#!/bin/sh -e

pkg_dir=$1

set -- \
    blink_symbol_level=0 \
    clang_use_chrome_plugins=false \
    closure_compile=false \
    custom_toolchain=\"//build/toolchain/linux/unbundle:default\" \
    enable_mds=false \
    enable_nacl=false \
    enable_nacl_nonsfi=false \
    enable_reading_list=false \
    enable_remoting=false \
    enable_reporting=false \
    enable_service_discovery=false \
    enable_swiftshader=false \
    fatal_linker_warnings=false \
    host_toolchain=\"//build/toolchain/linux/unbundle:default\" \
    is_component_build=true \
    is_clang=false \
    is_debug=false \
    linux_use_bundled_binutils=false \
    rtc_use_x11=true \
    safe_browsing_mode=0 \
    symbol_level=0 \
    treat_warnings_as_errors=false \
    use_allocator=\"none\" \
    use_allocator_shim=false \
    use_atk=false \
    use_cups=false \
    use_custom_libcxx=false \
    use_dbus=false \
    use_gio=false \
    use_gnome_keyring=false \
    use_gold=false \
    use_jumbo_build=true \
    jumbo_file_merge_limit=20 \
    use_kerberos=false \
    use_lld=false \
    icu_use_data_file=false \
    use_pulseaudio=false \
    use_sysroot=false \
    use_system_harfbuzz=true \
    use_official_google_api_keys=false \
    use_unofficial_version_number=false \
    fieldtrial_testing_like_official_build=false
    # Clang is needed for this as well as additional patches/workarounds.
    # is_official_build=true

for patch in *.patch; do
    patch -p1 < "$patch"
done

# Fix 'python2' shebangs.
find . -type f -name \*.py -exec sed -i '1s|python$|&2|' {} \;

# Use 'gcc' instead of 'clang'.
export CC=gcc CXX=g++ LD=g++ AR=ar NM=nm
export PATH=$PWD/fix-python-bin:$PATH

# Make a temporary script to cause 'python' to resolve to python 2 and not 3.
mkdir -p fix-python-bin
cat << EOF > ./fix-python-bin/python
#!/bin/sh
exec python2 "\$@"
EOF
chmod +x ./fix-python-bin/python

# Use system nodejs.
mkdir -p third_party/node/linux/node-linux-x64/bin
ln -s /usr/bin/node third_party/node/linux/node-linux-x64/bin/

# Use system libraries.
for dep in ffmpeg fontconfig harfbuzz-ng libdrm libevent libjpeg \
           libpng libwebp libxml libxslt opus re2 snappy yasm; do
    find . -type f -path "*third_party/$dep/*" \
        \! -path "*third_party/$dep/chromium/*" \
        \! -path "*third_party/$dep/google/*" \
        \! -path './base/third_party/icu/*' \
        \! -path './third_party/pdfium/third_party/freetype/include/pstables.h' \
        \! -path './third_party/yasm/run_yasm.py' \
        \! -regex '.*\.\(gn\|gni\|isolate\|py\)' \
        -delete
done

# Switch to system provided dependencies.
python2 build/linux/unbundle/replace_gn_files.py \
    --system-libraries ffmpeg fontconfig harfbuzz-ng libdrm libevent libjpeg libpng libwebp libxml libxslt opus re2 snappy yasm

python2 tools/gn/bootstrap/bootstrap.py -s -v --gn-gen-args "$*"

# All shells seem to support this despite the lack of a POSIX spec for it.
# shellcheck disable=2039
ulimit -n 2048 ||:

out/Release/gn gen out/Release \
    --script-executable=/usr/bin/python2

ninja -C out/Release chrome chromedriver

cd out/Release

for bin in chrome chromedriver *.bin; do
    install -Dm755 "$bin" "$pkg_dir/usr/lib/chromium/$bin"
done

mkdir -p "$pkg_dir/usr/bin"
ln -s /usr/lib/chromium/chrome       "$pkg_dir/usr/bin/chrome"
ln -s /usr/lib/chromium/chromedriver "$pkg_dir/usr/bin/chromedriver"