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# Maintainer: Joan Figueras <ffigue at gmail>
# Maintainer: xiota / aur.chaotic.cx
# Contributor: (Parabola) fauno <fauno@kiwwwi.com.ar>
# Contributor: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
# Contributor: Ionut Biru <ibiru@archlinux.org>
# Contributor: Jakub Schmidtke <sjakub@gmail.com>

## useful links
# https://www.gnu.org/software/gnuzilla/
# https://git.savannah.gnu.org/cgit/gnuzilla.git

## options
: ${_build_save_source:=true}
: ${_build_repatch:=false}

: ${_build_pgo:=true}
: ${_build_pgo_reuse:=try}
: ${_build_pgo_xvfb:=true}

# set to download only one language; en-US does not work
: ${_lang:=}

## update
_icver="115.12.0"
_commit="f200ffe88821f66234591096bcbe87b0c11f8da0"
_icsum="42ac5b9349933b1e916594f80e4121274f53eaab0c8dbe9a18bdd7de58190f8b"
_ffsum="b59e1625a0bb2f0565a737394f2bf8a7ce3171314b0d871bde533a101847a8ef"

if [ -n "$_srcinfo" ]; then
  : ${_lang:=en-US}
fi

## basic info
_pkgname="icecat"
pkgname="$_pkgname"
pkgver="$_icver"
pkgrel=1
pkgdesc="GNU version of the Firefox ESR browser"
license=('MPL-2.0')
arch=('x86_64')

# main package
_main_package() {
  depends=(
    dbus-glib
    ffmpeg
    gtk3
    libevent
    libjpeg
    libpulse
    libvpx.so
    libwebp.so
    libxss
    libxt
    mime-types
    nspr
    nss
    pipewire
    ttf-font
    zlib
  )
  makedepends=(
    cbindgen
    clang
    diffutils
    dump_syms
    imake
    inetutils
    jack
    lld
    llvm
    mercurial
    mesa
    mold
    nasm
    nodejs
    python
    python-setuptools
    rustup
    unzip
    wasi-compiler-rt
    wasi-libc
    wasi-libc++
    wasi-libc++abi
    yasm
    zip

    ## _makeicecat
    git
    m4
    python-jsonschema
    python-psutil
    python-setuptools
    wget
  )
  optdepends=(
    'hunspell-dictionary: Spell checking'
    'libnotify: Notification integration'
    'networkmanager: Location detection via available WiFi networks'
    'speech-dispatcher: Text-to-Speech'
    'xdg-desktop-portal: Screensharing with Wayland'
  )

  if [[ "${_build_pgo::1}" == "t" ]]; then
    if [[ "${_build_pgo_xvfb::1}" == "t" ]]; then
      makedepends+=(
        xorg-server-xvfb
      )
    else
      makedepends+=(
        weston
        xorg-xwayland
        xwayland-run # AUR
      )
    fi
  fi

  options=(
    !debug
    !emptydirs
    !lto
    !makeflags
    !strip
  )

  url="https://git.savannah.gnu.org/cgit/gnuzilla.git"

  noextract=("firefox-${pkgver}esr.source.tar.xz")

  _patch_commit="24a6ea8"

  _pkgsrc="$_pkgname-$pkgver"
  _pkgsrc_gnuzilla="gnuzilla-$_commit"
  _pkgsrc_firefox="firefox-${pkgver}"
  _pkgext="tar.gz"
  source+=(
    "https://git.savannah.gnu.org/cgit/gnuzilla.git/snapshot/$_pkgsrc_gnuzilla.$_pkgext"
    "https://archive.mozilla.org/pub/firefox/releases/${pkgver}esr/source/firefox-${pkgver}esr.source.tar.xz"{,.asc}

    "18d19413472f-$_patch_commit.patch"::"https://aur.archlinux.org/cgit/aur.git/plain/18d19413472f.patch?h=firefox-esr&id=$_patch_commit"
    "6af7194e2778-$_patch_commit.patch"::"https://aur.archlinux.org/cgit/aur.git/plain/6af7194e2778.patch?h=firefox-esr&id=$_patch_commit"
    "b1cc62489fae-$_patch_commit.patch"::"https://aur.archlinux.org/cgit/aur.git/plain/b1cc62489fae.patch?h=firefox-esr&id=$_patch_commit"
  )
  sha256sums+=(
    "$_icsum"
    "$_ffsum"
    'SKIP'

