# Maintainer (arch): Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Contributor: Ionut Biru <ibiru@archlinux.org>
# Contributor: Jakub Schmidtke <sjakub@gmail.com>
# Contributor: Figue <ffigue at gmail>
# Contributor: fauno <fauno@kiwwwi.com.ar>
# Contributor: evr <evanroman at gmail>
# Contributor: Muhammad 'MJ' Jassim <UnbreakableMJ@gmail.com>
# Contributor: vando <facundo@esdebian.org>
# Contributor: André Silva <emulatorman@hyperbola.info>
# Contributor: Henry Jensen <hjensen@connochaetos.org>
# Contributor: Luke Shumaker <lukeshu@parabola.nu>
# Contributor: Márcio Silva <coadde@hyperbola.info>
# Maintainer: Andreas Grapentin <andreas@grapentin.org>
# Contributor: bill-auger <bill-auger@programmer.net>
# Contributor: grizzlyuser <grizzlyuser@protonmail.com>


# NOTE: icecat (60.7 < V <= current) are not complete upstream releases
#       upstream releases normally have $_upstream_ver ending in '-gnu<N>'
#       this build is based on gnuzilla VCS developement sources
#         rev: 65a61287a5142a9403ec00d973cb5e5d658a3c71
#       with parabola patches applied
#         https://git.parabola.nu/~bill-auger/icecat.git/log/?h=parabola


pkgname=icecat
_upstream_ver=91.11.0-gnu1
_upstream_ver=${_upstream_ver/-gnu1/-pre1} # parabola pre-release
pkgver=${_upstream_ver//-/_}
pkgrel=1
pkgdesc="the GNU web browser, based on Mozilla Firefox ESR"
arch=(armv7h i686 x86_64)
license=(MPL GPL LGPL)
url=http://www.gnu.org/software/gnuzilla/
depends=(gtk3 libxt mime-types dbus-glib ffmpeg nss ttf-font libpulse)
makedepends=(unzip zip diffutils yasm mesa imake inetutils xorg-server-xvfb
             autoconf2.13 rust clang llvm jack nodejs cbindgen nasm
             python-setuptools python-psutil python-zstandard lld dump_syms)
makedepends+=(jq python-jsonschema)
makedepends_i686=(gcc10)
optdepends=('networkmanager: Location detection via available WiFi networks'
            'libnotify: Notification integration'
            'pulseaudio: Audio support'
            'speech-dispatcher: Text-to-Speech'
            'hunspell-en_US: Spell checking, American English'
            'xdg-desktop-portal: Screensharing with Wayland')
options=(!emptydirs !makeflags !strip !lto !debug)
source=(https://repo.parabola.nu/other/${pkgname}/${pkgname}-${_upstream_ver}.tar.bz2{,.sig}
        icecat.desktop icecat-safe.desktop
        0001-Use-remoting-name-for-GDK-application-names.patch
)
source_armv7h=(arm.patch
               build-arm-libopus.patch)
source_i686=(avoid-libxul-OOM-python-check.patch
             rust-static-disable-network-test-on-static-libraries.patch)
sha256sums=('f2a149d562b0b441f4df1e395d00a36717f56001acf7f05d40ebab0088069661'
            'SKIP'
            'e00dbf01803cdd36fd9e1c0c018c19bb6f97e43016ea87062e6134bdc172bc7d'
            '33dd309eeb99ec730c97ba844bf6ce6c7840f7d27da19c82389cdefee8c20208'
            'a7f5ae9f018678a391739365329a5a5b527b536bc9aac441c73ae811d2fa530d'
)
sha256sums_armv7h=('bc00516032330760444939c516a60c78f868631e1b37f075f0fe71a53737b966'
                   '2d4d91f7e35d0860225084e37ec320ca6cae669f6c9c8fe7735cdbd542e3a7c9')
sha256sums_i686=('2f0c81a38c4578f68f5456b618fe84a78974072821488173eb55e0e72287e353'
                 '10c5276eab2e87f400a6ec15d7ffbef3b0407ee888dea36f1128927ca55b9041')
validpgpkeys+=('3954A7AB837D0EA9CFA9798925DB7D9B5A8D4B40') # bill-auger (VCS builds)


# disable PGO for 32-bit arches
_should_skip_pgo=0 # for x86_64
[[ "${CARCH}" != 'armv7h' && "${CARCH}" != 'i686' ]] || _should_skip_pgo=1


_check_build_config() {
  pushd "${srcdir}"/${pkgname}-${pkgver%_*} > /dev/null

  echo "Checking build configuration..."

