-gnu

# Retain GTK+ v2 scrolling behavior:
zcat $CWD/tb.ui.scrollToClick.diff.gz | patch -p1 --verbose || exit 1

# Fix building with latest Rust:
zcat $CWD/unbreakdocs.diff.gz | patch -p1 --verbose || exit 1

# Bypass a test that fails the build:
zcat $CWD/gkrust.a.no.networking.check.diff.gz | patch -p1 --verbose || exit 1

# Fetch localization, if requested:
if [ ! -z $MOZLOCALIZE ]; then
  LOC_TAG="THUNDERBIRD_$( echo $VERSION | tr \. _ )_RELEASE"
  rm -f $LOC_TAG.tar.bz2
  wget https://hg.mozilla.org/releases/l10n/mozilla-release/$MOZLOCALIZE/archive/$LOC_TAG.tar.bz2
  tar xvf $LOC_TAG.tar.bz2
  mv $MOZLOCALIZE-$LOC_TAG $MOZLOCALIZE
fi

# Arch-dependent patches:
case "$ARCH" in
    armv7hl) ARCH_CONFIG="--with-arch=armv7-a --with-float-abi=hard --with-fpu=vfpv3-d16 --disable-elf-hack"
             # Make Thunderbird compile on ARM platforms lacking neon support:
             zcat $CWD/mozilla-firefox.xpcom_arm.patch.gz | patch -p1 --verbose || exit 1
             ;;
    *)       ARCH_CONFIG=" "
             ;;
esac

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 {} \+

# Our building options, in a configure-like display ;)
OPTIONS="\
  --enable-official-branding \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --with-system-zlib \
  --enable-alsa \
  --enable-application=comm/mail \
  $ENABLE_CALENDAR \
  --enable-default-toolkit=cairo-gtk3 \
  --enable-startup-notification \
  --enable-ldap \
  --enable-strip \
  --enable-cpp-rtti \
  --enable-accessibility \
  $GOOGLE_API_KEY \
  --disable-crashreporter \
  --disable-debug \
  --disable-tests \
  --disable-updater \
  --host=$ARCH-slackware-linux \
  --target=$ARCH-slackware-linux"
  # Complains about missing APNG support in Slackware's libpng:
  #--with-system-png \
  # Broken with 12.0:
  #--enable-system-cairo \
if [ ! -z $MOZLOCALIZE ]; then
  OPTIONS=$OPTIONS" \
  --enable-ui-locale=$MOZLOCALIZE
  --with-l10n-base=.."
  # There are no dictionaries in localized builds
  sed -i \
    -e "/@BINPATH@\/dictionaries\/\*/d" \
    -e "/@RESPATH@\/dictionaries\/\*/d" \
    mail/installer/package-manifest.in || exit 1
fi

export BUILD_OFFICIAL=1
export MOZILLA_OFFICIAL=1
export MOZ_PHOENIX=1
export CFLAGS="$SLKCFLAGS"
export CXXFLAGS="$SLKCFLAGS"
export MOZ_MAKE_FLAGS="$NUMJOBS"

# Clear some variables that could break the build
unset DBUS_SESSION_BUS_ADDRESS ORBIT_SOCKETDIR SESSION_MANAGER \
  XDG_SESSION_COOKIE XAUTHORITY MAKEFLAGS

# Assemble our .mozconfig:
echo > .mozconfig

# Tell .mozconfig about the selected compiler:
echo "export CC=\"${CC}\"" >> .mozconfig
echo "export CXX=\"${CXX}\"" >> .mozconfig

# Mozilla devs enforce using an objdir for building
# https://developer.mozilla.org/en/Configuring_Build_Options#Building_with_an_objdir
mkdir obj
echo "mk_add_options MOZ_OBJDIR=$(pwd)/obj" >> .mozconfig
# This directory is also needed or the build will fail:
mkdir -p mozilla/obj

# Set options for $OPTIMIZE:
echo "ac_add_options --enable-optimize=\"${OPTIMIZE}\"" >> .mozconfig

if [ "$COMPILE_X86_UNDER_X86_64" = "true" ]; then
  # Compile for i686 under an x86_64 kernel:
  echo "ac_add_options --host=i686-pc-linux-gnu" >> .mozconfig
  echo "ac_add_options --target=i686-pc-linux-gnu" >> .mozconfig
fi