    '3cc55401ed5e027f1b9e667b0b52296af11f3c5c62b4a80b7e55cda0e117ed18'
    '6952f93889acb514e3b06e251ea901df88c39b429da9677cd5547d90a8b6c73e'
    'f66a944fa8804c16b1f7bd9b42b18bfc2552a891adc148085f4b91685e8db117'
  )

  validpgpkeys=('14F26682D0916CDD81E37B6D61B7B526D98F0353') # Mozilla Software Releases <release@mozilla.com>

  _languages=(
    ach af an ar ast az be bg bn br bs ca ca-valencia cak cs cy da de dsb
    el en-CA en-GB eo es-AR es-CL es-ES es-MX et eu fa ff fi fr fur fy-NL
    ga-IE gd gl gn gu-IN he hi-IN hr hsb hu hy-AM ia id is it ja ja-JP-mac
    ka kab kk km kn ko lij lt lv mk mr ms my nb-NO ne-NP nl nn-NO oc
    pa-IN pl pt-BR pt-PT rm ro ru sc sco si sk sl son sq sr sv-SE szl
    ta te tg th tl tr trs uk ur uz vi xh zh-CN zh-TW
  )

  [ -n "$_lang" ] && _languages=("$_lang")

  for _locale in "${_languages[@]}"; do
    [ "$_locale" = "en-US" ] && continue
    source+=("l10n-central-$pkgver-$pkgrel-$_locale.zip"::"https://hg.mozilla.org/l10n-central/$_locale/archive/tip.zip")
    sha256sums+=('SKIP')
    noextract+=("l10n-central-$pkgver-$pkgrel-$_locale.zip")
  done
}

_make_icecat() {
  if [ "${_build_repatch::1}" != "t" ] && [ -e "$SRCDEST/$_pkgsrc.tar.zst" ]; then
    echo "Restoring previously patched sources..."
    rm -rf "$srcdir/$_pkgsrc"
    bsdtar -xf "$SRCDEST/$_pkgsrc.tar.zst"
    return
  fi

  pushd "$_pkgsrc_gnuzilla"

  # clean output in case there is already an old build
  mkdir output || rm -rf output/*
  mkdir output/l10n

  echo "Preparing Firefox ESR..."
  # cp --reflink=auto -f "$srcdir/firefox-${pkgver}esr.source.tar.xz"{,.asc} "$_pkgsrc_gnuzilla"/output/

  bsdtar xf "$srcdir/firefox-${pkgver}esr.source.tar.xz"
  mv "$_pkgsrc_firefox" "$srcdir/$_pkgsrc_gnuzilla/output/$_pkgsrc"

  echo "Preparing translations..."
  local L10N_PREFS_DIR="browser/chrome/browser/preferences"
  local L10N_DTD_FILE="advanced-scripts.dtd"

  for _locale in "${_languages[@]}"; do
    mkdir -p "output/l10n/$_locale"
    bsdtar -C "output/l10n/$_locale" --strip-components 1 -xf "$srcdir/l10n-central-$pkgver-$pkgrel-$_locale.zip"
    mkdir -p "output/l10n/$_locale/$L10N_PREFS_DIR"
    touch "output/l10n/$_locale/$L10N_PREFS_DIR/$L10N_DTD_FILE"
    rm -rf "output/l10n/$_locale"/.hg*
  done

  echo "Patching sources..."