  # Configure produces mozinfo.json that reflects current configuration.
  # See build/docs/mozinfo.rst
  ./mach configure

  # In this test, jq collects values of the following keys of mozinfo.json into array,
  # and checks if any of them are not equal to false, in which case it returns "true".
  # E.g. if the value of any key is true or null (in case the key is missing from mozinfo.json),
  # that means the build configuration has to be reworked.
  local obj_directory=$(./mach environment | sed -En '/object directory:/{n;s/^\s+//;p;}')
  local antifeature_keys=(.crashreporter .datareporting .healthreport .normandy .telemetry .updater)
  local antifeatures=()

  echo "obj_directory is: ${obj_directory}"
  for key in ${antifeature_keys[@]}
  do  jq -e "${key} != false" "${obj_directory}/mozinfo.json" &> /dev/null && antifeatures+=(${key})
  done
  if   (( ${#antifeatures[@]} ))
  then echo "Some anti-features are not disabled in build configuration files, aborting:"
       for key in ${antifeatures[@]} ; do echo " - ${key} is enabled" ; done ;

       [[ -z "${ar[*]/.datareporting/}" ]] && return 0 # FIXME: .datareporting is detected

       return 1
  fi

  popd > /dev/null
}

prepare() {
  mkdir -p mozbuild
  cd "$srcdir/$pkgname-${pkgver%_*}"

  # https://bugzilla.mozilla.org/show_bug.cgi?id=1530052
  patch -Np1 -i ../0001-Use-remoting-name-for-GDK-application-names.patch

#  # https://bugzilla.mozilla.org/show_bug.cgi?id=1667736
#  patch -Np1 -i ../rust_1.48.patch

  cat >../mozconfig <<END
ac_add_options --enable-application=browser
mk_add_options MOZ_OBJDIR=${PWD@Q}/obj

ac_add_options --prefix=/usr
ac_add_options --enable-release
ac_add_options --enable-hardening
ac_add_options --enable-optimize
ac_add_options --enable-rust-simd
ac_add_options --enable-linker=lld
ac_add_options --disable-elf-hack
ac_add_options --disable-bootstrap

# Branding
ac_add_options --enable-official-branding
ac_add_options --enable-update-channel=release
ac_add_options --with-distribution-id=nu.parabola
ac_add_options --with-app-name=${pkgname}
ac_add_options --with-app-basename=${pkgname}
ac_add_options --with-unsigned-addon-scopes=app,system
ac_add_options --allow-addon-sideload
export MOZ_APP_NAME=$pkgname # TODO: probably do not need this (per --with-app-name=)
export MOZ_APP_REMOTINGNAME=${pkgname}
export MOZ_TELEMETRY_REPORTING=
export MOZ_REQUIRE_SIGNING=

# System libraries
ac_add_options --with-system-nspr
ac_add_options --with-system-nss

# Features
ac_add_options --enable-alsa
ac_add_options --enable-jack
ac_add_options --disable-crashreporter
ac_add_options --disable-updater
ac_add_options --disable-tests
ac_add_options --disable-eme
END


  # FIXME: FTBS with cbindgen > 0.23 (currently 0.24)
  # https://bugzilla.mozilla.org/show_bug.cgi?id=1773259
  sed -i '/const uint64_t ROOT_CLIP_CHAIN = ~0;/d' gfx/webrender_bindings/webrender_ffi.h


  ## [ARCH-SPECIFIC CONFIG] ##

  case ${CARCH} in
    armv7h)
      sed -i '
        /--enable-hardening/d
        /--enable-optimize/d
        /--enable-rust-simd/d
      ' ../mozconfig

      cat >>../mozconfig <<END
export CC=clang
export CXX=clang++
ac_add_options --disable-webrtc
ac_add_options --disable-elf-hack

# https://bugzilla.redhat.com/show_bug.cgi?id=1641623
ac_add_options --disable-av1
ac_add_options --enable-optimize="-g0 -O2"
mk_add_options MOZ_MAKE_FLAGS='-j2'
END

      # mozbuild.configure.options.InvalidOptionError: --disable-eme is not available in this configuration
      # EME is disabled anyway in the built package, but better check if it exists for ARM each new release.
      sed -i 's|ac_add_options --disable-eme||' ../mozconfig

      echo "applying arm.patch"
      patch -p1 -i ../arm.patch
      echo "applying build-arm-libopus.patch"
      patch -p1 -i ../build-arm-libopus.patch
    ;;
    i686)
      # disable LTO and use gcc toolchain (clang has issues on IA32)
      # disable SIMD (SSE2 for i686)
      export MOZ_SOURCE_CHANGESET="DEVEDITION_${pkgver//./_}_RELEASE"
      cat >>../mozconfig <<END
ac_add_options --disable-linker=lld
ac_add_options --enable-linker=bfd
ac_add_options --disable-lto
ac_add_options --disable-rust-simd
export CC=gcc-10
export CXX=g++-10
export AR=gcc-ar-10
export NM=gcc-nm-10
export RANLIB=gcc-ranlib-10
export STRIP=strip
END