# Add the $OPTIONS above to .mozconfig:
for option in $OPTIONS; do echo "ac_add_options $option" >> .mozconfig; done

# Disable tests on standard build:
echo "ac_add_options --disable-tests" >> .mozconfig
./mach build || exit 1
./mach buildsymbols || exit 1
DESTDIR=$PKG ./mach install || exit 1

# Clean up the build time dependencies:
rm -rf $TMP/mozilla-thunderbird-build-deps

# We don't need these (just symlinks anyway):
rm -rf $PKG/usr/lib${LIBDIRSUFFIX}/thunderbird-devel-$RELEASEVER

# Nor these:
rm -rf $PKG/usr/include

# Thunderbird 3.x cruft?
# If we still need something like this (and you know what we need :), let me know.
#( cd $PKG/usr/lib${LIBDIRSUFFIX}/thunderbird-$VERSION
#  cp -a defaults/profile/mimeTypes.rdf defaults/profile/mimeTypes.rdf.orig
#  zcat $CWD/mimeTypes.rdf > defaults/profile/mimeTypes.rdf || exit 1
#) || exit 1

mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/mozilla/plugins
mkdir -p $PKG/usr/share/applications
cat $CWD/mozilla-thunderbird.desktop > $PKG/usr/share/applications/mozilla-thunderbird.desktop
mkdir -p $PKG/usr/share/pixmaps
# Symlinked below.
#cat $CWD/thunderbird.png > $PKG/usr/share/pixmaps/thunderbird.png

# These files/directories are usually created if Thunderbird is run as root,
# which on many systems might (and possibly should) be never.  Therefore, if we
# don't see them we'll put stubs in place to prevent startup errors.
( cd $PKG/usr/lib${LIBDIRSUFFIX}/thunderbird-$RELEASEVER
  if [ -d extensions/talkback\@mozilla.org ]; then
    if [ ! -r extensions/talkback\@mozilla.org/chrome.manifest ]; then
      echo > extensions/talkback\@mozilla.org/chrome.manifest
    fi
  fi
  if [ ! -d updates ]; then
    mkdir -p updates/0
  fi
)

# Need some default icons in the right place:
for i in 16 22 24 32 48 256; do
  install -m 0644 -D comm/mail/branding/thunderbird/default${i}.png \
    $PKG/usr/share/icons/hicolor/${i}x${i}/apps/thunderbird.png
done
mkdir -p $PKG/usr/share/pixmaps
( cd $PKG/usr/share/pixmaps ; ln -sf /usr/share/icons/hicolor/256x256/apps/thunderbird.png . )
mkdir -p $PKG/usr/lib$LIBDIRSUFFIX/thunderbird-$RELEASEVER/chrome/icons/default
install -m 644 other-licenses/branding/thunderbird/mailicon16.png \
  $PKG/usr/lib$LIBDIRSUFFIX/thunderbird-$RELEASEVER/icons/
install -m 644 other-licenses/branding/thunderbird/mailicon16.png \
  $PKG/usr/lib$LIBDIRSUFFIX/thunderbird-$RELEASEVER/chrome/icons/default/

# Copy over the LICENSE
install -p -c -m 644 LICENSE $PKG/usr/lib${LIBDIRSUFFIX}/thunderbird-$RELEASEVER/

# If MOZ_ALLOW_DOWNGRADE=YES, replace the /usr/bin/thunderbird symlink with a
# shell script that sets the MOZ_ALLOW_DOWNGRADE=1 environment variable so
# that a detected downgrade does not reset the user profile:
if [ "$MOZ_ALLOW_DOWNGRADE" = "YES" ]; then
  rm -f $PKG/usr/bin/thunderbird
  cat << EOF > $PKG/usr/bin/thunderbird
#!/bin/sh
#
# Shell script to start Mozilla Thunderbird.
#
# Don't reset the user profile on a detected downgrade:
export MOZ_ALLOW_DOWNGRADE=1

# Start Thunderbird:
exec /usr/lib${LIBDIRSUFFIX}/thunderbird/thunderbird "\$@"
EOF
  chown root:root $PKG/usr/bin/thunderbird
  chmod 755 $PKG/usr/bin/thunderbird
fi

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

cd $PKG
if [ -z $MOZLOCALIZE ]; then
  /sbin/makepkg -l y -c n $TMP/mozilla-thunderbird-$VERSION-$ARCH-$BUILD.txz
else
  /sbin/makepkg -l y -c n $TMP/mozilla-thunderbird-$VERSION-$ARCH-${BUILD}_$MOZLOCALIZE.txz
fi