  # don't make source tarball
  sed '/^finalize_sourceball$/d' -i makeicecat

  # don't redownload or reextract firefox
  sed \
    -e '/^fetch_source$/d' \
    -e '/^verify_sources$/d' \
    -e '/^extract_sources$/d' \
    -i makeicecat

  # don't redownload languages
  sed -E -e '/DEVEL/s&^(\s*)!.*continue$&\1continue&' -i makeicecat

  # remove unwanted language data
  for i in data/files-to-append/l10n/*; do
    for j in "${_languages[@]}"; do
      [ "$j" = "${i##*/}" ] && continue
    done
    rm -rf "$i"
  done

  # produce icecat sources
  cd output
  bash ../makeicecat
  popd

  if [[ "${_build_save_source::1}" == "t" ]]; then
    echo "Saving patched sources..."
    [ -e "$SRCDEST/$_pkgsrc.tar.zst" ] && rm -rf "$SRCDEST/$_pkgsrc.tar.zst"
    mv "$_pkgsrc_gnuzilla/output/$_pkgsrc" "$srcdir/"
    bsdtar -a -cf "$_pkgsrc.tar.zst" --options zstd:compression-level=9 "$_pkgsrc"
    cp --reflink=auto -rf "$_pkgsrc.tar.zst" "$SRCDEST/"
  fi
}

# common functions
prepare() {
  cat > icecat.desktop << END
[Desktop Entry]
Version=1.0
Name=IceCat
GenericName=Web Browser
Comment=Browse the World Wide Web
Keywords=Internet;WWW;Browser;Web;Explorer
Exec=icecat %u
Icon=icecat
Terminal=false
X-MultipleArgs=false
Type=Application
MimeType=text/html;text/xml;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;application/x-xpinstall;
StartupNotify=true
StartupWMClass=icecat
Categories=Network;WebBrowser;
Actions=new-window;new-private-window;safe-mode;

[Desktop Action new-window]
Name=New Window
Exec=icecat --new-window %u

[Desktop Action new-private-window]
Name=New Private Window
Exec=icecat --private-window %u

[Desktop Action safe-mode]
Name=Safe Mode
Exec=icecat -safe-mode %u
END

  _make_icecat

  mkdir -p mozbuild
  cd "$_pkgsrc"

  # clear forced startup pages
  sed -E 's&^\s*pref\("startup\.homepage.*$&&' -i "browser/branding/official/pref/icecat-branding.js"

  # disable extensions, otherwise profiling freezes
  cp "browser/app/Makefile.in" "$srcdir/Makefile.in"
  sed -E -e '/^\t.*\/extensions\/gnu\/\*.*$/d' -i "browser/app/Makefile.in"

  cp "browser/installer/package-manifest.in" "$srcdir/package-manifest.in"
  sed -E -e '/^.*\/browser\/extensions\/.*$/d' -i "browser/installer/package-manifest.in"

  cp "browser/installer/allowed-dupes.mn" "$srcdir/allowed-dupes.mn"
  sed -E -e '/^browser\/extensions\/.*$/d' -i "browser/installer/allowed-dupes.mn"

  # configure
  cat > ../mozconfig << END
ac_add_options --enable-application=browser
ac_add_options --disable-artifact-builds

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-rust-simd
ac_add_options --enable-wasm-simd
ac_add_options --enable-linker=mold
ac_add_options --disable-elf-hack
ac_add_options --disable-bootstrap
ac_add_options --with-wasi-sysroot=/usr/share/wasi-sysroot

# Branding
ac_add_options --with-app-basename=$_pkgname
ac_add_options --with-app-name=$_pkgname
ac_add_options --with-branding=browser/branding/official
ac_add_options --enable-update-channel=nightly
ac_add_options --with-distribution-id=org.gnu
ac_add_options --with-unsigned-addon-scopes=app,system
ac_add_options --allow-addon-sideload
export MOZILLA_OFFICIAL=1
export MOZ_APP_REMOTINGNAME=$_pkgname
MOZ_REQUIRE_SIGNING=

# System Libraries
ac_add_options --with-system-jpeg
ac_add_options --with-system-libevent
ac_add_options --with-system-libvpx
ac_add_options --with-system-nspr
ac_add_options --with-system-nss
ac_add_options --with-system-webp
ac_add_options --with-system-zlib

# Features
ac_add_options --enable-alsa
ac_add_options --enable-av1
#ac_add_options --enable-eme=widevine
ac_add_options --enable-jack
ac_add_options --enable-jxl
ac_add_options --enable-proxy-bypass-protection
ac_add_options --enable-pulseaudio
ac_add_options --enable-raw
ac_add_options --enable-sandbox
ac_add_options --enable-unverified-updates
ac_add_options --enable-webrtc
ac_add_options --disable-crashreporter
ac_add_options --disable-default-browser-agent
ac_add_options --disable-parental-controls
ac_add_options --disable-tests
ac_add_options --disable-updater