      # readelf: Error: Unable to seek to 0x801db328 for section headers
      echo "applying avoid-libxul-OOM-python-check.patch"
      patch -p1 -i ../avoid-libxul-OOM-python-check.patch

      # test failure in rust code (complaining about network functions) when PGO is used,
      # see https://bugzilla.mozilla.org/show_bug.cgi?id=1565757
      echo "applying rust-static-disable-network-test-on-static-libraries.patch"
      patch -p1 -i ../rust-static-disable-network-test-on-static-libraries.patch
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC CONFIG] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac


  ## searchengines ##

  # let's use icecat's default search-engines


  ## libre patching ##

  # let's assume that icecat is already FSDG-fit upstream
}

build() {
  cd "$srcdir/$pkgname-${pkgver%_*}"

  ## build env ##

  export MOZ_NOSPAM=1
  export MOZBUILD_STATE_PATH="$srcdir/mozbuild"
  export MACH_USE_SYSTEM_PYTHON=1

  # LTO needs more open files
  ulimit -n 4096

  # clang-{9,10,11} -> error: unknown argument: '-fvar-tracking-assignments'
  CFLAGS="${CFLAGS/-fvar-tracking-assignments/}"
  CXXFLAGS="${CXXFLAGS/-fvar-tracking-assignments/}"


  ## [ARCH-SPECIFIC BUILD ENV] ##

  case ${CARCH} in
    armv7h)
      export MOZ_DEBUG_FLAGS=" "
      export CFLAGS+=" -g0"
      export CXXFLAGS+=" -g0"
      export LDFLAGS+=" -Wl,--no-keep-memory"
      export RUSTFLAGS="-Cdebuginfo=0"
    ;;
    i686)
      # -fno-plt with cross-LTO -> LLVM ERROR: Function Import: link error
      CFLAGS="${CFLAGS/-fno-plt/}"
      CXXFLAGS="${CXXFLAGS/-fno-plt/}"

      # disable LTO (clang has issues on IA32)
      export RUSTFLAGS+=" -Cdebuginfo=0 -Clto=off"
      export LDFLAGS+=" -Wl,--no-keep-memory -Wl,--reduce-memory-overheads"

      # libvpx has some hard-coded compiler flags for MMX, SSE, SSE2, use the correct one
      # per CARCH (75.0 uses an intrisic _mm_empty now, which required the corresponding
      # architecture flag to be preset - before it was merely embedding some assembly
      # code with EMMS
      export CFLAGS+=" -mmmx"
      export CXXFLAGS+=" -mmmx"
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC BUILD ENV] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac
  export CFLAGS
  export CXXFLAGS


  ## [ARCH-SPECIFIC BUILD CONFIG] ##

  case ${CARCH} in
    armv7h)
    ;;
    i686)
      # /usr/bin/ld.bfd: error: libxul.so(.debug_info) is too large (0x54c5369a bytes)
      options=( ${options[*]/\!strip/} )

      # avoid excessive debug symbols in rust leading to out-of-memory situations
      sed -i "s/debug_info = '\''2'\''/debug_info = '\''0'\''/" build/moz.configure/toolchain.configure
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC BUILD CONFIG] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac


  ## PGO build ##

  if (( $_should_skip_pgo ))
  then
    # skipping "3-tier PGO" "instrumented browser", to avoid OOM problems;
    # so we have the final .mozconfig now
    cp ../mozconfig .mozconfig
  else
    # Do 3-tier PGO
    echo "Building instrumented browser..."
    cat >.mozconfig ../mozconfig - <<END
ac_add_options --enable-profile-generate=cross
END
    _check_build_config
    ./mach build

    echo "Profiling instrumented browser..."
    ./mach package
    LLVM_PROFDATA=llvm-profdata \
      JARLOG_FILE="$PWD/jarlog" \
      xvfb-run -s "-screen 0 1920x1080x24 -nolisten local" \
      ./mach python build/pgo/profileserver.py

    if [[ ! -s merged.profdata ]]; then
      echo "No profile data produced."
      return 1
    fi

    if [[ ! -s jarlog ]]; then
      echo "No jar log produced."
      return 1
    fi

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

    cat >.mozconfig ../mozconfig - <<END
ac_add_options --enable-lto=cross
ac_add_options --enable-profile-use=cross
ac_add_options --with-pgo-profile-path=${PWD@Q}/merged.profdata
ac_add_options --with-pgo-jarlog=${PWD@Q}/jarlog
END
  fi # $_should_skip_pgo


