#!/bin/bash

# Upstream modifies version_display.txt using script included in GitHub Actions (version=git_tag),
# without patching. Debhelper won't allow us to do that by same way and
# patching won't be much convenient, so we need to create new files.
mkdir -p "$(pwd)"/debian/app_version

cp "$(pwd)"/browser/config/version.txt "$(pwd)"/debian/app_version/version.txt
echo "$WF_VERSION" >"$(pwd)"/debian/app_version/version_display.txt

# Tune flags
OPT_EXTRA_FLAGS="-march=x86-64 -mtune=k8"
CFLAGS+=" $OPT_EXTRA_FLAGS"
CXXFLAGS+=" $OPT_EXTRA_FLAGS"

# LTO needs more open files
ulimit -n 4096
# Do 3-tier PGO
LDFLAGS+=" -Wl,--no-keep-memory -Wl,--no-mmap-output-file"
export LDFLAGS
if test `lsb_release -sc` = "bionic" || test `lsb_release -sc` = "focal" || test `lsb_release -sc` = "buster"; then
export NODEJS=/usr/lib/nodejs-mozilla/bin/node
fi

if test `lsb_release -sc` = "bionic"; then
export NASM=/usr/lib/nasm-mozilla/bin/nasm
fi

# For successfull LTO build, we need to use matching LLVM version
if test `lsb_release -sc` = "bionic" || test `lsb_release -sc` = "buster" || test `lsb_release -sc` = "bullseye" || test `lsb_release -sc` = "jammy" || test `lsb_release -sc` = "focal"; then
export PATH=/usr/lib/llvm-15/bin/:$PATH
fi

export CC=clang
export CXX=clang++
export AR=llvm-ar
export NM=llvm-nm
export RANLIB=llvm-ranlib
export LLVM_PROFDATA=llvm-profdata
export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=system
export GEN_PGO=1
./mach build

echo "Profiling instrumented browser..."
./mach package
JARLOG_FILE="$(pwd)/jarlog" xvfb-run -s "-screen 0 1920x1080x24 -nolisten local" ./mach python build/pgo/profileserver.py

stat -c "Profile data found (%s bytes)" merged.profdata
test -s merged.profdata

stat -c "Jar log found (%s bytes)" jarlog
test -s jarlog

echo "Removing instrumented browser..."
./mach clobber

echo "Building optimized browser..."
unset GEN_PGO
export USE_PGO=1
./mach build

# Build langpacks
mkdir -p "$(pwd)"/extensions
# langpack-build can not be done in parallel easily (see https://bugzilla.mozilla.org/show_bug.cgi?id=1660943)
# Therefore, we have to have a separate obj-dir for each language
# We do this, by creating a mozconfig-template with the necessary switches
# and a placeholder obj-dir, which gets copied and modified for each language
sed -r '/^(ja-JP-mac|en-US|)$/d;s/ .*$//' debian/locales.shipped | cut -f1 -d":" |
    xargs -n 1 -P $JOBS -I {} /bin/sh -c '
        locale=$1
        cp debian/mozconfig_LANG ${PWD}/mozconfig_$locale
        sed -i "s|obj_LANG|obj_$locale|" ${PWD}/mozconfig_$locale
        export MOZCONFIG=${PWD}/mozconfig_$locale
        ./mach build config/nsinstall langpack-$locale
        cp -L ../obj_$locale/dist/linux-*/xpi/waterfox-g-$WF_VERSION.$locale.langpack.xpi \
            "$(pwd)"/extensions/langpack-$locale@l10n.waterfox.net.xpi
' -- {}