# Disables Telemetry by Default
mk_add_options MOZ_DATA_REPORTING=0
mk_add_options MOZ_SERVICES_HEALTHREPORT=0
mk_add_options MOZ_TELEMETRY_REPORTING=0

# Debugging
ac_add_options --disable-debug
ac_add_options --disable-debug-symbols
ac_add_options --disable-debug-js-modules
ac_add_options --enable-strip
ac_add_options --enable-install-strip
export STRIP_FLAGS="--strip-debug --strip-unneeded"

# Optimization
ac_add_options --enable-optimize=-O3
ac_add_options --enable-lto=cross,full
ac_add_options OPT_LEVEL="3"
ac_add_options RUSTC_OPT_LEVEL="3"

# Other
export AR=llvm-ar
export CC='clang'
export CXX='clang++'
export NM=llvm-nm
export RANLIB=llvm-ranlib
END

  patch -Np1 -F100 -i "$srcdir/18d19413472f-$_patch_commit.patch"
  patch -Np1 -F100 -i "$srcdir/6af7194e2778-$_patch_commit.patch"
  patch -Np1 -F100 -i "$srcdir/b1cc62489fae-$_patch_commit.patch"
}

build() {
  cd "$_pkgsrc"

  export RUSTUP_TOOLCHAIN=1.77

  export XDG_RUNTIME_DIR="${XDG_RUNTIME_DIR:-$srcdir/xdg-runtime}"
  [ ! -d "$XDG_RUNTIME_DIR" ] && install -dm700 "${XDG_RUNTIME_DIR:?}"

  export LIBGL_ALWAYS_SOFTWARE=true

  export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE=pip
  export MOZBUILD_STATE_PATH="$srcdir/mozbuild"
  export MOZ_BUILD_DATE="$(date -u${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH} +%Y%m%d%H%M%S)"
  export MOZ_NOSPAM=1

  # malloc_usable_size is used in various parts of the codebase
  CFLAGS="${CFLAGS/_FORTIFY_SOURCE=3/_FORTIFY_SOURCE=2}"
  CXXFLAGS="${CXXFLAGS/_FORTIFY_SOURCE=3/_FORTIFY_SOURCE=2}"

  # LTO/PGO needs more open files
  ulimit -n 4096

  # Do 3-tier PGO
  if [[ "${_build_pgo::1}" == "t" ]]; then
    # find previous profile file...
    local _old_profdata _old_jarlog _pkgver_old tmp_old tmp_new
    _pkgver_prof=$(
      cd "${SRCDEST:-$startdir}"
      for i in *.profdata; do [ -f "$i" ] && echo "$i"; done \
        | sort -rV | head -1 | sed -E 's&^[^0-9]+-([0-9\.]+)-merged.profdata&\1&'
    )

    # new profile for new major version
    if [ "${_pkgver_prof%%.*}" != "${pkgver%%.*}" ]; then
      _build_pgo_reuse=false
      _pkgver_prof="$pkgver"
    fi

    # new profile for new minor version
    _tmp_old=$(echo "${_pkgver_prof}" | cut -d'-' -f2 | cut -d'.' -f2)
    _tmp_new=$(echo "${pkgver}" | cut -d'-' -f2 | cut -d'.' -f2)

    if [ "${_tmp_new:-0}" -gt "${_tmp_old:-0}" ]; then
      _build_pgo_reuse=false
      _pkgver_prof="$pkgver"
    fi

    local _old_profdata="${SRCDEST:-$startdir}/$_pkgname-$_pkgver_prof-merged.profdata"
    local _old_jarlog="${SRCDEST:-$startdir}/$_pkgname-$_pkgver_prof-jarlog"