  ## sanity checks ##

  # each of the [ARCH-SPECIFIC BUILD CONFIG] branches above should have created .mozconfig
  [[ -f .mozconfig ]] || ! echo "cannot continue without a .mozconfig file" || return 1
  _check_build_config


  ## main build ##

  echo "Building optimized browser..."
  ./mach build
}

package() {
  cd "$srcdir/$pkgname-${pkgver%_*}"
  DESTDIR="$pkgdir" ./mach install

  local vendorjs="$pkgdir/usr/lib/$pkgname/browser/defaults/preferences/vendor.js"
  install -Dvm644 /dev/stdin "$vendorjs" <<END
// Use LANG environment variable to choose locale
pref("intl.locale.requested", "");

// Use system-provided dictionaries
pref("spellchecker.dictionary_path", "/usr/share/hunspell");

// Disable default browser checking.
pref("browser.shell.checkDefaultBrowser", false);

// Don't disable extensions in the application directory
pref("extensions.autoDisableScopes", 11);
END

  local distini="$pkgdir/usr/lib/$pkgname/distribution/distribution.ini"
  install -Dvm644 /dev/stdin "$distini" <<END
[Global]
id=parabola
version=1.0
about=Icecat for Parabola GNU/Linux-libre
about.en-US=Icecat for Parabola GNU/Linux-libre
about.eo=Icecat por Parabola GNU/Linux-libre
about.es-ES=Icecat para Parabola GNU/Linux-libre
about.gl=Icecat para Parabola GNU/Linux-libre
about.pt-BR=Icecat para Parabola GNU/Linux-libre

[Preferences]
app.distributor=parabola
app.distributor.channel=$pkgname
app.partner.parabola=parabola
END

  local i theme=official
  for i in 16 22 24 32 48 64 128 256; do
    install -Dvm644 browser/branding/$theme/default$i.png \
      "$pkgdir/usr/share/icons/hicolor/${i}x${i}/apps/$pkgname.png"
  done
  install -Dvm644 browser/branding/$theme/content/about-logo.png \
    "$pkgdir/usr/share/icons/hicolor/192x192/apps/$pkgname.png"
  install -Dvm644 browser/branding/$theme/content/about-logo@2x.png \
    "$pkgdir/usr/share/icons/hicolor/384x384/apps/$pkgname.png"
  install -Dvm644 browser/branding/$theme/content/about-wordmark.svg \
    "$pkgdir/usr/share/icons/hicolor/scalable/apps/$pkgname.svg"
  install -Dvm644 browser/branding/$theme/content/identity-icons-brand.svg \
    "$pkgdir/usr/share/icons/hicolor/symbolic/apps/$pkgname-symbolic.svg"
  install -Dvm644 browser/branding/official/default48.png \
    "$pkgdir/usr/share/pixmaps/icecat.png"

  install -Dvm644 "${srcdir}"/icecat.desktop \
    "$pkgdir/usr/share/applications/icecat.desktop"
  install -Dvm644 "${srcdir}"/icecat-safe.desktop \
    "$pkgdir/usr/share/applications/icecat-safe.desktop"

  # Install a wrapper to avoid confusion about binary path
  install -Dvm755 /dev/stdin "$pkgdir/usr/bin/$pkgname" <<END
#!/bin/sh
exec /usr/lib/$pkgname/$pkgname "\$@"
END


  ## [ARCH-SPECIFIC INSTALL] ##

  case ${CARCH} in
    armv7h)
    ;;
    i686)
      # libxul.so cannot find it's libraries
      install -dm 755 "${pkgdir}"/etc/ld.so.conf.d
      echo "/usr/lib/${pkgname}" > "${pkgdir}"/etc/ld.so.conf.d/${pkgname}.conf

      # disable stripping in mozconfig.<arch> (insists to use llvm-strip which runs
      # out of memory on libxul.so). Now 2.5 GB can be stripped to 166 MB, so we do
      # that with the normal 'strip' from binutils after 'mach install'
      strip "$pkgdir/usr/lib/$pkgname/libxul.so"
    ;;
    x86_64)
    ;;
    *) echo "no [ARCH-SPECIFIC INSTALL] for arch: ${CARCH}" ; return 1 ;
    ;;
  esac

  # Replace duplicate binary with wrapper
  # https://bugzilla.mozilla.org/show_bug.cgi?id=658850
  ln -srfv "$pkgdir/usr/bin/$pkgname" "$pkgdir/usr/lib/$pkgname/$pkgname-bin"

  # Use system certificates
  local nssckbi="$pkgdir/usr/lib/$pkgname/libnssckbi.so"
  if [[ -e $nssckbi ]]; then
    ln -srfv "$pkgdir/usr/lib/libnssckbi.so" "$nssckbi"
  fi
}