    # Restore old profile
    if [[ "${_build_pgo_reuse::1}" == "t" ]]; then
      if [[ -s "$_old_profdata" ]]; then
        echo "Restoring old profile data."
        cp --reflink=auto -f "$_old_profdata" merged.profdata
      fi

      if [[ -s "$_old_jarlog" ]]; then
        echo "Restoring old jar log."
        cp --reflink=auto -f "$_old_jarlog" jarlog
      fi
    fi

    # Make new profile
    if [[ "${_build_pgo_reuse::1}" != "t" ]] || [[ ! -s merged.profdata ]]; then
      echo "Building instrumented browser..."
      cat > .mozconfig ../mozconfig - << END
ac_add_options --enable-profile-generate=cross
export MOZ_ENABLE_FULL_SYMBOLS=1
END
      ./mach build

      echo "Profiling instrumented browser..."
      ./mach package

      if [[ "${_build_pgo_xvfb::1}" == "t" ]]; then
        local _headless_run=(
          xvfb-run
          -s "-screen 0 1920x1080x24 -nolisten local"
        )
      else
        local _headless_run=(
          wlheadless-run
          -c weston --width=1920 --height=1080
        )
      fi

      LLVM_PROFDATA=llvm-profdata JARLOG_FILE=${PWD@Q}/jarlog \
        "${_headless_run[@]}" -- ./mach python build/pgo/profileserver.py

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

    echo "Building optimized browser..."
    cat > .mozconfig ../mozconfig

    if [[ -s merged.profdata ]]; then
      stat -c "Profile data found (%s bytes)" merged.profdata
      cat >> .mozconfig - << END
ac_add_options --enable-profile-use=cross
ac_add_options --with-pgo-profile-path=${PWD@Q}/merged.profdata
END

      # save profdata for reuse
      cp --reflink=auto -f merged.profdata "$_old_profdata"
    else
      echo "Profile data not found."
    fi

    if [[ -s jarlog ]]; then
      stat -c "Jar log found (%s bytes)" jarlog
      cat >> .mozconfig - << END
ac_add_options --with-pgo-jarlog=${PWD@Q}/jarlog
END

      # save jarlog for reuse
      cp --reflink=auto -f jarlog "$_old_jarlog"
    else
      echo "Jar log not found."
    fi

    # reenable extensions
    cp "$srcdir/Makefile.in" "browser/app/Makefile.in"
    cp "$srcdir/package-manifest.in" "browser/installer/package-manifest.in"
    cp "$srcdir/allowed-dupes.mn" "browser/installer/allowed-dupes.mn"

    ./mach build
  else
    echo "Building browser..."
    cat > .mozconfig ../mozconfig

    ./mach build
  fi
}

package() {
  cd "$_pkgsrc"
  DESTDIR="$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);

// Enable GNOME Shell search provider
pref("browser.gnome-search-provider.enabled", true);

// Enable JPEG XL images
pref("image.jxl.enabled", true);

// Prevent about:config warning
pref("browser.aboutConfig.showWarning", false);

// Prevent telemetry notification
pref("services.settings.main.search-telemetry-v2.last_check", $(date +%s));
END

  local distini="$pkgdir/usr/lib/$_pkgname/distribution/distribution.ini"
  install -Dvm644 /dev/stdin "$distini" << END
[Global]
id=archlinux
version=${pkgver}
about=GNU IceCat for Arch Linux

[Preferences]
app.distributor=archlinux
app.distributor.channel=$_pkgname
app.partner.archlinux=archlinux
END

  # search provider
  local sprovider="$pkgdir/usr/share/gnome-shell/search-providers/$_pkgname.search-provider.ini"
  install -Dvm644 /dev/stdin "$sprovider" << END
[Shell Search Provider]
DesktopId=$_pkgname.desktop
BusName=org.mozilla.${_pkgname//-/}.SearchProvider
ObjectPath=/org/mozilla/${_pkgname//-/}/SearchProvider
Version=2
END

  # Replace duplicate binary
  ln -sf "/usr/bin/$_pkgname" "$pkgdir/usr/lib/$_pkgname/$_pkgname-bin"

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

  # desktop file
  install -Dvm644 ../$_pkgname.desktop \
    "$pkgdir/usr/share/applications/$_pkgname.desktop"

  # icons
  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
}

# execute
_main_package